REPAIR TO WATER PROOFING TREATMENT FOR ROOF SLAB EXTERNAL WALLS CRACK FILLING IN CERTAIN BUILDINGS IN HANSA TECHNICAL AREA NAY G ETC UNDER AGE BR I OF GE NW VASCO

Amount

M&L for gunniting exposed concrete surfaces of beam, column and slabs with one layer of conplast spray set modified concrete in proportion (50Kg cement 3 to 6mm granite chips 75 kg zonal sand 75 kg and complast 2% by weight of cement water 1 to the following locations :-

(a) 40 mm thick in columns

(b) 30 mm thick in beams

S&F hard drawn steel wire fabric cut to length bent to shape required and tying with and including mild steel wire (annealed) not less than 0.9mm dia not exc. 4 Kg/sqm.

Bonding the entire exposed surface with one coat of fosroc Nitop bond SBR as per manufacturer insltructions over whire fabric and surfaces of concrete structure

M&L for Rendering 5 mm thick cement plaster on ceiling in CM 1:3 finished to even & smooth w/o using extra cement.

M&L for Rendering 15 mm thick cement plaster on concrete solid block walls in two coats first coat of 10 mm in CM 1:4 & 2nd coat of 5mm in CM 1:4 mixed with integral water proofing compound finished to even & smooth w/o using extra cement. Note :- Integral water proofing compound will be measured and paid separately.

Supply only water proofing compound

M&L for rendering 15 mm thick in CM 1:6 on concrete solid block wall internal surface finished even and smooth without using extra cement.

M & L for removing the spalled concrete upto the sound core level and clean reinforcement with wire brush to remove loose scales, cleaning of the surface with wire brush and plenty of water so as to remove the loose particles, dust, laitance etc, remove the rust by using rust remover of approved make .Apply passivator coat using zinc primer of approved make on reinforcement bars. Apply bond coat using "Epoxy bonding agent" on entire surface, when bond coat becomes tacky apply repair mortar (mortar to be prepared by adding 20% Dr. Fixit Pidicrete MPB or equivalent to 1:3 cement sand mortar) at a thickness upto 15mm and subsequently built up the required thickness in subsequent layers of 15mm and finishing the final layer even and smooth as per manufacturers instruction and as directed. Make : M/s Pidilite Industries Ltd or Equivalent in M/S Krishna Conchem Products/ STP Ltd. Note- Universal polymerised repairs mortars single pack like pagel U40 or Dr fixit micro concrete may also be used

Taking down cement plastering at any description on brick or stone wall etc including raking out joints hacking for key scrubbing down with water etc and removal of debries and depositing where directed.

M&L for Preparing new plastered wall surfaces and applying two coat of OBD over chalk whiting, on plastered surfaces, preparatory to distempering, after applying 3mm thick wall care putty on wall

M&L for Preparing new plastered ceiling surfaces and applying two coats of OBD over chalk whiting, on plastered surfaces, preparatory to distempering, after applying 3mm thick wall care putty on ceiling

Dismantling/Taking out existing hessain base felt of any other existing water proofing treatment from roof including cement plaster and exposing the top surface of RCC slab including removing dust, dirt and washing the roof and removing the dismantled debris to a distance exceeding 200 m but not exceeding 3000m spread and levelled as directed by Engineer-in-Charge.

M&L for applying the primer Dr. Fixit Primeseal as specified maintaining 2:1 dilution ratio. The substrate during application of primer to be in SSD condition. Providing & Applying microfiber reinforced acrylic based flexible waterproofing coating Dr. Fixit Newcoat of M/s Pidilite Industries Ltd having properties - Elongation at Break, 80 %, tensile Strength, 1.2 n/mm2, adhesion Strength, 1 n/mm2. Apply 1st coat of Dr. Fixit Newcoat at the rate of 2 sq. mt. per litre, Apply second & third coat of Dr. Fixit Newcoat with the same application coverage to achieve DFT of 1 mm. Drying time between coats will be 6 to 8 hrs. Air cure the coating for 7 days, before water pound test. Make : M/s Pidilite Industries Ltd or Equivalent in Sika/ STP Ltd.

Dismantling Single layer Mangalore pattern or similar tiles in roofing embedded in cement mortar as directed by Engineer-in-Charge.

M&L for Laying of Mangalore tiles and Providing and making mortar battens with 1:3 cement sand mortar followed by laying Mangalore tiles after 7 days curing of mortar battens including fixing of ridge tiler with 1:5 cement sand mortar

M&L for Providing 10mm thick plaster in CM (1:4) mixed with 3% integral water proofing compound over roof top surface incl filling all cracks by forming groove of 5mm x 5mm finished to even & smooth w/o using extra cement. Note :- Integral water proofing compound will be measured and paid seperately

M&L for priming surfaces and applying normal treatment (for moderate conditions) using glass fibre base bitumen felt grade 2 complete all as specified and directed.

M&L for APP based polymeric membrane minimum weighing 3Kg/sqm and minimum 3mm thick reinforced with polyster non wove fabric (wt. not less than 150 gms/sqm) land on primed surface by forced application completed all as specified.

M&L for Surface Preparation, Cleaning the surface, removing the laitance, greese, old paints, contaminants, moss etc. with wire brush / high preesure jet. Damaged or loose plaster to be replaced & repaired with polymer modified cement-sand mortar with Dr. Fixit Pidicrete URP. Small cracks upto 5mm needs to be repaired with crack filling material Dr. Fixit Crack X and the cracks above 5mm shall be repaired by polymer modified mortar with Pidicrete URP. Make : M/s Pidilite Industries Ltd or Equivalent in Sika/ STP Ltd.

M&L for SIKA Bit® W-1 (Red or Grey powder) polymer modified cementitious adhesive over prepared concrete surface with mixing ratio of 8.75 ltrs of clean water per 30 Kg bag of SIKA Bit® W-1 with consumption of 2-3 Kg/Sqm. complete all as specified and directed by Engineer-in-Charge.

M&L SIKA Bit® W-15, 1.5 mm thick (with 10% variation) double sided modified bitumen water proofing membrane consisting of cross laminated PE film and two modified bitumen layers covered with transparent release liners complete all as specified and directed by Engineer-in-Charge.

Dismantling plain or corrugated AC sheeting any gauge, thickness in roof coverings

S&F Pre- painted galvalume aluminum zinc coating GI based corrugated steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall of building/Hangar, fixed with self tapping screws as specified

Pre-painted galvalume aluminium zinc coating GI based plain steel sheet 0.50mm of an colour having tensile strength of 550Mpa as in roof covering/cladding to wall, fixed with self tapping screws as specified

Taking down eaves gutters and rainwater pipes (any size or pattern), including all fittings, heads, shoes, bends, swan-necks, etc., including cleaning or refixing or removal to Store (measured overall as fixed along the centre line over fittings and accessories)

S&F PVC Rain Water Pipe 150 mm dia including all fittings, head , shoes, branches all as specified fixed in wall including joint with PVC adhesive

Dismantaling water tanks and removing to store exc 250 and n.exc 500 ltrs

Dismantaling water tanks and removing to store exc 500 but n. exc 1000 ltrs

S&F rotational moulded polyethylene water storage tanks (cylinderical, vertical with closed top) of 500 Ltrs capacity hoisted and fixed in position inc 20mm bore PVC float valve all as specified and directed in SSR Pt I

S&F rotational moulded polyethylene water storage tanks (cylinderical, vertical with closed top) of 1000 Ltrs capacity hoisted and fixed in position inc 20mm bore PVC float valve all as specified and directed in SSR Pt I

Disconnecting existing tanks of capacity exc 250 and n exc 500 Ltr setting aside (or lowering if required) for repairs, cleaning etc and hoisting if required reconnecting and refixing in position complete all as specified and directed.

Disconnecting existing tanks of capacity exc 500 and n exc 10000 Ltr setting aside (or lowering if required) for repairs, cleaning etc and hoisting if required reconnecting and refixing in position complete all as specified and directed.

M/S DUBAL CONSTRUCTION

SHIVRAJ CONSTRUCTIONS

M/s VEEJEE ENTERPRISES

Leela Enterprises

Shree Ram Enterprises

SHREE THATWAMASSY CONSTRUCTIONS PRIVATE LIMITED