Data Sheet 1-49 for method of attachment of nailers.
A water-borne preservative treatment should be
specified in Section 06100NA for wood which will be
in contact with bituminous materials.
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Pressure-preservative-treated as specified in Section 06100 ROUGH CARPENTRY.
PART 3
EXECUTION
3.1
EXAMINATION AND PREPARATION
3.1.1
Surface Inspection
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NOTE: Unless otherwise directed, do not refer to
vapor retarders for projects in the
SOUTHNAVFACENGCOM area. Vapor retarder may be
specified for heated buildings where the average
January temperature is below 5 degrees C (40 degrees
F) and the expected interior winter humidity exceeds
45 percent. Vapor retarder will be specified for
heated buildings where a high humidity condition is
expected, such as indoor swimming pool or laundry.
Where a vapor retarder is to be installed, the
designer will make sure that the computations show
that the dew point is on the cold side of the vapor
retarder. Computations should use recognized
methods in agreement with ASHRAE Handbook,
Fundamentals.
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Surfaces shall be clean, smooth, and dry. [Surfaces receiving vapor
retarder shall be free of projections which might puncture the vapor
retarder.] Check roof deck surfaces, including surfaces sloped to roof
drains and outlets, for defects before starting work.
The [Contractor shall] [Contracting Officer will] inspect and approve the
surfaces immediately before starting installation. Prior to installing
[vapor retarder] [ventilating felt] [insulation], perform the following:
[a.
Examine wood decks to ascertain that deck boards have been
properly nailed and that exposed nail heads have been set.]
[b.
Examine steel decks to ensure that panels are properly secured to
structural members and to each other and that surfaces of top
flanges are flat or slightly convex.]
[c.
Examine precast concrete decks to ensure that joints between
precast units are properly grouted and leveled to provide suitable
surfaces for installation of [ventilating felt] [vapor retarder]
[and] insulation.]
[d.
In the presence of the Contracting Officer perform the following
surface-dryness test on concrete substrates:
(1) Foaming: When poured on the deck, one pint of asphalt when
heated in the range of 176 to 204 degrees C 350 to 400 degrees F,
SECTION 07220
Page 18
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