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Architects, engineers and builders found it difficult to compare rated capacities and to use fully the economies of steel joist construction. Gable steel joists being erected. Members of the industry began to organize the institute, and in 1928 the first standard specifications were adopted, followed in 1929 by the first load table. The joists ...
Cold-formed steel framing (CFSF) refers specifically to members in light-frame building construction that are made entirely of sheet steel, formed to various shapes at ambient temperatures. The most common shape for CFSF members is a lipped channel, although "Z", "C", tubular, "hat" and other shapes and variations have been used.
The central "web" of the steel I-beam is often wider than a column web to resist the higher bending moments that occur in beams. Wide sheets of steel deck can be used to cover the top of the steel frame as a "form" or corrugated mold, below a thick layer of concrete and steel reinforcing bars. Another popular alternative is a floor of precast ...
A lightweight steel structure is achieved by the use of high strength steels and an efficient framing system. [1] Since this reduces the weight of the superstructure, there is a substantial cost savings in foundation work. [4] Faster to erect than comparable concrete structures.
"50 Divisions" is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the United States and Canada. [5] Standardizing the presentation of such information improves communication among all parties.
Corrosion – Steel, when in contact with water, can corrode, creating a potentially dangerous structure. Measures must be taken in structural steel construction to prevent any lifetime corrosion. The steel can be painted, providing water resistance. Also, the fire resistance material used to envelope steel is commonly water resistant. [11]
Self-framing buildings are within the scope of the National Building Code of Canada (NBCC) as adopted and modified by each Province and Territory. For steel structures, NBCC references CAN/CSA S16 Design of Steel Structures and CAN/CSA S136 North American Specification for the Design of Cold-Formed Steel Structural Members.
The Construction Specifications Institute maintains the following industry standards: MasterFormat – 50 standard divisions of building materials - 2004 edition (current in 2009) 16 Divisions – Original 16 divisions of building materials
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