RIGBORE TUBE WELL

Labour for boring through any type of soil for sinking tube well of required dia. with top enlargement by rig boring system (either by reserve circulation or by direct rotary method) including hire charges and labour for rig machine, tools and plants, staging, force pumping set and making arrangement for water required for boring etc. complete and lowering of pipes, strainers, blind pipes etc. complete. (b) For depth upto 250 metre for 150 mm dia. Tube well with top enlargement of 250 mm dia.(upto 50 metre). (i) First 50 metre

(ii) Next 50 metre

Supplying, fibre glass reinforced Epoxy resin slotted of 1 mm slot width in 6.1m length of approved make and as per direction of the Engineer - in Charge (b) 150 mm nominal dia (ii) 7.00 mm wall thickness

(A) Sypply of E.R.W.M.S.(Electrical Resistant Welded M.S.) black pipe of of TATA make (heavy quality) as per standard specification, 5 mm thick. (ii) 150 mm dia. (internal)

Washing and developing tube well with air compressor pump and engine for 8 (eight) hours continuous pumping per day with necessary arrangements for testing the yield in gallons per hour with 'V' notch including hire and labour charges for all tools and plants and scaffolding as require

Labour for making arrangement for showing verticality test including the cost for hire charges of tools and plants, scafolding, labour etc. all complete.

Collecting sample of water for bacteriological and chemical test from any depth at any time during execution of work including hire and labour charges for tools and plants and sterilising the equipments, paying all charges and fees, testing etc. complete in all respect as per direction.

Packing the annular space between the outside of the tube well pipes & strainers and the bore with pea size washed gravel of approved quality having size from 2 mm to 5 mm or the size approved by the Engineer-incharge including cost of all materials labour and equipment complete.

Providing 200 mm centre guide. i) With Clamp

Supplying, fitting and fixing special hand pump no. 6 of approved make (for 50 mm or 40 mm dia. tube well).

Supplying, fitting and fixing 65 mm dia. deep well brass cylinder with necessary fittings and accessories.

Supply of G. I. pipes of TATA make including necessary sockets (d) 32 mm dia. (ii) Medium quality

Earth work in excavation of foundation trenches or drains, in all sorts of soil (including mixed soil but excluding laterite or sandstone) including removing, spreading or stacking the spoils within a lead of 75 m. as directed. The item includes necessary trimming the sides of trenches, levelling, dressing and ramming the bottom, bailing out water as required complete. (a) Depth of excavation not exceeding 1,500 mm.

Single Brick Flat Soling of picked jhama bricks including ramming and dressing bed to proper level and filling joints with local sand.

(I) Cement concrete with graded stone ballast (40 mm size excluding shuttering) In ground floor (B) With N.B. Variety stone metal. (a) 1:3:6 proportion

Neat cement punning about 1.5mm thick in wall, dado, window sill, floor etc. NOTE: Cement 0.152 cu.m per 100 sq.m.

Construction of circular soak well 2.5 metre deep in all types of sandy soils with dry brick work upto 1.6 metre from the bottom having 150 mm intermediate cement brick work (1:4) band all round and cement brick work (1:4) upto 0.90 metre from top with 20mm thick cement plastering (1:4) to inside face upto the depth of cement brick work, 15mm thick cement plaster (1:4) on outer face from top of the well upto G.L. and 6 mm thick cement plaster (1:4) on top of the R.C.C. cover slab including filling bottom 1.00 metre of inside of the well with brick metal (50 mm to 63 mm size) including R.C.C. cover slab of 100 mm thick with cement conc (1:1.5:3) with stone chips with necessary reinforcement and shuttering including one 560 mm dia. R.C.C. manhole cover (heavy type)of approved make supplied, fitted and fixed in the cover slab with necessary fittings, making nacessary arrangements for pipe connections, excavation of well including shoring, dewatering and removing the exess earth from the premises as per direction complete in all respect with all costs of labour and materials. With 250 mm thick dry brick work and 250 mm thick cement brick work (1:6) and 1.00m inside dia.

Display Board and Photography