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TRIMDEK® 1015

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LYSAGHT TRIMDEK® 1015 is a subtle square fluted steel cladding. The fluting in the pans provides strength and long spanning capabilities. LYSAGHT TRIMDEK® 1015 is available in long lengths, therefore on most projects you can have one sheet from ridge to gutter without end laps. LYSAGHT TRIMDEK® 1015 is made of high strength steel and despite its lightness, provides excellent spanning capacity and remarkable recovery after deformation. The strength, spanning ability, lightness and rigidity of LYSAGHT TRIMDEK® 1015 permits wide support spacing to be used with safety (Refer to maximum support spacings table). Simple, Low Cost Fixing Long, straight lengths of LYSAGHT TRIMDEK® 1015 can be lowered into place and aligned easily. Fixing with hexagon headed screws is simple and fast. Profile LYSAGHT TRIMDEK® 1015 is 1015 mm wide coverage profile with nominal 28.5 mm deep ribs. The end ribs are designed for anti-capillary action, to avoid any seepage of water through the lateral overlap. (Please refer fig. 1)	Material Specification LYSAGHT TRIMDEK® 1015 is manufactured out of high strength steel. The coated steel is ZINCALUME® steel, which is a zincaluminium alloy coated steel complying with AS 1397, G550, AZ150 (550 MPa minimum yield stress, 150 g/m2 minimum coating mass) or COLORBOND® steel, a pre-painted steel conforming to AS/NZS 2728 Type 3-4. (Please refer to ZINCALUME® steel and COLORBOND® steel brochure for details) Lengths Sheets are supplied custom cut. Tolerances Length: + 0 mm, – 15 mm Width: + 4 mm, – 4 mm


Maximum Support Spacing (in Millimetres) The maximum recommended support spacings are based on tests conducted 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 consider resistance to wind pressure only. The pressure considered (in accordance with IS 875.3) is based on buildings up to 10 m high, Zone 3 (Basic wind speed Vb = 47 m/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.	LYSAGHT TRIMDEK® 1015 offers full benefits of the latest methods for modelling wind pressures. The wind pressure capacity table is determined by full scale tests 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 thickness, seek advice from your nearest Tata BlueScope Building Products office.



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. Adverse Conditions If this product is to be used in marine, severe industrial or unusually corrosive environments, ask for 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 these 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 top portion 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: do not drag materials over rough surfaces or each other, carry tools, do not drag them and protect it from swarf. Sealed Joints For sealed joints, use screws or rivets and neutral-cure silicone sealant branded as suitable for use with ZINCALUME® steel and COLORBOND® steel. 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.

Installation Fastening Sheets to Supports LYSAGHT TRIMDEK® 1015 is pierce-fixed to timber or steel supports. This means that fastener screws pass through the sheeting. You can place screws through the crests or in the valleys. To maximise water tightness, always place roof screws through the crests. For walling, you may use either crest or valley fixing. Always drive the screws perpendicular to the sheeting and in the centre of the corrugation or rib. Don’t place fasteners less than 25 mm from the ends of sheets. All the fasteners shall conform to Australian Standard AS3566 Class 3-4 (min.) for external application. End Lapping End-laps are not usually necessary because TRIMDEK® 1015 is available in long lengths. 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. Side-Laps The edge of TRIMDEK® 1015 with the anti-capillary groove is always the underlap (Please refer fig. 2). It is generally considered good practice to use fasteners along side-laps.	However, when cladding is supported as indicated in maximum support spacings, side-lap fasteners are not usually needed for strength. Ends of Sheets It is usual to allow roof sheets to overlap into gutters by about 50 mm. If the roof pitch is less than 25o or extreme weather is expected, the valleys of sheets should be turned down at lower ends and turned-up at upper ends by about 80o. Lay Sheets toward 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. To align the first bullnosed sheet, use a level on the gutterend. Sheet-Ends on Low Slopes When TRIMDEK® 1015 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.

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