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6.in a typical structural steel floor or roofing framing, there are three types of elements, called primary, secondary and tertiary elements. explain what these are and what materials they consist of.

Sagot :

Steel is the emaerial used because it is stated that the floor is made of steel. Any material, such as wood, steel, or composite, may be used for roof framing.

Primary elements are the main member in floor system which transfer the load coming on to the element from secondary beam elemnts.The main beams will be joined to the building's columns. The two most common shapes are H and W sections. Secondary elements, which span between principal beams, often accept the slab's weight before passing it on to the primary elemnts. The primary components are joined to the secondary beams for load transfer. Secondary elements are seldom ever employed. If employed, they function as a load transfer system from the slab to the secondary element or as a means of strengthening the floor system to lessen deflection. The top chord and bottom tie members are the main components of roof framing. The weight is transferred from the purlins to the columns or wall via these elements. often have a double-angle or channel section. Tie and the chord member between the top are secondary components.Ther are subjected to compression and tension and transfer forces to the primary elements.

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