Columns and Rafters are the main components of Pre-Engineered Building (PEB). They are made of Built-Up Sections from steel plates which are Designed and Engineered at Factory. The steel used in manufacturing these Columns and Rafters conforms to ASTM-A-572 GRADE 50 with a minimum yield strength of 345 MPa.
Other Primary Members of Steel Building include Intermediate Frames, End Wall Frames, Wind Bracings, Crane Beams, Mezzanine Beams and Joists.
ANCHOR BOLTS AND TEMPLATES
The Project starts with Anchor Bolt Reaction / Load Reactions details prepared by 7SYSTEMS PEB. Based on this reaction data, Civil Structural Consultant designs the RCC foundation to withstand required Loads of Steel Building.
Steel Building Supplier design, manufacture and supply Anchor Bolts and Templates. Templates are required to cast Anchor Bolts accurately on civil foundations. Templates help in accurate positioning of bolts into civil column foundations/column heads made of concrete. Anchor bolts are fixed through the template holes with nuts and washers.
SECONDARY MEMBERS – PURLINS, GIRTS AND EAVE
Cold formed ‘Z’ and ‘C’ shaped members may be used as secondary structural elements to fasten and support the external cladding.
Cold-Formed Roof Purlins, Wall Girts, Eave Struts – All the members having section sizes varying from 150mm to 300mm depth are made from 120 GSM to 275 GSM GI coils confirming to ASTM-A-653 GRADE 50 or equivalent to yield strength of 345 MPA. ‘C’ and ‘Z’ Section Purlins, Girts, Struts are available in thickness ranging from 1.5mm to 3.0mm.
ROOF AND WALL CLADDING:
Roof & Wall Panels could be Bare (Without Color Coating) or Color Coated. Basic Material could be PPGL (Pre Painted Galvalume) or PPGI (Pre Painted Galvanized Iron) but apart from Color Coating, there are several aspects to be looked carefully.
SIDE /ROOF CLADDING: It is made up of color coated profiled sheets as per BMT standards.
Yield Strength – 550MPA
Coating 150 GSM
Type of coating – PPGL
SKY LIGHT: These are profiled to match roof cladding and for exact packing.