CONCRETE FLOORING - Bison Manufacturing

Uniclass CI/SfB

(52.3)

L7315 X August 2007

LEADING THE PRECAST INDUSTRY SINCE 1919

PRECAST

CONCRETE FLOORING

This Bison precast concrete flooring document is a comprehensive product and technical guide designed for Structural Engineers, Civil Engineers, Specifiers and Contractors. It provides a range of products and solutions to choose from and is supported by technical details, specifications and design guidelines/considerations for Part A, Part E and Part L.

2 For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

CONTENTS

INTRODUCTION PAGES 0 - 7

COMMERCIAL/INDUSTRIAL PRODUCTS

01

HOUSING PRODUCTS SINGLE OCCUPANCY

02

HOUSING PRODUCTS MULTIPLE OCCUPANCY

03

COMPOSITE STEEL BEAM DESIGN

04

BUILDING REGULATIONS

05

SPECIFICATIONS & HEALTH AND SAFETY

06

RELATED PRODUCTS

07

BISON ONLINE

08

PAGES 08 - 23

PAGES 24 - 29

PAGES 30 - 39

PAGES 40 - 41

PAGES 42 - 57

PAGES 58 - 61

PAGES 62 - 63

PAGES 64

3 For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334

BISON

LEADING THE PRECAST INDUSTRY SINCE 1919

Excellent customer service, investment in research and development and an unrivalled understanding of market needs are just some of the reasons we have been ahead of the field for so long.

RESOURCE and Capacity

Innovation

The largest production capacity across four manufacturing

Over the last seven years, Bison has invested £50 million

plants throughout the UK, with Certificates of Assessed

to ensure that our customers continue to benefit from

Capability, awarded by the British Standards Institution.

innovative approaches to production, installation and service. We can boast a number of unique developments such as mechanically inserted Lifting Hooks and the Trailasafe® fall arrest system.


Sustainability

DESIGN SUPPORT

With Bison products, you can be certain that all materials

Bison’s in-house

have been produced in conditions designed to have as little

team represents

impact on the environment as possible. Swadlincote is the

the very best

most environmentally friendly factory of its kind in

in the industry

the world.

and is on hand to give design

Customer Driven

advice for any

Our investment is focused on meeting and exceeding

project, large

customer expectations. Bison customers in all the sectors

or small. They can help identify the optimal solution for

we serve know that they can rely on us for outstanding

your project, whether this means using one of our many

technical support, reliability and the highest quality product.

precision-made steel moulds, or taking the bespoke approach with a custom-made casting.

Customer SERVICE The Bison service team provide comprehensive support,

Designs are produced in our centralised production

from estimating to production and a contract team who

planning department and downloaded to the factory

install the products on site. Wherever you are in the UK,

machines by wireless link.

Bison’s nationwide coverage ensures that support is never far away.

The Bison Precast Floor Designer software can assist with the design of many Bison products including Hollow Core slab units, Composite Hollowcore slab units and Solid Composite slab units.


BISON CONCRETE FLOOR TYPES

Bison Concrete Floors are prestressed precast concrete slabs used in all building types Bison Concrete Floors are manufactured using a long line casting technique with automatic casting equipment which places high strength, low water/ cement ratio concrete under a high degree of vibration and compaction.

BISON HOLLOW CORE & SOLID FLOORS

BISON HOLLOW COMPOSITE FLOORS

Widely used in masonry, steel and concrete structures for

A combination of the Bison Hollow Core Slab with a structural

domestic, commercial and industrial buildings. The most

concrete topping. This type of floor gives the benefit of an

economic flooring solution for the widest variety of situations,

increased structural performance with an enhanced lateral

providing the maximum benefits of speed of construction.

load distribution where necessary for heavy point loads. The floor may be designed in the unpropped or partially propped condition to suit particular requirements.


BISON CONCRETE FLOOR TYPES

BISON SOLID COMPOSITE FLOORS

THE BISON SOUND SLAB

Combines the advantages of a precast, prestressed

The Bison Sound Slab has been specially developed to

element acting compositely with an in-situ concrete

provide an economic and structurally efficient means of

structural topping to form a solid slab. The prestressed

satisfying the requirements of Part E Sound Regulations.

element, whilst eliminating the need for conventional shuttering, provides a structural performance far superior to normally reinforced concrete.

Floor Heating and Cooling Systems As the conservation of energy continues to be a major

LIFTING HOOKS

issue surrounding the environment, Bison has entered into

All Bison Precast Concrete Floors are available with

a strategic partnership with velta UK. With over 35 years’

inserted lifting hooks. For more information see section

experience, velta have been responsible for some of the

‘Related Products’, pages 62 & 63.

industry’s most important innovations in floor heating and cooling systems and now offers the widest range of

INSULATED HOLLOW CORE GROUND FLOORS

solutions specifically designed to meet the requirements of

The system consists of expanded polystyrene (EPS) bonded

to provide an innovative, sustainable and cost effective floor

to the soffit of Hollow Core units and formed to provide

heating and cooling system which is precast in to Bison

special end and side bearing support where required.

flooring products providing off site manufacturing benefits.

each individual project. Bison and velta have joined forces

7


MARKET APPLICATIONS

COMMERCIAL/ INDUSTRIAL

Bison has a prolonged proven track record within commercial / industrial markets and produces a range of products and solutions for many different floor applications. This encompasses shops, shopping precincts, multi-storey car parks, office developments, factories and warehouses. However, the types of constructional components used in these buildings are also often specified for large public developments such as schools and hospitals.


MARKET APPLICATIONS

HOUSING

HOUSING SINGLE OCCUPANCY

HOUSING MULTIPLE OCCUPANCY

In traditional single-occupancy housing, individual Bison

Similarly for multiple-occupancy housing, individual

products can solve particular problems for the designer, arising

Bison products can solve particular problems.

from site conditions, constructional constraints or the Building Regulations, including Part E, Part A and Part L.

Bison has a sustained track record and reputation within the multiple occupancy market. A range of floor solutions and products provide the architect and the structural engineer with flexibility in design as well as satisfying the Building Regulations, particularly with reference to sound attenuations (Part E), Thermal Performance (Part L) and Structural Robustness (Part A).


COMMERCIAL / INDUSTRIAL PRODUCTS

HOLLOW CORE FLOORS THE BENEFITS DESIGN Structural Efficiency

Extra Long Spans

A Hollow Core slab offers the ideal structural section by

Factory made prestressed units offer the design benefit of

reducing deadweight while providing the maximum structural

long span units for given depths. This avoids the need for

efficiency within the slab depth.

intermediate supports and provides an economically light solution throughout the entire structure. The Bison long span

Flexibility of Design Approach

450mm-deep unit can span in excess of 16 metres.

Precast floors are available with a variety of factory-formed notches, slots and reinforcement arrangements which offer various design approaches.

MANUFACTURING Factory produced to Rigorous Quality Standards

Shelf Angle Bearing

Because precast floors are factory produced, they are

Slab ends can be notched during manufacture to facilitate a

manufactured in an environment which is more readily

bearing within the depth of a main steel support.

controlled than a building site. Quality control systems are

This minimises storey height, causing substantial cost

properly implemented and are independently examined on a

benefits from reduced cladding, lower internal fittings and

regular basis under the British Standards Institution Quality

other related peripherals.

Assurance Scheme, BS EN ISO 9001 approved. Diaphragm Action Fire Resistance

Precast floor slabs are structurally grouted to provide a

Standard precast floors can be supplied with a fire resistance

floor with full diaphragm action, as required in most

of up to two hours. Periods in excess of this can be provided

multi–storey frameworks.

with modified sections if required. Preformed Site Services Finished Soffits

Precast floors can be provided with factory formed service

Precast floors are manufactured on high quality steel beds

holes, thus avoiding laborious setting out and shuttering

and, in appropriate cases, are suitable for direct decoration.

on site.

Exposed soffits can easily be accommodated.

CONSTRUCTION Minimum In-situ Concrete

Immediate Unpropped Working Platform

With a precast floor, a lot of the work is done off site. This

Once a precast floor is erected, it is immediately available

eliminates what can be complex, time-consuming and

as a working platform. In comparison, steel deck systems

weather-affected site work.

can present problems in achieving level surfaces while concrete is being poured, and in enabling access while in

Speed of Erection

the propped condition.

Time-consuming activities such as propping, shuttering and concrete-pouring are virtually eliminated.


SECTION

01

HOLLOW CORE FLOORS CASE STUDIES COMMERCIAL BUILDINGS AND CAR PARKS The office block shown is the British Gas offices in Solihull, West Midlands. This is a typical commercial application where the structural form consists of a steel frame with 7.5 x 8.7m bays and 200mm precast Hollow Core units spanning 7.5m. A total of 9100m2 of precast units were used and 40m3 of precast stair. Multi storey car park in Nuneaton where 10,000m2 of 150mm deep Hollow Core floor units and 67m3 of precast stair units was used to provide excellent durability and performance in a busy, robust car park environment.

RETAIL DEVELOPMENTS The IKEA outlet in Manchester is constructed using a steel frame with precast unit floors. Over 40,000m2 of 200mm deep Hollow Core precast floor units were used in the construction. The grid reflected the use of car park, retail and offices on different floors. Drake Circus Shopping Centre located in Plymouth used 19,000m 2 across a combination of Hollow Core floor profiles from 200mm up to 450mm deep.

HOSPITAL & STADIA DEVELOPMENTS Pictured is a hospital in Exeter constructed using a steel frame structure with 200mm and 300mm deep Hollow Core units used to span up to 9m. This provided flexibility in span lengths and optimised design for the applied loads over 4,250m 2 floor area throughout. Millennium Stadium in Cardiff used over 48,000m2 of precast Hollow Core floor units and over 380 precast stair units.



HOLLOW CORE FLOORS UNIT PROFILES 150mm Sound Slab unit profile

75mm unit profile 100mm unit profile 150mm unit profile

200mm unit profile

250mm unit profile

260mm unit profile

300mm unit profile

350mm unit profile

400mm unit profile

450mm unit profile

12

1200mm Nominal Width

For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION

01

HOLLOW CORE FLOORS LOAD/SPAN TABLE Largely because of fast on-site construction, Bison Hollow Core Floors are one of the most economic flooring solutions for the widest variety of situations including masonry, steel and concrete structures for retail, commercial and industrial buildings.

Spans indicated below allow for characteristic service load (live load) plus self weight plus 1.5 kN/m2 for finishes Overall structural depth mm

Characteristic service loads kN/m2 0.75

1.5

2.0

2.5

3.0

4.0

5.0

7.5

10..0

15.0

Effective span in metres 100*

5

5

5

5

4.8

4.5

4.2

3.7

3.3

2.8

150*

7.5

7.5

7.5

7.5

7.3

6.8

6.4

5.6

5

3.2

200

10

10

9.7

9.4

9.1

8.5

8

7.1

6.4

5.5

250

12.3

11.5

11.1

10.7

10.4

9.7

9.2

8.1

7.4

6.3

300

15

14.9

14.4

13.9

13.5

12.8

12.1

10.9

10

8.7

350

17.4

16.5

15.9

15.5

15

14.2

13.6

12.5

11.2

9.8

400

18.5

17.6

17

16.6

16.1

15.3

14.6

13.2

12.1

10.6

450

19.9

19

18.5

18

17.5

16.7

15.9

14.5

13.4

11.7

The table is given as a guide only. When using maximum spans, consideration must be given to the effect of camber and deflection on partitions or finishes. Further advice is available on request. * 35mm screed required for 2 hour fire resistance.



HOLLOW CORE FLOORS BEARING DETAILS BEARING ON SHELF ANGLES

Finishes

Structural concrete infill

Nominal bearing 75

Projection of angle

Minimum bearing 50

beyond extremity of flange 50 mm. Greater where U.C. sections are used. Refer to Bison for assistance.

25 mm clearance

25 mm clearance is required to allow unit to be dropped into position past the flange of the supporting U.B.


SECTION

01

HOLLOW CORE FLOORS BEARING DETAILS BEARING ON MASONRY

Finishes

Nominal bearing t / 2 - 10 mm

Wall thickness t

190

t

SIDE BEARING

Where required by Building Regulations for sound insulation. Finishes

Continuous wet mortar by builder to take up camber



HOLLOW CORE FLOORS BEARING DETAILS NARROW WALL BEARING


Finishes Structural concrete infill

Tie reinforcement at

Nominal bearing t / 2 - 10 mm (Min. 65 mm) Wall thickness t < 190 (Min. 140 mm)

400 c/c in joints and troughs provided in 1200 wide units t

(NB. In order to satisfy the tolerances in this situation, this detail is only recommended where a full bearing is available at the other end of the slab)

NARROW BEARING ON STEELWORK

Structural concrete infill Structural concrete infill

Finishes

Nominal bearing


t / 2 - 10 mm

400 c/c in joints and troughs provided in 1200 wide units

Wall thickness t

150

(Min. 140 mm)


t

SECTION

01

HOLLOW CORE FLOORS BEARING DETAILS END SLOTS IN UNITS Slots may be provided in slab ends for the purpose of tying into the structure for nominal continuity. Finishes


TRIMMING OPENINGS M.S.Trimmer. Fire protection, where necessary by General Contractor.

Finishes

The recommendations for bearings of precast units are set out in Clause 5.2.3 of B.S. 8110:1997. These vary according to the type of floor construction and the type of support material and building tolerances. In general nominal bearings of 100 mm on masonry or 75 mm on steelwork are recommended but may be reduced dependent upon circumstances and subject to the above clause.



HOLLOW COMPOSITE FLOORS UNIT PROFILES 200 to 225mm overall composite depth comprising 150mm unit with 50 or 75mm structural topping

250 to 275mm overall composite depth comprising 200mm unit with 50 or 75mm structural topping


335mm overall composite depth comprising 260mm unit with 75mm structural topping




525mm overall composite depth comprising 450mm unit with 75mm composite material

18

1200mm Nominal Width For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk

SECTION

01

HOLLOW COMPOSITE FLOORS LOAD/SPAN TABLE A Bison Hollow Composite Floor is a Bison Hollow Core Slab with a structural concrete topping. This combination delivers increased structural performance overall, with an improved lateral load distribution where necessary for heavy point loads. The floor may be designed in the unpropped or partially propped condition to suit particular requirements. It is particularly suitable for industrial buildings, high buildings, car parks or other structures where additional longitudinal and transverse tying is required. Spans indicated below allow for characteristic service load (live load) plus self weight plus 1.5 kN/m2 for finishes Overall structural depth mm

Characteristic service loads kN/m2 0.75

1.5

2.0

2.5

3.0

4.0

5.0

10..0

15.0

Effective span in metres 200

8.25

8.25

8.1

7.9

7.7

7.4

7.1

5.8

4.9

250

10.4

9.9

9.7

9.4

9.2

8.8

8.4

7

6

300

11.7

11.2

10.9

10.6

10.4

9.9

9.5

7.8

6.8

375

14.5

14

13.7

13.5

13.2

12.7

12.3

10.7

8.8

425

16

15.5

15.2

14.9

14.6

14.1

13.7

11.9

10

475

17.1

16.5

16.2

15.9

15.6

15.1

14.6

12.7

10.7

525

18.5

17.9

17.6

17.3

17

16.4

15.9

13.9

11.7

The above data is based upon 50 or 75mm structural topping of C30 concrete which should be regarded as a minimum. Other topping depths may be recommended in some circumstances. Design data for alternative combinations are available from Bison design offices. In relation to the overall structural concept of the building it is also important also to consider topping reinforcement, daywork and movement joints.



SOLID COMPOSITE FLOORS UNIT PROFILES Bison Solid Composite Floors consist of a precast, prestressed element acting compositely with an in-situ concrete structural topping to form a solid slab. This combination of elements delivers the benefits of both, such as a structural performance far superior to normally-reinforced concrete, reduced construction depths, no shuttering, minimal propping, built-in fire resistance, fast erection, and increased flexibility of architectural and engineering design, such as the scope to incorporate all the details normally associated with in-situ design, such as the tying in of balconies, trimming of openings, maximum load distribution and minimum structural depth.

75mm unit with 50mm structural topping










SECTION

01

SOLID COMPOSITE FLOORS LOAD/SPAN TABLE A Bison Hollow Composite Floor is a Bison Hollow Core Slab with a structural concrete topping. This combination delivers increased structural performance overall, with an improved lateral load distribution where necessary for heavy point loads. The floor may be designed in the unpropped or partially propped condition to suit particular requirements. It is particularly suitable for industrial buildings, high buildings, car parks or other structures where additional longitudinal and transverse tying is required.

Fire Resistance*

Spans indicated below allow for characteristic service load (live load) plus self weight plus 1.5 kN / m2 for finishes Unit depth

Overall structural depth mm

Self Wt kN / m2

Propped or Unpropped

Characteristic service loads kN / m2 0.75

1.5

2.0

2.5

3.0

4.0

5.0

10.0

15.0

Effective span in metres

1 hour

75

1 hour

75

1 hour

100

1 hour

100

2 hour

100

2 hour

100

125

2.95

150

3.54

175

4.12

200

6.70

6.25

6.00

5.70

5.50

5.15

4.87

3.90

3.80

7.50

7.00

6.80

6.50

6.35

5.95

5.60

4.56

3.92

8.32

7.78

7.52

7.25

7.02

6.62

6.29

5.12

4.05

4.71

8.90

8.40

8.12

7.85

7.62

7.20

6.85

4.98

3.96

125

2.95

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.60

3.10

150

3.54

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.50

175

4.12

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.65

200

4.71

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.75

3.68

150

3.54

7.80

7.27

7.00

6.75

6.50

6.10

6.77

4.55

3.85

200

4.71

9.10

8.64

8.22

8.08

7.82

7.33

7.05

5.80

4.50

250

5.89

10.18

9.85

9.15

9.00

8.90

8.45

8.08

6.12

4.50

300

7.07

10.66

9.58

9.45

9.15

8.80

8.15

7.60

5.80

4.40

150

3.54

5.00

5.00

5.00

5.00

5.00

5.00

5.00

4.50

3.88

200

4.71

5.00

5.00

5.00

5.00

5.00

5.00

5.00

4.96

4.50

250

5.89

5.00

5.00

5.00

5.00

5.00

5.00

5.00

4.80

4.50

300

7.07

4.95

4.92

4.90

4.88

4.85

4.80

4.71

4.60

4.40

150

3.54

7.26

6.80

6.66

6.46

6.23

5.85

5.50

4.30

3.60

200

4.71

8.57

8.25

8.05

7.83

7.10

6.85

6.60

5.62

4.25

P

U/P

P

U/P

P

250

5.89

9.00

8.80

8.65

8.50

8.35

8.10

7.80

5.75

4.35

300

7.07

10.20

9.00

8.90

8.70

8.30

7.30

7.20

5.50

4.20

150

3.54

5.00

5.00

5.00

5.00

5.00

5.00

5.00

4.30

3.62

200

4.71

5.00

5.00

5.00

5.00

5.00

5.00

5.00

4.60

4.20

250

5.89

5.00

5.00

5.00

4.95

4.90

4.85

4.80

4.55

4.35

300

7.07

4.65

4.65

4.65

4.65

4.60

4.55

4.55

4.40

4.02

U/P

*Enhancement of the stated fire period may be achieved by applied soffit finishes.



SOLID COMPOSITE FLOORS BEARING DETAILS SIMPLE BEARINGS ON TOP FLANGE OF STEELWORK Nominal support reinforcement and/or daywork joints determined by general layout and site operation.

40 mm 40 mm

Min. bearing

Min. bearing

SLAB COMPOSITE WITH SUPPORTING BEAM

Flange reinforcement and shear studs as required by steelwork design

40 mm Min. bearing

BEARINGS ON SHELF ANGLES

Minimum 25 mm cover to top of steel beam flange

Minimum 50 mm clearance


Nominal 50 mm bearing

SECTION

01

SOLID COMPOSITE FLOORS BEARING DETAILS CANTILEVER CONSTRUCTION

In-situ structural topping on precast element

Precast balcony element For IsoPro balcony requirements refer to Bison for assistance.

IN-SITU CONSTRUCTION CENTRED Solid composite floors may be placed on in-situ beam downstands or supported on shutters before pouring site concrete

Nominal 50 mm bearing for precast elements

IN-SITU CONSTRUCTION SIDE

Beam depths and widths to suit specific requirements

Nominal 50 mm bearing for precast elements



HOLLOW CORE FLOORS THE BENEFITS USER BENEFITS Sound Resistance

Fire

The single most common complaint in relation to housing

Adequate fire resistance is an important design feature of any

is noise nuisance. Timber floors have little sound resistance

modern building. It has long been recognised that floors between

and most people will be familiar with the problems and the

flats in multi-occupancy housing should have a high level of fire

inconvenience of sound transmission, particularly from upstairs

resistance. Consequently, these are almost always constructed

to downstairs. Precast concrete floors provide an extremely

in concrete in order to satisfy the Building Regulations. It seems

efficient sound barrier between separate living areas.

reasonable that a similar level of protection should be afforded to those living in houses. Concrete is, of course, a non-combustible

Maintenance

material and it also acts as a solid barrier which will contain not

Precast concrete is an inert material. It does not shrink

only the fire but the smoke, which is the primary cause of most

and warp like timber and does not produce the cracking of

fatalities in fire accidents.

plasterwork and other finishes which result in an ongoing and costly maintenance problem. Concrete is not subject to

Factory Produced to Rigorous Quality Standards

damage from rot or insect attack.

Because precast floors are factory produced, they are manufactured in an environment which is more readily

Squeaky Floors

controlled than a building site. Quality control systems in

Another problem associated with the shrinkage of timber

Bison factories are properly implemented and are independently

materials is the squeaking between boards and joists when

examined on a regular basis under The British Standards

walked upon. This is extremely irritating and very expensive to

Institution Quality Management System defined in BS EN ISO 9001.

rectify. This problem does not exist with a concrete floor.

CONSTRUCTION BENEFITS Design flexibility

Structural Efficiency

Unlike timber, a precast concrete floor provides a structural


platform which gives the house designer greater freedom in

reducing the deadweight whilst providing the maximum

supporting upper floor wall partitions to virtually any layout.

structural efficiency with the minimum slab depth. This offers

Furthermore with a concrete upper floor the partitions can be

the design benefit of longer spans, thus reducing the lengths

built in blockwork with its greater sound resistance, instead of

of internal loadbearing walls and foundations.

timber stud. Site Safety Speed of Erection

Once a precast concrete floor is erected it is immediately

Typically a single precast floor slab is up to 10 square metres

available as a working platform. Combined with Trailasafe®

in area and can be laid in minutes. Dependent upon site

synthetic mesh for trailer deck fall arrest, and the Bison Air

conditions and house sizes, the floors to several houses can

Mat for roll-off fall protection, this creates the safest possible

normally be completed in one day.

environment for site workers.

Preformed Service Provision Precast concrete floors can be provided with factory-formed service holes to accommodate all the necessary service routes with ease.



SECTION

02

HOLLOW CORE FLOORS CASE STUDIES TERRACED SINGLE OCCUPANCY HOUSING DEVELOPMENTS Pictured is part of a large housing development based in London. Over 578m2 of 150mm Hollow Core floor units were used throughout for 1st and 2nd floor applications across varying design type houses, typically from town type, 2 floor houses, to traditional 1st floor houses. Hollow Core floors have been installed by many housebuilders, both large and small, for terraced developments.

DETACHED HOUSING DEVELOPMENTS Pictured is a detached housing development based in Warwick. The development was a mix of three, four and five bedroom detached houses, where 250m 2 of 150mm Hollow Core units were used throughout the plot for all first floor applications. Further detached developments using Hollow Core floors have been constructed across the country, from Sterling in Scotland to Portsmouth in England.

LARGE ESTATE HOUSING DEVELOPMENTS Pictured is an estate type housing, consisting of 8 bedrooms, 24 rooms and 3 outbuildings based in Oxshott. 496m2 of Hollow Core floor units were used throughout the house.



HOLLOW CORE FLOORS GROUND/UPPER FLOOR SLAB PROFILES The most suitable and widely used precast unit for single occupancy housing is a 1200mm wide Hollow Core slab with a depth of either 150 or 200mm.

150mm unit profile

200mm unit profile


CONSTRUCTION DETAILS TYPICAL HOUSE LAYOUTS

1200 mm Wide Units

Structural steel supports

Slab span direction

Load bearing walls

Non-Load bearing walls

by others


SECTION

02

HOLLOW CORE FLOORS alternative batten arrangements to soffits

Battens

Plasterboard

Short firing is not recommended. Various site-drilled anchors are available and, used in accordance with the manufacturers instructions, are a simple and economic fixing method.

Service routes in ceiling void

Battens and counterbattens

Plasterboard

To view load span tables please go to page 13

A SUSTAINABLE CHOICE... The use of Bison Hollow Core flooring can significantly cut the carbon dioxide emissions of a project by up to one fifth; a CO2 reduction and material saving of 23% can be achieved in the construction of an office block.* *based on a 2600m2 office block development



HOLLOW CORE FLOORS BEARING DETAILS TYPICAL DUAL BEARING

Alternative

Alternative

services route

services route

190 mm Block Wall

SIDE BEARING Where required by Building Regulations for sound insulation. Finishes


TYPICAL SINGLE BEARING


100 mm Block Wall


190 mm Block Wall

SECTION

02

INSULATED HOLLOW CORE FLOORS GROUND FLOOR 150 mm unit profile

200 mm unit profile

1200 mm Nominal Width

INSULATED HOLLOW CORE UNIT DETAILS Finishes 150 mm or 200 mm

Hollow Core Unit

Support Castellations

Expanded Polystyrene (EPS) bonded to soffit

INSULATED HOLLOW CORE FLOORS BEARING DETAILS DUAL BEARING Finishes

EXTERNAL WALL BEARING

Support Castellations Finishes

190 mm 262 mm

Sleeper Wall

or 312 mm

Expanded Polystyrene Foundation

(EPS) bonded to soffit

The Building Regulations Part L1A, L2A 2006 ‘Conservation of fuel and power’ require that a building is airtight and pressure testing for this is covered by regulation 54. The regulations no longer allow the elemental method and a building needs to be considered as a whole to satisfy the requirements of the regulations. Bison can provide an insulated slab to give a thermal ‘U’ value of 0.22W/m2 for the floor and greater if required. For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334

29


HOLLOW CORE FLOORS THE BENEFITS Speed of Erection

Composite Steel Beam Design

Time consuming activities such as propping, shuttering and

Composite Steel Beam Design incorporating either Hollow

concrete pouring are virtually eliminated.

Core or solid slabs provides a structural and cost efficient solution for steel frames. It reduces total tonnage of steel

Lifting Hooks

beams by up to 40% and also reduces the number of

Bison can supply Hollow Core units with cast-in lifting hooks

components to be erected.

that speed up the installation and bring associated Health & Safety benefits.

Sound Requirements Building Regulations Part E

Immediate Unpropped Working Platform

In new-build attached dwellings a developer may choose

Propping is generally not required with Hollow Core floors.

between Pre-Completion Testing (PCT.) or, if available, a

Once a precast floor is erected it is immediately available

Robust Detail (RD). Bison Concrete Products have developed

as a working platform. In comparison, steel deck systems

a series of solutions to cover the use of precast concrete

can present problems in achieving level surfaces while

units in association with masonry buildings and steel and

concrete is poured, and in enabling access while in the

concrete frames. Solutions have been developed and testing

propped condition.

is in the process of being completed prior to an application for Robust Detail status.

Minimum In-situ Concrete With a precast floor a lot of the work is done off-site. This

Preformed Site Services

eliminates on-site work that can be complex, time-consuming

Precast floors can be provided with factory formed service

and weather affected.

holes, thus avoiding laborious setting out and shuttering on-site.

Extra Long Spans Factory-made prestressed units offer the design advantage

Structural Efficiency

of long span units for given depths. This can avoid the need


for intermediate supports.

reducing the deadweight whilst providing the maximum structural efficiency within the slab depth.

Diaphragm Action Precast floor slabs, when structurally grouted, provide a

Factory-Produced to Rigorous

floor with full diaphragm action to the building. A structural

Quality Standards

concrete topping is not required.

Because precast floors are factory-produced, they are manufactured in an environment which is more controlled

Flexibility of Design Approach

than a building site. Quality control systems are properly

Precast floors can provide the technical solution for the

implemented and are independently examined on a regular

requirements of Part A of the Building Regulations 2004 for

basis, under the British Standards Institution Quality

Disproportionate Collapse.

Management Scheme defined in BS EN ISO 9001:2000.


SECTION

03

HOLLOW CORE FLOORS TRACK RECORD MULTI-STOREY HOUSING The three block housing development in Windsor consisted of 1st, 2nd, 3rd and roof with the other two blocks being 1st, 2nd and roof. All three blocks used 200mm deep Hollow Core sound slab flooring with 3897m2 used throughout the scheme and 30m3 of concrete precast stairs.

MULTI-STOREY HOUSING The housing development in Worcester, which used 1,700m 2 of 200mm deep Hollow Core sound slab flooring and 10m3 of precast concrete stairs. This included one three storey block and one 4 storey block.

MULTI-STOREY RESIDENTIAL DEVELOPMENTS This multi-storey residential development used precast Hollow Core floors within a steel frame structure. The development is in Walsall, Birmingham, and used 1500m 2 of 200mm deep Hollow Core sound slab flooring, plus 29m3 of precast stair units. A flat, uninterrupted soffit was achieved with the Hollow Core units, spanning 6.1m between downstand beams, which were at separating wall positions.



HOLLOW CORE FLOORS UNIT PROFILES 150mm Sound Slab unit profile

150mm unit profile

200mm unit profile

250mm unit profile

260mm unit profile

300mm unit profile




SECTION

03

HOLLOW CORE COMPOSITE FLOORS UNIT PROFILES 250 to 225mm overall composite depth comprising 150mm unit with 50 or 75mm structural topping






A SUSTAINABLE PROCESS... Bison precast floors are produced under sustainable conditions at our flagship production plant at Swadlincote, Derbyshire. The state of the art Hollow Core plant is the most technically advanced and sustainable of its kind in the world: all waste water from the factory is recycled; the fully automated process is energy efficient, taking only 12 hours; and the manufacturing process maximizes efficiency, which


prevents material wastage.



HOLLOW CORE FLOORS BEARING DETAILS The recommendations for bearings of precast units are set out in Clause 5.2.3 of B.S. 8110:1997. These vary according to the type of floor construction and the type of support material and building tolerances. In general, nominal bearings of 100mm on masonry or 75mm on steelwork are recommended but may be reduced dependent upon circumstances and subject to the above clause.

BEARINGS ON SHELF ANGLES

Finishes


Nominal bearing 75

Projection of angle

Minimum bearing 50

beyond extremity of flange 50 mm. Greater where U.C. sections are used

25 mm clearance

25 mm clearance is required to allow unit to be dropped into position past the flange of the supporting U.B.


SECTION

03

HOLLOW CORE FLOORS BEARING DETAILS BEARINGS ON MASONRY

Finishes

Nominal bearing t / 2 - 10 mm

Wall thickness t

t

190

SIDE BEARING

Where required by Building Regulations for sound insulation. Finishes




HOLLOW CORE FLOORS BEARING DETAILS NARROW WALL BEARING


Finishes


Nominal bearing t / 2 - 10 mm (Min. 65 mm)


Wall thickness t < 190 (Min. 140 mm)

t

N.B. In order to satisfy the tolerances in this situation, this detail is only recommended where a full bearing is available at the other end of the slab.

NARROW BEARING ON STEELWORK


Finishes

Nominal bearing


t / 2 - 10 mm


Wall thickness t

150

(Min. 140 mm)

t


SECTION

03

HOLLOW CORE FLOORS BEARING DETAILS END SLOTS IN UNITS Slots may be provided in slab ends for the purpose of tying into the structure for nominal continuity or disproportionate collapse Finishes



Finishes



SOLID COMPOSITE FLOORS UNIT PROFILES Solid composite construction utilises the advantages of a prestressed precast element acting compositely with an in-situ structural topping, combining the benefits of precast and in-situ construction.

These benefits are: • Reduced Construction Depths • Speed of Erection • Elimination of Shuttering • Minimal Propping • Fire Resistance • Flexibility of Architectural and Engineering design

75mm unit with 50, 75, 100 or 125mm composite material

100mm unit with 50, 100, 150 or 200mm composite material 1200mm Nominal Width


A SUSTAINABLE FUTURE... The inherent thermal mass properties of concrete can help to regulate temperature fluctuations, ensuring that indoor environments are comfortable without the use of air conditioning, providing the user with a significant cost and energy saving. Compared to air conditioning, the active Fabric Energy Storage (FES) of concrete reduces carbon dioxide emissions by up to 50%.


SECTION

03

SOLID COMPOSITE FLOORS BEARING DETAILS SIMPLE BEARING ON TOP FLANGE OF STEELWORK

Nominal support reinforcement and/or daywork joints determined by general layout and site operation. 40 mm Min. bearing 40 mm Min. bearing

SLAB COMPOSITE WITH SUPPORTING BEAM

Flange reinforcement and shear studs as required by steelwork design

40 mm Min. bearing



Composite steel beam design incorporating Hollow Core or solid slabs provides a structural and cost efficient solution for steel frames. It reduces total tonnage of steel beams by up to 40% and also reduces the number of components to be erected.

Definition Composite steel beam design is the use of Hollow Core or solid slabs together with in-situ infill in conjunction with welded studs onto steel beams. This enables the slabs and beams to act compositely together, enhancing the load capacity of the steel beams.

DESIGN CONSIDERATIONS 1. SHEAR STUD CAPACITY PRD = 0.8 f u (d2/4) / gv or PRD = 0.29 aßd2

fcpEcp / gv

Whichever is the lesser. -0.33

ø fy 300 40 *1000+2.5g 16 460 s fcu a = 0.2 ( h/d+1) h = height of the stud. d = is the diameter of the shank of the stud. fu = is the specified ultimate tensile strength of the material of the stud but not greater than 500 N/mm2. ß = a factor which takes into account the gap width g (mm) and is given as 0.5 (g/70+1) ² 1.0 and g ³ 30mm.  = a factor which takes into account the diameter ø of transverse high tensile tie steel (grade 460) and is given by 0.5 (ø / 20+1) ² 1.0 and ø ³ 8mm.  = transverse joint factor = 0.5 (w / 600+1), w = width of hollow core unit. fcp = average concrete cylinder strength = 0.8 x average cube strength of the in-situ and precast concrete. Ecp = average value of elastic modulus of the insitu and precast concrete. gv = partial safety factor for shear stud.

2. EFFECTIVE WIDTH OF COMPRESSION AREA Beff =

ø fy 16 460

300 s

40 fcu

-0.33

*1000+2.5g

ø = transverse reinforcement diameter fcu = concrete strength s = bar spacing fy = reinforcement strength g = gap


SECTION

04

DESIGN CONSIDERATIONS

Beff Insitu Concrete

Shear Stud

Hollow Core Slab

D

slab

P. N. A. D

Transverse Reinforcement Steel Beam

Rc = 0.45 x f cu; beff x D

slab

P. N. A. Py

Py



PART A MASONRY BUILDINGS CONSTRUCTION SOLUTIONS The Building Regulations Part A December 2004 introduced a system of classification of buildings to reflect the risk of disproportionate collapse probabilities. The following solutions give guidance as to the details required for each of the main frame options related to Hollow Core slabs.

Class 1 and 2A Buildings Flats, apartments and other residential buildings not exceeding 4 storeys. Provision of effective anchorage to satisfy Building Regulations from ‘building in’ of Hollow Core units.

Class 2B Buildings (Horizontal Ties only + notional removal) Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys. All design and details for horizontal tying in accordance with BS5628 Part 1 and BS8110 Part 1.

DETAILS FOR TYPE 1 & 2A EXTERNAL

EXTERNAL

LOAD BEARING CAVITY WALL DETAIL

NON-LOAD BEARING CAVITY WALL DETAIL

Bison precast

Bison precast

Bison precast

Bison precast

concrete Hollow

concrete Hollow

concrete Hollow

concrete Hollow

Core slab unit

Core slab unit

Core slab unit

Core slab unit

Solid block wall

100 mm min.

Solid block wall

100 mm min.

100 mm min.

Continuous wet

Continuous wet

mortar, by builder,

mortar, by builder,

to take up camber

to take up camber

Solid block wall

Solid block wall

100 mm min.

Reinforcement to suit Reinforcement to suit

In-situ

In-situ

concrete stitch

concrete stitch

42

Structural Engineer’s


design

design

Reinforcement to suit Reinforcement to suit

10 mm dia. high yield 10 mm dia. high yield

In-situ

In-situ

‘U’ bar per trough

concrete stitch

concrete stitch

Bison precast

Bison precast

concrete Hollow

concrete Hollow

Core slab

Core slab

Continuous wet

Continuous wet

mortar, by builder,

mortar, by builder,

to take up camber

to take up camber


For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk Bison precast concrete Bison precast concrete Hollow Core slab unit Hollow Core slab unit with perforated troughs with perforated troughs for tying requirements for tying requirements



design

design

150 mm wide perforated150 mm wide perforated pocket along the edge pocket along the edge of slab unit at 1200 mmof slab unit at 1200 mm centreswith 10 mm dia. centreswith 10 mm dia.

on precast

ncrete Hollow

re slab unit

SECTION

05

PART A MASONRY BUILDINGS CONSTRUCTION SOLUTIONS Class 2B Buildings (Horizontal and Vertical Ties) Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys. All design and details for horizontal and vertical tying in accordance with BS5628 Part 1and BS8110 Part 1 for Class 2B and Class 3 Buildings.

Class 3 Buildings (Horizontal and Vertical Ties + Risk Assessment) All buildings defined above as Class 2A and 2B that exceed the limits on area and/or number of storeys. Bison precast

Bison precast

Bison precast

Core slab unit

Core slab unit

Core slab unit

All concrete designHollow and details for horizontal and vertical tying in accordance concrete with BS5628 BS8110 Hollow Part 1and concrete Hollow Part 1 for Class 2B and Class 3 Buildings. Solid block wall

100 mm min.

Solid block wall

100 mm min.

Continuous wet

Continuous wet

mortar, by builder,

mortar, by builder,

to take up camber

to take up camber

Solid block wall

Solid block wall

100 mm min.

100 mm min.

EXTERNAL

EXTERNAL

LOAD BEARING CAVITY WALL DETAIL

NON-LOAD BEARING CAVITY WALL DETAIL

situ

In-situ

ncrete stitch

concrete stitch

140 mm

Reinforcement to suit




design

design

10 mm dia. high yield

10 mm dia. high yield

In-situ



concrete stitch

concrete stitch

Bison precast

Bison precast

concrete Hollow

concrete Hollow

Core slab

Core slab

Continuous wet

Continuous wet

mortar, by builder,

mortar, by builder,

to take up camber

to take up camber

Bison precast concrete


Hollow Core slab unit

Hollow Core slab unit

with perforated troughs

with perforated troughs

for tying requirements


140 mm

In-situ

140 mm





design

design

150 mm wide perforated


pocket along the edge


of slab unit at 1200 mm


centreswith 10 mm dia.


‘U’ bar per socket


140 mm



PART A CONCRETE FRAMED BUILDINGS CONSTRUCTION SOLUTIONS Class 2B Buildings (Horizontal and Vertical Ties) Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys.

Class 3 Buildings + (Risk Assessment) All buildings defined above as Class 2A and 2B that exceed the limits on area and/or number of storeys. All design and details for horizontal and vertical tying in accordance with BS8810 Part 1 for Class 2B and Class 3 Buildings.

TYPICAL SECTION

TYPICAL SECTION

INTERNAL WALL (LOAD BEARING)

EXTERNAL WALL (LOAD BEARING)

Grout joint

Grout joint

In-situ

In-situ

concrete infill

concrete infill

Reinforcement to suitReinforcement to suit Structural Engineer’s Structural Engineer’s design

Bison precast concrete 10 mm dia. Bison precast concrete Hollow Core slab

Hollow Core slab

‘U’ bar in troughts

Grout joint

Grout joint

In-situ

In-situ

concrete infill

concrete infill

Wire loop

Wire loop

connections

connections


design

10 mm dia.

10 mm dia.

10 mm dia.


‘U’ bar in

‘U’ bar in

troughts

troughts

design

Bison precast concrete Bison precast concrete Hollow Core slab 175 mm

Grout joint

Grout joint

In-situ

In-situ

concrete infill

concrete infill

150 mm

175 mm


design

Grout joint

Grout joint

In-situ

In-situ

concrete infill

concrete infill

Wire loop

Wire loop

connections

connections

150 mm


pocket along the edge pocket along the edge Bison precast concrete Bison precast concrete of slab unit at 1200 mm of slab unit at 1200 mm Hollow Core slab Hollow Core slab centre swith 10 mm dia. centre swith 10 mm dia.

Hollow Core slab


175 mm

design

150 mm wide perforated 150 mm wide perforated

Bison precast concrete Bison precast concrete Hollow Core slab

Hollow Core slab

175 mm

150 mm


150 mm


SECTION Grout joint In-situ concrete infill

Grout joint





design

design

Grout joint

Grout joint

PART A CONCRETE FRAMED BUILDINGS In-situ

concrete infill

CONSTRUCTION SOLUTIONS

In-situ

In-situ

concrete infill

concrete infill

Wire loop

Wire loop

connections

connections

05





design

design


10 mm dia. Bison precast concrete

10 mm dia.

10 mm dia.

10 mm dia.

Hollow Core slab

Hollow Core slab ‘U’ bar in troughts


‘U’ bar in

‘U’ bar in

troughts

troughts



Hollow Core slab

Hollow Core slab

175 mm

150 mm

175 mm

150 mm

TYPICAL SECTION

TYPICAL SECTION

INTERNAL WALL (NON-LOAD BEARING)

EXTERNAL WALL (NON-LOAD BEARING)

Grout joint

Grout joint

In-situ

In-situ

concrete infill

concrete infill





design

design



Hollow Core slab

Hollow Core slab

Grout joint

Grout joint

In-situ

In-situ

concrete infill

concrete infill

Wire loop

Wire loop

connections

connections

Bison precast concrete Hollow Core slab





design

design



pocket along the edge Bison precast concrete of slab unit at 1200 mm Hollow Core slab centre swith 10 mm dia. ‘U’ bar per socket

175 mm

175 mm

150 mm

pocket along the edge of slab unit at 1200 mm centre swith 10 mm dia. ‘U’ bar per socket

150 mm



PART A STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS Class 1 and 2A Buildings Apartments and other residential buildings not exceeding 4 storeys. This type of building uses the friction and built-in details to achieve tying requirements.

TYPICAL SECTION EXTERNAL STEELWORK DETAILS

In-situ

In-situ

In-situ

concrete stitch

concrete stitch

concrete stitch

Continuous wet mortar

Continuou

by Builder, to take up

by Builder,

camber

camber

Bison precast

Bison precast

Bison precast

Bison precast

Bison precast

Bison precast

Bison prec

concrete Hollow

concrete Hollow

concrete Hollow

concrete Hollow

concrete Hollow

concrete Hollow

concrete H

Core slab unit

Core slab unit

Core slab unit

Core slab unit

Core slab unit

Core slab unit

Core slab

In-situ concrete stitch

In-situ concrete stitch 150 mm wide perforated

150 mm w





pocket alo





of slab uni

design welded to top




centreswith

flange of steel beam at

flange of steel beam at

flange of steel beam at ‘U’ bar per socket

trough bottom

trough bottom

trough bottom




‘U’ bar per



Shear stud

Shear stud

Bison precast

Bison precast

concrete Hollow

concrete Hollow

Core slab unit

Core slab unit Bison precast concrete


Bison precast concrete Bison precast

Bison prec



Hollow Core slab units


Hollow Core slab units concrete Hollow

concrete H


with preformed troughs


with preformed troughs Core slab unit

Core slab

design




46Structural Engineer’s design


Continuous wet

Continuou

mortar, by Builder,

mortar, by

to take up camber

to take up

SECTION

05

PART A STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS In-situ

In-situ

In-situ

concrete stitch

concrete stitch

Continuous wet mo Continuous wet mortar

concrete stitch

by Builder, to take up

Class 2B Buildings (Horizontal and Vertical Ties)

by Builder, to take camber

camber

Flats, apartments and other residential buildings greater than 4 storeys but not exceeding 15 storeys.

Class 3 Buildings (Horizontal and Vertical Ties + Risk Assessment) Bison precast concrete Hollow

precast precast precast All buildings defined Bison above as Class 2A and 2B that exceed theBison limits on area and/or number ofBison storeys.

Core slab unit

Bison precast

concrete Hollow

Bison precast

concrete Hollow

concrete Hollow Bison precast

Core slab unit

concrete Hollow

Core slab unit

Core slab unit

concrete Hollow

concrete Hollow

Core slab unit

Core slab unit

Core slab unit

These types of buildings require horizontal and vertical ties which are provided by the steel frame. Additionally the floors must be tied to the steelwork at the perimeter and to each other for internal supports. Additional internal tying of the floor to the steelwork is required where the frame is used for bracing.

TYPICAL SECTION EXTERNAL STEELWORK DETAILS In-situ concrete stitch


150 mm wide perfo

trough bottom

trough bottom

150 mm wide perforated Reinforcement to suit pocket along the edge Structural Engineer’s of slab unit at 1200 mm design welded to top centreswith 10 mm dia. flange of steel beam at ‘U’ bar per socket trough bottom






precast Bison precast Bison concrete

Bison precast



concrete Hollow




concrete Hollow Core slab units Hollow slab unit with preformedCore troughs

design



Reinforcement to suit Structural Engineer’s



Shear stud

Shear stud

Bison precast

Bison precast

concrete Hollow

concrete Hollow

Core slab unit

Core slab unit



Structural Engineer’s design

design welded to top flange of steel beam at

Reinforcement to suit Structural Engineer’s design welded to top flange of steel beam at

for tying requirements Continuous wet

pocket along the e

of slab unit at 1200

centreswith 10 mm ‘U’ bar per socket

Core slab unit Continuous wet

mortar, by Builder,

mortar, by Builder,

to take up camber

to take up camber



PART E CONSTRUCTION SOLUTIONS The Building Regulations Part E:2003 and the subsequent amendment May 2004 give guidance to the requirements for the resistance to the passage of sound. For new build attached dwellings, two approaches may be made. Part E allows the developer to choose between Pre Completion Testing (PCT) or, if available, a Robust Detail (RD) may be used by registering plots with Robust Details Ltd. The Pre Completion Testing (PCT) and the Robust Detail (RD) requirements are given below.

Building Regulations Approved Document Part E Airborne sound:

New Build

Change of use

Walls

min 45dB

min 43dB

Floors

min 45 dB

min 43dB

termed DnT,w +Ctr

max 62 dB

max 64 dB

termed LnT,w

Impact sound: Floors

Robust Detail requirements (new build attached dwellings only) Airborne sound:

Min/Max

Mean

Walls

min 47dB

min 50dB

Floors

min 47 dB

termed DnT,w +Ctr

Impact sound: Floors

max 60 dB

max 57 dB


termed LnT,w

SECTION

05

PART E CONSTRUCTION SOLUTIONS TYPICAL SOUND ATTENUATION DETAIL

Min. 100mm thick blockwork medium density (1350-1600kg/m3) Yelofon E-strip acoustic edge strip Nominal 8mm thick parge coat 65mm thick sand/cement screed or Flexible cavity closer

40mm thick proprietary screed, nominal 80kg/m2 mass per unit area

10mm Yelofon HD10+ 200mm

100mm min. 200mm deep Bison Hollow Core slab units (300kg/m2) Gypsum-based board (nominal 8kg/m2) mounted on dabs on cement/sand render (nominal 8mm) with scratch finish 100

75

100

275mm min.



PART E MASONRY BUILDINGS CONSTRUCTION SOLUTIONS ROBUST DETAILS SEPARATING FLOOR - CONCRETE E-FC-1 1

2

3

4

PRECAST CONCRETE HOLLOW CORE FLOOR SLAB, SCREED 1. Floating floor See section 4 (Robust Details Handbook) for suitable floating floor treatment. 2.

Screed 40mm (min) screed directly applied to Hollow Core floor slabs - sand/cement or proprietary screed nominal 80 kg/m2 mass per unit area, see Appendix A (Robust Details Handbook).

3. Structural floor 150mm (min) precast concrete Hollow Core floor slab - 300kg/m2 mass per unit area. 4. Ceiling See section 3 (Robust Details Handbook) for suitable ceiling treatment.

ROBUST DETAILS SEPARATING FLOOR - CONCRETE E-FC-4 1

2

3

4

PRECAST CONCRETE HOLLOW CORE FLOOR SLAB, SCREED LAID ON ISORUBBER RESILIENT LAYER 1. Screed 65mm (min) sand/cement screed, or 40mm (min) proprietary screed, nominal 80kg/m2 mass per unit area. 2. Resilient layer 6mm IsoRubber layer with IsoEdge flanking strip. 3. Structural floor 150mm (min) precast concrete Hollow Core floor slab - 300kg/m 2 mass per unit area. 4. Ceiling See section 3 (Robust Details Handbook) for suitable ceiling treatment which is dependent on floorplank depth and supporting wall density.

The requirements for a robust detail are taken from the Robust Details Part E Handbook. The latest requirements should always be sought from Robust Details Ltd.


SECTION

05

PART E MASONRY BUILDINGS CONSTRUCTION SOLUTIONS ROBUST DETAILS SEPARATING FLOOR - CONCRETE E-FC-5 1

2

3

4

PRECAST CONCRETE HOLLOW CORE FLOOR SLAB, SCREED LAID ON ISORUBBER RESILIENT LAYER 1. Screed 65mm (min) sand/cement screed, or 40mm (min) proprietary screed, nominal 80kg/m2 mass per unit area. 2. Resilient layer YELOfon HD10+ with E-strip perimeter edging and J-strip tape for jointing. 3. Structural floor 150mm (min) precast concrete Hollow Core floor slab - 300kg/m 2 mass per unit area. 4. Ceiling See section 3 (Robust Details Handbook) for suitable ceiling treatment which is dependent on floorplank depth and supporting wall density.


4

14

5

15

6

16

7

17

8


PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS TYPICAL DETAIL MASONRY WALLS

TYPICAL DETAIL STUD WALLS

INTERNAL SEPARATING FLOOR AND WALL


100

74 100

30 min.

1

10

30 min.

1

11

1

2

12

2

3

13

3

100

74 100

2

30 min.

30 min.

11

9

12

10

13

11

14

12 13

5 6

14

4

5

15

5

6

16

6

7

8

15

8

16

9

7

17

8

17

10

10 Nominal 8mm thick parge coat (by Lafarge).

2 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge).

11 12.5mm thick Echeck wallboard (by Lafarge).

3 Minimum 10mm Yelofon HD 10+ (by Cellecta).

12 Skirting board.

4 Min. 12.5mm thick ‘Lafarge’ Gypsum based ceiling

13 Yelofon J-strip acoustic jointing tape (by Cellecta).

30 14 150 or 200mm min. deep ‘Bison Hollow Core min.

mm min. board (min. 8kg/m2)335suspended from a proprietary 9 275 mm min. support system.

10 11

2

12

3

13

8 Proprietary sliding brick anchor system.

9 Min. 100mm thick blockwork (medium density)

1800 -2300g/m3.

4

14

5

15

100

100

2 floor units’ (300kg/m ). 1

16 17 18

11 12

15 Grouted void between P.C. units. 2

13

16 12.5mm thick Echeck wallboard (by Lafarge)

14

100 200 min. Bison Units

1


6 Soft joint. 7 Compressible filler board.

102

15

19

1 Yelofon E-strip acoustic edge strip (by Cellecta).

100 74 100 30 30 5 Acoustic quilt (by min. Rockwool). min.

52

14


4

4

7




3

encasement to steelwork. Restrained via proprietary framing system. 3 17 12.5mm thick Echeck wallboard (by Lafarge) 4 tacken up to u/side of floor providing 1.0 hour fire protection to 5 steelwork. 6

15 7

8 6 16 For EXTENSIVE TECHNICAL DETAILS PLEASE VISIT our website: www.bison.co.uk 9 7 17 10 8

16 17 18 19


30 min.

100

275 mm min.


275 mm min.


335 mm102 min. 100

9


335 mm min.

6 4

14

5

15

6

16

7

15 7

16

8

17

9

18

10

19

17

8

SECTION

05

PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS TYPICAL DETAIL MASONRY WALLS

TYPICAL DETAIL MASONRY WALLS

EXTERNAL WALL AND SEPARATING FLOOR


1 100

74 100

30 min.

2

1 2 3

100

100

30 min.

11

11

10

12

1

12

11

13

2

13

12

14

13 4 5 6



3

4

102

9

14

3 4 5 6

14

15

15

5

7

15

16

7

16

6

8

16

17

8

17

18

9

18

19

10

19

9

7

17

10

8


30 min.

30 min.


100


100

275 mm min.


335 mm min. 102


13 Skirting board.


14 Min. 10mm Yelofon HD10+ (by Cellecta).



4 Flexible cavity closer.

board (min. 8kg/m2) suspended from a proprietary support system.

16 150 or 200mm min. deep ‘Bison Hollow Core

6 Compressible filler board. 1

12

2 joint. 7 Soft

13

17 2 No. layers of Echeck wallboard (by Lafarge)

8 External leaf.

14

9 Proprietary sliding brick anchor system. 3


11


30 5 Acoustic 102 quilt100(by100Rockwool). min.

10 Proprietary wall ties in accordance with approved

4 document ‘E’ (2003), section 2.

floor units’ (300kg/m2). encasement to steelwork. Restrained via proprietary framing system.


taken up to u/side of floor providing 1.0 hour fire protection to steelwork.

5 11 Nominal 8mm thick parge coat (by Lafarge).

19 Min. 100mm thick blockwork (medium density)

6 12 12.5mm thick Echeck wallboard (by Lafarge).

1800 -2300g/m3.

15 7

16

8 17 For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334 9 18 10

19

53

4

12

5

13

6

14

7 8

15


PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS TYPICAL DETAIL STUD WALLS



INTERNAL WALL AND SEPARATING FLOOR

1

9

9

2

10

2

2

10 10

3

11

3

3

11 11 150 150 min. Bison Units


4 5 6


1

150 150 100 200 min. Bison Bison Units Units min.

9


1

7 4

12

4

5

13

5

13 13

6

14

6

14 14

7

15

8

15 16

7 8

15

8

12 12

17 18


9 RSP 38 modified Lafarge stud system studs.

2 Minimum 40mm thick ‘Gyvlon’ Screed (by Lafarge). 3 Minimum 10mm Yelofon HD 10+ (by Cellecta). 4 10mm Aerofoil isolation layer. 5 Min.112.5mm thick ‘Lafarge’ Gypsum based ceiling 9 board (min. 8kg/m2) suspended from a proprietary 2 10 support system.

10

4 12 150 or 200mm min. deep Bison Hollow Core

floor units5 (300kg/m2).

6 13 Grouted void between P.C. units. 7


4

12

5

13

6

14

15 Deflection head detail.

8 to steelwork. Restrained via encasement proprietary framing system.

7 8

12 13 14 15

15

16 17

54

18



8 RSP 38 modified Lafarge stud system.

10 Timber sole 2 plate.


7 Deflection Tolerance.

Two 50mm C studs at 600mm centres. Facings. 2 layers Lafarge 15mm dBcheck wallboard both sides. Insulation. 3 50mm glass mineral wool density 19.5 kg/m9 . 1

3 11 11 Yelofon J-strip acoustic jointing tape (by Cellecta).

11 100 200 min. Bison Units

3

6 Acoustic quilt.


4

12

5

13

8

12 13

6

14

14

7

15

8

15

16 17 18 SECTION

05

PART E STEEL FRAMED BUILDINGS CONSTRUCTION SOLUTIONS TYPICAL DETAIL STUD WALLS

EXTERNAL SEPARATING FLOOR AND WALL


1

9

9

1

9

2

2

10

10

2

10

3

3

11

11

3

11

6

5 6

7 4


5

4



4

100 200 min. Bison Units 150 150 min. Bison Units

1

7 12

12

5

13

13

13

6

14

14

14

15

15

16

16

17

17

18

18

8

7 8

15

8

1 Tyvek breather membrane 12.5 moisture resistant

wallboard and 36mm polyfoam plus.

3 Yelofon J-strip acoustic jointing tape (by Cellecta). 1

9

2

10

5 8 External cladding 102mm brick or 100mm

block 6 + 16mm render.

9 Lafarge stud system studs. 7

13 150 or 200mm min. deep Bison Hollow Core

11

7 Acoustic quilt (by Rockwool). 4

12 Minimum 10mm Yelofon HD 10+ (by Cellecta). floor units (300kg/m2).


CS90/Y Lafarge C studs at 600mm centres. 8 12 Facings. 13 1 layer Lafarge 12.5mm firecheck wallboard 14 on 1 layer 12.5mm vapourcheck wallboard. Insulation. 15 90mm rockwool flex.


6 Flexible cavity closer. 3

10 Skirting board.


5 10mm Aerofoil isolation layer.

12


2 Yelofon E-strip acoustic edge strip (by Cellecta). 4 Timber sole plate.




15 2No. layers of Echeck wallboard (by Lafarge)

encasement to steelwork. Restrained via proprietary framing system.

16 Deflection tolerance. 17 Deflection head detail. 18 Lafarge stud system (see above).

16 17 18

For further HELP AND INFORMATION PLEASE CALL OUR TECHNICAL HELP LINE: 01283 495334

55

2

9

3

10


4

11

5

12

6

13


8


1

PART E CONCRETE WALLS CONSTRUCTION SOLUTIONS

175 mm

TYPICAL DETAIL SECTION


A TYPICAL INTERNAL SEPARATING WALL

A TYPICAL INTERNAL SEPARATING WALL

2

9

2

3

10

3

7 8

8

1

9

9

2

10

10 150 150 min. Bison Units


3 4 5

4

11

4

6

11

11

5

12

5

7

12

12

6

13

6

13

13


1

150


8


1

100

100 200 min. Bison 150 150Units min. Bison Units

102


7

14

175 mm

175 mm 150 mm


8 Dry pack mortar.

2 Minimum 40mm thick ‘Gyvlon’ Screed 7 (by Lafarge).

9 Skirting board.

3 Minimum 10mm Yelofon HD 10+ (by 8 Cellecta). 1

10 Yelofon J-strip acoustic jointing tape (by Cellecta). 8

4 Min. 2 12.5mm thick ‘Lafarge’ Gypsum9based ceiling

11 150 or 200mm min. deep ‘Bison Hollow Core9 1

5 Acoustic sealant. 6 175mm thick concrete wall. 7 3mm Plaster skim on

4 15mm 12mm 5 35mm 6 25mm

11 Lafarge wallboard Metal furring channel on dabs 12 cavity with 13 mineral fibre.


board (min. 8kg/m2) suspended from a proprietary 3 10 support system. 150 150 min. Bison Units

102

100

150

floor units (300kg/m2). 2 12 In-situ concrete infill. 3 13 3mm Plaster skim on 4 15mm Lafarge wallboard 5 furring channel on dabs 12mm Metal 35mm cavity with 6 25mm mineral fibre. 7

10

11 12 13 14

175 mm

150 mm


7

102

100

150

1

8

2

9

1

9

3

10

2

10

4 5

SECTION

4

11

6

11

5

12

7

12

05

13

13

PART E CONCRETE WALLS

14

CONSTRUCTION SOLUTIONS 175 mm

150 mm



THROUGH A TYPICAL EXTERNAL WALL

THROUGH A TYPICAL EXTERNAL WALL

102

100

150

1

7

102

8

8

100

150

8

9

9

1

9

3

2

10

10

2

10

5


4

3



3


1


2

4 5

4

6

11

11

6

11

5

7

12

12

7

12

13

13

13

14

14

6

175 mm

150 mm

150 mm


8 3mm Plaster skim on

8

1

9

9 Skirting board.

2

10



5 In-situ concrete infill. 6 150mm concrete wall. 3

7 3mm Plaster skim on 4 15mm 12mm 5 35mm 6 25mm

Lafarge wallboard Metal furring channel on dabs cavity with 11 mineral fibre.

7


4 Flexible cavity closer.


102 100 3 Dry pack mortar.150


6



3



8

15mm 12mm 35mm 25mm

Lafarge wallboard Metal furring channel on dabs cavity with mineral fibre.

11 Minimum 10mm Yelofon HD 10+ (by Cellecta). 12 150 or 200mm min. deep Bison Hollow Core

floor units (300kg/m2).


12


13

14 Acoustic sealant.

14

150 mm


TECHNICAL SPECIFICATIONS & HEALTH AND SAFETY

BISON PRECAST FLOORING SPECIFICATIONS MANUFACTURE 1.1

Bison floors are manufactured by the long line prestressed method using slip form or extrusion techniques. The units are cast on heated steel beds within an enclosed factory environment.

1.2

The materials used in the manufacture of Bison floors comply with the relevant British Standard for that material.

1.3

An air entraining agent complying with BS EN 934-2-2001 is included in the concrete mix to improve workability.

1.4

Reinforcement is generally 5mm diameter high tensile wire or 12.5mm diameter strand complying with the requirements of B.S.5896:1980.

1.5

Bison units are sawn to length on the manufacturing bed and are supplied as standard with plain sawn ends with open cores.

DIMENSIONS 2.1

2.2 2.3 2.4

Bison units are manufactured in nominal sizes as follows : Standard nominal width of all units is 1200mm. Solid : Depth 75mm 100mm Hollow : Depth 150mm 200mm 260mm 300mm 250mm 400mm 450mm Cross-sectional tolerances are within the limits set out in clause 6.2.8.3. of B.S. 8110:1997. Length tolerances are ± 20 mm. Bison units will have an upward camber due to pre-stressing as described in clause 6.2.8.4. of B.S.8110:1997. Edges are shaped to form a grout joint giving a shear key to distribute load to adjacent units. Where non-standard widths are provided the edge will be rough cut from a standard unit.

FINISHES 3.1

Concrete surface finish to soffit is Type A finish as described in clause 6.2.7.3. of B.S.8110:1997. The soffit is suitable for the direct application of a textured paint finish where this is applied in accordance with the manufacturers instructions. Where a plaster finish is intended it may be necessary to use a bonding agent in accordance with the instructions of the plaster manufacturer. Plaster finishes are not recommended on longer spans.

3.2

Sides and top surfaces are ‘as extruded’ as described in Table 5.5 of B.S.8110:1997.

3.3

Units may accumulate water within the cores due to exposure during the construction programme. The General Contractor should drill weep holes as necessary, or keep them clear where they are provided during manufacture.


SECTION

06

BISON PRECAST FLOORING SPECIFICATIONS DESIGN 4.1

The design of Bison units is in accordance with the requirements and recommendations of B.S.8110:1997 “The Structural Use of Concrete.”

4.2 4.3

Load/Span capacity : The reinforcement pattern within a Bison section will vary according to the design loading specified.

4.4

Exposure Condition : The standard Bison section is suitable for a XCI exposure classification as defined in Table 3.2 of BS 8500:2002. Other exposure classes can be adopted subject to design approval from Bison Technical Department. Fire Resistance : Fire resistance is based upon the tabulated data contained within B.S. 8110 Part 2 Section 4. Sections are available for fire periods of 1 hour or 2 hours, without the addition of further finishes.These periods of fire resistance may be further enhanced by the application of appropriate finishes.

4.5 4.6

Serviceability : The standard Bison section is designed to meet the criteria of Class 3 as set out in clause 4.1.3 of B.S.8110.1997 Designs to Class 1 and Class 2 are available if required.

4.7

Horizontal & Vertical Ties : Ties necessary to satisfy the requirements for accidental damage should be specified by the Engineer with responsibility for the design of the overall structure in accordance with the Code of Practice.

Sound Insulation : The requirements of The Building Regulations are that a floor construction incorporating the use of precast concrete units should have a minimum mass which is dependent upon whether the finishes to the top surface are directly applied or are on a separating layer. The mass of Bison unit sections are given in the technical data and are net weights of standard hollow sections.

4.8 Bearings : Level and structurally adequate bearings for Bison precast units should be provided by other contractors. These should generally be 100 mm for masonry or 75 mm for concrete or steelwork, but may be reduced in accordance with clause 5.2.3 of B.S.8110:1997. 4.9 Holes : Small holes up to 60 mm diameter may be drilled on site through the Hollow Cores, care being taken to avoid damage to the reinforced ribs. Larger holes may be cut subject to the design capacity of the slab. 4.10 Grouting : Joints between units should be grouted with a 30 N/mm2 concrete using a 6 mm nominal aggregate size. 4.11

Propping : Where the slab design requires site propping, this should be carried out in strict accordance with the Bison drawings.


TECHNICAL SPECIFICATIONS & HEALTH AND SAFETY

BISON PRECAST FLOORING SPECIFICATIONS QUALITY ASSURANCE Bison operates a Quality Management System which complies with the requirements of ISO 9001: 2000 for the following scope: design, manufacture and erection of ancillary cube products (including reinforced and normally reinforced concrete). Prestressed floor units are subject to end product testing. Prestressed and ancillary concrete is subject to full design approval, traceable to current codes of practise statutory/regulatory requirements. All Bison U.K. factories have been assessed by the British Standards Institution (B.S.I.) and awarded Certificates of Assessed Capability under the scheme covering Quality Assurance for the manufacture of precast concrete floors. As a customer, you can be sure that all aspects of our production, design detailing and quality control have been independently inspected and have achieved the high level of competence and quality required by the British Standards Institution. The company maintains a policy of continuous development, and reserves the right to change specification and details without prior notice.

FM 00011

BISON PRECAST FLOORING HEALTH & SAFETY This information must be read in conjunction with: •

Health , Safety & Welfare Attendances (supply & erect only).

•

C.O.S.H.H information sheet – Precast Elements.

•

Unit weight table.

•

Information sheet: Lifters & Chains, supplier hire or purchase.

•

Technical Information Sheet, Handling & Fixing Instructions for:

Sheet No.

TI/304/10

Hollow Core

Sheet No.

TI/304/11

Solid Composite Precast Elements

Sheet No.

TI/304/12

Prestressed Housebeam & Deepbeam

Sheet No.

TI/304/13

Bison Precast Stairs & Landings

Sheet No.

TI/304/15

Floor products with cast-in lifters

Sheet No.

TI/304/16

Trailasafe®

The Bison website www.bison.co.uk contains detailed information and data sheets on all products. Alternatively call the Health & Safety Department at our Burton office Tel 01283 495000 .


SECTION

06

BISON PRECAST FLOORING HEALTH AND SAFETY Safety Do’s & Don’ts The do’s & don’ts listed below are by no means fully exhaustive-you should also refer to the current issue of the Precast Flooring Federation Code of Practice available on Tel 0116 253 6161. •

Do not alter the product without written permission from Bison Design Office, altering the product may compromise its structural integrity and lead to failure. This includes notching, hole forming, shortening, narrowing the unit etc.

•

Do not alter the product in-situ, any permissible alterations must be completed on a flat stable platform. i.e. on the ground or floor area.

•

Do not allow anyone to walk or work beneath the product whilst it is being hoisted or suspended.

•

Do not work in areas without the appropriate perimeter edge protection, handrails, guardrails, platforms or stages.

•

Do not access working areas without properly constructed, maintained, secured and illuminated, stairways, ramps, ladders or the like.

•

Where lifting hooks are specified within a contract, do hoist the units by crane using ALL the lifting points in the top surface provided for that purpose. Prior to lifting safety chains must be loosely slung around the underside of the unit. The safety chains may only be released immediately before the slab is placed in its final position.

•

For insurance purposes, Bison do not supply or hire lifters or chain sets. Please refer to our information sheets for details of supplier hire or purchase.

•

Do not run plant or store equipment on the precast floor before it is grouted and cured. Once cured do not exceed the loads specified by the engineer.

•

Do use a passive fall protection system wherever reasonably practicable considering all heights where the potential fall distance could result in an injury.

•

Do ensure that perimeter edge scaffolding is positioned no more than 900mm below the bearing level particularly on masonry construction.

•

Do ensure all voids created whilst placing units are adequately protected during and after erection.

•

Do ensure all brickwork, blockwork or concrete is adequately cured, stable and fit to receive precast concrete units, and that steelwork is stable.

•

Do ensure the stability of support beams, lintels etc. is considered, particularly the rotation of support member due to unequal loading.

•

Do ensure you include allowance for site handling by referring to the unit weight table.

•

Do ensure that all lifting equipment is supplied, used and inspected in accordance with current legislation.

•

Do ensure all lifting operations are completed and in accordance with current legislation.

•

Do wear adequate personal protective equipment (PPE) whilst handling or cutting concrete.

NOTE; Due to the principle constituents of cement, the liquid released whilst drilling drainage points etc is likely to have a caustic effect on the eyes and skin. For further information or to obtain the latest issue COSHH data sheet for cement call our Health & Safety Department at our Burton office Tel 01283 495000.


RELATED PRODUCTS

Lifting hook being loaded into machine.

From transport to final position with ease and speed.

Bison Lifting Hooks This is a unique system from Bison, available with our Hollow Core flooring. The hooks are machine inserted during the production process, for which Bison holds the European patent. The hooks enable faster, safer and more accurate erection. They also offer cost savings by minimising damage to soffit and blockwork bearings.

HEATED AND COOLED SLABS Bison and velta have joined forces to provide an innovative, sustainable and cost effective floor heating and cooling system which is precast in to Bison flooring products.

DESIGN

MANUFACTURING

The system utilises low temperature water for heating and high

Precast concrete elements are designed and constructed in

temperature water for cooling to condition a building, which

the factory with a velta PE-Xa pipe matrix cast directly into the

provides the opportunity to use renewable energy sources.

precast slab or Hollow Core unit to offer a combined heating

A sustainable alternative, which can significantly reduce

and cooling solution.

CO2 emissions over the life of the building.

This service covers the design, off-site manufacture and

Substantial savings in investment, maintenance and

installation of precast, pre-stressed Hollow Core flooring,

operational costs, compared to conventional

precast multi-storey wall panel structures and other bespoke

air-conditioning systems.

solutions with an in built heating and cooling capability.

The requirements for flexible space utilisation and variable partitioning are easily met. Clear benefits to occupants, no noise and no draughts, producing a comfortable and productive environment.

CONSTRUCTION Off-site production reduces construction programmes and improves quality control. Elimination of suspended ceilings can reduce building

62

height and lower construction costs.


SECTION

07

HEALTH AND SAFETY PRODUCTS Health and Safety is a major concern for Bison, and we have developed a range of methods and systems which help to ensure that anyone using Bison products can do so with minimal risk to themselves or others.

Trailasafe® Trailasafe® is designed to prevent or mitigate injuries resulting from falls from trailer decks. Comprising synthetic mesh suspended from a series of brackets housing support arms, the system arrests the fall of personnel, absorbing the energy of their descent and ensuring their safety. Fully demountable, the system can be stored within the vehicle or at the unloading point.

THE BISON AIR MAT The Bison Air Mat system has been tested by the BRE and approved by the HSE. The Bison Air Mat system comprises a series of interconnected and interlinked mats available in a wide range of standard sizes. Using a combination of modules they will accommodate almost any floor area. Where the edges of an area to be protected are open, or have large vertical voids that may pose the hazard of “roll-off” fall to a lower area, special parapet and corner mats can be provided.

Hole Covers Voids such as service holes, formed in precast floor units are trip hazards and have the potential to cause serious injuries. Bison’s solution is the Hole Filler: a strong yet slimlined product which is suitable for most holes. The yellow, anti-slip cover is fully reusable and comes in two sizes, 250mm or 350mm square. Each may be either screwed down or fitted without the need for power tools, by spreading the unit legs, locking it into position.


BISON ONLINE

www.bison.co.uk For further information on Bison Precast Concrete Flooring and the full range of Bison products and services, visit www.bison.co.uk or call the Bison sales team on 01283 495000


SECTION

08

FLOORS HOLLOW CORE FLOORS

HOLLOW CORE COMPOSITE FLOORS

SOLID COMPOSITE FLOORS

BEAM AND BLOCK FLOORS


HOLLOW CORE INSULATED FLOORS

FRAMES

STADIA

STAIRS

HEALTH AND SAFETY LIFTING HOOKS

TRAILASAFE®

AIR MATS


BISON NOTES


SECTION

09


BISON CONCRETE PRODUCTS Ltd Millennium Court, First Avenue, Centrum 100, Burton-Upon-Trent DE14 2WR Telephone: 01283 495000 Facsimile: 01283 544900 Email: [email protected] Web: www.bison.co.uk

OTHER BROCHURES AVAILABLE • Staircases • Stadia Products • Crosswalls • Lattice Flooring • Beam & Block Flooring • Safety Systems

Printed on 100% recyclable paper using vegetable based inks

August 2007

All dimensions and illustrations in this publication are intended for guidance only and shall not constitute a “sale by description”. All dimensions given are nominal and Bison Limited may modify and change the information, products and specifications from time to time for a variety of reasons without prior notice. The information printed in this publication at the time of going to print, to the best of our knowledge, is correct and is not intended to have any legal effect, whether by way of advice, representation or warranty (express or implied). We accept no liability whatsoever (to the extent permitted by law) if you place any reliance on this guide you must do so at your own risk. All rights reserved. Copyright in this publication belongs to Bison and all such copyright may not be used, sold, copied or reproduced, in whole or part, in any manner or in any media to any person without prior written consent.

CONCRETE FLOORING - Bison Manufacturing

Recommend Documents