2/KM/Kalimpong Town

Demolishing stone rubble masonry manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge :

1:2:4 (1 Cement : 2 coarse sand (zone-III) derived from natural sources : 4 graded stone aggregate 40 mm nominal size derived from natural sources)

Centering and shuttering including strutting, propping etc. and removal of form forFoundations, footings, bases of columns, etc. for mass concrete

20 mm cement plaster of mix : 1:4 (1 cement: 4 fine sand)

Add Cost Idex @ 37 %

Excavation for Structures Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved material (Reference to MORT&H's specification 304).

Supplying and laying 150 mm to 200 mm boulder soling including rough dressing hand packing and ramming down small pieces and preparing the bed to proper level and filling up all joints with sandy clay or earth.

PLUM CONCRETE (1:3:6) Plain cement concrete of nominal mix (1:3:6 ) with coarse aggregate of which stone boulder of size 225 mm to 150mm of 60% of total dry volume to be placed in position as directed by Eng-in charge ,67% - 40 mm down single &33% - 20 mm down bazri , Coarse Sand ,Cement ( 53 grade ) mechanically mixed in 1:3:6 of rest volume and placed in position and compacted by any means as directed including cost of shuttering .

Back filling behind abutment, wing wall and return wall complete including spriklring water and throughly compacted with plate compactor/power rammer in layers not exceeding 150mm compacted thickness as per drawing and Technical Specification (710.1.4 of IRC:78 & MoRTH's specification 2200)

Providing weep holes in Brick masonry/Plain/ reinforced concrete abutment, wing wall/ return wall with 100 mm dia AC/PVC/HDPC pipe, extending through the full width of the structure with slope of 1V :20H towards drawing oce. Complete as per drawing and Technical Specifications (Reference to MORT&H's specifications 2706 & 2200).