Figure 9-1.Two 20- by 48-foot rigid-frame, preengineered buildings erected end to end.
In addition to the usual reasons for stressing the
importance of a square and level foundation, there is
another reason peculiar to the erection of a pre-
fabricated structure. Prefabricated parts are designed
to fit together without forcing. If the foundation is
even slightly out of square or not perfectly level, many
of the parts will not fit together as designed.
Continuously check the alignment of the anchor bolts
prior to, during, and after concrete is poured.
A lot of preliminary work is necessary before the
erection of a PEB can begin. After the building site is
selected, prepare to pour the foundation and slab.
Before concrete for the foundation piers can be
poured, templates for the anchor bolts are placed on the
forms, and anchor bolts are inserted in the holes. The
threads of the bolts are greased and nuts are placed on
them to protect the threads from the concrete. After a
last-minute check to ensure all forms are level and the
anchor bolts are properly aligned, concrete is placed in
the forms and carefully worked around the bolts so they
remain vertical and true.
While the foundation is being prepared, other crew-
members are assigned various kinds of preliminary
work. This work includes uncrating material and inven-
tory, bolting up rigid-frame assemblies, assembling
door leaves, and glazing windows. When all prelimin-
ary work is properly completed, assembly and erection
of the entire building are quicker and you have fewer
All materials, except paneling, should be uncrated
and laid out in an orderly manner so parts can be easily
found. Dont uncrate paneling until it is ready to install.
When the crates are opened, dont damage the lumber;
you can use it for scaffolding, props, and sawhorses.
After the building foundation has been prepared,
and where practical, building materials should be
placed on the building site near the place where they
will be used. Girts, purlins, cave struts, and brace rods
should be equally divided along each side of the foun-
dation. Panels and miscellaneous parts that will not be
used immediately should be placed on boards on each
side of the foundation and covered with tarpaulins or