Construction of RCC retaining wall at the junction of NH-48 and 58E including Utility Shifting

Earth work in excavation for foundation of structure complete with all lift, dewatering, shoring and shuttering etc., including refilling of trenches in 25mm layers, ramming, watering and disposal of surplus soil within a lead of 1000 metres, as per drawing and technical specification. [MoRTH Specification: Clause 304] - In Ordinary Soil [Clause 301] - Depth up to 3 m. [BSR Item No. 12.1.1.1]

Providing and laying mechanically mixed and vibrated Cement Concrete in foundation, Cement concrete 1:3:6 (nominal mix, equivalent to M-10 grade and below) with stone aggregate 20mm crusher broken, as leveling/blinding course below footing. [MoRTH Specification: Clause 1000/1700]. [BSR Item No. 9.1.4] (Note: BSR 2024 does not list a separate Design-Mix M-10 item; nearest equivalent nominal-mix 1:3:6 item adopted.)

Structural cement concrete (Design Mix) in open foundations, with form work, at any level, using Batching Plant, Transit Mixture and Concrete Pump - R.C.C. M-30 grade, excluding reinforcement, for RCC Retaining Wall (footing and stem) complete as per Typical Drawing and MoRTH Specification: Section 1700(N) & 1500(N). [BSR Item No. 12.7.7]

Providing and fabricating steel reinforcement for R.C.C. works including cutting, bending, placing in position and binding complete, including cost of binding wire - HYSD/TMT bars (Fe-550) conforming to IS:1786. [MoRTH Specification: Clause 1000/1600]. [BSR Item No. 9.6.2] (PROVISIONAL quantity @ standard thumb-rule of reinforcement content; actual quantity as per detailed Bar Bending Schedule (BBS) to be prepared from the approved structural design/reinforcement drawing.)

Back filling behind abutment, wing wall and return wall (retaining wall treated at par), in 150mm layers, with mechanical compaction, complete with all lead and lift, as per drawing and technical specification - Gravelly material conforming to Appendix-6 of IRC:78-2014 (c=0, phi >= 30 deg, gamma >= 2.0 T/Cum). [MoRTH Specification: Clause 304]. [BSR Item No. 12.3.1]

Filter medium behind abutment, wing wall and return wall (retaining wall treated at par), complete as per drawing and technical specification - 600mm thick Filter Media/Geocomposite or equivalent. [MoRTH Specification: Clause 2504]. [BSR Item No. 12.4]

Providing A.C./PVC pipe Weep holes 100mm dia in Reinforced Concrete retaining wall, complete as per drawing and technical specification, spaced 1000mm c/c both horizontally and vertically, sloped 1 in 20. [MoRTH Specification: Clause 2205]. [BSR Item No. 13.13]