GENERAL-BRIDGE SAFETY 2025-2026 Maintenance of various bridges ( newly added in Asset ) under bridges section chavakkad General Civil Work

2.3.2.A:Clearing and grubbing road land including uprooting rank vegetation, grass, bushes, shrubs, saplings and trees girth up to 300 mm, removal of stumps of trees cut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned, up to a lead of 1000 metres including removal and disposal of top organic soil not exceeding 150 mm in thickness In area of light jungle - By Mechanical Means

OD50020/2025-2026:Engaging man Mazdoor for removing vegetation and accumulated earth, clearing spouts etc complete

2.4.2.B: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 Prestressed / reinforced cement concrete grade M-20 & above - By Mechanical Means

14.1.A.1:Furnishing and Placing Reinforced Cement Concrete Grade M20 Using Concrete Mixer in super-structure as per drawing and Technical Specification

14.2:Supplying, fitting and placing HYSD bar reinforcement in super-structure complete as per drawing and technical specifications

14.7:Construction of RCC railing of M30 Grade in-situ with 20 mm nominal size aggregate, true to line and grade, tolerance of vertical RCC post not to exceed 1 in 500, center to center 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.

OD50021/2025-2026:Encasing the deteriorated surface with micro concrete so as to get a uniform size. Applying Epoxy based, two component special chemical structural bonding agent on the thoroughly cleaned existing concrete surface so as to get a well bonding with the new surface. Water dispersed acrylic copolymer based curing compound should apply as soon as possible after final troweling when surface water has disappeared (approximately ½–2 hours depending on ambient conditions) or for vertical surfaces, apply immediately after removal of form work. The rate include the cost of material, labour charges & hire charges of Generator all complete as per manufactures specification and as per the instruction of engineer in charge.

16.11:Eproxy bonding of new concrete to old concrete

55.10.1:Providing and erecting retro-reflectorised Object Hazard Marker 300mm x 900mm Providing and erecting retro-reflectorised Object Hazard Marker sign with 07 years warranty, manufactured as per IRC 67 USING Type IV ASTM D 4956-09 micro prismatic retro reflective sheeting fixed over aluminium sheetig, 2 mm thick / aluminium composit material sheeting 4 mm thick with suitable back support frame and supported on a mild steel angle iron post 75mmx75mmx6mm, firmly fixed 30cm above ground level by means of properly designed foundation with M 15 grade cement concrete 30cmx30x45cm, 45cm below ground level including painting all non-reflective faces with epoxy paint 2 coats over epoxy primer as per approved drawing and clause 801.300 mm x 900 mm