Public Works Department Tender

Providing and Fixing Armstrong or equivalent Channeled Wood works perforated panels of width 192mm, thickness of 15mm length 2400mm of as required by the Architect/Engineer-in-charge, made of Moisture Resistant fibre board with minimum 595 Kg/M3 density substrate with a laminate facing as per the approved shade & finish and a melamine balancing layer on the reverse side. The boards shall have a special perforation pattern where the visible surface has a "Helmholtz" fluted perforation of 3mm width and 21mm of visible panel each. The edges of the panels shall be 'Tongue-and-grooved" to receive special clips for installation. The back of the perforated panel shall have sound absorbing non-woven acoustical fleece having NRC of 0.52. The panels shall be mounted on special aluminium splines using clips provided by Armstrong and approved by the Architect/Engineer-in-charge.

Installation: The installation work includes Fixing of Aluminium etruded channels of section 20x15mm as approved by the Architect on the solid wall horizontally using screws and plugs at spacing of 600mm centre-incentre. Screw the aluminium extruded keel for channelled works provided by manufacture over the lowest and second at an on-centre distance of 600mm. Placing the inside clip on the groove end of the panel along the Al keel and then place the tongue end of the next panel. Continue installing rows of panels by inserting the tongue into the groove of the earlier inserted panel and progressively installing inside clips wooden moulding of matching colour. Installation to be carried out by manufacture Trained Installation team & Installation should be carried out as per manufacture recommended procedure and pattern decided by Engineer-in-charge.

Providing and Fixing Aluminium composite panel of approved make 3mm thick with 0.5mm thick skin & PVDF coated approved shade for wall panelling. Main framing work to be done using 50mmx25mmx1.6mm tubular section of approved make. Stainless steel screw to be used to fix the ACP panel to be fixed to the main frame with industrial adhesive tape and panel groove to be sealed with weather proof silicon sealant suitable for glass/aluminium etc. complete in all respect as approved by Engineer-in-charge.