Public Works Department Tender

Providing and laying patch work with bituminous macadam 50mm to 75mm thick using crushed stone aggregates of specified grading premixed with bituminous binder VG-30 @ 3.4% in Continuous type hot mix plant, carriage of mixed material to site of work, laid after trimming the pot hole, removal of failed material, laying by suitable means and rolling with a smooth wheeled roller to match the adjoining surface complete as per technical clause 504 of MORT&H specifications I. The actual volume of the aggregate to be paid for shall 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 bitumenious macadam course Grading 2 for 75 mm / 50 mm thickness of each layer conforming to table 500-7 of M.O.R.T. & H specifications (addendum to latest rivision) shall be determined after getting the bitumenious macadam grading-2 designed from Punjab PWD, B&R Research Laboratory Patiala after obtaining 60 % of material. The design mix so finally approved by 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 a percentage by weight of total mix. b) Coarse 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 aggregates 4.75 mm below expressed as percentage by weight of total mix. e) A single definite percentage passing each sieve for mixed aggregates. f) Density of Bitumensious macadam (75 mm/ 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 thereafter, 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.

roviding and laying bituminous concrete 30mm to 45mm thick with Continuous type hot mix plant using crushed aggregates of specified grading, premixed with bituminous binder VG-30 @ 5.4%, laying with a Paver Finisher Mechanical to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction complete as per technical clause 507 of MORT&H specifications NOTES : - (i) Job mix formula for the Bituminous Concrete shall be provided by the agency and shall be got approved from Punjab PWD, B&R Research laboratory Patiala before adoption at site for execution. (ii) The specification of this item for analytic purpose is kept with bitumen content @ 5.4% weight of mix variation as compared with job mix formula shall be paid / deducted accordingly. The limits of variation shall be worked out with the approved formula. TECHNICAL NOTE : - i.) Apart from the confirmity with the grading and quantity requirement of invidual ingredients exhibited above the mix aggregate i.e. coarse and fine aggregate for bituminous concrete shall meet all requirements set forth clause 507 of MORT&H specifications. ii) The final grading for the aggregates required for bituminous concrete confirming to table 500.17 of MORT&H specifications shall be determined after getting the bituminous concrete designed from Punjab PWD, B&R Research Laboratory, Patiala after obtaining 60% of the material. The design mix so finally approved shall be termed as approved mix. The aggregates shall be hydrophobic and of low porosity. The aggregates shall satisfy the physical requirement set forth in table 500-6 (addendum to latest revision). iii) The approved mix shall exhibit the following details, source and location of all material: - (a) Binder expressed as percentage by weight of total mix. (b) Course expressed as percentage by weight of total mix. (c) Crushed bajri expressed as percentage by weight of total mix. (d) Fine aggregate expressed as percentage by weight of total mix. (e) A single definite percentage passing each sieve for mixed aggregates. (f) Density of bituminous concrete after compaction will be not less than 2.35 gm/CC.

Videography/Photography of Road before start of work, during execution and after completion as per direction of Engineer in Charge.

Heritage and Culture Cess @ 1%