Repair of connecting road between runway and tarmac at AF Stn Chandigarh

Material and labour for preparing existing black top 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. complete all as specified and directed.

Material and labour for applying evenly a priming/tack coat with paving bitumen (VG-10 grade) @5Kg/10Sqm with mechanical sprayer on black top surfaces, complete all as specified and directed.

Material and labour for premixed bituminous macadam using paving bitumen (VG-30 grade) @ 4% by weight of total mix, laid, rolled and compacted with 8 to 10 ton power roller to required gradient & camber, consolidated thickness 75mm or less, complete all as specified and directed.

Material and labour for premixed semi dense asphaltic concrete 30mm thick consolidated thickness, 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 5.5% binder content by weight of total mix using VG-30 grade bitumen, laid with mechanical paver, rolled & compacted to a uniform smooth surface with 8 to 10 tonne road power roller, complete all as specified and directed. Notes:- (i) Thickness of semi dense asphaltic concrete and quantities of materials as mentioned in particular specification/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) Hot mix plant of adequate capacity shall be used for heating and mixing crushed stone coarse aggregate, fine aggregate and binder (bitumen). Semi dense asphaltic cooncrete shall be laid in single layer with self propelled mechanical paver ccomplete all as directed by the GE. (iii) Contractor's quoted rates shall be deemed to include all these aspects.

Material and labour for painting 2.0 mm thick road marking strip of thermoplast fluorescent paint of colour white or golden yellow or any other shade as approved by GE conforming to BS standards 3262 with 20% glass beads (inter mixed) applied hot with automatic (commercial) machine driven in strips after preparation of old/new surfaces as per manufacturer's instructionsmaking lines broken lines/dashes arrows etc on roads and other like surfaces exceeding 10cm but not exceeding 20cm in width or girth complete all as specified and directed.