Fireproofing shall have a minimum ASTM E 605 dry density and ASTM E 736
cohesion/adhesion properties as follows:
2.1.1.1
Concealed Structural Components
Fireproofing for structural components concealed above the ceiling, or
within a wall, chase, or furred space, shall have a [minimum] [average]
applied dry density of 240 kg per cubic meter 15 pounds per cubic foot and
a cohesion/adhesion strength of 9.57 kPa (200 psf) 200 psf.
2.1.1.2
Exposed Structural Components
Fireproofing for exposed structural components, except where otherwise
specified or indicated, shall have a minimum applied dry density of 350 kg
per cubic meter 22 pounds per cubic foot and a cohesion/adhesion strength
of 20.83 kPa 434 psf.
2.1.1.3
Mechanical Rooms and Storage Areas
Fireproofing for structural components located in mechanical rooms and
storage areas shall have a minimum applied dry density of 640 kg per cubic
meter 40 pounds per cubic foot and a cohesion/adhesion strength of [350]
[_____] kPa [7,000] [_____] psf.
2.1.2
Deflection
Spray-applied fireproofing shall not crack, spall, or delaminate when
backing to which it is applied is subject to downward deflection 1/120 of 3
m 10 foot clear span, when tested in accordance with ASTM E 759.
2.1.3
Bond-Impact
Spray-applied fireproofing material shall not crack, spall or delaminate
when tested in accordance with ASTM E 760.
2.1.4
Compressive Strength
**************************************************************************
NOTE: For Navy projects use the table in NAVFAC's
guide specification, since the numbers in the table
were provided by the manufacturer's when the spec
was developed. Otherwise, include the same numbers
into these paragraphs. The wording in the
definitions contained in NAVFAC's guide
specification should be included in these
paragraphs, to avoid misinterpretations.
**************************************************************************
The minimum compressive strength shall be 48 kPa 1000 psf when tested in
accordance with ASTM E 761.
2.1.5
Corrosion
Spray-applied fireproofing material shall not contribute to corrosion of
test panels when tested as specified in ASTM E 937.
SECTION 07810
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