isfactory level and reduced the installation procedure from the aforementioned
15 steps to the following eight steps: (1) Measure stud length; (2) put
tape measure in belt; (3) pick up stud; (4) place stud on the cutting table;
(5) line up stud with the measuring tape fixed on the table; (6) cut off stud
to the required length; (7) pick up stud; and (8) put stud in place.
The installation of drywalls was analyzed in a similar manner. It was identified
from the tapes that most of the installation problems were encountered
in placing the top portion of the walls where the drywall sheets had to be cut to fit around the roof trusses. The installation procedure for this work
involved the following: (1) One worker measured the location of the component
parts of the truss rafter where the drywall fitted up against the studs
and met the metal decking; and (2) this worker then called out the measurements
to another worker who placed these measurements on the drywall
and cut according to these marks. This procedure resulted in many misfits
and reworks. To resolve this problem, a template was made to speed up the
cutting operation. The template marked where the drywall passed around the
truss rafters. The use of the template improved the fitting around the trusses,
reduced rework, and minimized the need for wide sealant joints at the interfaces
between the roof trusses and the drywall.