REPAIRS TO RCC ROOF TREATMENT, PARAPET WALLS, RAIN WATER PIPES INCLUDING CUTTING DOWN VEGETATION GROWTHS IN ACCESSIBLE AND NON ACCESSIBLE ROOFS AND OTHER CONNECTED WORKS IN CERTAIN BUILDINGS OF AREA E AND DAS AT NAVAL DOCKYARD VISAKHAPATNAM UNDER GE(

Amount

Demolition of brick work/PCC Block masonry or stone / boulder masonry built in cement mortar including removal of debries outside of Dockyard premises complete all as specified and directed.

M&L for Pre cast cement concrete type 1:3:6 type C-1 (20mm graded stone aggregate) block masonry with solid blocks exc 10 cm in width and setting in cement mortar 1:4 complete all s specified and directed.

Taking down cement plaster on brick/RCC parapet walls etc including racking out joints hacking for key, scrubbing down with water etc,complete all as specified and directed.

M&L for rendering 15 mm thick plaster in CM (1:4) on fair face of brick or concrete surfaces of walls finished even and smooth without using extra cement complete all as specified and directed.

M & L for preparation of newly plastered surfaces of and walls and applying two coats of exterior emulsion paint (weather coat) over a coat of alkali resistance primer over a coat of wall putty minimun thickness 1.5mm and cutting to smooth surfaces by sand paper complete all as specified and directed.

Demolition of RCC work of any description and in any position not otherwise specifically provided forincluding removal of debris outside ND(V) complete all as specified and directed (reinforcement cut as required to facilitate demolition).

M&L MS rolled section of grade Fe-410-W (Gde - E-250), quality - A (beam, tee, angle channel or flat sections) as in roof trusses (framed), trussed purlins, crane gantries rails, and fastening and heavy bracket framing including distance pieces, cleats etc.including dismantling existing one complete all as specified and directed.

M&L preparation of new or previously untreated steel and iron surfaces of any description over 10 cm width or girth and applying two coats of synthetic enamel paint over a coat of red oxide zinc chrome primer complete all as specified and directed.

S&F Pre- painted galvatume aluminum zinc coating GI based corrugated steel sheet 0.50mm thick of an colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws as specified including dismantling existing one complete all as specified and directed.

S&F Pre-painted galvalume aluminum zinc coating GI based Plain steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws as specifiedd including dismantling existing one complete all as specified and directed.

M&L for removal of existing membrane of roof treatment,water proofing treatment at parapet / vertical walls, cleaning the concrete / plastered surface, removing dirt and debris, making defective locations and removing loose concrete plastered surface by careful stripping untill hard surface is exposed, cutting the concrete / plastered surfaces to regular shape, wire brushing the exposed surface and removing debris outside ND(V) area complete all as specified and directed.

Brushing neat cement slurry @ 3.0 Kg of cement per sqm all as specified and directed for bonding between old and new concrete all as specified and directed.

M&L 40 mm thick (av Thickness) PCC 1:2:4 type B1 (using 20 mm graded crushed stone aggregate) as in padding over roof and finishing the surfaces fair and even without using extra cement complete all as specified and directed.

M&L water proofing treatment on cleaned RCC roof comprises with the following operation as specified here-in-below :- (a) 20 mm thick (av. mimimum thickness) plastering in cement mortar 1:3 mixed with liquid water proofing compound @ 3% by weight of cement & finishing the plastered surfaces even and smooth over cleaned RCC roof. The plastered surface shall be cured properly for ten days by ponding of water over roof. (b) After drying the surface, apply bitumen primer of density at 25°C, 0.87 to 0.89 kg / Liter and viscosity 70-160 cps over the plastered surface @ 0.40 Ltr / Sqm. The manufacturer of primer shall be the same

membrane manufacturer (c) Providing and laying 3mm thick APP (Atactic Polypropylene Polymer) modified prefabricated five layer, weight not less than 3.6 kg/Sqm water proofing membrane, black finished reinforced with non woven polyester matt make as approved over the primer coat. Membrane shall be laid using butane torch and sealing all joints etc all as per Para 11.44.5 of SSR Part I. (d) Applying one coat of Aluminium paint @ 0.1 ltr per Sqm over APP based polymetric membrane complete all as per manufacturer's instruction.

M&L water proofing treatment on vertical surfaces like. parapet walls etc. comprises with the following operation as specified here-in-below :- (a) 15 mm thick (av. mimimum thickness) plastering in cement mortar 1:3 mixed with liquid water proofing compound @ 3% by weight of cement & finishing the plastered surfaces even and smooth over cleaned surfaces. The plastered surface shall be cured properly for ten days . (b) After drying the surface, apply bitumen primer of density at 25°C, 0.87 to 0.89 kg / Liter and viscosity 70-160 cps over the plastered surface @ 0.40 Ltr / Sqm. The manufacturer of primer shall be the same membrane manufacturer (c) Providing and laying 3mm thick APP (Atactic

Polypropylene Polymer) modified prefabricated five layer, weight not less than 3.6 kg/Sqm water proofing membrane, black finished reinforced with non woven polyester matt make as approved over the primer coat. Membrane shall be laid using butane torch and sealing all joints etc all as per Para 11.44.5 of SSR Part I. Primer & the membrane shall be inserted in the groove & the groove shall be sealed with cement mortar 1:3 mixed with liquid water proofing compound @ 3% by weight of cement (d) Applying one coat of Aluminium paint @ 0.1 ltr per Sqm over APP based polymetric membrane complete all as per manufacturer's instruction.

M&L for cutting grooves in brick wall, 75mm wide and 65mm deep and shaping horizontal face of groove with cement mortar 1:3 complete all as specified & and directed

Taking out PVC (SWR) soil waste and vent pipe of any size including all fittings etc complete all as specified and directed

S&F 110 mm dia PVC (SWR) pipes single, socketed, in any length with rubber ring joints fixed to wall complete all as specified and directed.

S&F 160 mm dia PVC (SWR) pipes single, socketed, in any length with rubber ring joints fixed to wall complete all specified and directed.

S&F 160 mm bore PVC (SWR) bends (any radius) with oval access door complete all as specified and directed.

S&F 110 mm bore PVC (SWR) bends (any radius) with oval access door complete all as specified and directed.

Taking out deteriorated / leaking valley gutters of any shape, size and material from the work shop buildings at height of 6 m to 20 m including disconnecting the funnels from gutters & rain water pipe, in position and S&F new valley gutters with new Pre- painted galvalume aluminum zinc coating GI based plain sheet of 0.6 mm thick made to shape and size ( width of sheet required is 800 mmtto1200 mm) with 200 mm over laps with double washer self driving screws at joint using leak proof jointing material (Tar roof compound or similar material) and fixed in position complete all as specified and directed.

Taking out deteriorated / unserviceable funnels of valley gutters of any shape, size and material from the work shop buildings at height of 6 m to 20 m including disconnecting the funnels from gutters & rain water pipe, in position and Supply & fixing with new funnel made out of Galvalume plain sheet of 0.60 mm thick to required shape and size to match with the existing funnels with extra collar of 50 mm over the actual outer diameter of rain water pipe and inserting into the rain water pipe with 150mm length in to the rain water pipe with double washer self driving screws using leak proof jointing material (Tar roof compound) or similar material and fixed in position complete all as specified and directed. Note:- MS flat iron clamps shall be measured and paid separately under respective iten in this schedule as 'supply only'

Supply only MS flat iron clamps made to any shape with flat iron of 40mm wide and 6m thick (Length of FI required for each clampis 1.00m to 1.50 m ) to support the valley gutter, rain water pipes etc, complete all as specified and directed.

Cleaning and removing all debris/ vegetation from roof surfaces of any height and cleaning the mouth of rain water pipe and removal of material outside ND(V) land complete all as specified and directed.

Cleaning of roof / vally gutter upto 600 mm wide including cleaning of RWP holes spouts at height of 6 m to 20 m of workshop buildings by rodding or with bamboo split and well flushing with water after cleaning the same and arresting the leakage by passing by suitable size of PVC SWR / fittings side pipe or by chipping off old concrete and applying concrete / cement mortar using with WPC, including removing of plant / Vegetation growths debris outside ND(V) area complete all as specified & directed complete all as specified and directed. Note :- Necessary bends, pipes etc.shall be measured and paid separately under respective iten in this schedule as 'supply only'

S&F in repair 610mm dia concerntina coil in fencing with all the required clips, pins etc as per manufacturer's specification fixed on the angle iron framed bracket/posts. Each concerntina coil shall be fixed to MS Angle with existing rows of barbed wire, on each of bracket , the coil shall be with HTGE speing core wire of diameter 2.59mm, pitch between the barb shall be 24.5mm, tape shall be hot dip galvanised upto 20 microns, weight of each coil shall be 7.5 to 8.00 kg, tape shall be 0.5mm thick, tensile strength shall be not less than 1600 n/mm2, minimum 50 short bladed profile of minimum blade length 11mm and width before crimping is 18mm minimum including dove all clips @ clips per 2 spirals turns approx 125 clips per coil complete all as specified and as per manufacturer's instructions.

N V S S K N SIVA PRASAD (BID ID -3221768)

K V P RAJU (BID ID -3221434)

SINGH BUILDERS (BID ID -3221897)

SREE HANUMAN ENTERPRISES (BID ID -3221875)

bhavani constructions (BID ID -3221738)

P SRINIVASA RAO (BID ID -3218881)

venkata sai constructions (BID ID -3218649)