Highway Engineering Consultant
in Association with
LTelford
Telford Consulting Engineers Pvt. Ltd.
Project Office: Flat No. 203
203, FH-03, GTM Forest & Hills, Haridwar Road, Mohkampur, Dehradun-248005
Dehradun
# Hotel Holidays Home, Shakti Nagar, Main Badrinath Road, Karanpryag
Karanpryag-246444(Email-hecltelford.chardham0
hecltelford.chardham04@gmail.com)
Ref: 980014/Contractor/Pkg-III/ 750
Date: 11.08.2022
To,
NKG Infrastructure Limited,
1107, Kailash Building,26 K.G. Marg,
New Delhi- 110001
Email ID:-Khannkg1@gmail.com
Subject: Construction and up gradation of existing road to 22-lane
lane with paved shoulder from Km 430.00 to km 468.000 of
Chamoli to Paini (Excluding km 437.625 to km 437.775, km 458.900 to km 459.475 and km 464.425 to km 464.525) of NHNH
07 under Chardham Priyojna on EPC basis in the state of Uttarakhand
Uttarakhand.
Regarding: Review of Design & drawing of plum wall & RR masonry wall
up to 10 & 11mtr. Height.
Reference: Your letter no: NKG/HEC/CHP
NKG/HEC/CHP-455 dated: 08.08.2022
Drawing no. CP-KQC-BW
BW-101 Rew01
Dear sir,
With reference to the above cited subject, it is reviewed with following observation for reconsideration in the design and
drawing.
1. In design, it has been
een assumed 500 kkm/sqm as safe bearing
earing capacity of soil (SBC), but as per site condition it is
suggested to consider the actual SBC & other soil data taking from soil investigation report.
2. Breast wall is mix type in which bottom raft wil
willl be constructed with plum and remaining half with RR masonry wall.
It should be written clearlyy on the drawing with dimensions and specifications.
3. The concrete mix ratio will be used as 1:2:4 instead of 1:4:8 in the plum wall. The mortar of RR masonry wal
wall will
be 1:3 also instead of 1:5. It should be mentioned in the ‘Note’ of the drawing.
4. Specification of RR Masonry wall should be mentioned in the ‘Note’ of the drawing separately.
5. PCC on the foundation bed and weep holes should be shown in the drawing.
6. Dimensions
imensions and specifications of PCC drain should be mentioned on the drawing.
7. Coping at the top of the wall may bee constructed so that rainwater will flow smoothly.
8. The characteristic compressive strength at 28 days of RR Masonry wall (1 cement:3 sand) shou
should be mentioned in
the ‘Note’ of the drawing.
9. It will be good if 32mm dia SDA bar for anchoring is continued up to 10/11m height of the wall.
With Regards
Manjul Kumar
Team Leader
HEC-LTCEPL
CC.
(i) Executive Director (P) / RO NHIDCL Dehradun
(ii) General manager (P), NHIDCL PMU
PMU-Chamoli
HEC Office: JM-89/3C,
9/3C, Behind Panchwati Market, Saket Nagar, Bhopal (M.
(M.P) PIN- 462024 Phone: +91-755-4236317
+91
LTCE Office:RZF-779/2, Lane No-17, Raj Nagar-2,Dwarka,
2,Dwarka, Sector
Sector-8, Palam, New Delhi-110077 Phone: +91-11- 49095718 (Email- ltelford.consultant@gmail.com)
CIN No. : U74999DL2016PTC305247