Adjustable steel column is a steel post that is designed
to connect mechanically to roof to support it. The post supports a system of
beams to provide additional stiffness that are required to withstand
earthquake, wind loads or other sources of lateral displacement loads. The
posts are usually hollow and an adjustable mechanism is attached to each post through
providing threads. The adjustable system facilitates to adjust the column
height when required.
These columns are normally provided in basement. This
column can be assembled as a single-piece or multiple-parts depending on the
manufacturer’s production sizes and facilities.
Some requirements for adjustable steel columns according
to International Residential Code (IRC):
1. The post diameter should not be less than 75 mm irrespective of structural design to support the loads. Both structural design and IRC minimum requirement have to satisfy in determining post diameter.
The post must be
protected by corrosion-inhibitive paint. The both outer and inner surfaces of
steel column have to paint with corrosion-inhibitive paint. If steel is treated
with corrosion resistant coating or corrosion-resistant steel are used this
requirement does not bear any importance.
