RUNWAY REHABILITATION SCHEME AF STN DARBHANGA UNDER GE AF BIHTA

Earth work in excavation means over areas (n. exceeding 1.5m in depth, exc. 1.5 m in width as well as 10 Sq.m on plan) & including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5m, complete all as specified.

Supply only aggregates and boulders & staking at nearby area at runway as following size:-

Rolling and consolidating formation surface in cutting with 8 to 12 tonne power roller complete all as specified.

Construction of granular sub base 200mm thick (compacted) in single layer using crushed or broken stone aggregate, grading-I, rolled and consolidated to required gradient and camber as required complete all as directed.

Wet mixed macadam (WMM), 200 mm thick (compacted in two layers), with crushed stone aggregates of grading as per MORTH (with granite or basalt stone), spread, rolled with 8 to 12 tonne power roller and consolidated to required gradient and camber complete, all as specified.

Prepration of Wet mixed macadam (WMM) surfaces by brushing with wire brushes for removing caked mud etc., sweeping with brooms and finally fanning the cleaned surfaces with air compressor to remove all loose dust & dirt etc. including draining off water if any from pot holes and applying evenly a priming / tack coat with paving bitumen (VG-10) @ 10 kg per 10 Sqm with mechanical paver, complete all as specified.

Bituminous premix asphaltic dense concrete (DAC) 150mm consolidated thickness, laid in three layer (50mm each) using combined graded aggregate i.e. crushed stone coarse aggregate, fine aggregate (sand) & filler (inherent filler/OPC 43 grade) of physical properties as specified (refer SSR Part-I of 2009), pre-heated, mixed with 6 % binder content by weight of total mix using VG-30 bitumen, laid with mechanical paver, rolled & compacted to a uniform smooth surface with 8 to 12 tonne power road roller, complete all as specified. NOTES :- (i) Thickness of dense asphaltic concrete and quantities of materials as mentioned in particular specifications/SSR are the minimum. The quoted rate shall also be deemed to include for provision of more materials in comparison to those mentioned/specified in the item, if required, to achieve the required level, gradient, camber and shape all as directed by the GE. (ii) Any addition/deduction in the actual binder content used shall be priced @ Rs.75.30/kg.

Providing Hydraulic excavator(JCB) alongwith operator and one helper on hourly basis and including loading, unloading and transporting one place to another place, grading and levelling of shoulders, drainage and material handling inside MoD land , entire satisfaction of Engineer-in-Charge.

Providing Tractor withTrolley alongwith operator and one helper on hourly basis for unloading and transporting one place to another place, grading and levelling of shoulders, earth work and material handling inside MoD land , entire satisfaction of Engineer-in-Charge.

NOTES APPLICABLE FOR SERIAL ITEM No. 8 & 9 HERE- IN BEFORE:- i) Contractor (himself or through accredit agent) shall visit the site alongwith necessary machinary & manpower indicated in serial item 3 to 9 above well in advance daily to get directions from Engineer-in-Charge to carrying out work as per time schedule. ii) To accounting the period for payment a Log book shall be maintained at site indicating working hours with location, date & time and shall be signed by contractor, concerned JE and Engineer-in-Charge. Log Book complete in all respects shall be produced before GE while claiming every RAR/Final Bill. (iii) Rate included of the price of Diesel/Petrol/servicing. No claim what so ever shall be entertained on this account.