COMPREHENSIVE REPAIRS TO CERTAIN AIR FIELD DRAINS, HARDSTANDINGS, PQC OF DISPERSAL AREA AND CONNECTING TAXIWAYS INLCUDING CONNECTED JOINTS, PATHWAYS ETC AT INS UTKROSH UNDER GE MINNIEBAY, SRI VIJAYA PURAM

M & L for Racking out existing Bituminous Sealant from Expansion Joints to a depth of at least 30mm, cleaning edges up to a depth of at least 15 mm by scrapping / grinding by mechanical means to expose the concrete surfaces, cleaning the joint, removing the sticky, foreign and loose particles, Placing PVC Foam Baker Bar of 25 mm dia, inserting the same to keep a clear depth of 10 mm from top of pavement, applying epoxy based primer compound to the sides of joint from Baker Bar to the top of pavement, applying polyurethane sealant mixed thoroughly by stirring with Palette Knife and applying the same to the joint to a depth of 10 mm up to the top of pavement in Expansion Joints of 20 mm width complete all as per manufacturer's instructions and as directed. Make: M/s. Fosroc Chemicals / M/s. Sika India Pvt. Ltd. / M/s. STP Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Maruti Bitumen Pvt. Ltd.

M & L for Racking out existing Bituminous Sealant from Construction / Dummy Joints to a depth of at least 20mm, cleaning edges up to a depth of at least 15 mm by scrapping / grinding by mechanical means to expose the concrete surfaces, cleaning the joint, removing the sticky, foreign and loose particles, Placing PVC Foam Baker Bar of 10-15 mm dia, inserting the same to keep a clear depth of 10 mm from top of pavement, applying epoxy based primer compound to the sides of joint from Baker Bar to the top of pavement, applying polyurethane sealant mixed thoroughly by stirring with Palette Knife and applying the same to the joint to a depth of 10 mm up to the top of pavement in Construction / Dummy Joints of 10-12 mm width complete all as per manufacturer's instructions and as directed. Make: M/s. Fosroc Chemicals / M/s. Sika India Pvt. Ltd. / M/s. STP Ltd. / M/s. Choksey Chemicals Pvt. Ltd. / M/s Bostik India Pvt. Ltd. / M/s. Thermax Ltd. / M/s. Maruti Bitumen Pvt. Ltd.

Cleaning / removing the rubber particles from runway surface (Touch down points of Aircraft) by RUBBER REMOVAL EQUIPMENT and washing down the waste with water pressure (without disturbing the original surface) and removing the waste using vaccum cleaner so that surface is ready for operation and Performing Skid resistance test with PORTABLE SKID RESISTANCE TESTER (PSRT) on the rubber removed surface at the Touch down area of Aircraft @ 5.00 m c/c on both side ( Eastern / Western side ) of the center line of runway in a span of 15.00 m total width and for a given runway length of 300 m with the help of Portable BRITISH PENDULUM TESTER all as specified and directed.all as specified and directed by Engr-in-charge. Note : (a) The rubber removal is done by rubber removal equipment as per direction of Engineer-in-Charge and prior approval shall be taken from Garrison Engineer. (b) Caliberation test certificate of PSRT should be submitted for the test equipment before performing the test. (c) The rubber remvoal shall be preferably done during pre-monsoon and post monsoon period. (d) The PSRT test is to be carried out on Touch down area of runway surface at flexible as well as rigid pavements within one week of rubber removal process so as to ascertain friction value of cleaned surface. (e) The test should be performed by the qualified technician who have prior experience in this field. The test shall be conducted five times at one location and avg reading shall be considered. (f) The test report in duplicate should be submitted in hard copy as per standard format or as prescribed. (g) The Air-field is operational. So, the work shall be done durin Non - flying hours during day or night as per the direction of Engineer-in-Charge and guidelines of user & ATC.

M & L for Chipping removing carefully concrete work by low impact hammer, breaker without damaging the structure width not more than 15 cm and depth not more than 10 cm & Cutting out cracks to V-section in existing pavement, cleaning out, and disposal of debris out side the premises etc. complete as directed by Engr-in-Charge.

Material and labour for cleaning the Runway Cracks / potholes by using Compressed Air and brush, making the cracks free from dust, grease, all foreign and loose particles etc. applying Geocrete concrete resurfacing mortar on cracked / broken potholes, edges, or at any runway surface and dispersal area with width not more 15 cm and depth not more than 10 cm and applying all as per manuiacturers instruction complete all as specified and as directed by Engineer-in-Charge.

Material and labour preparing old black top surfaces by brushing with wire brushes for removing caked mud etc sweeping with brooms and finally fanning the cleaned surface with using air blower to remove all loose dirt etc and applying Cold Polymer Modified Emulsion (PME) at the rate 0.75 Kg per Sqm (undiluted) and ensure proper finishing of runway, PTT, Links etc complete all as per manufacturers' instructions and as specified and directed at site.

Repair of pot holes / pin holes area with size from 491 Sq mm to 1963 Sq mm in flexible pavements / runway / PTT with Dense Asphaltic Concrete (DAC) using Polymer Modified Bitumen (PMB - 70) including applying tack coat (PMB - 70), including cutting as required shape, cleaning, consolidating and ramming as required complete all as specified and as directed.

Repair of pot holes / pin holes area exceeding 1963 Sq mm but not exceeding 7850 Sq mm in flexible pavements / runway / PTT with Dense Asphaltic Concrete (DAC) using Polymer Modified Bitumen (PMB - 70) including applying tack coat (PMB - 70), including cutting as required shape, cleaning, consolidating and ramming as required complete all as specified and as directed.

Repair of pot holes on area exceeding 0.1 Sq m but not exceeding 0.3 Sq m in flexible pavements / runway / PTT with Dense Asphaltic Concrete (DAC) using Polymer Modified Bitumen (PMB - 70) including applying tack coat (PMB - 70), including cutting as required shape, cleaning, consolidating and ramming as required complete all as specified and as directed.

M & L for washing, rubbing down and stopping of old painted surfaces up to 15.00 metres height and applying two coat of Weather Proof Exterior Emulsion Paint [100% Acrylic] on Walls in Chequered Pattern with approved shade and size of Chequers including providing double scaffolding and safety measures as required and removal of the same on completion complete all as specified and as directed. Make : Asian Paint or Berger Paints or equivalent