density of gi sheet are distributed into various kinds on the basis of their shapes, sizes and dimensions. Sheet metal gauges used in ductwork Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! 2 Typical BHP metal roof sheet system 0.01 0.01 0.01 0.01 3 Low E facing Upper Air Gap (16.7mm)* 0.62 0.62 4 Air Bubbles heat resistance contribution 0.10 0.20 5 Low E facing lower Air Gap 1.44 1.77 6 Glass Wool Estimated effective thermal resistance 1.49 7 Internal air film (fixed) 0.16 0.16 0.16 0.16 R (Thermal Resistance); m2.k/W Galvanised Coils. It is possible to increase the zinc coating thickness in order to increase the service life (durability) of the CGI sheets. GI Pipes Weight calculation formula=[(outside - wall thickness) * wall thickness] * 0.0246615 * 1.06 = kg/meter (weight per meter) Galvanized steel pipe with hot-dip or galvanized zinc layer of welded steel pipe. Allowable loads may be multiplied by a factor of 0.80 for sheets spanning over 2 or 3 supports. For other thicknesses, equivalence is provided in Annex 1 of the, SHEET, IRON, FACIA CAP, galva. The density of galvanized steel is the weighted average of the mild steel density (7.87 gr/cc) and the density of the zinc coating (7.13 gr/cc). Thickness is an important factor for strength and durability. Read about company. 0.4 mm (30 gauge) can be used for shelters when the wind speed is lower than 200 km/h, the distance between laths/battens/purlins is 0.60 m maximum and the area is not prone to snow. Gauge (or gage) sizes are numbers that indicate the thickness of a piece of sheet metal, with a higher number referring to a thinner sheet. Example: if the roof slope measures 2.32 m, then the length of the CGI sheet should be 2.37 m (2.32 + 0.05 m). The GI Steel Sheets that we offer to our clients are manufactured using high quality materials. Roofing and … Aluminium coating can be an alternative in very high corrosive environments (marine environment). Shear Connectors / Ribs are optional. Sheet Metal Gauges and Weights. The quantity of roofing nails depends on the wind speed, location of the shelter and thickness of the laths/battens/purlins used. The zinc coating thickness can be verified using a coating thickness gauge or magnetometer (EMEAMEASGC01), which measures the thickness of the zinc coating applied to the CGI sheet. For a more accurate result, you can verify the appropriate CGI sheet thickness for your shelter design using the Roof Estimate Form (Excel spreadsheet) provided with the CGI sheet roof covering manual. Depends on thickness of the zinc coating. gi coil sheet-shandong hui qian jia steel plate co.,ltd SHANDONG HUI QIAN JIA STEEL PLATE CO.,LTD TEL:+86 0543-2777888 E-mail: Mike @hqjsteel.cn Diana@hqjsteel.cn In the manufacturing industry (including both metal stamping, and metal spinning) galvanized commonly refers to galvanized steel. It is intended to guide users with pre-budgeting information. Size: GI Coil/Sheet - 0.12-1.5mm x750~1250mm usable width, 0.92m total width with 0.80m usable width, 0.84m total width with 0.72m usable width. The galvanization method used must be hot-dip galvanization as it better ensures the durability of the CGI sheets. Gague are used to specify the thickness of a metal sheet. A 20 µm coat of zinc should be applied per side of the CGI sheet (total of 40µm for both sides of the CGI sheet equivalent to 275g/m²). This way you may avoid disappointments. Material Group Alloy* Density (g/cm3) MIM-2200 Low Alloy & Alloy Steels (Fe-2%Ni) 7.60 as-sintered Other metal and alloys such as aluminium-zinc and aluminium can also be used to protect the steel sheet from corrosion. Depends on the wind, the roof pitch, and if the length of the roof slope takes one or several CGI sheets (see the tables below). These sheets and plates are available in different dimensions and material to … Suggested materials to accompany the CGI sheets: Some specifications may vary from national standards and local market conditions. CGI sheets are protected from corrosion by a zinc coating applied to the steel sheet. Difference between GI and MS. SHEETS GUAGE THICKNESS IN mm WEIGHT PER SQ. Total quantity of CGI sheets to order must include the overlapping of each sheet with the next one which can be 5 to 26% of the surface to cover: Percentage of overlapping if one CGI sheet for the entire roof slope: Percentage of overlapping if several CGI sheets for the entire roof slope: To have a good approximation of the quantity of CGI sheets needed to cover a gable roof (pitch = 20°, wind speed > 150 km/h), you need to: Formula to determine the number of CGI sheets needed to cover the roof slope, N = S / (surface of CGI sheet x (1 - % overlapping)), surface of CGI sheet = total width x length of CGI sheet, % overlapping = percentage indicated in table above, It is recommended to include a 10% loss to ensure that you will have enough CGI sheets to cover the roof. Sector and for permanent shuttering only North America and belongs to the ground without wetting the roof frame must modified. 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