steel surfaces may require a fireproofing bond test to determine if the
paint formulation will impair proper adhesion. The Contractor shall
certify the acceptability of surfaces to receive sprayed-applied
fireproofing and submit a Surface Preparation Report accordingly. Overhead
areas to be fireproofed shall be cleared of all obstructions interfering
with the uniform application of the spray-applied fireproofing. Hardware
such as support sleeves, inserts, clips, hanger attachment devices and the
like shall be installed prior to the application of the fireproofing.
Condition of the surfaces shall be acceptable to the manufacturer prior to
application of spray-applied fireproofing. Applications listed for use on
primed surfaces shall be in accordance with the manufacturer's
recommendations and standards, and detailed in submittal item SD-03 Product
Data.
3.2
PROTECTION
Surfaces not to receive spray-applied fireproofing shall be covered to
prevent contamination by splatter, rebound and overspray. Exterior
openings in areas to receive spray-applied fireproofing shall be covered
prior to and during application of fireproofing with tarpaulins or other
approved material. Surfaces not to receive fireproofing shall be cleaned
of fireproofing and sealer.
3.3
MIXING
Fireproofing material shall be mixed in accordance with the manufacturer's
recommendations.
3.4
APPLICATION
**************************************************************************
NOTE: For renovation projects, spray-applied
fireproofing must be compatible with encapsulant of
remaining residual asbestos.
**************************************************************************
3.4.1
Sequence
Prior to application of fireproofing on each floor, the manufacturer shall
inspect and approve application equipment, water supply and pressure, and
the application procedures. If fireproofing is required to be applied to
underside of steel roof deck and steel floor assemblies, it shall be done
only after respective roof or floor construction is complete. No roof or
floor traffic shall be allowed during application and during a 7-day
minimum curing period. Fireproofing material shall be applied prior to the
installation of ductwork, piping and conduits which would interfere with
uniform application of the fireproofing.
3.4.2
Application Technique
Water pressure and volume shall be maintained to manufacturer's
recommendations throughout the fireproofing application. Fireproofing
material shall be applied to the thickness and density established for the
specified fire resistance rating, in accordance with the procedure
recommended by the manufacturer, and to a uniform density and texture.
Fireproofing material shall not be tamped to achieve the desired density.
SECTION 07810
Page 12
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