138WE/L-125/2026-27

Design & Construction of Factory Made precast RCC Bunker (Modular structure) to be placed underground as shown on drawing having 6000 x 3500 x 2500 mm (Internal dimensions) including loading, transportation, unloading, lifting and placing in position, flooring tiles, adequate luminaries complete including restoration of disturbed surfaces. The unit rate quoted against this item shall deemed to include the followings :- (i) Ascertaining / testing of SBC at requisite site of construction. (ii) Submission of Design & drawing of bunker duly vetted by IIT including structural analysis, M-50 design mix before commencement of pre-casting and execution work. The unit rates shall deemed to include all this aspects. (iii) The contractor shall remain responsible for structural adequacy, stability, quality and conformity of the bunker with approved design and contractual requirement, notwithstanding deptt approval. (iv) The unit rate quoted against this item shall be for a single consolidated rate per bunker complete. No separate payment shall be admissible for any component or incidental work included in the BOQ discerption. (v) Precast bunker shall be constructed of M-50 design mix concrete as per IS : 10262. Test certificate shall be submitted by the contractor before installation.

(vi) Pre-cast bunker shall be casted / constructed at factory / fabrication plant of contractor. (vii) The contractor shall have or shift factory / plant within 200 Km of site of work. The tenderers shall submit the present location alongwith complete address of their plant and furnish an undertaking that immediately after acceptance of tender, they shall shift their plant within 200 Km, in case existing beyond. (viii) The bunker units alongwith its accessary if any shall be transported at site of work using appropriate load carrying vehicle machinery by the contractor. Any damage during transportation shall be borne by the contractor. (ix) The contractor shall submit schedule of casting concrete at least 07 days prior so that concerned GE, Engineer-in-Charge & JE can plan their visit for supervision of work accordingly.

(x) The unit rates quoted against this item shall include transportation of the bunker, necessary earthwork, concrete work, PCC in foundation as per approved design, hard core as per design, returning filling, removal of surplus earth, filling of earth over bunker allied ancillary works, internal finishes, internal electrification work including exhaust fan complete. (xi) The unit rate quoted against this item shall deemed to include provision of door opening and any other misc ventilation openings as per design approved. (xii) This unit quoted against this item shall also deemed to include construction of PCC block stair case covered with Mild Steel work as approved by GE and as shown in working drawing attached with tender documents. (xiii) The design of bunker shall show and mention type of jointing material required to join / connect each part of bunker (water proofing aspects of joining material / compounds) including water proofing to be carried out on roof and side walls of RCC bunker and shall submit test certificate.

(xiv) The design to be submitted by the contractor shall clearly indicate type of water proofing treatment to the bunker. (xv) Earth filling to a depth of 600 mm shall be done over the top slab level of the bunker. (xvi) The drawings / design to be submitted by the contractor shall have marking of all electrical fitting and the quoted rate shall deemed to include these aspects. (xvii) The top of RCC precast bunker (excluding external earth filling on top) shall be 600 mm below normal ground level well compacted on top of bunker merging with surrounding earth. (xviii) The thickness of walls (sides, bottom & top) of bunker shall be as per design submitted, got vetted and approved, however minimum wall thickness shall not be less than 350mm. (xix) Water proofing test shall be done after application of water proofing material of all sides and roof. Any leakage noticed shall be rectified by the contractor at his own cost. The contractor shall submit a guarantee for period of 10 years and security deposit @ 2.5 % of the total cost of quoted against this item otherwise the same shall be recovered from the contractor’s dues towards the Govt. Make of water proofing materials shall be Dr Fixit, FOSROC, ROFF, Asian Paints, SIKA

(xxi) Door as shown on drawing shall be of sixe 1000 x 2100 mm mild steel having frame made out of angle iron, minimum size 50x50x6mm and mild steel sheeting minimum 6mm thick including door fittings as approved by GE. Note :- (i) The tenderers are requested to visit the site of work before quoting their rates. (ii) The minimum soil bearing capacity of the surrounding area is 10 Kg/Sqcm. (iii) The drawing attached with the tender documents shall be for guidance purpose only. However the work shall be got executed based on approved design and drawings duly vettted by IIT. Location : Fire Direction Centre in Chushul

All as per serial item No 01 here-in-before but location : Field Hospital at Durbuk / Tangtse

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All as per serial item No 01 here-in-before but location : 114 Inf Bde at Durbuk / Tangtse

All as per serial item No 01 here-in-before but location : HQ 255 RUDRS Bde at Durbuk / Tangtse