PROVISION OF RETAINING STRUCTURES AND SLOPE STABILIZATION MEASURES AT RANGAPAHAR UNDER GE 868 EWS

Amount

Material, labor and installation of Cruciform shaped horizontal consolidation units of size 3.1 m (height) X 3.6 m (width) made out of HE 120B/E275 grade as defined in IS 2062 steel beams (min.) connected to single anchor by universal ball joint having the min. breaking load of 300 KN and having 8 No's of steel wire ropes connected to front beams and tubular tie and having front facing rhomboidal steel wire rope panel made out of 8 mm diameter mesh of size 300 mm x 300 mm with steel wire knot connection at joint Zn+Al5% class A coated of min. wire rope grade 1770 MPa and nominal punching resistance not less than 250 KN when tested in accordance with ISO 17746 and mechanically woven double twisted hexagonal shaped Zn+Al5% class A coated wire mesh panel with mesh wire tensile strength 380-550 Mpa when tested with IS 16014:2018 attached to the cruciform frame as per technical specification complete all as directed.

Supplying and laying non woven geotextile filter media behind Reinforced concrete wall and wrapped around PVC pipe, as per MORTH 700 TYPE III geoltextile made of poly propylene or similar fiber manufactured through machine made process of heat bending or needle punching technique and tensile strength 7 KN/M, weight not less than 150 gm/sqm as per manufaturer specification, the width of roll geotextile roll shall not be less than 4.5m; complete all as specified and directed.

Supply and Installation of a three dimensional erosion control mat made of polymeric reinforcement with a polymeric protective coating having a longitudinal tensile strength of min 20 KN/m and a nominal thickness of more than 13 mm including fixing of U pins of 8 mm diameter of depth 500 mm at 1 m c/c spacing, top support rope, bottom support rope, thimbles, U-clamps, etc at the easily accessible location including top and bottom, with all leads and lifts, manpower and machinery, materials, labour complete all as directed.

Providing and fixing self-drilling anchors of min. 32 mm diameter on cut slope with yield load > 280 KN with attached sacrificial drill bit, nut, washer plate, coupler for connecting bars with suitable corrosion protection coating for bar and accessories and full length grouting including all ancillary works for soil nailing/surface anchoring including all ancillary material, machinery, Labour as per detailed technical specifications complete all as directed.

Material, labor and installation of subsurface drainage pipes (horizontal / inclined) in the slope with perforated PVC pipe (lined with Non -woven Geotextile) of 50 mm internal diameter by drilling and inserting the perforated PVC pipe as per the drawings complete all as specified and directed.

Earthwork in excavation for foundation of structures as per drawing and technical specification including setting out, removing, spreading or stacking of spoils within a lead of 500 m as directed and trimming the sides of the trenches, levelling, dressing and ramming the bottom in all sorts of soil excluding marshy soil & rocks by mechanical means complete (Reference MoRT&H's specification clause 304) complete all asspecified and directed. NOTE: Earthwork required for execution of BOQ sr item No. 1,3,4 and 5 above, shall only be measured and paid under this item.

Removal of vegetation, bushes, shrubs in lower and upper section including stacking of useful material, disposing of material from hill slope within lead of 50 meter complete all as directed.

Rough excavation not exc 1.5 m deep and getting out in soft and loose soil complete all as specified and directed.

Excavation over area n exc 1.5 m deep and getting out in soft/loose soil complete all as specified and directed.

Excavation over area exc 1.5 m deep and n.exc 3 m deep and getting out in soft/loose soil complete all as specified and directed.

Excavation over area exc 3.00 m deep and n.exc 4.50 m deep and getting out in soft/loose soil complete all as specified and directed.

Excavation in trenches n exc 1.5 m wide n exc 1.5 m depth; for foundation or for shafts, wells, cesspits, manholes, pier holes n exc 10 Sqm on plan and n exc 1.5 m in depth and getting out in soft/loose soil complete all as specified and directed.

Excavation in trenches not exceeding 1.5 m wide for foundation or for shafts, wells, cesspits, manholes, pier holes etc. not exc 10 sqm on plan and exceeding 1.50 in depth but not exc 3.0 m and getting out soft/loose soil complete all as specified and directed

M&L for PCC (1:3:6) type C2 using 40 mm graded crushed stone aggregate as in drain foundation, filling and mass concrete complete all as specified and directed.

M&L for brick work with sub class 'B' bricks straight or curved on plan exc 6 m mean radius built in CM (1:4) as in wall of drain complete all as specified and directed.

M&L for PCC (1:2:4) type B-0 using 12.5 mm graded crushed stone aggregate as in lintels upto 1.5 m clear span, cills, steps, seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, coping, kneelers, apex stones, bed plates, kerbs, water trough and the like including weathering slightly rounded or chamfered angles and throating complete all as specified and directed.

M&L for rendering 10 mm thick on fair face of brick wall in CM (1:4) finished even and smooth without using extra cement complete all as specified and directed.

M&L for PCC (1:2:4) type B-1, using 20 mm graded crushed stone aggregate as in surface channels and drains complete all as specified and directed.

Returning filling in, including spreading, levelling, watering and ramming in layers not exc 25 cm in soft/loose soil complete all as specified and directed.

Removing excavated material n exc 50 m and depositing where directed at a leve n exc 1.5 m above the starting poin complete all as specified and directed.

M&L for extra for forming fair finished drain or channel 30 cm inner girth using extra cement including forms, moulds, mitered /stopped ends complete all as specified and directed.

Formwork to sides of concrete foundations, footings, bases of columns, raft and raft beams, sides and soffits (if any) of foundation and plinth beams; and similar work; vertical or to batter for rough finished concrete surfaces complete all as specified and as directed.

Formwork to faces of walls, retaining walls, abutments, parapets and staircase railings and similar work including attached pillasters, buttresses, etc.; vertical or to batter for fair finished concrete surfaces complete all as specified and directed.

M&L for mild steel TMT bars (Fe 500D grades) 10 mm dia and over, cut to length, bent to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9 mm dia complete all as specified and directed.

M&L for Reinforced Cement Concrete M-30 (Design mix) using 20 mm graded crushed stone aggregate as in foundations, including rafts, footings, foundation beams; plinth beams; bases for columns, basement slabs, under-reamed piles and mass concrete complete all as specified and directed.

M&L for Reinforced Cement Concrete M-30 (Design mix) using 20 mm graded crushed stone aggregate as in walls, retaining walls, basement walls, ballast walls above top of footings including attached pilasters & buttresses complete all as specified and directed.

Supply only PVC pipe, 100 mm bore ISI marked for weep hole of RCC Retaining wall complete all as specified and as directed.

M&L for Hand packing (any thickness) at back of walls over arches etc and raising (or lowering) to the required level with broken bolders complete all as specified and directed.

S&F 3 mm dia galvanized steel wire netting with 50 mm aperture fixed with tinned tacks of wire staples complete all as directed.

Pavai Infra Geotech (BID ID -3197400)