SPECIAL REPAIRS TO ROADS AT AIR FORCE STATION ADAMPUR

Amount

Scarifying or picking gravelled macadam or bituminous macadam surfaces exceeding 50mm but not exceeding 100mm deep , area not exc 400 Sqm complete all as specified and directed. Note: Rate quoted by contractor shall be deemed to include for removal of rubble/debris outside MoD land.

Material and labour for water bound macadam (WBM), 75 mm thick (compacted thickness), with crushed stone aggregates of grading 2 ( 63 to 40 mm size) (sand stones or quartzite), spread, rolled with 8 to 12 tonne power roller and consolidated to required gradient and camber complete, all as specified.

All as per serial item No 2 here-in-before but except material, complete all as specified and directed. Note : (i) Old serviceable material obtained from Serial item No 01 here-in-before shall be reused. (ii) The cost of sorting out/ cleaning the material for re-use, shall be deemed to be included in the unit rate quoted by the tenderer.

Material and labour for preparing unsurfaced water bound macadem 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 grade) @ 10Kg per 10 Sqm with mechanical sprayer complete all as specified and directed.

Material and labour for preparing 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. including draining off water if any from pot holes and 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 using 12 to 25mm graded crushed preheated stone aggregate, laid, rolled and compacted with 8 to 10 tonne 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 40mm 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 power road roller, complete all as specified and directed. Notes:- (i) Thickness of semi 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) 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 concrete shall be laid in single layer with self propelled mechanical paver all as directed by the GE. (iii) Contractor’s quoted rates shall be deemed to include all these aspects.

Material and labour for repair to pot holes, depth exceeding 30mm and area not exceeding 1.0 Sqm each, including sweeping free from dust and mud or water, scoring sunken surfaces of road, cutting around edges to at least 25mm in depth, making good by applying paving bitumen (VG-10) @ 5kg per ten sqm, putting in premixed bituminous macadum, well rammed and sealed with binder 6.8Kg/10 Sqm blinded with 0.06 Cum of stone chipping 6.3mm size and again well rammed / rolled to uniform smooth surface, complete all as specified and directed.

Surface dressing not exceeding 15cm deep in loose/soft soil, complete all as specified and directed.

Material and labour for painting 2mm thick with thermoplast fluorescent paint of colour white or golden yellow or any other shade conforming to BS standard 3262 with 20% glass beads (inter mixed) applied hot with automatic (commercial) machine drive in strips after preparation of surfaces as per manufacturer’s instructions & according to the specifications laid down by IRC & MOST (Ministry Of Surface Transport)- Specifications 2001 (4th revision), making lines, broken lines/dashes, arrows etc. on roads and other like surfaces exceeding 10cm but not exceeding 30cm in width or girth, complete all as specified and directed.

Note: The Total amount shall subject to adjustment of credit of Rs. 12000.00 for old Materials as per Schedule of Credit

J K AND COMPANY

ELECTRA ENGINEERS