8476 REPAIRS TO DRAINAGE SYSTEM ND CERTAIN MISCELLANEOUS WORKS TO RUNWAY, TAXI TRACK AND DISPERSAL AREA AT RAMNAD UNDER GE TIRUNELVELI

Material and labour Racking out of old existing sealant compound and back up rod of the existing joints by special tools like cutting blades/machines. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil vegetation and other debris . Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before pouring the sealant Thereafter filled with closed cell medium density, cross linked polyethylene foam backup rod of 12 mm dia for complete length of the joint, over it to be filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of +/- 30% complete all as specified and as directed.

Material and labour Racking out of old existing sealant compound, back up rod and filler board of the existing joints by special tools like racker/cutting blades/machines. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the filler board and pouring the sealant Thereafter filled with pre-molded 25mm thick compressible polyethylene closed cell type filler board as specified , over it filled with closed cell medium density, cross linked polyethylene foam backup rod of 30mm dia for complete length of the joint. Finally filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor MAF of +/- 30% complete all as specified and as directed.

Material and labour for preparing and cleaning edges of concrete pavement joints, of any type and shape free from loose particles, grease, oil, demolding agents, cutting and chiselling the existing damaged portion of edges of joints to provide a regular prismatic cavity, repairs to pot holes, cracks as directed and cleaning by using blower etc., and washed with acid solutions if required and applying primer coat of epoxy (100 parts of epoxy resin with 50 part of epoxy hardener by weight proportion) and filling the cut portion with epoxy mortar, of make: hundsman (with 100 parts of epoxy resin, araldite with 50 parts of epoxy hardener, Aradur mixed with 800 parts of quartz sand by weight) including provision of temp wooden strips or metal strips as formwork to the edges of expansion/contraction/dummy joints and trowelling the mixture to level with the adjoining surface all as per manufacturer instruction complete all as specified and directed by Engr-In-Charge. Note: Kind attention of tenderer is invited to that the runway will be available to execute the work on Saturday and Sunday or on holiday or as required by the user. The tenderer has to work as per users requirement and unit rate quoted by the tenderer shall be deemed to include for this provision/condition.

Material and labour Painting Runway/Taxi track/ Apron marking with Mechanized runway/road marking Air spray Painting equipment with one coat to give uniform finish with IS164 road marking water base paint of superior make like Asian/Berger/Nerolac/ITS Coatings or equivalent (Paint spreading rate per liter should be 6.02 Sqm for one coat) as approved by the Engineer-in-charge including cleaning the surface of all dirt, scales, oil, grease and other foreign material etc and lining out complete. One coat on old work with white, black colours etc complete all as specified and as directed. Note: Painting to be carried out Twice as per user requirement.

Material and labour Painting of Taxi way, / Apron marking with Retro Reflective road marking paint of superior make of Apco track / Fast track WBR 3427 of Asian/Berger/Nerolac/ITS Coatings or equivalent paint with Air spray Painting equipment including the application of high index glass beads (TTB 1325 type III and having refractive index 1.9 of Potters make or equivalent. The painting shall be done for the existing Taxiway / Apron markings as per the recommended dimensions as per direction of Engineer-in-charge. The existing surface shall be cleaned thoroughly off dirt, dust, scales, oil grease etc. before application of the paint. The painting to be applied should have a single coat coverage of @0.50 litre per sqm for paint and 500 grams per sqm for glass beads with One coat on old/new work for White, Yellow, Red colors. Note:- i) Retro reflective paint shall be applied as per manufacturers instructions along with MORTH Technology and specialty complete. ii) Painting to be carried out Twice as per user requirement.

Demolition of Concrete in ground floors unreinforced and pavings n exc 15 cm thickness (below or above ground level) complete all as specified and directed.

Material and labour for 100mm thick cement concrete type B-2, ( 1:2:4) (40 mm graded aggregate) finished even and smooth without using extra cement complete all as specified and as directed.

Formwork with steel channel sections to edges of concrete flats, breaks in floors, openings in concrete walls, floors and roofs and sides of RCC/PCC bands in walls, horizontal or sloping, and similar work all exceeding 20cm wide. (Where RCC/PCC band in walls, spanning and opening complete all as specified and as directed.

Cutting of construction joints 25 mm deep and 10 mm wide by early entry saw cut using diamond bid cutter of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil , vegetation and other debris Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. Placing of closed cell medium density, crossed linked polyethylene foam backup rod of 12 mm dia, application of bond breaker tape on top of back up rod for complete width of the joint and filled with polyurethane based sealant complying with BS-5212, BS 4254 and EN- 141875- 2003 with minimum movement accommodation factor (MAF) of +I- 30% having minimum 10 year performance guarantee, applying masked tape on the edges of joints and removing the masking tape after filling of sealant as per the method specified by the manufacturer complete as specified and directed.

Material and labour for Cleaning of covered drains incl removal of silt, grass etc including depositing the same to distance n.exc 50 mtr along the runway. Note: The actual depth of silt deposited in the drain only be considered for measurement.