Primary frames are designed in accordance with the steel construction manual published by American Institute of Steel Construction (AISC). Manufacturing dimensional tolerances are in accordance with the requirements of ‘Metal Building Manufactures Association’ (MBMA) of USA, “Low Rise Building Systems Manual”. Besides AISC and MBMA, we also design buildings
with IS-875, 1984 and IS-875, 2007.
Built-up sections are fabricated from hot rolled steel plates confirming to ASTM A 572M grade or equivalent with minimum yield strength of 345N/mm2 (50ksi).
The most common primary framing systems are illustrated here. All structures shown are symmetrical about the ridgeline. Framing systems unsymmetrical about the ridgeline and Multispan Framing Systems with unequal width modules are possible too.Practically any frame geometry can be erected.