Tele 079-26463307
Fax: 079-26462658
702, Addor Ambition,
Nr Vimal House,
Navarang School-Lakhudi Talavadi Road,
Navarangpura, Ahmedabad - 380009
|
LYSAGHT SPANDEK® 935 is a contemporary looking, trapezoidal profile which is ideal where a stronger, bolder, more modern appearance is required. SPANDEK® 935 was originally designed as a strong attractive roofing material for industrial and commercial construction, however SPANDEK® 935 has proved equally popular for homes and public buildings, underlining its versatility and pleasing appearance. SPANDEK® 935 combines strength with lightness, rigidity and economy. Simple, low-cost fixing Long, straight lengths of SPANDEK® 935 can be lowered into place and aligned easily. Fixing with hexagon headed screws is simple and fast. 
|
Material SpecificationsHigh Strength Steel base |
|
|
 |
|
|
Walking on roofs Generally, keep your weight evenly distributed over the soles of both feet to avoid concentrating your weight on either heels or toes. Always wear smooth soft-soled shoes; avoid ribbed soles that pick up and hold small stones, swarf and other objects. Maximum support spacings The maximum recommended support spacings are based on testing in accordance with AS1562.1-1992, AS4040.1-1992 and AS4040.2-1992. Roof spans consider both resistance to wind pressure and light roof traffic (traffic arising from incidental maintenance). Wall Spans considers resistance to wind pressure only. The pressure considered (in accordance with IS 875.3) is based on buildings up to 10m high, Zone 3 (Basic wind speed Vb = 47m/s), Class A, Terrain category 3, K1 = 1.0, K2 = 0.91, K3 = 1.0, with the following assumptions made; Roofs: Cpe = – 1.20 (internal cladding spans) Cpe = – 2.0 (single and end cladding spans) Cpi = + 0.2 Walls: Cpe = – 0.80 (internal cladding spans) Cpe = – 1.20 (single and end cladding spans) Cpi = + 0.2 These spacings may vary for particular projects, depending on specific structure characteristics. 
|
Maximum roof lengths for drainage measured from ridge to gutter (m) Penetrations will alter the flow of water on a roof. For assistance in design of roofs with penetrations, please seek advice from your nearest Tata BlueScope Building Products office.  Limit states wind pressures SPANDEK® 935 offers the full benefits of the latest methods for modeling wind pressures. The Wind pressure capacity table is determined by full-scale test’s conducted at BlueScope Steel’s NATA-registered testing laboratory, using the direct pressure-testing rig. Testing was conducted in accordance with AS 1562.1-1992 Design and installation of sheet roof and wall cladding-Metal, and AS 4040.2-1992 Resistance to Wind Pressures for Noncyclonic Regions. The pressure capacities for serviceability are based on a deflection limit of (span/120) + (maximum fastener pitch/30). The pressure capacities for strength have been determined by testing the cladding to failure (ultimate capacity). These pressures are applicable when the cladding is fixed to a minimum of 1.0 mm, G550 steel. For material less than 1.0 mm thick, seek advice from your nearest Tata BlueScope Building Products office. Metal & timber compatibility Lead, copper, bare steel and green or some chemically treated timbers are not compatible with this product; thus don’t allow any contact of the product with those materials, nor discharge of rainwater from them onto the product. If there are doubts about the compatibility of products being used, ask for advice from your nearest Tata BlueScope Building Products office. |
|
|
 |
|
|
Maintenance Optimum product life will be achieved if all external surfaces are washed regularly. Areas not cleaned by natural rainfall (such as the tops of walls sheltered by eaves) should be washed down every six months.  Storage and handling Keep the product dry and clear of the ground. If stacked or bundled product becomes wet, separate it, wipe it with a clean cloth and stack it to dry thoroughly. Handle materials carefully to avoid damage: don’t drag materials over rough surfaces or each other; carry tools, don’t drag them; protect from swarf. Cutting For cutting thin metal on site, we recommend a circular |
saw with a metal-cutting blade because it produces fewer damaging hot metal particles and leaves less resultant burr than a carborundum disc. Cut materials over the ground and not over other materials. Sweep all metallic swarf and other debris from roof areas and gutters at the end of each day and at the completion of the installation. Failure to do so can lead to surface staining when the metal particles rust. Non-cyclonic areas The information in this brochure is suitable for use only in areas where a tropical cyclone is unlikely to occur. Ask for advice from your nearest Tata BlueScope Building Products office on designs to be used in cyclonic areas. 
|
|
|
InstallationFastening sheets to supports |
If you want end-laps, seek advice from your nearest Tata BlueScope Building Products office on the sequence of laying and the amount of overlap. Ends of sheets It is usual to allow roof she ets to overlap into gutters by about 50 mm. If the roof pitch is less than 250 or extreme weather is expected, the valleys of sheets should be turned down at lower ends, and turned-up at upper ends by about 800. Laying procedure For maximum weather-tightness, start laying sheets from the end of the building that will be in the lee of the worst anticipated or prevailing weather. It is much easier and safer to turn sheets on the ground than up on the roof. Before lifting sheets on to the roof, check that they are the correct way up and the overlapping side is towards the edge of the roof from which installation will start. Place bundles of sheets over or near firm supports, not at mid span of roof members. Sheet-ends on low slopes When SPANDEK® 935 is laid on slopes of 5 degrees or less, cut back the corner of the under-sheet, at the downhill end of the sheet, to block capillary action. (Please refer fig. 2) |
|
|
|
|
