Provision of Cover Shed for Guard Room Building No. P 29 and High Mast Light at Main Gate and Allied Works at Naval Station Bheemunipatnam

Excavation in trenches not exceeding 1.5m wide and not exceeding 10 Sq.m on plan area and depth not exceeding 1.5m and getting out in Soft / Loose soil complete all as specified and as directed.

Excavation in Post holes or similar holes each not exceeding 0.5 Cu.m, getting out in Soft / Loose soil, including returning, filling in and ramming earth or broken rubble mixed with earth around in layers not exceeding 25cm thick, watering and removing surplus soil to a distance not exceeding 50m and making good surface complete all as specified and as directed.

M & L for PCC 1:3:6, Type C–2, using 40mm graded stone aggregate as in Foundation, Fillings, Mass concrete, Footings etc complete all as specified and as directed.

Demolition of Cement Concrete of any description and in any position not otherwise specifically provided for and removing rubbish to a distance not exceeding 1.50 KM complete all as specified and as directed.

Returning, filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25cm thick of excavated soil complete all as specified and as directed. Note: A deduction of 10% shall be made from total computed volume of filling to cater in bulk irrespective of machinery used for ramming.

Removal of excavated material [Soil] to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified and as directed.

M & L for RCC 1:1½:3, Type A-1, using 20mm graded stone aggregate as in Foundations including Rafts, Footings, Foundation Beams, Plinth Beams, Bases for Columns etc complete all as specified and as directed.

M & L for RCC 1:1½:3, Type A-1, using 20mm graded stone aggregate as in Columns, Pillars, Piers, Posts and Struts etc. complete all as specified and as directed.

Use and removal of Steel Formwork to Sides of concrete Foundations, Pile Caps, Footings, Bases of Columns, Raft and Raft Beams, Sides and Soffits [if any] of Foundation and Plinth Beams and similar work, Vertical or to Batter for Rough Finished surfaces complete all as specified and as directed.

Use and removal of Steel Formwork to Sides of Pillars, Posts, Struts, Piers, Columns and Stanchions of any Shape / Cross Section for Fair Finished surfaces of concrete complete all as specified and as directed.

S & F Mild Steel work as in Tubular Trusses, Posts etc including special shaped washer etc complete using ERW or induction butt welded tubes confirming to IS - 1161, Grade YST - 240, Medium Grade of any dia complete all as specified and as directed.

S & F Rolled Mild Steel work confirming to Fe 410-W, Grade-E- 250, Quality-A as in Plates [Plain & Chequered], Channels, Angles, square cut or notched [ordinary or counter sunk] forming holes without any attachment complete all as specified and as directed.

S & F MS Machine made Screw Bolts [Galvanised] with hexagonal or square head one end and screwed other or screwed both ends, fitted with washers and one hexagonal or square nut exceeding 15 cm long and not exceeding 22.5 cm long, dia of neck exceeding 16 mm but not exceeding 20 mm complete all as specified and as directed.

S & F Reinforcement using High Strength Corrosion Resistant Deformed TMT Bars of Grade Fe–500D of 10mm dia and over, cut to length, bent to shape required including cranking, bending, spirally for hooping, hooking ends and binding with annealed mild steel wire not less than 0.9mm dia or securing with clips or welded complete all as specified and as directed.

S & F Reinforcement using High Strength Corrosion Resistant Deformed TMT Bars of Grade Fe–500D of 5mm to 10mm dia bars as in stirrups, spacers and binders, cut to length, bent to shape required including cranking, bending, spirally for hooping, hooking ends and binding with annealed mild steel wire not less than 0.9mm dia or securing with clips or welded complete all as specified and as directed.

S & F for pre-painted Galvalume steel sheets of Trapezoidal profile having pitch 190mm, depth 29mm or Tiled Profile or Sinusoidal Profile and thickness 0.50mm [Galvalume base-PPGL trapezoidal profile sheets], having tensile strength of 550 Mpa, fixed with aluminium self tapping screws, neoprene and EPDM washers of suitable size in roof covering complete all as specified and as directed. Note: Overlap shall be provided as specified by the manufacturer.

S & F for pre-painted Galvalume steel Plain Sheets and thickness 0.50mm [Galvalume base-PPGL Sheets], having tensile strength of 550 Mpa, in ridges, hips, valley gutters, drip and straight flashing cut to length & bent to shape, girth sheets fixed with aluminium self tapping screws of size 50/75mm and neoprene and EPDM washers of suitable size in roof covering / cladding / eves trim / rake trim and closure trim / valley rain water gutter / down spouts and top rafters etc. complete all as specified and as directed.

M & L for one coats of synthetic enamel paint new / old steel surfaces not exceeding 10cm width or girth including preparation of surfaces complete all as specified and as directed.

M & L for two coats of Synthetic Enamel paint over one coat of Red Oxide / Zinc Chrome Primer on new steel surfaces over 10cm width or girth including preparation of surfaces complete all as specified and as directed.

Surface excavation not exceeding 30 cm deep and averaging 15 cm deep and getting out in Soft / Loose soil complete all as specified and as directed.

M & L for Hardcore of Gauge not exceeding 63 mm of Broken Stones or Boulders, deposited, spread and levelled in layers not exceeding 15 cm thick watered and rammed to a true surface in broken boulder complete all as specified and as directed.

M & L for 100 mm thick, PCC 1:4:8, Type D-2, using 40mm graded aggregate as in Sub base for flooring complete all as specified and as directed.

M & L for Inter Locking Paver Blocks of 60mm thick, made with M35 Grade Pre-Cast Cement Concrete using 20 mm graded stone aggregate, PVC Mould reflective type, Hydraulically Pressed of approved shape, size, pattern and colour conforming to IS - 15658 including 50mm thick Sand Cushion / Bed to Inter Locking Paving Blocks including filling interstices complete all as specified and as directed.

M & L for brick work with Fly Ash bricks, straight or curved on plan exceeding 6 m mean radius built in Cement Mortar 1:6 complete all as specified and as directed.

M & L for rendering to brick / concrete surfaces, 15 mm thick in Cement Mortar 1:4, surfaces finished even and smooth without using extra cement complete all as specified and as directed.

M & L for preparation of newly plastered Wall Surfaces and applying Two Coats of Cement Based Paint over One Coat of Alkali Resistant Primer complete all as specified and as directed.

S & F Mild Steel work confirming to Fe - 290, Grade E-165, as in framed work such as Grills, Gratings, Ladders etc with ends of bars shouldered and/or riveted, or forged into spikes, framed Guard Bars, Barred Iron Doors, Ladders, framed Balusters, Walk Ways, Railings, framework of Water Tanks and similar work complete all as specified and as directed.

S & F Mild Steel Sheet Eaves Gutters, Galvanised Class 3, Half Round with rounded edges made of 1.00mm thick sheet, of 150mm dia complete all as specified and as directed.

S & F in repairs 110mm bore PVC [SWR] pipes single socketed, in any length with rubber ring joints, fixed to walls including necessary brackets, clamps as in rain water down pipes complete all as specified and as directed.

Supplying, Installation, Testing and Commissioning of Hot Dipped Galvanized Steel High Mast Lighting System of 20 Meter high with 2/3 Wire Rope System and its Accessories, 3 Phase Motor System for taking up / bringing down the Light Fixing Arrangement of the High Mast controlled from the Timer Switch Panel suitable for fixing 08 Nos of 250 Watt LED Lights symmetrically fitted along with their Control Gear and having Two Point Suspension System with Stainless Steel Wire Rope of 8 mm dia 97/19 gauge and Double Drum Winch with Luminaire Mounting Arm, Pully Assembly, Aviation Obstruction Light. Lightning Arrestor Spike including suitable size of RCC M-30 [Design Mix] Foundation suitable for the High Mast as per Manufacturer’s Specifications including anchoring with Bolts, Nuts, Washers, Anchor Plate, Template and HDPE / PVC Pipe etc. and complete all as per Manufacturer’s instructions, as specified and as directed and of the make Crompton Greaves / Philips / Havells / Wipro / GE / Bajaj / Jaquar and comprising of the following details:

[A] Details of High Mast System: [i] Hight of Mast: 20 Metres [ii] Metal Protection Treatment: Hot Dip Galvanized as per IS – 4759 / IS – 2629, average galvanisation of 70 Microns thick. [iii] No. of Sections: Two Sections, with overlap 1.5 time the dia. [iv] Material Construction: S355 Grade as per BS: EN10 025/IS2062 and Cross Section of Mast [Number of Sides] Minimum 20-Sided Polygon [v] Base Dia, and Top Diameter [A/F]: Top dia 150 mm [Minimum] & Bottom dia 470 mm [Minimum] [vi] Plate Thickness: Top 4 mm thick & Bottom 5 mm thick. [vii] Type of Joints: Stress fit at site [viii] Length of Overlap: 1.50 times the dia of insertion [ix] Provision for Cable Termination: MCB Isolator [x] Base Plate: 650 X 36 mm [xii] Size of Opening & Door at Base: 1000 X 250 mm [Minimum] [xiii] Lightning Protection Finial: GI Single Spike of Length 1200 mm [Minimum], JUNCTION box, Earthing Pipe etc. [xiv] PCD [Pitch Circle Diameter] of Foundation Bolts: 560 mm [Minimum] [xv] Foundation Bolts: 850 mm [12 Nos].

The High Mast shall be of continuously tapered, polygonal cross section, at least 20 Sided, presenting a good and pleasing appearance. The mast shall be manufactured using Special Steel Plates, conforming to BS-EN10-025. Each section shall be fabricated out of single plate duly folded and welded. There shall be only one longitudinal seam weld per section. The Mast Structure shall be suitable to sustain an assumed maximum reaction arising from a wind speed of 250 KM per hour as per IS – 875, Part – 3, and shall be measured at a height of 10 Meters above ground level. The Design Life of the Mast shall be at least 25 Years.

[B] LANTERN CARRIAGE: The Lantern Carriage shall be of special design of internal dia 710 mm made of 50 NB ERW Class "A" GI Tube, AOB Stand, the tubes acting as conduits for wires, with holes fully protected by grommets. The Lantern Carriage shall be so designed and fabricated to hold the required number of Flood Light Fittings and the Control Gearboxes and also have a perfect self-balance and suitable for fixing 6 to 8 Light Fittings.

[C] WINCH: For Raising and Lowering the Lantern Carriage for the installation and maintenance of the Luminaries and Lamps, a suitable Double Drum Double Winch Arrangement shall be provided with the Winch fixed at the Base of the Mast and the specially designed Hard Frame Assembly at the top. The Winch shall be completely self sustaining type, without the need for Brake Shoe, Springs or Clutches. Each Driving Spindle of the Winch shall be positively locked when not in use, gravity activated PAWLS. Individual drum shall also be operated for fine adjustment of Lantern Carriage. Details of Winch/Power Tool: [i] Type/SWL of Winch: Double Drum, Double Gear SWL 750 KG [ii] Method of Operation: Motorized [iii] Motor Capacity: 3 HP [Minium], 6P [iv] Torque Limiter: With Mechanical Tripping Facility and Reversible option installed inside compartment.

[D] HEAD FRAME: The Head Frame shall be designed as a capping unit of the Mast shall be of Welded Steel Construction, Galvanized both Internally and Externally after assembly. The Top Pully shall be of appropriate diameter, large enough to accommodate the Stainless Steel Wire Ropes and the Multi-Core Electric Cable. The Pulley Block shall be made of Non-Corrodible Material and shall be of Die Cast Aluminium Alloy [LM-6].

[E] STAINLESS STEEL WIRE ROPES: The suspension system shall essentially be without any intermediate joint and shall consist of only Non-Corrodible Stainless Steel of AISI-316 grade. The Stainless Steel Wire Ropes shall be of 7/19 construction and the central core shall of the same material. The overall diameter of the rope shall not be less than 8mm to achieve Safety of over 5 for the system at full load as per the TR-7 as referred in this specification. The end construction of Ropes to the Winch shall be Compression splices. Two continuous lengths of Stainless Steel Wire Ropes shall be used in the system and no intermediate joints are acceptable to achieve the required safety. No intermediate joints / terminations either bolted or else shall be provided on the Wire Ropes between Winch and Lantern Carriage. Details of Stainless Steel Wire Rope is as under: [i] Grade/Construction: AISI 316, 7/19 Construction [ii] Number of Ropes: Two Continuous [iii] Diameter: 8 mm [Minimum] [iv] Braking Load Capacity: 2550 KG per SS Wire Rope [v] 3 Nos L Stopper, Handle, Compensating Disc, D Clamps etc.

[F] POWER TOOL FOR THE WINCH: A suitable, High-Powered, Electrically Driven, Internally Mounted Power Tool, with Manual Over Ride shall be supplied for the raising and lowering of the Lantern Carriage for maintenance purposes. The speed of the power tool shall be to suit the system. The Power Tool shall be Single Speed, provided with a Motor of the required rating. The Power Tool shall be supplied complete with suitable Control Panel. The capacity and speed of the Electric Motor used in the Power Tool shall be suitable for the Lifting of the Design Load installed on the Lantern Carriage. The Power Tool mounting shall be so designed that it will be not only self-supporting but also aligns the Power Tool perfectly with respect to the Winch Spindle during the operations. A Handle for the Manual Operation of the Winches in case of problems with the Electrically Operated Tool shall be provided and shall incorporate a Torque Limiting Device. The Power Tool operation shall always be through a Separate Torque-Limiting Device to protect the Wire Ropes from over stretching. It shall be mechanical with suitable load adjusting device. The Torque Limiter shall trip the load when it exceeds the adjusted limits. There shall be suitable provision for warning the operator once the load s tripped off. The Torque Limiter is a requirement as per the relevant standards in view of the overall safety of the system. Each Mast shall have its own Power Tool Motor.

[G] AVIATION OBSTRUCTION LIGHTS: Suitable Aviation Obstruction Lights of reliable design and of Crompton Greaves / Philips / Havells / Wipro / GE / Bajaj / Jaquar Make and shall be provided on Top of Each Mast with ERP insulated PVC sheathed Copper Trailing Cable of size 5 Core,4 Sq.mm. [H] EARTHING TERMINALS: 2 Nos, earth terminal using 12mm diameter Stainless Steel Bolts shall be provided at a convenient location on the Base of the MAST for lightening and Electrical Earthing of the Mast. Each Mast shall be earthed at Two Points using minimum 25X6 mm GI Strip. Note: The Rate quoted is deemed to include the cost of Aviation Obstruction Light, Lightening Arrestor Spike, suitable size of RCC foundation for the High Mast Pole as per Manufacturer’s Design and 25 X 6mm GI Strip for earthing connection from LA Spikes at Top of the Pole to the Earthing Point.

S & F Energy efficient LED Flood Light fitting, of not less than 20000 Lumens output, 6500 K, with Pressure Die Cast Aluminium Housing, IP66 Protection and Surge Protection device of 10 KV, Heat resistant Toughened Glass Cover, high power LEDs as light source, electronic driver and connecting up with three core PVC insulated, sheathed flexible copper conductor cable of size 1.5 Sq.mm complete all as specified and as directed. Note: Light fitting shall be of PF>0.95. System efficacy ≥ 110/125LPW 10KV SPD included. Make: Model / Catalogue No. LFLN-200-CDL/60-M of Crompton Greaves or its Equivalent Model in Philips / Havells / Wipro / GE / Bajaj / Jaquar

Supplying, laying and testing XLPE insulated and PVC sheathed, FRLS, armoured heavy duty underground cable, ISI marked with aluminium stranded conductor 1100 Volt grade of size 4 Core, 25 Sq.mm cross section suitable for earthed system, laying in trenches / duct / fixed to poles / drawn through pipes / sleeving through pipe in duct, including suitable size Double compression copper stainless steel cable gland, crimping type cable lugs, sockets etc. complete all as specified and as directed.

Supplying, laying and testing XLPE insulated and PVC sheathed, FRLS, armoured heavy duty underground cable, ISI marked with aluminium stranded conductor 1100 Volt grade of size 4 Core, 16 Sq.mm cross section suitable for earthed system, laying in trenches / duct / fixed to poles / drawn through pipes / sleeving through pipe in duct, including suitable size Double compression copper stainless steel cable gland, crimping type cable lugs, sockets etc. complete all as specified and as directed.

M & L for Dry River Sand cushioning over and around the cable for cable protection in trenches, levelled and punned down complete all as specified and as directed. Note: The punned down thickness shall be measured for payment.

Supplying and laying un–reinforced Precast Concrete Cable Cover, Class LV, Type 1, Flat, of size 250mm x 150mm x 40mm complete all as specified and as directed.

Supplying and laying GI pipe, 50mm dia, Light grade for cable protection at road crossing etc. or fixing on wall / poles of any type, secured with clamps complete all as specified and as directed.

M & L for Cutting Bituminous Road / Hardstanding etc. as required for Jointing / Laying Cables and Pipeline of width not exceeding 300mm and depth not exceeding 600mm and refilling after laying and making good with PCC 1:2:4, Type B1 using 20mm graded stone aggregate, 100mm thick complete all as specified and as directed.

S & F 32 X 6mm GI Strip [Earth Lead], fixed to walls / columns / beams etc. with Saddles or porcelain blocks of 10mm thick spaced at 1.00m centre to centre including making grooves and fixing with brass screws etc. for roof conductors and down conductors above ground complete all as specified and as directed. Note: Hylam sheet block shall be in two pieces each 10mm thick, one fixed to base with brass screws and the other fixed over it with brass screws after fixing aluminium strip in the groove provided.

M & L for Earthing complete with Galvanised Steel Earth Plate Electrode 600 X 600 X 6 mm thick burried directly in ground [earth pit not less than 2.25 m deep below ground level] with top edge of Plate not less than 1.50 m below normal ground level connected to 32 X 6mm GI Strip [Earth Lead] and GI pipe 50 mm, Medium Grade for earthing lead protection to the extent of maximum 7.5m, Earth Plate Electrode surrounded by 150mm thick packed layers of Charcoal and Common Salt filled in alternate layers, connected to the Plate by means of GI Bolts & Nuts complete all as per Electrical Plate No. 3 of SSR Part – I, connected to panel / DB including testing on completion including main earthing, Charcoal, Common Salt, PCC [1:2:4, Type B1] Pit with RCC 1:2:4, Type B1 Cover, 50 mm thick with 6 Nos, 8 mm dia TMT bars in both ways, MS frame made with 40 X 40 X 6 mm Angle Iron, MS Funnel with 20 mm bore, medium grade GI Watering pipe, wire mesh, earth work excavation, return filling, removal of surplus soil etc. complete all as specified and as directed.

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