SPECIAL REPAIR TO WALL OF N1-N3 JETTY NEAR HQ ENC BUILDING VISAKHAPATNAM

Amount

Demolition of un-reinforced cement Concrete of any description and in any position not otherwise specifically provided for and removing rubbish to outside MD land complete all as specified and directed.

M & L for 100 mm thick, Cement concrete 1:2:4, type B-1 (using 20mm graded stone aggregate) as in base of flooring/hard standing, etc, and finished the cement concrete surfaces even and smooth without using extra cement complete all as specified and directed.

M & L for forming 12 mm thick, Expansion joints filled with pre-formed bituminous filler and top 30mm primed and sealed with sealing compound, Grade ‘A’ for 100 mm thick floor complete all as specified and directed.

M&L for boulder pitching, laid dry, hand packed tightly and pitching is grouted with cement and sand mortar 1:6 complete all as specified and directed.

Chipping of unsound /weak concrete materials from slabs , beams,columns ,lintel,chajja, fin , facia etc. (upto 50mm average thickness for slabs/Chajja) by any means as directed by engr-in-charge including tapering all edges, making square shoulders of cavities air or sand blasting etc and cleaning of exposed concrete surface of lightly picking materials by air blasting or sand blasting incl foreign matrials , loose concrete/aggregate etc and disposal of all debris out of MOD land and complete all as specified and as directed by Engr-in-Charge

Removing of concrete all around reinforcement bar upto 12 mm dia from behind the reinforcing bars average 25mm (but not less than 15mm air gap)by manual methods (using wire brushing ,chiselling etc) removing all rust from steel reinforcement bar by emery paper and cleaning the area throughly by water and allow it to dry and totally rust free and applying two component epoxy zinc rich primer on existing reinforcement surface of minimum specific gravity 1.75, adhesive bond strength with steel is 1.50N/mm2 and maximum coverage area 5.00 Sqm per litre including all necessary scaffolding complete all as specified and directed. Make- Nitozinc primer of FOSROC or equivalents chemical of SIKA/ STP/ HINDCON as approved by GE.

All as per item no 06 here-in-before but above 12 mm dia bar

Providing and applying two component epoxy bonding agent (adhesive bond strength =11 N/Sqmm) for bonding fresh wet cementitious materials to existing cementitious surfaces bonding agent of approved brand including all necessary scaffolding, complete all as per manufacturer instruction . Make :- Nitobond EP (Std) of FOSROC or equivalents chemical of SIKA / STP / HINDCON as approved by GE.

M&L for introducing new reinforcement bars upto 12 mm dia for structural connection in RCC beams, columns, lintel and slabs including power drilling holes of appropriate diameters in reinforced or plain cement concrete to a minimum depth of 150mm and upto 200mm including power drilling,fixing the reinforcement in position using epoxy, cleaning of loose dust by blowing air, sealing with epoxy cartridges etc all as specified and directed. Make :- Hilti HY 150/ Fosroc Lockfix E 75 chemical or quivalents solutions SIKA /STP/ HINDCON as approved by GE.

All as per item no 09 here in before but over 12 mm dia bar complete all as specified and directed.

Supply, materials and application of two component structural grade polymer modified reinstatement mortar of minimium compressive strength 12N/mm2 in 1 day and 45N/mm2 in 28 days. Minimum flexural strength should be 8 N/mm2 in 28 days. Single component acrylic polymer emulsion to be applied @ 6-8 sqm/lit before the application of modified polymer mortar .The morter shall be applied in layers exc 5 mm thick in layers and including surface preparation . ( maximum coverage area 1.3 sqm at 10 mm thikness per 25.25 kg bag ) Note:- This item shall be execution where shuttering is not possible or small patch repairs of structural elements . Make: (a) Acrylic polymer emulsion primer : Nitobond AR of FOSROC or equivalents solutions SIKA/STP/HINDCON as approved by GE. (b) Polymer modified reinstatement mortar:- Renderoc S2 of FOSROC or equivalents solutions SIKA/STP/HINDCON as approved by GE.

Material & labour for providing and placing in position free flow non shrink cementious microconcrete of Grade of M-50 to the effected beam, column etc. The micro concrete shall have a minimum 1 day compressive strength of 10 Mpa and 28 days strength of 50 Mpa, minimum tensile strength 5N/mm2 @ 28 days, minimum flextural strength 5N/mm2 @ 28 days and complete all as specified and directed by Engineer-in-Charge. 80 to 100 mm average thickness of column,beam and similar structural members including use and waste of water tight formwork to facillitate pouring of micro concrete including surface preparation etc. as per manufacturers instruction. Make(micro concrete):-Renderoc RG of FOSROC or equivalents solutions SIKA/STP as approved by GE.

Demolition of un-reinforced cement concrete in ground floors and pavings not exceeding 15 cm thickness, (Below or above ground level) and removing rubbish to outside MD land up to 500 m distance complete all as specified and directed.

M & L for reinforced cement concrete (1:2:4), type B1 (using 20mm graded stone aggregate) as in lintels upto 1.5m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, kerbs, water troughs and the like including weathering, slightly rounded or chamfered angles and throating, including necessary formwork complete all as specified and as directed.

S & F high strength corrosion resistant TMT steel bars 6mm to 8mm dia., and over cut to length, bend to shape required, including cranking, bending spirally for hooping for columns, hooking ends and binding with and including mild steel wire (annealed) not less than 0.9 mm dia or securing with clips quality complete all as specified and directed.

Taking down cement plaster on brick or stone walls, etc., including raking out joints, hacking for key, scrubbing down with water, etc., complete all as specified and directed.

M & L for 15 mm thick rendering in cement mortar 1:4 on fair faces of brick work or concrete surfaces and finishing the surface even and fair without using extra cement by mixing WPC @3% of weight of cement (WPC shall be paid under saparate item) complete all as specified and directed.

Supply only integral water proofing compound [ISI marked] of approved make complete all as specified and directed.

M & L for preparing newly plastered/ un plastered surfaces of walls, etc and applying three coats of white wash complete all as specified and directed.

Demolition of brick work built in cement mortar including all quoins, pillars etc and disposal of debris and rubbish outside MD land as directed by the Engr-in-Charge.

M & L for Brick work with fly ash brick, straight or curved on plan exc 6m mean radius, built in cement mortar 1:6 using old size brick complete all as specified and directed.

Dismantling wrought iron or mild steel work of any description not otherwise provided for complete all as specified and as directed.

M & L for Mild Steel Hand rails, half round or other stock section or core for wooden hand-rail straight portion, drilled and countersunk for balusters running bars, for doors, balusters, nosing to steps including embeding in concrete and screwing etc. wind ties for roof including securing bolts posts and struts in fencing (fencing post) including cutting tops to shape as directed, drilling holes, notching for wire, etc.; flat iron fillets (for securing wire mesh etc.) including all necessary drilling, bolting or riveting, etc., and similar work conforming to Fe-290 Gde E-165 ® complete all as specified and directed.

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, fixed with self tapping screws as per manufacturer's instruction complete all as specified and directed.

M & L for Preparation of new steel surfaces of any description, over 10 cm in width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide, zine chrome primer complete all as specified and directed.

M&L for preparation of old painted steel surface of any description, over 10 cm in width or girth, not otherwise described by complete removal of existing treatment, and applying two coats of synthetic enamel paint over a coat of red oxide, zine chrome primer complete all as specified and directed.

M & L for plain cement concrete (1:2:4), type B1 (using 20mm graded stone aggregate) as in lintels upto 1.5m clear span, cills, steps; seismic and other similar bands, plinth courses, string courses, lacing courses, parapets and railings upto 60 cm in height, copings, kneelers, apex stones, bed plates, kerbs, water troughs and the like including weathering, slightly rounded or chamfered angles and throating, including necessary formwork complete all as specified and as directed.

S&F 125mm Butt hinges, medium weight, cold rolled mild steel fixed or welded complete all as specified and directed.

Complete removing the plants with complete roots by chipping walls/beams/junction of vertical stacks/ water supply line or from the surfaces of the building and applying recommended chemical to prevent further growth as directed, making good the disturbed surface with cement mortar 1:3 or with PCC (1:2:4) type B0(using 12.5 mm aggregate) and applying the same surface finish of the existing surface and finished to match with the surrounding surfaces including removal of debris etc. to a distance exceeding 1.50 Km but n.exe 5.00 Km complete all as specified and as directed.

VIJAY VINAYAKA INFRA (BID ID -3298515)

HARSHITHA INFRA (BID ID -3298947)

SRK PROFESSIONAL ENGINEERING (BID ID -3298722)

JAYAM BUILD CONSTRUCTIONS (BID ID -3298711)

SREE VIJAYALAKSHMI ENTERPRISES (BID ID -3298804)

V R K CONSTRUCTIONS (BID ID -3299168)

M B CONSTRUCTIONS (BID ID -3298703)