procedure of fabrication used in civil construction
Answers
Explanation:
Fabrication Processes
Mill material is cut to length by sawing, shearing, or flame cutting. Columns may also be milled to their final length. Holes for fasteners are drilled or punched. Punched and reamed holes are seldom used in building construction.
Explanation:
Structural steel fabrication can be carried out in shop or at the construction site.
Fabrication of steelwork carried out in shops is precise and of assured quality, whereas
field fabrication is comparatively of inferior in quality. In India construction site
fabrication is most common even in large projects due to inexpensive field labour, high
cost of transportation, difficulty in the transportation of large members, higher excise
duty on products from shop. Beneficial taxation for site work is a major financial
incentive for site fabrication. The methods followed in site fabrication are similar but the
level of sophistication of equipment at site and environmental control would be usually
less. The skill of personnel at site also tends to be inferior and hence the quality of
finished product tends to be relatively inferior. However, shop fabrication is efficient in
terms of cost, time and quality.
Structural steel passes through various operations during the course of its fabrication.
Generally, the sequence of activities in fabricating shops is as shown in Table1. The
sequence and importance of shop operations will vary depending on the type of
fabrication required. All these activities are explained briefly in the subsequent parts of
the section