Bridge safety-Handrail Maintenanance of Bridges under Bridges section Thalassery

12.8.1.C.1:Plain/Reinforced Cement Concrete in Open Foundation complete as per Drawing and Technical Specifications RCC Grade M20 - Using Concrete Mixer

2.4.2.A:Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 metres Cement Concrete Grade M-15 & M-20 - By Mechanical Means

14.6:Construction of precast RCC railing of M30 Grade, aggregate size not exceeding 12 mm, true to line and grade, tolerance of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequate space between vertical post for expansion, complete as per approved drawings and technical specifications.

14.1D.1.1.A:"Furnishing and Placing RCC/PSC Grade M35 Using Concrete Mixer as per drawing and Technical Specification. For solid slab super-structure - Height upto 5m

12.40:Supply, Fitting and Placing un- coated HYSD bar Reinforcement in Foundation complete as per Drawing and Technical Specifications

55.26a:Providing and applying elastic, elastomeric membrane forming system with anticarbonation and breathing properties. The system should be based on solvent free acrylic polymers with selected mineral fillers and should be ultra-violet resistant, crack bridging type, carbonation resistant, breathable, enviornment friendly, water proofing coating. For anticarbonation, equivalent air layer thickness denoted as R or SD CO2 grater than 50 m and for breathability equivalent air layer thickness denoted as SD H2O shall be less than 4 m for vapour transmitting barrier. The system consists of one coat primer @ 75- 100 g/m2. The consumption of main polymer coating to give film thickness of 200-225 microns (Solid contents- 70%+ -3%) should be approximately. 400-450 g/m2 per two coats depending upon the method of application (either by roller or brush) and surface smoothness of the concrete. The total dry film thickness of the coating system should be minimum 200 microns for the above system. Polymer coating should be in suitable approved shades, including cost of materials, cleaning, chipping and removing the dirt particles of the concrete slab with wire brush and water,labour charges for filling the bug holes, cracks, joints etc with one component polymer modified fine repair and cosmetic mortar, labour for applying the above coating, scaffolding charges,etc. complete as per IRC SP:80 Clause 6.5.1 and Clause 2808 in the Specifications Book for Roads & Bridges published by the Ministry during April 2013.

12.1.B.1:Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved material. Ordinary Soil - Depth upto 3m - Mechanical Means

12.4:Plain cement concrete 1:3:6 nominal mix in foundation with crushed stone aggregate 40 mm nominal size mechanically mixed, placed in foundation and compacted by vibration including curing for 14 days.

55.15:Refurbishment of existing signboardsRefurbishment of existing signboards of all size except gantry mounted ones to their original reflectivity & position by removing obstructions like overgrowth vegitation etc ,if any,washing the signboards with water & soap solution to remove all dirt, oil etc. , correcting any dislocations including minor repairs, replacement of lost nut and bolts etc complete.