Public Works Department Tender

Providing and laying bituminous macadam 50mm to 75mm thick with continuous type hot mix plant using crushed aggregates of specified grading premixed with bituminous binder VG-30 @ 3.4% carriage of mixed material to site of work, laid over a previously prepared surface with paver finisher mechanical to the required grade, level and alignment and roller to achieve the desired compaction complete as per technical clause 504 of MORT&H specifications. NOTES :- i.) The actual volume of the aggregate to be paid for shell be computed after deducting the specified percentage from the volume computed by stacks measurement as per MORT&H specifications (addendum to latest revision) for the purpose of secured advance. ii) The final grading for the aggregates required for bituminous macadam course Grading 2 for 75 mm/50 mm thickness of each layer conforming to table 500-7 of MORT & H specifications (addendum to latest revision) shall be determined after getting the bituminous macadam grading-2 designed from Punjab PWD, B&R Research Laboratory Patiala after obtaining 60 % of material. The design mix so finally approved shall be termed as the approved mix. The aggregates shall be hydrophobic and of low porosity. The aggregates shall satisfy the physical requirement set fourth in table 500-6 (addendum to latest revision). iii) The mix shall exhibit the following details (a) Binder expressed as percentage by weight of total mix. b) Course aggregate of 26.5 mm gauge expressed as percentage by weight of total mix. (c) Crushed bajri of 11.2 mm size expressed as percentage by weight of total mix. (d) Fine aggregate 4.75mm below expressed as percentage by weight of total mix (e) A single definite percentage passing each sieve for mixed aggregates. (f) Density of bituminous macadam (75mm/50mm thick after compaction) shall be minimum 2.2 gms/C.C & nothing extra shall be payable if higher density is achieved at site. IV) The contractor there after, shall be required to complete the supply of various ingradients or bituminous macadam as per proportions stipulated in the approved mix. V) Rate of B.M. shall be quoted by the contractor with respect to binder content percentage by weight of mix being 3.4% if Laboratory designs a mix with different percentage then the difference shall be payable/recoverable.

Providing, laying and compaction of open - graded premix surfacing of 20 mm thickness consisting of crushed stone aggregates of specified grading premixed in a continous type hot mix plant with bituminous binder VG-30 @ 1.46kg per sqm, carriage of mixed material to site of work laid with paver finisher mechanical and rolling with a smooth wheeled roller 8-10 tonne capacity, finished to required level and grades complete as per technical clause 510 of MORT&H specifications

Providing and laying premixed sand seal coat type-B premixed in continuous type hot mix plant using specified fine aggrigate and penetration grade bitumin VG-30 @ 0.68 kg per sqm carriage of mixed material to site of work, laid to the specified levels, grade and cross fall complete as per technical clause 511 of MORT&H specifications

Heritage and cultural Cess @ 1%