REPAIR AND RESURFACING EXISTING TAXI TRACKS/LINKS/PTT AT 6 WG AIRFORCE STATION BARRACKPORE UNDER GE (AF) BARRACKPORE

Amount

M&L preparing surface of old blacktop surfaces 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 complete all as specified and as directed.

M&L applying evenly a priming tack coat with paving bituminous primer using paving bitumen VG-10 grade @ 5.0 Kg Per 10 Sqm over the priming surface /existing blacktop surface complete all as specified and as directed.

M&L laying premixed bituminous carpet 3 cm consolidated thickness with 0.405 cum of stone aggregate (all in stone aggregate) mixed with 21.9 kg of paving butumin per 10 sqm, rolled and compacted to required camber and gradient with 8 to 10 tonne power roller complete all as specified and directed NOTE:- (I) Using of mechanical paver at the time of laying of premix bituminous carpet. (ii) Premix carpet and Bituminous macadam shall be obtained from nearest hot mixed plant. Transportation of material at required temperature is the responsibility of contractor

M&L for Liquid seal coat by applying evenly binder at 9.8 Kg per 10 sqm binding with 6.3mm size stone chipping @ 0.09 cum per 10 sqm and rolled to uniform smooth surface with 8 to 10 tonne power roller complete all as specified and as directed.

M&L for Premix bituminous macadam laid & rolled, compacted using 8 to 10 tonne power roller to required gradient and camber (consolidated thickness 75 mm or less) using paving bitumen VG-30 grade as binder minimum 4% by weight of total mix by using mechanical paver including preparation before laying of macadam portion complete all as specified and as directed. Note : If the requirement of bitumen as per Design mix is more than 4 % the same shall be provided by the contractor at no extra cost to the Govt.

M& L repair to potholes any depth, not exceeding 1 Sqm each including sweeping free from dust and mud, or water, scoring sunken surfaces in roads paths etc cutting around edges to at least 25mm in depth making good by applying tack coat with bituminious primer @ 5 kg per 10 sqm putting in premix as specified for thin bituminious carpet (2 cm thick) well rammed and seal with premixed liquid seal coat evenly binder at 6.8 Kg per 10 sqm binding with 6.3mm size stone chipping @ 0.06 cum per 10 sqm paving bitumen, applied and rolled to uniform smooth surface complete all as specified and as directed.

M&L for preparation of black bituminous surfaces of road as required/directed and applying thermoplastic road marking paint with an applicator machine, the material shall be laid uniformly, heated mixer with a starting mechanism at a temperature of 160 degree centigrade. The thickness of paint shall not less than 2mm and not more than 2.5mm, the width pattern all as directed at site , glass bead shall be applied uniformly as directed. The paint shall be BS 3262 Part I&II of 1989 complete all as specified and as directed.

BARRACKPORE ENTERPRISE