81259/E8 PROVN OF FEMS SHELTERS FOR OPS LOCATIONS ON LEH- DRASS AXIS IN WESTERN LADAKH UNDER GE (AF) LEH

LIVING BLOCK Design Supply and Erection Prefabricated Fast Erectable Modular Shelter for Living of size 7.44 Mtr X 5.77 MtrX 3.00mtr as per arch line drawing. The structural design all including of footing and foundation needs to be prepared and also to be vetted from NIT or IIT by the contractor . Certificate from IIT/NIT needs to be in conjunction with codal provns and submitted by the contractor before execution of the work. Structure frame system design with structural steel conforming to IS Code and design as per IS Codal Provns with std worst combination of load as per IS Code prevailing in Leh-Drass axis. The structural frame system should support the structure. The vetted drawing should provide details of Foundation details, Column details, Truss details, Structural Joints and all fixing details required for execution. Design criteria: The structural shall be designed in accordance with relevant IS Provns/NBC code/ extant government guidelines suitable for Leh-Drass axis however, some of design criteria are listed as under: (a) Seismic Co-efficient: As per Seismic Zone IV. (b) Snow load : For min 01 mtr of snow and as per IS codal provn for Leh-Drass axis. (c) Wind load :Equivalent to wind speed of min 65 mtrs/sec or as per relevant IS Provn. (d) Roof slope: as per design requirement. (e) External temperature :(-) 40 degree to (+) 35 degree. (f) Water absorption/Penetration: Nil & adequate sealing material be provided through include Silicon Sealing Gun. (g) Fire resistant (Walls and ceiling): Fire resistant & should not emit toxic fumes. (h) Ease of construction :Shelter should be modular in design. (i) Design load: As per IS 875/Relevant IS provn. (j) Design of fdn as per the structure vetted by the auth as mentioned above. (k) The design of the structure shall be carried out on 10 Ton/m² of soil bearing capacity (SBC). (l) The rate includes transportation upto approx 350 km from Leh toward Leh -Drass axis

Design Data. (a) Length : 7.44 M. (Outer to outer) (b) Width : 5.77 M. (Outer to outer) (c) Shelter Clear Height upto false ceiling :2.70 Mtr up to false ceiling.

Foundation shall be designed by the tenderer and quoted rate is deemed to include the same (Design Cost). All the items i.e. Exavation for foundation, removal/refilling of soil, Reinforcement/RCC work, formwork, structural steel work, bolts, base plate, connections, and erection are deemed to be included in the quoted rate for this item. Quoted rate is also deemed to include necessary vetting of Structure duly signed and stamped from any IIT/NIT of the structural drawing prepared by the approved structural design consultant of tenderer.

Wall: (a) The main and partition PUF insulated panels with inner white colour–coated GI metal skin. The thickness of the PUF panel shall be 80 mm. The Panels will be made using 0.50 mm thick color coated steel sheets on both side with 80 mm thick layer of rigid HCFC, CFC, HFC free modified Polyisocyanurate foam. The PUF insulation material shall be fire-retardant and self-extinguishing; conforming to international standards. There shall be no gap between wall and roof panels. All joints shall be properly sealed and finished with suitable flashing to ensure complete sealing. (b) All materials used for manufacturing the shelter shall be new and shall comply with the relevant Bureau of Indian Standards (BIS). (i). Manufacturing Process: The PUF sandwich panels shall be manufactured by a high pressure injection Process (ii). GI Skin Specification: The outer and inner skins of the panels shall be colour-coated GI sheets of 0.5 mm TCT (Total Coated Thickness). A 50-micron PVC guard film shall be provided on the finished surface only, to protect against scratches during handling. Galvanization shall conform to GR-120 as per IS-277. (iii). PUF Insulated Core Properties: • Density: 40 kg/m³ (±2 kg/m³) • Compressive Strength (at 10% deformation): 1.15 kg/cm² • Tensile Strength: 4.0 kg/cm² • Bending Strength: 4.2 kg/cm² • Adhesion Strength: 3.0 kg/cm² (iv). Dimensional Stability (48 hours): • At –25°C: 0.1% • At +38°C and 90% RH: 0.1% • At +100°C: 0.4% • Closed Cell Content: 90–95% • Operating Temperature Range: –40°C to +35°C • Thermal Conductivity at 10°C: 0.018 kcal/m/hr/°C (v). Design value: 0.020 kcal/m/hr/°C or 0.23 W/m·K (vi). Fire Resistance: * Horizontal extent of burn less than 100 mm as per BS 4735 * Self-extinguishing as per ASTM D1692 * Not easily ignitable as per BS 476 Part 5 (Class I) and BS 476 Part 7 (vii). Water Absorption: 0.20% by volume at 100% relative humidity (c). All sandwich panels shall be provided with suitable tongue and groove, which shall be fixed in place during the on-site process itself. The fixing of the tongue and groove shall be such that 2.7 m long × 1.2 m wide panels can be placed properly. The tongue and groove in the panels for operation shall be provided with PVC caps for sealing after installation. (d). All panels shall be manufactured in single pieces as per the approved panel layout drawing, using the above-mentioned materials and manufacturing process. The Lab Test Report must be duly issued/inspected by a NABL-accredited or Central Government–accredited laboratory and should confirm conformity of all parameters as per the specifications of the store mentioned in the bid documents. (PUFF Panel)

(e) Panel Joining Arrangements: (i) The insulated panels shall be joined with each other using tongue and groove arrangements to ensure complete sealing. The panels shall be fitted on the bottom and top tracks GI sheets, anchored to the concrete plinth. (ii) The Lab Test Report must be duly issued/inspected by a NABL-accredited or Central Government–accredited laboratory and should confirm conformity of all parameters as per the specifications of the store mentioned in the bid documents.

False ceiling panel (False ceiling panel specification same as wall panel): The false ceiling will be made up of 60mm thick. All materials required for the manufacture of shelter shall be new and shall comply with relevant Bureau of Indian Standard specification. False ceiling will be supported with the help of inverted CRCA Tee Section 50 x 50 x 6 mm thick (4.40 Kg/Rm) and L- section of 50 x 50 x 5mm thick (3.80 Kg/Rm) fixed appropriately to the Truss.

Floor Panels: The hybrid core insulated fireproof floor panels of the shelter shall be of 60 mm thick. The panels will be made using 0.50 PPGI skin (RAL — 9002 /9003) at the bottom and 40 mm CFC Free, Nominal Bulk density 40±2 Kg/m³ panel Insulation in between along with 18 mm thick BWR grade plywood on top. The Floor panels will be joined using cam locks & tongue and groove arrangement produced on discontinuous panel production line. These floor panels shall be fixed on MS grid frame as per design vetted by NIT/IIT. If any space is between the MS grid frame and natural ground, it shall be filled with earth and compacted properly. The floor top will be provided with 2 mm thick aluminum chequered profile fixed with suitable counter sunk screws with 2mm thick PVC matt over as directed by Engr-in-charge. Toilet portion (Floor): (a) 50x50mm medium -grade square pipe framework fixed with FEMS mainframe shall be installed at maximum 600mm c/c in both horizontal directions to support min 3mm thick aluminium chequered plates fixed with self-tapping screws, ensuring a rigid, sag-free installation over rammed earth as directed by Engr-in-charge. Notes for Toilet portion flooring : Provn of floor cuttings for sanitary fittings (i.e. IWC, grating doom, floor trap etc) deemed to be included the quoted rate.

Flashing. Suitable flashing with 0.6mm thick pre-coated sheet of matching color with panels will be provided at all joints between roof and wall corners.

Roof: 0.60 mm thick PPGI sheet approved color fixed with self-tapping screws over steel purlins. Steel sheets shall be laid with corrugations over lap at sides and 15 cm end overlap or as per manufacture's instruction. Size 40 X 5mm aluminium wind tie shall be provided at lower and upper horizontal end of each pitch for protection against wind. The Profile of PPGI sheet on roof will project 400mm outside the ends of front and rear side and 300mm at the both gable ends. In addition to self-tapping screws shall also be fixed for roof sheeting. The sheets shall be as per IS. Color of roofing sheet shall be of to match the surrounding camouflage as approved by GE. MAKE: TATA/ SAIL/JSW/Indradhanush.

Chajjas: chajjas with a projection of 1000 mm width to be provided over each windows and door with frame work with 1.2mm thick MS sheet.