aarvee associates
architects enginees & consultants pvt. ltd,
Letter No: AA/HWNHAI/1493/ L4-t5/073 Date 02d May, 20!4. To
The Authorised ReDresentative Transstroy Hoskote - Dobbaspet Tollways Private Limited, Survey No - 2O8/l,Vishwanathapura (Post), Kundana Hobli, Devanahalli Talub Bangalore Rural District.- 562 110.
Four-laning of Hoskote-Dobbaspet Section of NH-207 from Km 58+000 to Km 138+320 in the State of Karnataka under NHDP-Phase-IV to be executed as BOT (Toll) on DBFOT Basis Comments on Typical Designs and Drawings for Box Culverts.
-
Ref:
1. NHAI/26056/1 120t4 IPIU-BNG|5251, dated 26.03.2014. 2. TTY/HDD/NHAI/coNc/sTR/1, dated 28.06.2013.
Dear Sir.
This has reference to your submission of Typical Designs and Drawings for Box Culveds,, vide your letter cited above, addressed to the Project Director, NHAI which was forwarded to us vide NHAI letter No. 5251 cited. Your above submission has been reviewed and the followino are our comments: 1)
In your above letter, Typical Designs and Drawings for Box Culverts (without cushion) of sizes lv x 1.5 m x 2.0 m, 1vx2.0mx1.5mandlvx3.0mx2.0m have been submitted.
2)
Reinforcement details of box structures indicated in desiqn reDort does not match with the drawings.
3)
The Hydrology Calculations and Report for all box culverts should be submifted to veriry the adequacy of vent size proposed.
4)
Design calculations and drawings submitted.
s)
Approach slab has not been provided in box culveds without fill. As per Plates 13, Note-E of IRC SP: 13-2004 and MORTH Standard Drawings SDIL0Z to SDltIT, Approach slab should be provided for box type structures without fill, to avoid settlement of approaches.
6)
Total length of culvert shall be shown in the drawings. Details Pipe Railing, Wearing Coat, Approach Slab and Drainaoe shown in the drawinos.
Telr
+91
of
RCC retaining
/
return walls should be
Rovula Resrdency, Sr nagar Colony Mdin Rd , Hyderabdd 500 089, Indid ,10 ?3731633; Fdx +91-40-937369-l1;enail dat ree(qaarree net, web wwwaarvee com
ii2:: Kerb has been shown over median over slab, but details are not incorporated in the drawings, As the base is RCC, the kerb to be provided should also be in RCC (cast monolithic) for stability. Accordingly, kerb details should be incorporated in drawings. You are requested to comply with the above comments and resubmit for our review.
With best regards, for Aarvee
Engineers & Consultants PW. Ltd.,
ore seo CC
to : The Project
PIU, NHAI, Bangalore
