The installation of purlin should be
carried out after the installation of steel
support (TIE), horizontal support and
inter column support, and after the
main body of steel structure is
adjusted.
The purlin clit shall be marked on the
steel section according to the required
size and the purlin clit shall be welded
and fixed according to the line. The
welding position of purlin clit in the
same row shall be in a straight line,
and shall be vertical to the steel beam
(column).
For the roof whose slope is less than
1:12.5, attention should be paid to
eliminate the roof irregularities caused
by steel beam deflection when
installing purlins
The sag rod between purlins plays a
stabilizing role on purlins. During
installation, nuts at each end of purlins
on both sides of purlins should be
tightened to straighten purlins
Welding operations must be carried
out by certified welders.
