PROVN OF HIGH MAST LIGHTS AT PERIERA ENCLAVE AND PROVN OF 05 X HIGH MAST LIGHT (LED) AT 1 WIRELESS EXPERIMENTAL CENTRE UNDER GE (U) ELECTRIC SUPPLY, DELHI CANTT-10

Amount

Excavation in trenches not exceeding 1.5 metre wide & not exceeding 1.5 meter in depth for foundation,laying of cable or pipe ( where provided for protection of cable or fixing with poles and stays) and getting out in any type of soil including trimming the sides and forming bottom surfaces to required levels complete all as specified and directed.

Removing surplus excavated soil to a distance n.exc. 50 metre and depositing where directed at a level n.exc.1.5 metre high from the starting point.

Returning, filling in trenches in soft/loose soil in layers n.exc. 25 cm after laying of cables including spreading, levelling, and well ramming complete all as specified and directed.

M&L for sand filling in trenches with clean dry unwashed sand free from sharp particles, gently punning around the cables complete all as specified and directed.

Supply and laying brick old size, sub class 'B' brunt bricks laid in trenches as cable cover across the cable in trenches complete all as specified and directed.

Supply and fixing of galvanized High mast light suitable for 9 lantern LED flood light Luminaries symmetrically fitted along with their control gear and having two point suspension system with stainless steel wire rope of 8 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 20 Mtr with the following technical specification. Make of High mast:- Crompton greaves/Bajaj electric/ C&S Electric NOTE:-Technical and foundation drawings shall be submitted by the contractor/OEM for approval of accepting officer before commencement of work (a) MAST STRUCTURE:- The high Mast shall be of continuously tapered, polygonal cross section polygon type (Minimum 16- Sides) of 20 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 180 mm to 200 mm and bottom diameter of 406 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 10-025 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 Delhi 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. (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, 8 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 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. Make of High mast:- Crompton greaves/Bajaj electric/ C&S Electric NOTE:-Technical and foundation drawings shall be submitted by the contractor/OEM for approval of accepting officer before commencement of work (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 Delhi 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. (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.

S&F 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 all as specified.

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.

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 25 Sqmm 4 core.

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 all as directed .

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 all specified and directed

Supply, installing, testing and commissioning of factory made and tested Bus bar chamber outdoor type with canopy made out of 3.15 mm CRCA MS sheet, and 40x40x5mm thick MS angle iron frame work, powder coated finish over one coat of red oxide primer on outside surface and painted inside with two coats of red oxide primer, front opening type, with apron for cable entry closing locking arrangement ,of size 450mm x 450mm x 300mm with 4 Nos 500 Amps aluminium bus bar and with 200 Amp MCCB, 4 pole, 36 KA, 415 Volt 50 Hz including excavation, earth work and platform for the Bus bar chamber with PCC 1:4:8 type D-2 with 40 mm graded crushed stone, 15 cm thick in foundation, brick work in CM 1:6 with sub class 'B', old size bricks, rendering 15 mm thick in CM 1:6 on exposed surfaces and 100 mm thick PCC padding 1:3:6, type C-1 using 20 mm graded crushed sotne aggregate on top and grouting bolts etc for Bus bar chamber. The platform shall be such that it is of a height 45 cm above the nearest road level.

Earthing complete with galvanised steel earth plate electrode 60 cm x60 cm x 6 mm thick buried directly in ground ,(Earth pit not less than 2.25 meter deep below ground level) with top edge of plate not less than 1.5 meter below normal ground level ,connected to and including galvanised iron earth strip 25x4 mm by means of nut, bolts, check nuts and washers of galvanised iron or steel and provision of charcoal dust and common salt packed all around the earth plate including necessary excavation and earth work in any type of soil and testing complete all as specified and directed and shown in electrical plate number 5 of MES SSR part-I(1991)(a) Excavation and earth work for drilling hole for electrode in any type of Soil. (b) PCC pit in cement concrete 1:2:4 type B-1, Pre cast RCC cover with suitable handle 40 mm thick in PCC 1:2:4 type B-1, reinforced with welded steel wire fabric weighing not less than1.87 Kg/ Sq meter. (c) Funnel with watering pipe of GI 20 mm nominal bore light grade and lugs etc complete all as specified and directed (d) 15 mm nominal bore medium grade GI protection pipe 5 meter long for protection of earthing lead complete all as specified and directed. (e) Requisite quantity of common salt and charcoal. (f) Testing of earthing.

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 Eng-in-charge

Choice india

AVON ELECTRICALS

Rajindera Enterprises

MV Engineers And Contractors

DS CONSTRUCTION

mayur enterprises

M P TYAGI ENGINEERS AND CONTRACTORS

Vijay Electricals

M/s JAIMAA ASSOCIATES