GE ELECT/D-79/2025-2026

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 mtr deep in soft loose soil for laying / taking up/ taking down of cables and getting out and levelling of bottom suface to required level complete all as specified and directed by Engr-in-Charge.

Returning filling in,. Including spreading, levelling,. Watering and well ramming soil in layers not exceeding 25 cm thick complete all as specified and directed by Engr-in-Charge.

Removing excavated material (ie soil) from site to a distance not exceeding 50 mtrs away 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.

Supply and fixing common burnt bricks as mechanical protection of cables using old size sub class

Material and labour for 2 coats of synthetic enamel painting over a coat of red oxide to MS wire fencing including preparation of old surface complete all as specified and directed by Engr-in-Charge.

‘B’ bricks laid dry flat over the cable width equal to the length complete all as specified and directed by Engr-in-Charge.

(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.

(i) 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. (ii) TOP PULLEY ASSEMBLY:- The top pulleys shall be of a diameter, appropriately large enough to accommodate the steel wire ropes and the multicore electric cable. The material of construction of the pulley blocks shall be non- corrosive and made of dia cast (LM-6) aluminum alloy. The pulley assembly shall be complete with self lubricating bearing and stainless steel spindle. (iii) STAINLESS STEEL WIRE ROPES:- Stainless steel wire shall be AISC 316 grade 7/ 19 construction 2 Nos ropes for winch and 3 Nos for lantern carriage, 6 mm dia having a breaking load capacity of 2350 kg complete with stainless steel thimbles. The end for connection to the winch drum shall be fitted with thimbles and the thimbles shall be secured by copper compression splices. (g) 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.

(h) 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. (j) 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, installation, testing & commissioning HIGH MAST LT panel board, outdoor type, suitable for operation on 415 volts, AC 3 phase, 4 wire, 50 Hz electric supply system,outer body made out of 3.15 mm thick & inner shell made out of 2.00 mm thick CRCA sheet, side covers with front and back hinged doors with proper locking arrangement, rubber gasket on front and back to make it dust and vermin proof, powder coated , The cubicle shall have frame work, bottom & 45 CM long four legs of size 50 x 50 x 6 mm Angle iron, aluminium main busbar of 1.5 times to the rating of Incommer switch gear & for out goings 1.5 times of the individual switch gear duly sleeved with heat shrink sleeve colour coated for 3 Phase, 4 wire electric supply system and control wiring with multistranded PVC insulated copper wire size not less then 1.5 SQMM, complete comprising with following accessories all as specified and directed by the Engr-in-charge. (Note: Feeder pillar box shall be mounted on PCC 1:2:4 type B-1 (with 20 mm graded stone aggregate) foundation block of suitable size upto 40 cm above ground level complete all as specified and directed by Engr-in-Charge. The cost of the PCC foundation shall be deemed to be included in the unit rate quoted for the item). INCOMING:- (i) MCCB 4P 40 A, 10 KA with SPREADER Link -01 Set (ii) HIGH MAST light controls:- (iii) Contactor 32 A (AC3), 3P,- 01 No. (iv) Digital AstroTimer - 01 No. (v) Control MCB SP 6A- 03 Nos. (vi) MCBTP 16-32 A - 02 Nos. (vii) REV- FWD Starter, 05 HP:- (a) Contactor 12A (AC3), 3P,- 02 Nos. (b) OLR 5-8 A - 01 No. (c) Push button( ON/OFF, Rev/ Fwd)- 04 Nos. (d) Indicator UP/ DOWN- 02 Nos.

Supply and fixing of LED flood light Fitting 210 watt LED, suitable for mounting on High Mast Light structure, IP-65 protection, single peice pressure die cast aluminium housing high grade powder coated finish with heat resistant toughned clear glass cover for lamp and control gear compartment with high voltage surge protection device up to 5 KV, with bolts,nuts & washers complete all as specified and directed by Engr-in-Charge.

Supply, laying and testing cable XLPE insullated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 35 Sqmm 3.5 core complete all as specified and directed by Engr-in-Charge.

Supply, laying and testing cable XLPE insullated, screened, PVC bedded, galvanized steel strip or wire armoured, electric power cables (heavy duty) 1100 Volts grade with stranded aluminium conductor of size 16 Sqmm 3.5 core complete all as specified and directed by Engr-in-Charge.

Supply and laying GI tubes light grade ISI marked , galvanized, 40 mm bore laid in trenches or under floor or fixed with poles/walls for protection of electric cable complete all as specified and directed by Engr-in-Charge.

Boring of hole under road/pavement/hard standing or any other situation by mannual means and suitable for passing of GI pipe 40 to 80mm bore and making good both ends complete all as specified and directed by Engr-in-Charge.

Earthing complete with galvanized steel earth plate electrode of size 60cmx60cmx6 mm thick, buried directly in ground (earth pit not less than 3.5 m below normal ground level) with top edge of earth plate not less than 2.5m below normal ground level, connected to galvanized iron strip 25x4 mm by means of electric arc welding of galvanised iron or steel as shown in electrical plate No 3 of SSR Part I, connected to earth test point and the equipment on the other side complete all as specified, including testing and commissioning complete all as specified and directed by Engr-in-Charge.. Note : (a) The unit rates quoted against this item shall be deemed to include the cost of excavation and earth work in any type of soil, common salt & charcoal dust in alternate layers, PCC 1:3:6 as in pit, precast RCC 1:2:4 type B-1 with necessary reinforcement as in cover & frame for pit, funnel, watering pipe 20 mm bore GI pipe light grade, protection pipe 40mm bore GI pipe light grade etc. (b) The quoted rates shall also deemed to include the cost of earth test point and earth strip/GI earthing and protection pipe upto 7.5 meter beyond the earth plates electrode.

Supply & installing steel tubular swaged poles type 410 SP-31 (9 mtr long) of approx wt.147 kg conforming to IS 2713 (Part-II), complete with cast iron/MS plate 6mm thick and of size 300x300mm, final taper, pole cap, bolts, nuts, washers & screw etc including excavation, earth work, PCC foundation,PCC coping,GI pipe for cable protection etc complete all as per manufacturer's instructions and complete all as specified and directed by Engr-in-Charge. NOTE:- The unit rate in this item is deemed to be included the cost of exacavation and earth work in any type of soil, PCC foundation 1:4:8 type D-2 , PCC coping 1:2:4 type B-1 as in steel tubular pole. The steel pole shall be painted by bituminious paint total length inside and up to planting depth outside and remaining portion of pole painted with two coat of aluminium paint over a coat of red oxide complete all as specified and directed.

Supply and fixing of galvanized High mast light suitable for 8 lantern LED flood light Luminaries symmetrically fitted along with their control gear and having two point suspension system with stainless steel wire rope of 6 mm dia 7/19 gauge and double drum winch with luminaires mounting arm, pulley assembly, aviation obstruction light, lighting arrestor spike including earth work and RCC foundation as per height 16 Mtr with the following technical specification complete all as specified and directed by Engr-in-Charge. (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 complete 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.

Supplying & fixing of bracket made out of GI tubing bended at proper angle of size 40mm dia,light grade 1.5 mtr long including painting with two coat of aluminium paint over one coat of red oxide to the bracket etc complete all as specified and directed by Engr-in-Charge.

Supply and fixing KIOSK box wheather proof including made out of one piece mounted SMC base and door pole mounted hinged door size 333x233x120mm out side and 300x200x105mm inside dimensions comprising of aluminium bus bar 4 strips for 3 phase and neutral with 6 Amps MCB SP including embossing/painting of danger notice of size not less than 10cm x 7.5cm with letters, figures and conventional skull and bones in signal red colour on front face of KIOSK box body complete all as specified and directed by Engr-in-Charge.

Supply, drawing, connecting & testing 3 core, 1.5 Sqmm PVC insulated and PVC rounded sheathed, copper conductor (flexible) industrial cable 1100 Volts gradde conforming to IS-694 in steel tubular pole from KIOSK box to light fittings including providing suitable copper lugs complete all as specified and directed by Engr-in-Charge.

Supply and fixing MS angle iron, flat,Cross arms, bracings, supports, clamps and back plates fabricated from structural steel sections including nuts, bolts, washers,welding, bending cold or hot,drilling holes for bolts, in any shape or size as indicated or complete all as specified and directed by Engr-in-Charge.

Supply and fixing 3.15mm dia MS wire 75x75mm mesh , made up into mattress or cages appx 2.00 mtr height and fixed with flate iron /angle by welding in position complete all as specified and directed by Engr-in-Charge.

Each Set

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.