mild steel collapse

mild steel collapse - collapse mild steel
Order to secure the roof bajaringan we do ya?
Whether the structure of the roof frame construction using lightweight steel materials safe? Whether the materials actually used to meet design convention building structure? Such questions often terlintas also in mind prospective buyers or prospective users of steel frame roof light. Need to know is, until now there is NOT in the rules about the structure of light steel frame roof. Then, if there is not, what the basis of the mild steel construction that is currently dipasaran flare? Whether their origin pairs only? Let's take the analysis one by one.
Whether the structure of easel frame roof that uses lightweight materials, steel safe? Whether the materials actually used to meet design convention building structure?
Because the profile is very thin mild steel (0.65 s / d 1 mm) and mild steel materials should use high quality steel (high tension steel) G550 (yield strength and tension strength minimum 550 MPA). Material quality lightweight steel profiles G550 can not be proven just by looking at the physical looks alone, the quality of light steel G550 can only be proven through laboratory testing.
Anti-rust coating (coating) are in common use in Indonesia is the layer of AZ (Allumunium and zinc), for example, Galvalume ® or Zincalume ®, and the layer Z (zinc), which is often called Galvanis. Differences in the second layer is as follows: AZ more resistant to the corrosive salt water, but less resistant to mortar or mortar; so vice versa, for the Z layer is less resistant to salt water, but more resistant to mortar or mortar.

tile end of the mild steel
At the closing roof tile ceramic tile or concrete, the peak or ridge usually filled by mortar (top), anti-rust pelapisan so that a suitable and is recommended Zinc layer (Z).
Then, where the most good? type AZ (Allumunium zinc)? Or type Z (zinc)?

ASTM layer of anti-rust steel light
Resilience of anti-rust coating thickness is determined by the anti-rust coating (coating) that is used, NOT the type of! Because the layer thickness (coating) determine the age of anti-rust coating on a mild steel profiles. Standard ASTM (American Standards Testing and Materials) for structural materials (bear the burden) of anti-rust coating thickness (coating) and AZ Z is:
AZ layer thickness ≥ 150 gr / m²
Layer thickness Z ≥ 180 gr / m²
However, because the market view in terms of both the price and content anti-rust coating, in general, companies use a mild steel thickness 100 gr / m² for the AZ layer. With the same quality of steel, anti rust coating thickness can not be proven just by looking at the physical looks alone, but must go through laboratory tests.