On truss joints, verify that lengths of welds are
proportioned as indicated so that eccentricity of the
welded joint to the line of stress is avoided.
That all loose slag is removed.
That special care is taken to make sure that welds
made overhead or in awkward or restricted positions are
sound and full.
That the shop coat and welds are touched up as
specified and that the specified number of coats of field
PAINT is applied.
That the paint used is of the type, the quality, and
the color specified. (For more information, consult the
Steelworker, Volume 2, NAVEDTRA 12530).
Metal-framed walls are similar in design to
wood-framed walls. They have channel-shaped studs
and C shaped studs that are fastened to the metal
channel that serves as the bottom and top plate. The tops
of the door and window openings are supported by
channel-shaped headers. However, lumber may be
used for header material. if the plans and specifica-
tions specify it. The metal C stud material is avail-
able in various sizes. The most popular stud widths
are 6 inches, 3 1/2 inches, and 2 1/2 inches, and
the header and joist widths are 6 inches, 8 inches,
and 10 inches. The thickness of the galvanized
steel ranges from 14 gauge to 20 gauge steel. For
the double-top plate, you may use 2 by material as
long as the plans and specifications specify lum-
ber vice metal. When inspecting these metal walls,
make sure the proper self-drilling screws are used,
check for tolerance and gauge of metal, and be sure
the bottom plate is securely fastened to the floor.
Also, ensure the knockouts are aligned properly for
easier runs for the electrical and mechanical lines.
There is one mistake commonly made when working
with metal framing and that is cutting of the metal.
When you cut metal or scratch metal it tends to
oxidize resulting in the creation of rust. How fast the
oxidation occurs depends upon the climate. To prevent
oxidation, coat the cut ends with a galvanize paint or a
In light-frame construction. buildings are
constructed according to the location of country and
local building codes. As the inspector, you must be
familiar with these codes and regulations. In some areas
of the country, buildings must be constructed with
special resistance to wind and rain. In other locations a
building is constructed according to other disaster
problems, such as locations prone to earthquakes, cold
climates, snow loads, and humid climates. All require
quality construction and special designs. Structures
should be built to reduce the effects of shrinkage,
warping, and resistance to fire hazards.
This section will not cover all aspects of inspecting
light framed construction; however, as an inspector or
crew leader, you need to be knowledgeable about what
to look for when inspecting this type of construction.
Wood floors for buildings of frame construction
usually consist of finished flooring laid on subflooring
that is supported by floor joists. Wood floors usually
consist of planks surfaced on four sides (S4S), laid on
edge with tight joints, and supported by floor beams of
dimensional timber spaced at fairly long spans as
specified in the drawings and specifications.
As the inspector, you must ensure the following:
That all lumber is of the specified grade and type
according to specifications.
That all beams are true.
That flooring material is resting squarely on the
That floor joists are the correct size and overall
length, and are sound and free from excessive warp.
That the floor joists are installed bearing on sills
or beams or supported by straps or hangers, and that are
braced with cross bridging and/or with solid bridging,
That the tops of the floor joists are brought to a
true, level plane.
That subflooring of the specified kind, grade, and
size is installed, made tight, and thoroughly nailed.
That building paper is laid, if prescribed.
Wood floors are frequently installed on steel
framing, particularly in light industrial buildings where
steel bar joists are used. In some cases, floor joists are
installed on the steelwork, and the wood floor
construction is the same as for frame construction. In
other cases, floor decking, consisting of heavy planking
with square, shiplap, or tongue-and-groove joints, is