GE ELECT/D-84/2025-2026

Amount

Supply & installation of 15 mtr height High galvanized mast light suitable for 8 lantern symmetrically fitted and 180 KM/hr wind speed along with their control gear and having two point suspension system with stainless steel wire rope of 6 mm dia 97/19 guage and double drum winch with luminaire mounting arm, pully assembly, aviation obstruction light, lightning arrester spike, control panel, construction trailing cable 3 core 2.5 Sqmm 1 No per mast upto heigh, foundation nut and bolts of suitable size hot dipped galvanised from special steel along with nut and washers, anchor plate and template & curcuit wiring with 10 Sqmm copper wire, and power tool control including RCC foundation as per height approved by OEM complete all as specified and directed by Engr-in Charge. Note :- The cost of earth work, excavation and RCC for foundation of high mast is deemed to included in the quoted rate. (a) MAST STRUCTURE:- The high Mast shall be of continuously tapered, polygonal cross section polygon type (Minimum 16- Sides) of 15/16 Mtrs. in height presenting good visual appearance and shall be based on proven design to given assured performance, reliability and service. The Mast shall have an approximate top diameter of say 150 mm to 200 mm and bottom diameter of 350 mm to 450 mm, The weight of the Mast shall not exceed more than 1600 kgs, excluding weight of Luminaire, to maintain good elasticity of slender structure. (b) MAST CONSTRUCTION :- The Mast shall be fabricated from special steel plates of BS EN 10025 grade, cut and folded to form polygonal section and shall be telescopically jointed and fillet welded. The welding shall be in accordance with BS: 5135. The procedural weld geometry and the workmanship shall be exhaustively tested by the radiography on the completed welded and certificates submitted. The Mast shall be delivered in only 2 sections without any circumferential welding at site, which shall be joined together by slip-stressed-fit method. The joining shall be with stressing equipment, thus forming the sleeve joint. No site welding or bolted the joint will be accepted. The overlap distance shall have full penetration of longitudinal welds. The base plate of the mast shall be at least 25 mm. thick. An adequate door opening min 1400mm x 300mm shall be provided at base of each mast such as to permit clear access to equipment like winches, cable pug and socket, etc. The opening shall be complete with a close fitting vandal resistant, weather-proof door provided with a heavy duty lock. For metal protection of the Mast, the entire fabricated Mast shall be hot dip galvanised internally and externally, having minimum average thickness of 65 microns. (c) DYNAMIC LOADING:- The Mast structure shall be designed for an assumed maximum reaction arising from the maximum wind speed at Mendhar and measured at a height of 10 Mtrs. above ground level . The design life of the Mast shall be min. 25 years. Wind excited oscillation shall be damped by the method of construction and adequate allowance made for the related stresses. The offered High Mast shall be a tested design. (d) FOUNDATION:- The tenderer shall see the site closely and minutely with regard to the nature of the soil, average depth of decomposed garbage and debris at proposed Mast locations and the other site conditions before working out the type of foundation and specifications for the proposed High Mast. The tenderer shall be responsible for the design of the foundation and safe erection and installation of the High Mast in mechanically and structurally safe working condition for the design life of the Mast as per manufacture design The load bearing (safe) capacity of the soil shall be indicted by purchaser to decide the type of foundation and its specifications. The holding down bolts shall be at least 20 nos. of high tensile strength and shall be supplied complete with anchor plate of 6 mm thick for casting into the foundation. The ensure correct vertically and horizontality of bolt alignment. (Note : Cost of foundation as per specification of manufacturer shall be deemed to be included in the rate quoted by the contractor)

(e) LANTERN CARRIAGE:- The fabricated lantern carriages shall be provided for holding fittings and control gear provided on each High Mast. The lantern carriage shall be of special design and of durable steel tube construction designed to act as electric conduit with cable holes fully protected by grummets. The diameter of the lantern carriage shall be suitable so as to hold designed number of LED floodlight fittings, as specified in the tender design along with the control gear boxes and lantern. The lantern carriage shall be fabricated in three parts joined by bolted flanges with SS bolts with nuts to enable easy removal from the erected mast for replacement/ maintenance purpose. The carriage shall be supported/ suspended by three wire ropes for better stability. The lantern carriage Assembly shall not touch the lower surface of the Mast. The carriage design and fabrication shall be such that the lantern carriage will suit the lanterns and their control gear boxes to be used in the work. The Lantern Carriage shall be so installed that it does not cause any damage to the surface of the Mast and is provided with protective buffer arrangement. The complete Lantern carriage shall be hot dip galvanised after fabrication. The weather - proof cast aluminum junction boxes (IP-66) shall be provided on the Lantern carriage assembly from which the inter- connections will be made to the designed number of floodlight fittings and lanterns on the carriage. (f) MECHANICAL ARRANGEMENT:- For installation and maintenance purpose, it will become necessary to raise or lower the lantern carriage assembly. To enable this, a suitable winch arrangement shall be provided in the base of the Mast, complete with top pulley, winch stainless steel wire ropes and winch driving power tool. (g) WINCH:- The winch shall be of completely self-sustaining type. the winches shall be of self- sustaining type by means of an oil bath and the lubrication shall be of recommended quality. Termination of the ropes of the winch shall be in such a way, that it does not involve distortion or twisting of the rope configuration. At least 6 turns of rope shall remain in tension on the drum even when the lantern carriage is fully lowered. the winch shall be designed to be installed or removed form the door opening at the base of the mast. The winch drums shall be grooved to ensure mechanically strong, stable and tidy rope lay with no chances of rope slippage or skippage. The winch shall be capable of operation by hand or by means of external power tool. Integrated power tool with worm is not acceptable. A test certificate shall be supplied along with each winch in support of the maximum load operated by the winch and for the safety of operation at the full load rotation. A handle shall also be provided for hand operation of the winches.

(h) CABLE AND CABLE CONNECTIONS :- The connections shall be made with flat core flexible round sheath power cables of appropriate rating as per the schedule. The base compartment of the High Mast shall have one terminal box for terminating the incomer cable. The maintenance cables equal to that within the Mast and fitted with travelling cable 5 core 4 sqmm flexible having plug socket shall be provided to energize lanterns while in lowering position by hooking up at the base compartment socket supply. Similarly, the provision shall be made for electric supply at the base compartment to enable operation of the external power tool for lowering or rising of the lantern carriage assembly. The trailing cables of the lantern carriage rings shall be terminated by means of metal cased plug and socket provided in the base compartment to enable flexibility. (j) WINCH DRIVING POWER TOOL :- The electric driven tool shall be single speed, (1.2 Mt/min) reversible three phase & hand operated motor. The power tool shall be complete with very robust remote control switch such that the tool can be operated from safe distance of 5 Mtrs. There shall be and arrangement for self alignment off power tool which can be self supported during operation. Manual handle shall be provided for hand operation of the winches. The capacity rating and speed of the electric motor used in the power tool shall be specified by the tenderers. (k) LIGHTNING FINIAL & AVIATION OBSTRUCTION LIGHTS:- One number heavy duty hot dip galvanised lighting finial shall be provided for each mast. Suitable aviation obstruction lights of reliable design and reputed manufacturer shall be provided on top of each mast.

Supply and fixing LED flood light 120 watt 230 V AC outdoor type with thermal management in multiple optics and equipped with IP66 protection, with impact and corrosion resistant complete with driver and lamp complete all as specified and directed by Engr-in Charge.

Material and Labour steel tubular swaged pole 09 metre long complete with cast iron base plate finial taper plug ,bolts, nuts and secrew all as specified type 410, SP-31 (9.0 metres long) includuing painting up to 1.5 M above PCC coping in black and white strips 5 Nos each 30 CM high staring from bottom of pole and two coats of epoxy based paint alumimium grade finish to remaining external surface over one coat of suitable primer complete all as specified and directed by Engr-in Charge.

Supply and fixing LED Street light 60 watt 230 V AC outdoor type with thermal management in multiple optics and equipped with IP66 protection, with impact and corrosion resistant complete with driver and lamp complete all as specified and directed by Engr-in Charge.

Supply & lay or fixing or passing through pipe or in cable ducts, 1100 volts grade, XLPE, armoured, electric power cables (heavy duty) with aluminium conductor of size 10 sqmm 4 Core complete all as specified and directed by Engr-in Charge.

Supply & lay or fixing or passing through pipe or in cable ducts, 1100 volts grade, XLPE, armoured, electric power cables (heavy duty) with aluminium conductor of size 16 sqmm 4 Core . Note : Cable gland & lugs deemed to be included in the qouted rate complete all as specified and directed by Engr-in Charge.

Supply & lay or fixing or passing through pipe or in cable ducts, 1100 volts grade, XLPE, armoured, electric power cables (heavy duty) with aluminium conductor of size 25 sqmm 4 Core . Note : Cable gland & lugs deemed to be included in the qouted rate complete all as specified and directed by Engr-in Charge.

Excavation in trenches n.exc 1.5mtr wide and not exc 1.5mtr depth and getting out in soft and loose soil complete all as specified and directed by Engr-in Charge.

Excavation in trenches not exceeding 1.5 mtr wide and exceeding 1.5 mtr but n.exc 3.0 mtr in depth and getting out in any type of soil for taking up or laying of cable, foundation of poles, stay etc complete all as specified and directed by Engr-in Charge.

Returning and filling in of excavated material any type including spreading,levelling,watering and well ramming in layers not exceeding 25 cm each complete all as specified and directed by Engr-in Charge.

Removal of surplus excavated material of any type not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above the starting point complete all as specified and directed by Engr-in Charge.

Material and Labour for Sand cushioning/sand covering for underground cable protection complete all as specified and directed by Engr-in Charge. Note: Punned thickness only will be measured and paid.

Supply and laying sub class 'B' bricks of old size (approved size locally available) laid along alignment of cable as protection to cable in trenches complete all as specified and directed by Engineer-in-Charge

Material and Labour for GI pipe light grade 50 mm dia laid along road crossings / plinth protection with suitable fittings for cable protection or fixed to the pole/ Wall complete all as specified and directed by Engineer-in-Charge .

Material and Labour for cement concrete 1:4:8 type D2 ( using 40mm graded stone aggregate) for base of foundation of pole / stay including form work etc complete all as specified and directed by Engr-in Charge.

Material and Labour for cement concrete 1:3:6 type D2 ( using 40mm graded stone aggregate) for foundation of pole / stay including form work etc complete all as specified and directed by Engr-in Charge.

Material and Labour for PCC 1:2:4 type C1 using 20mm graded crushed stone aggregate as in coping of pole, including necessary form work complete all as specified and directed by Engr-in Charge.

Supply and Fixing in repair PVC insulated 3 core 1.5 Sq mm stranded copper conductor cable for connecting junction box to street light fitting testing and commissioning complete all as specified and directed by Engr-in Charge.

Supply and fixing timelite distribution boards (street light DBs) 65 A 3 pole with 230 V Astronomical time switch complete all as specified and directed by Engr-in Charge.

Supply and Fixing loop-in/loop-out box of internal size 250 x 200 x 100 mm made out of FRP(Hot moulded type) with weather proof canopy and locking screws along with with 5/6 Amps MCB - 01 No, 50 Amps rated 3 pole connector- 01 Nos, neutral link mounted and Din rail suitable size for mounting MCB/Connector etc complete in the box, duly fixed to to steel tubular pole using 25 x 3mm FI clamp, including suitable gland and lugs for connecting cable complete all as specified and directed by Engr-in Charge.

Material and Labour for bracket for street light fitting made out of 40 mm bore pipe light grade GI tube bent to shape required, not less than 1.20 meter long, fixed with and including MS flat iron clamps made out of 40x6 mm FI, bolts, nuts, washers etc complete all as specified and directed by Engr-in Charge.

Supply and Fixing 40mm Gavlvanised steel tube light grade for passing of cable through foundation upto junction box of street light complete all as specified and directed by Engr-in Charge.

Material and Labour Earthing for poles and other machinery/eqpt using GI strip as earth lead and MS galvanized steel earth plate electrode 600 mm x 600 mm x 6 mm thick buried directly in ground (earth pit not less than 2.25 mtr deep below ground level) with top edge of the plate is not less than 1.5 mtr below normal ground level connected to galvanized iron wire of 4mm with GI pipe, nuts, bolts and washers complete upto and , PCC pit of required size in PCC 1:2:4 type B1 and RCC cover with frame, charcoal, common salt15cm at round the earth plate watering pipe 20mm med grade/galvanized and 40mm dia GI pipe light grade for GI strip protected steel with funnel complete all as specified and directed by Engr-in Charge.

Note : Contractor should procure and provide 50 % of the material as listed above within 15 days of the placing of work order and shall be verified by the Engr-in-charge.

M/S ADHIKARI CONSTRUCTION CO. (BID ID -3517924)

mayur enterprises (BID ID -3517546)

BRIJ MOHAN LAL AND CO. (BID ID -3520140)

S K ENGINEERS AND CONTRACTOR (BID ID -3520063)

Vijay Electricals (BID ID -3520272)

Ridhi engineers and builders (BID ID -3520015)

M/S ANIL KUMAR (BID ID -3520362)