SPECIAL REPAIRS TO PERIMETER AND INTERNAL ROADS AT NABAGRAM MILITARY STATION

Scarifying or picking gravelled, macadam or bituminous macadam surfaces in area not exceeding 400 sqm, depth exceeding 50mm and not. exc 100mm deep (Scarifying include racking over and grading the broken up surface to the proper camber etc. as required) , complete all as specified and directed.

M&L total 7.5cm thick (compacted thickness) Water Bound Macadum (WBM), with coarse aggregates of lime stone, Sand stone, Flint or Quartzite grading 2 (63 to 40mm size) or grading 3 (50 to 20mm size) spread, rolled and consolidated to gradient and camber with 8 to 10 tonne power roller required, complete all as specified and directed. [Note : (i) The finished surface tolerances to be as per Table 900-1 of MoRTH specifications for Road and Bridge Works 2013.(ii) Stack measurement of WBM materials brought at site shall be entered in MB as "Not to be abstracted" before payment.(iii) Approved certificate of mixing properties & proportion of qty of WBM materials shall be obtained from AGE(I) before execution of work. Payment shall be made only after adherence to the same alongwith submission of road roller register/ log book.(iv) Unit rate quoted by bidder shall inclusive testing charges as above & as per MoRTH & no extra claim against testing charges shall be entertained later on.]

Preparation of unsurfaced Water Bound Macadam (WBM)/ Wet Mix Macadam (WMM) surfaces by brushing with wire brushes for removing caked mud, sweeping with brooms and finally fanning the cleaned surface with gunny bags to remove all loose dust or dirt etc. & M&L & applying evenly a prime coat of Cationic Bitumen emulsion SS-1 conforming to IS : 8887 at a rate of application of 0.7 - 1.0 kg/sqm on surface of WMM/WBM as specified in Table 500-3 of MoRTH specification for Road and Bridge Works 2013, using mechanical sprayer after cleaning of existing surface, complete all as specified and directed.

Repairs to pot holes any depth, not exceeding 1 sqm each including sweeping free from dust, mud or water scouring sunken surfaces in roads, paths etc. cutting around edges to atleast 25 mm in depth making good by applying tack coat @ 3 Kg per 10 sqm using VG-10 Bitumin, putting in premixed bituminous macadam, well rammed and sealed with binder of bitumen grade (VG-30) @ 9.8 Kg per 10 Sqm, blended with 0.09 cum of stone chippings, 6.3 mm size and again well rammed, rolled and compacted to required camber and gradient to uniform smooth surfaces by mechanical paver and using with 8-12 tonne power roller (including supply of premixed macadam, binder and chippings) for depth of potholes exc 30 mm, complete all as specified and directed.

Preparation of unsurfaced bituminus surface by brushing with wire brushes for removing caked mud etc., sweeping with brooms and finally fanning the cleaned surface with gunny bags to remove all loose dirt etc. and M&L and applying evenly a tack coat of rapid setting cationic bitumen emulsion RS-1 conforming to IS : 8887 at a rate of application of 0.2-0.3 kg/sqm on bituminous surface as specified in Table 500-5 of MoRTH Specification for Road and Bridge Works 2013, using mechanical sprayer after cleaning of existing surface, complete with mechanical sprayer, complete all as specified and directed.

M&L premixed bituminous macadam over primed surface of road using paving bitumen VG-30 & temperature as per table 500-1 & 500-2 of MoRTH & as per IS : 73, laid/rolled by 8 to 10 tonne capacity roller and compacted to required gradient and camber (consolidated thickness 75 mm or less) including preparation of area before laying of Macadam with mechanical paver, binder contents of premixed macadam shall be 4% by weight of total mix (Design Mix), complete all as specified and directed. [Note : (i) Work shall be executed after approval of design mix of bituminous macadam by AGE(I). (ii) Calibration of Hot Mix Plant shall be submitted to Engr-in-Charge for approval. (iii) Payment shall be made to Contractor after submission of approved design mix, bitumen extraction report, Road Roller register & calibration report. (iv) Exact qty of binder to be used shall be ascertained by Design Mix. (v) Minimum 4% binder shall be used. However, in case more than 4% of binder content is required as per design mix, the same shall be provided by the contractor at no extra cost to dept (vi) Course aggregate's physical property as per MoRTH table 500-6 & mixing of all aggregates as per table 500-7 of MoRTH. (vii) Unit rate quoted by bidder shall inclusive testing charges as above & as per MoRTH & no extra claim against testing charges shall be entertained later on.]

M&L Bituminous premix semi dense asphaltic concrete( SDAC), 30mm (average) consolidated thickness with minimum 5.5% binder with paving bitumen (VG-30) [Mix Design criteria as per SSR Part-I Clause 20.B.2.11, or as per MoRTH by Marshal method (Ref table 500-12 to 500-16)] coarse aggregate, fine aggregate, filler cement (OPC - 43 Gde) as per recommendation of design by weight of total mix from hot mix plant, rolled by with 8 to 12 tonne vibrating (tandom) road roller to confirm uniform surface and compacted to required camber and gradient, complete all as specified and directed. [Note : (i) Work shall be executed after approval of design mix of semi dense asphaltic concrete by AGE(I). (ii) Calibration of Hot Mix Plant shall be submitted to Engr-in-Charge for approval. (iii) Payment shall be made to Contractor after submission of approved design mix, Bitumen Extraction Report, Road Roller Register & Calibration Report. (iv) Exact qty of binder to be used shall be ascertained by Design Mix. (v) Minimum 5.5% binder shall be used. However, in case more than 5.5% of binder content is required as per design mix, the same shall be provided by the contractor at no extra cost to dept. (vi) All testing charges shall include in unit rate quoted by bidder.]

M&L Bituminous premix semi dense asphaltic concrete( SDAC), 40mm (average) consolidated thickness with minimum 5.5% binder with paving bitumen (VG-30) [Mix Design criteria as per SSR Part-I Clause 20.B.2.11, or as per MoRTH by Marshal method (Ref table 500-12 to 500-16)] coarse aggregate, fine aggregate, filler cement (OPC - 43 Gde) as per recommendation of design by weight of total mix from hot mix plant, rolled by with 8 to 12 tonne vibrating (tandom) road roller to confirm uniform surface and compacted to required camber and gradient, complete all as specified and directed. [Note : (i) Work shall be executed after approval of design mix of semi dense asphaltic concrete by AGE(I). (ii) Calibration of Hot Mix Plant shall be submitted to Engr-in-Charge for approval. (iii) Payment shall be made to Contractor after submission of approved design mix, Bitumen Extraction Report, Road Roller Register & Calibration Report. (iv) Exact qty of binder to be used shall be ascertained by Design Mix. (v) Minimum 5.5% binder shall be used. However, in case more than 5.5% of binder content is required as per design mix, the same shall be provided by the contractor at no extra cost to dept. (vi) All testing charges shall include in unit rate quoted by bidder.]

S&F in repairs metal retro-reflective Tubular Delineator made out of ABS round body fitted with 2 Nos 65 mm dia highly reflective reflectors made out of PMMA and mounted on 45/50 mm dia mild steel pipe/ post of 600 mm height above ground duly powder coated (minimum 40 micron) and thermo plastic elastomer 3 bands of green, red and yellow reflector radium tape of 25 mm wide strips with anti theft steel net for reflector protection including supply and providing of embedding in PCC 1:2:4 (150 x 150 x 300mm) type B1, complete all as specified and directed.[Note : Delineators shall be made from Class-C full cube corner, micro-prismetic, non metallic, retro-reflective sheets, should meet the reflective value requirement of type XI sheeting specifications as per IRC-67 & meeting the Co-efficient of retro-reflection values as per ASTMD 4956 table specification.]

S&F in repairs Cat Eyes aluminium alloy body pavement marker two way reflective of minimum size (100 to 110mm) x (100 to 130)mm x (24 to 30)mm with aluminium alloy body with micro prismatic lens type technology with reflective lens to be fixed epoxy resin adhesive after cleaning the surface and reflective panels Amber/Red/White the help adhesive and screws, complete all as specified and directed.