ADDITION ALTERATION TO BLAST PENS AT AF STATION ADAMPUR ADDITION ALTERATION WORKS ON DESIGN AND BUILD BASIS

Material and labour for design, supply, fabrication, erection, comissioning and testing of factory made Electrically Operated bi- drectional sliding Blast pen door for blast pen no 12 top hung door with De-bouncing system heavy duty flame proof drive assembly, control panel, push button station, limit switches, drag chain system and hand operation arrangement for emergency operation in the event of failure of electrical system including shifting/ transportation from factory, loading, unloading etc. including necessary painting and testing complete all as specified and as shown on drawing. Characteristics & minimum requirement 1. Door Width - 15900mm (to cover blast pen infront of width 15300mm) 2. Door Height -6800 mm 3. Overlapping of leaf- 150mm approx. 4. No of leaf - 04 Nos (2 Left + 2 Right) 5. Size of leaf - 3975 mm (W) x 6800 mm (H) 6. Clear space after opening the door - 15300 mm 7. Door type - Motorized Telescopic Bidireectional Sliding Door 8. Stopper required each leaf - Mechanical stopper at extreme end of each leaf 9. Door frame Top & Bottom - RHS 150x100x5 mm MS Pipe for TOP and SHS 150x150x5 for Bottom. 10. Door Intermediate Structure- RHS 100x50x3 MS Pipe for inner periphery. 11. Door panel - 3 mm thk MS sheet with standard finish shall be off white similar to RAL 9002/Light Blue similar to RAL 5012. 12. Opening direction - Bi-Direction 13. EPDM Rubber- Yes Provided 14. Bottom track- ISMC 150 with 30x30 Sq Bar 15. Top Guide Track - UB which is hot-formed steel in accordance with EN 10025: 20024 or equivalent.

16. No. of track- 2 Nos. 17. No of Motors- 2 Motors per door (1 Motor per 2 leaves). 18. Drive Unit- 415 volts 3 phase and earth, 50 Hz 19. Control Unit- Yes 20. Operation - Telescopic 21. Manual operation in case of motor failure- Hand operation provided. 22. Bottom Wheel - Yes, (200 mm dia), 2 Nos per leaf. 23. Top Wheel (Guided wheel required)- Yes, (Top roller 75 mm dia) 24. Safety and warning device - Audio visual Alarm Anti-collision system, Interlock switches, etc. 25. Surface finish/paint- Pu Paint on MS components One coat of epoxy primer minimum 25-40 microns. Two coat of Polyurethane minimum 60-80 microns.Total coating thickness minimum 100 microns. 26. Weight of the door - Door structure & cladding - 9 Tonnes, Top & Bottom Track- 2.8 Tonnes, Others- 0.4 (This is approx weight of the door) Note : (i) The above sections are only indicative. Nothing extra will be paid to contractor in case of section size and thickness increases in design. However, incase of reduction in size and thickness amount will be recovered through DO. (ii) Contractor will carry out designing and provide architectural and structural drawings required for Electrically Operated bi- drectional sliding hanger door. The detail design and drawings shall be got approved from IIT / NIT and will submit the same to for approval of Accepting Officer. (iii) Quoted rates of contractor should be deemed inclusive of all items required for Electrically Operated bi- drectional sliding blast pen doorand any other misc items required for strengthening of existing columns and no extra payement will be entertained.

Design and Built for retrofitting in existing Columns / structures 05 N0s in each Blast Pen Structurally strengthen restore, stabilize and retrofit 05 Nos existing reinforced concrete columns in each blast pen located along the brickwork traverse/earth retaining walls, while integrating the structural support interface for (CCD) netting. The details of existing columns specified in drawings and DBR. Notes : (a) Contractor has to carryout the retrofitting to existing columns after detailed design / drawings and same shall be got approved from IIT / NIT. Specifications / size / dimensions of exising coloumns have been provided in drawings and DBR. The existing column should be retrofitted in such a manner that they will be able to withstand the loads as per IS 873 Part I to V especially the wind load part III when provided with CCD wire netting and MSN net during Air Storm / Gale Storm as this station is Gale prone area.Removal and reinstallation of existing GI wire net is deemed to be included in the quoted rate. (b) Contractor shall submit the designs, details drawings (architectural and structural drawings) along with analysis retrofitting in existing coloumns and shall be got vetted from IIT / NIT and shall submit the same to the GE for approval of Accepting Officer. (c) Quoted rate of contractor shall be deemed to be inclusive of all items required for retrofitting in existing coloumns and any other misc items required and nothing extra shall be admissible to contractor on this account.

Lump Sum price worked out by the Contractor for "Site clearance, Excavation and earth work " as listed in schedule 'A' Part-II

Lump Sum price worked out by the Contractor for "Design and Build of external structure (RCC / MS frame work) for (CCD ) Netting Works for 08 Nos Blast Pens as listed in schedule 'A' Part-III comprising :- 1. RCC / MS framed work of heavy-duty Reinforced Cement Concrete (RCC) framed structures (footing columns, beams, tie-beams, MS Frame and structural anchors) in Blast Pens alongwith the traverse wall and MS frame work over the mouth of blast pen as per suggestive line plan / Drg attached. (The structure is strictly required to bridge the CCD netting in open area situated between the main Blast Pen structure and its corresponding traverse earth / retaining wall. The primary function of the RCC framed grid / MS framed work is to safely suspend, support, and anchor high-tensile Camouflage, (CCD) netting, ensuring operational security and visual comoflauging against overhead aerial surveillance. ) (a) Qty of Items as listed in Ser No. 1 to 20 of Sch'A'Part-III are provisional. (b) Contractor has to carryout detailed design of Footings, Columns and Beams for CCD in Existing blast pens and layout of GI Wire netting for CCD for providing MSN net for camouflaging. Design shall be done to withstand the load as per IS 873 Part I to V especially the wind load part III when provided with CCD wire netting and MSN net during Air Storm / Gale Storm as this station is Gale prone area. (c) Contractor shall submit the designs, details drawings (architectural and structural drawings) along with analysis of external structure (RCC / MS framed work) for CCD Netting Works and shall be got vetted from IIT / NIT and shall submit the same to GE for approval of Accepting Officer. (c) Quoted rate of contractor shall be deemed to be inclusive of all items required for external structure (RCC/MS frame work) for CCD Netting Works and any other misc items required for complition, nothing extra shall be admissible to the contractor on this account.

Lump Sum price worked out by the Contractor for "Addition/ Alteration Works " as listed in schedule 'A' Part-IV

Lump Sum price worked out by the Contractor for "Internal Electrification " as listed in schedule 'A' Part-V

Lump Sum price worked out by the Contractor for "External Electric Supply " as listed in schedule 'A' Part-VI

Lump Sum price worked out by the Contractor for "Lightening Protection " as listed in schedule 'A' Part-VII

"Camouflage, Concealment, and Deception Netting Works "