glass and with gutters for the collection of condensation;
that glass is set on felt or in putty, as prescribed; and that
caps are set and adjusted to be watertight without
imposing restraint or strain on the glass.
Skylights may be provided by installing corrugated
glass in panels on roofs of corrugated types. As the
inspector, you must be sure that glass is of the type,
thickness, and size specified; that the glass is fastened
securely but without restraint or strain; and that the
installation is made completely watertight.
Glass may be clear window, polished plate,
processed, rolled figure sheet, figured plate, wire, prism,
corrugated, safety, or heat-absorbing.
You must make sure that the glass for each location
is of the type, grade, thickness, surface finish, color, and
size specified and that conforms to include metalwork
and steel structures, woodwork, and concrete work. To
inspect different types of jobs, you must know what to
look for in each type of surface.
As an inspector, you need a thorough knowledge of
paint material, equipment, painting procedures, and
disposal. You must also be able to inspect both exterior
and interior jobs involving different types of surfaces,
such as metalwork, woodwork, and concrete work.
Paints that are on the market today may not be on
the market tomorrow. The never-ending advancement
in technology and environmental restrictions in todays
society will find new methods in the way of new paint
materials, equipment, and in the way we paint. Many
products today come either primed for painting or have
a baked on enamel finish, ready to install.
Paint materials have really changed over the years.
Technology has gone from lead-based paints to
lead-free paints, from enamel to water-based (latex)
enamel, which is much safer for the environment, and
so on. Remember, if you need to rehab an old building
and paint removal is necessary, you are probably
looking at a lead-based surface. If this is the case, check
with the safety officer, the environmental officer, or the
ROICC, so he or she can sample the exterior paint for
lead. Also, when painting, make sure the paints are
applied at temperatures above 40°F. Preparation is the
key to any good paint job.
The inspection of exterior work includes steel
structures and woodwork. To inspect different types of
jobs, you must know what to look for in each type of
STEEL STRUCTURES. Thorough preparation
of the surfaces to be painted is the most important and
the most frequently slighted element of good painting.
Preparation of surfaces is of particular importance when
paints with synthetic resin vehicles are to be used
because they require exceptionally clean, dry surfaces
for satisfactory results. As the inspector, you must be
sure that steel surfaces are cleaned by wire brushing,
sandblasting, gritblasting, flame cleaning, cleaning with
solvent, or airblasting, as may be specified; that all
surface rust, dirt, grease, oil, and loose scale are
removed; and that tight scale is also removed if so
specified. When the use of chemical rust removers is
specified or permitted, you must make sure that the
preparation is of an approved type and is brushed on
thoroughly and allowed to dry; and furthermore, that all
loose material is brushed off. Galvanized surfaces must
either be treated with diluted muriatic, phosphoric, or
ascetic acid, rinsed, and allowed to dry or be treated with
the approved proprietary treating agents, as may be
You must be sure that ready-mixed paint, which
tends to settle in the container, is thoroughly remixed to
uniform consistency either by hand or power stirring.
Usually, it is necessary that the lighter fluid be poured
off into another clean container, that the heavier residue
be stirred until it is uniform, and then the lighter liquid
be added gradually, with continuous stirring, until the
paint has been worked to a smooth, even, homogeneous
mixture. You must also make sure that paints delivered
with pigments and vehicles in separate containers are
similarly mixed, preferably with power stirrers. You
must make sure that thinning is permitted only when
specifically authorized and that the amount of thinner
added is limited to the minimum required for
You must be certain that paint is applied only under
satisfactory atmospheric conditions. The specifications
usually specify the minimum temperatures at which
painting may be done. You must ensure that paint is not
applied in a highly humidor rainy atmosphere or when
condensation on the metal surface may occur and that
the paint surface is visually dry before permitting
painting to proceed. Specifications may prescribe
application by brush or spray or permit either method.