Figure 3-39.Paper and combination templates.
Figure 3-40.Use of template in laying out a steel channel.
correspond with marks shown on the detail drawing
The ERECTION MARK of a member is used to
identify and locate it for erection. It is painted on the
completed member at the left end, as shown on the
detail drawing, and in a position so that it will be right
side up when the member is right side up in the
An ASSEMBLY MARK is painted on each piece
on completion of its layout so that the piece can be
identified during fabrication and fitting up with other
pieces to form a finished member.
PIPE FITTING AND LAYOUT
Lack of templates, charts, and mathematical
formulas need not hinder you in pipe layout. In
emergencies, welded pipe of equal diameter can be
laid out in the field quickly and easily. By using the
methods described here and a few simple tools, you
can lay out branches and Y connections as well as
turns of any angle, radius, and number of segments.
The few simple tools required are both readily
available and familiar to the Steelworker through
almost daily use. A framing square, a bevel protractor
with a 12-inch (20-cm) blade, a spirit level, a spring
steel wraparound (or tape), a center punch, a hammer,
and a soapstone will meet all needs. (A stiff strip of
cardboard or a tin sheet about 3 inches [7.5 cm] wide
also makes a good wraparound.) For purposes of our
discussion, the long part of the framing square is
referred to as the BLADE and the short part as the
Two methods of pipe layout are commonly used.
They are the one-shot method and the shop method.
The ONE-SHOT method is used in the field. With this