PROVISION OF ALUMINIUM PARTITIONS WALL/ CLOSED CHAMBERS AT VARIOUS BUILDINGS AT 5AFH UNDER GE (AF) JORHAT

Supplying and fixing powder-coated aluminium work for doors, windows, ventilators, and partitions (fixed and openable frames) fabricated from extruded architectural tubular and hollow sections of approved make conforming to IS: 733 and IS: 1285 (Alloy 6063, Temper T6), having nominal wall thickness of not less than 1.20mm, minimum thickness of polyester powder coating 50 microns conforming to IS: 13871, cutting to required dimensions, joints cleanly mitred and mechanically locked with aluminium cleat angles and stainless steel (Grade 304) screws/fasteners, fixing frame to masonry/RCC openings using dash fasteners / rawl plugs of required dia and size, sealing perimeter gaps all around with approved neutral weather silicone sealant over EPDM/neoprene backing rod, and providing aluminium snap beading with EPDM gaskets for fixing glazing/panelling, complete all as specified and as directed.

Supplying and fixing powder-coated aluminium door shutters (openable / swing type) fabricated out of extruded tubular and hollow sections of approved make conforming to IS: 733 and IS: 1285 (Alloy 6063, Temper T6), minimum thickness of polyester powder coating 50 microns conforming to IS: 13871, having vertical styles, top rail, lock rail, and bottom rail of standard sections, mitred and mechanically jointed with concealed aluminium cleat angles and stainless steel (Grade 304) screws, including powder-coated aluminium snap beading, EPDM rubber / neoprene weather gaskets, fixing clips, and hung with heavy-duty aluminium hinges / pivot assemblies (3 Nos per leaf), 2 Nos approved powder-coated / anodised aluminium bow handles (minimum 150 mm length) per door leaf, and necessary stainless steel fasteners, complete all as specified and as directed. Notes: (i) The nominal section weight of 0.55 kg/m is applicable only for light intermediate glazing beads or minor partition sash bars. Standard door shutter profiles (vertical styles, top, lock, and kick/bottom rails of 45 mm or 50 mm series) typically range from 0.95 kg/m to 1.80 kg/m (wall thickness ≥ 1.50mm to 2.00mm) to support the structural weight of glass, hardware, and dynamic cyclic movement. (ii) Glass panes (float / toughened glass) and/or bottom infill panel boards (pre-laminated sheet, compact laminate, or ACP) are not included in this item and shall be measured and paid for under their respective separate items of BoQ. Supplying and fixing snap beadings, EPDM rubber packing, and glazing clips required to secure the pane/panel are deemed included in quoted rate. (iii) All snap beadings and visible hardware accessories must match the shutter finish (powder-coated minimum 50 microns) to prevent galvanic and aesthetic mismatch with anodised trims.

Supplying and fixing 12 mm thick pre-laminated flat pressed three-layer particle board (Grade-I, Type-II, Exterior Grade) conforming to IS: 3087 and IS: 12823, laminated on both sides with decorative lamination of approved shade and finish, cut to required sizes and shapes, fixed in aluminium door shutters, windows, ventilators, or partition frames with necessary screws, cleats, and edge sealing/beading, including preparing cut edges with moisture-resistant sealant/primer, complete all as specified and as directed. Notes: (i) The unit rate for this item is per Square Metre finished visible area between the inner rebate lines of the aluminium members. No extra allowance shall be made for the concealed margins housed inside the aluminium rebate/groove, nor shall any deduction be made for minor notching or edge clearance. Wastage in cutting from standard commercial sheet sizes (2.44m x 1.22m/ 8ft x 4ft) is deemed covered in the quoted rate. (ii) Aluminium framing sections, snap beadings, EPDM rubber gaskets, and glazing/panelling clips are not included in this item and are deemed covered under the respective framework or door shutter items of BoQ. Only the supply, cutting, edge sealing, inserting, and securing of the board panel itself shall be payable under this item. (iii) All sawn/cut edges of the board before insertion into the aluminium frame rebate shall be sealed with approved moisture-resistant wax, primer, or polyurethane sealer to prevent core swelling and delamination due to ambient humidity or washing.

Supplying and fixing 5.0 mm (nominal thickness / 4.8 mm to 5.2 mm actual) clear float glass / sheet glass, Selected Glazing (SG) quality conforming to IS: 2835 / IS: 14900, in panes of doors, windows, ventilators, and partitions exceeding 0.50 Sqm each in area, cut to exact size and shape with clean, straight arrised edges, bedded and fixed in aluminium frames/shutters with EPDM rubber gaskets / neoprene packing and aluminium snap beading or approved neutral silicone sealant (snap beading and gaskets measured with framework/shutters unless otherwise specified), including necessary setting blocks and spacer shims, complete all as specified and as directed. Notes: (i) Commercially supplied glass designated as 5 mm nominal thickness has an allowable manufacturing tolerance range of 4.8mm to 5.2mm (12 to 12.5 kg/sqm weight) conforming to Selected Glazing (SG) / Ordinary Glazing (OG) quality conforming to IS: 14900. (ii) The unit of measurement for this item is per Square Metre (Sqm) clear visible area between the sight lines of the glazing rebate (or net area of the pane measured up to the rebate depth as per standard MES trade practice). No allowance shall be made for cutting wastage, perimeter clearances, or irregular shapes. The pane size classification (exceeding 0.50 Sqm in each pane) shall be verified individually for each leaf/opening. (iii) Setting blocks (neoprene/lead blocks of required hardness to support the dead weight of the glass) are deemed included in the quoted rate. The perimeter aluminium snap beading, main EPDM rubber channels, and screws belong to the respective aluminium framing / shutter items shall be measured and paid separately.

Supplying and fixing hydraulically regulated door closer (surface mounted, rack and pinion type), aluminium extruded/die-cast body, heavy-duty, Designation No. 3 (EN Size 3/4), universal type (suitable for both right-hand and left-hand openable doors without alteration), conforming to IS: 3564, suitable for door shutters having leaf width from 851 mm to 1000 mm and shutter weight between 61 kg and 80 kg, equipped with independent twin-valve adjustments for controlling closing speed and latching speed, complete with standard/parallel arm assembly, mounting bracket, stainless steel / high-tensile machine screws, and template, fixed to aluminium/timber/steel door shutter and frame, complete all as specified and as directed. Notes: (i) The quoted rate includes the complete mechanism (hydraulic body, arm assembly, pivot shoes, and fixing brackets), drilling/tapping holes in door rails/frames, and precision site adjustment of sweeping and latching speeds. (ii) Where the door closer is fixed to hollow powder-coated aluminium door sections, fixing screws shall engage either a pre-inserted aluminium/steel reinforcement backing plate (minimum 3mm thickness) inside the aluminium shutter profile or heavy-duty self-threading blind rivet nuts (rivnuts) to prevent screws pulling out under hydraulic door resistance. Screwing directly into thin single-wall aluminium (< 1.5mm) without backing is strictly prohibited. (iii) The door closer shall carry the standard BIS certification mark (ISI marked conforming to IS: 3564) and cycle-tested for a minimum of 500,000 operational cycles without leakage of hydraulic fluid. Approved makes: Dorma (Dormakaba)/ Godrej/ Ozone/ Hardwyn/ Hafele.

Supplying and fixing aluminium alloy sliding door bolt (aldrop) of nominal size 300 mm long, bolt type, conforming to IS: 2681, fabricated out of extruded or cast aluminium alloy sections (Alloy IS Designation 737 / 733 / 6063), transparent/satin anodised (minimum anodic coating thickness 15 microns conforming to IS: 1868, Grade AC-15), comprising sliding bolt of not less than 16 mm diameter (solid) or equivalent heavy-duty extruded hollow section, complete with hasp, bolt-type staple, necessary fixing clips/hasps of cast or extruded section, stop pin, and fitted with necessary counter-sunk stainless steel (Grade 304) screws / aluminium fixing bolts and nuts, complete all as specified and as directed.

Supplying and fixing aluminium alloy barrel tower bolt, size 200 mm long, conforming to IS: 204 (Part 2), fabricated from extruded aluminium sections (Alloy IS Designation 733 / 6063), transparent/satin anodised (minimum anodic coating thickness 15 microns conforming to IS: 1868, Grade AC-15), with bolt rod not less than 10 mm / 12 mm diameter, extruded barrel plate of minimum thickness 1.50 mm, complete with matching extruded aluminium strike plate/receiver, stop knob, and fixed with counter-sunk stainless steel (Grade 304) screws / aluminium rivets, complete all as specified and as directed.

Supplying and fixing floor-mounted door stopper of nominal length 140 mm, comprising cast/extruded aluminium alloy body and tongue conforming to IS: 2684, transparent/satin anodised (minimum anodic coating thickness 15 microns conforming to IS: 1868, Grade AC-15), fitted with high-tensile hard-drawn patented steel wire spring, resilient vulcanised neoprene / EPDM rubber buffer pad/cushion, complete with matching aluminium strike catch plate and anchor bolt / brass rawl plugs with counter-sunk stainless steel (Grade 304) machine screws, grouted and firmly fixed into concrete / tiled / stone floor, complete all as specified and as directed.

Supplying and fixing heavy-duty, double-action hydraulically regulated floor spring conforming to IS: 6315, comprising a heavy-duty close-grain cast iron body housed in a corrosion-resistant foundation box fabricated from minimum 1.25 mm thick stainless steel / zinc-coated mild steel sheet (or aluminium alloy sheet where specified), stainless steel (Grade 304) satin-finished cover plate, forged/hardened steel governing pivot spindle, top pivot assembly with brass/bronze bush and adjustable steel pivot pin, complete with mechanical components, dual independent regulating valves for closing and latching speeds, hold-open / non-hold-open mechanism as indicated, cement mortar (1:2) or approved non-shrink epoxy grout for securing the foundation box in the floor, and necessary high-tensile fasteners, complete all as specified and as directed.

Taking down / dismantling old wood, steel, or aluminium chowkat (frames) along with shutters hung therein (without taking off shutters from the frame), clear opening area not exceeding 1.50 Sqm each, carefully removing holdfasts, dash fasteners, or anchor lugs from walls/RCC without damaging adjoining masonry, plaster, or reveal edges, sorting serviceable materials and stacking neatly at MES stores / site yard as directed, and removing unserviceable rubbish/debris to outside AF station land or designated dumping ground up to a lead not exceeding 50 metres, complete all as specified and as directed.