REPAIRS TO CERTAIN ROADS IN TECHNICAL AND DOMESTIC AREA OF AGE BR -II UNDER GE I RND RCI, HYDERABAD

Repair to isolated potholes, depth of potholes exceeding 30mm and not exceeding 1.5 sqm each including sweeping free from dust and mud, or water, scoring sunken surfaces in roads, paths, etc., cutting edges to at least 25mm in depth, making good by applying tack coat of VG-10 @ 5Kg per 10Sqm, putting in premixed bituminous macadam, well rammed and sealed with binder 9.8Kg per 10Sqm, blinded with 0.09Cum of stone chippings, 6.3mm size and again well rammed (including supply of premixed macadam, binder and chippings) complete all as specified and as directed.

M&L, Premix bituminous macadam laid rolled and compacted (Consolidated thickness 75mm or less) with binder content at 4% by weight of total mix using Paving bitumen VG-30 as binder, by hot mix process and laid by mechanical paver, rolled and compacted to gradient and camber required using power roller of capacity exceeding 8 ton and not exceeding 12tonne complete all as specified and directed. Note:- (a) DBM shall be as per MORTH specifications including minimum binder content mentioned therein and as detailed in particular specifications. (b) Supply and mixing of hydrated lime or cement or both in case TSR is less than 80% is deemed to be included in the rate quoted.

M&L, Preparing existing black top surfaces of bituminous roads by brushing with wire brushes for removing caked mud etc., sweeping with brooms and finally cleaning the surface with air compressor to remove all loose dirt etc., and complete all as specified and directed.

M&L, applying evenly a priming/tack coat with paving bitumen VG-10 @ 5Kg/10Sqm over black top surfaces complete all as specified and directed.

M&L, Premixed Bituminous Semi Dense Asphaltic Concrete, 30mm consolidated thickness with 5.5% binder with binder content by weight of total mix, using paving bitumen of Grade VG-30 as binder by hot mix process and laying with mechanical paver, rolled and compacted to required camber or gradient using power roller of capacity exceeding 8 tonne and not exceeding 12 tonne 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 stone and fine aggregate and binder (bitumen) and 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.

Cleaning the bituminous road surfaces by removing all dirt, scales of oil, grease and foreign material etc., and applying 2.5mm thick hot thermoplastic road marking paint by fully automatic thermoplastic paint applicator machine for marking of center line, lane divider line and zebra crossing line etc., machine shall be fitted with profile shoe, glass beads dispenser, propane tank heaters and profile shoe heater and driven by experienced operator on road surface complete all as specified and directed. Note: Quoted rate shall deemed to include cost of all material, labour, machinery etc., required for proper completion of work. Properties of thermoplastic materials shall conform to section 803.4.2 of Ministry of Road Transport and Highways.

M&L, 100mm thick (spread thickness) filled with moorum/red bajri as in road side berms, spread, rolled and compacted to required camber and gradient using power roller of capacity exceeding 8 tonne and not exceeding 10 tonne complete all as specified and directed. Note for item No 1 to 6: Works under Sl item No 1 to 6 are required to be carried out at locations as directed by Engineer in Charge. Contractor's quoted rate shall be deemed to include for the same and No claim whatsoever will be entertained at a later stage.

Manufacturing, supplying and fixing retro reflective Cautionary /warning sign boards of equilateral triangular shape having each side of 900 mm with support length of 3650 mm made up of 2 mm thick aluminium sheet, face to be fully covered with high intensity encapsulated type heat activated retro reflective sheeting conforming to type - IV of ASTM-D 4956-01 in blue and silver white or other colour combination including subject matter, message (bilingual), symbols and borders etc. as per IRC ; 67:2001, pasted on substrate by an adhesive backing which shall be activated by applying heat and pressure conforming to class -2 of ASTM-D-4956-01 and fixing the same with suitable sized aluminium alloy rivets @ 20 cm c/c to back support frame of M.S. angle iron of size 25x25x3 mm along with theft resistant measures, mounted and fixed with 2 Nos. M.S. angles of size 35x35x5 mm to a vertical post made up to M.S. Tee section ISMT 50x50x6 mm welded with base plate of size 100x100x5 mm at the bottom end and including making holes in pipes, angles flats, providing & fixing M.S. message plate of required size, steel work to be painted with two or more coats of synthetic enamel paint of required shade and of approved brand & manufacture over priming coat of zinc chromate yellow primer (vertical MS-Tee support to be painted in black and white colours).Backside of aluminium sheet to be painted with two or more coats of epoxy paint over and including appropriate priming coat including all leads and lifts etc. complete as per drawing , specification and direction of Engineer-in-charge.

Demolition of stone slab and tiles of any description or thickness set in cement mortar in floors , aprons ,path etc complete all as specified and directed.

M&L for hardcore of broken stone boulders of gauge 63mm ,deposited ,spread,and levelled in layers n exc 15cm in thickness watered and rammed complete all as directed.