WB-HMC/NIT/ED/11/EE-II/26-27

Excavation in Soil by Manual Means Excavation for roadway in soil using manual means including loading in truck for carrying of cut earth to embankment site with all lifts and lead upto 1000 metres (Reference to MoRT&H's specification clause 301) [PWD N.HIGHWAY WING, w.e.f 2019-20, P-79, It-1]

Sand Filling in Foundation Trenches with good local sand free from earth not exceeding 150 mm compacted thickness including inundating each layer by profuse water and porking and rammimg layer by layer. Quality of sand is to be approved by the Engineer-in-charge.(Reference to MORT&H's specification 304) [PWD N.HIGHWAY WING, w.e.f 2019-20, P-182, It-3 (Analysis Rate)]

Concrete Block Pavement Supplying and Laying in the particular pattern of cement concrete block pavements with BIS certification and spacer nib of size and shape with aspect ratio as per IS 15658 with cement concrete grade not less than M40 on the prepared base course of specified CBR as mentioned in design and drawing with a cushion of bedding sand of 30 to 50 mm thick (grading of the bedding sand as per clause 6.5.1 of IRC SP-63) and filling up the gaps between two paver block with joint filling sand (the grading of the joint filling sand will be as per clause 6.5.2) complete as per IRC SP - 63 with proper confinement of bedding and joint filling sand, compaction,levelling and filling up of the edge gaps with mortar. Type I, II,III, IV should be as per design requeirment or instruction of E-I-C. Type - III (100 mm thickness) inter locking system. [PWD N.HIGHWAY WING, w.e.f 2019-20, P- 50, It-B3 of 2nd Addenda]

Plain/Reinforced cement concrete in sub-structure complete all including vibrating and compacting, finishing, curing, sampling, testing etc. by mechanically mixed as per drawing and Technical Specifications (Reference to MORT&H's specifications 1500, 1700 & 2200). 5B PCC Grade M20 [PWD N.HIGHWAY WING, w.e.f 2019-20, P-220, It-5b]

Brick masonry work with 1st class full size bricks except when necessary to complete the bond in cement morter 1:3 in foundation complete, including thoroughly soaking the bricks in a tank filled with water for a minimum period of one hour prior to being laid, protecting the green structure from rain by suitable covering and with a minimum Seven days curing etc., but excluding pointing and plastering, as per drawing and Technical Specifications.(Reference to MORT&H's specifications 1300 & 2200). Cement Mortar1:4 (1cement :4 sand) [PWD N.HIGHWAY WING, w.e.f 2019-20, P-183, I- 5]

Plastering with cement mortar (1:3) on brick work in sub-structure complete all including raking out joints curing, etc as per Technical Specifications (Reference to MORT&H's specifications 1300 & 2200) [PWD N.HIGHWAY WING, w.e.f 2019-20, P-219, I- 3]

By Mix in Place Method Construction of granular sub-base by providing graded materials such as natural sand/crushed gravel/crushed stone/combination depending upon the required grading , spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator and compacting with vibratory roller to achieve at least 98% of the maximum dry density for the material determined as per IS:2720 (Part 8), complete as per clause 401 desired density, complete as per clause 401 for grading-II Material [PWD N.HIGHWAY WING, w.e.f 2019-20, P-99, It-1B]

Add G.S.T 18%

Add 1% Welfare Cess