TABLE 1
LIQUID CONSOLIDANT
EPOXY PASTE
Viscosity Poises
@ 72 deg. F
4.7 max.
Thixotropic paste
Solids
95 percent min.
98 percent min.
Tensile Strength
4000 psi
2500 psi
Elongation
50 percent
4 percent
Compressive Strength
Failure
19000 psi
---
Yield
3500 psi
5500 psi
PART 3
EXECUTION
3.1
GENERAL REQUIREMENTS
Methods used for preparation of historic wood and metal surfaces for
painting shall be the gentlest possible to achieve the desired results.
Historic substrate materials shall not be damaged or marred in the process
of surface preparations. Samples of the existing paint finishes shall be
collected and analyzed for the purpose of documentation or matching, if [so
directed by the Contracting Officer] [required by the contract documents.]
Material and application requirements for paints are covered in Section
09900 PAINTS AND COATINGS.
3.2
VENTILATION
Interior work zones having a volume of 280 cubic meters 10,000 cubic feet
or less shall be ventilated at a minimum of 2 air exchanges per hour.
Ventilation in larger work zones shall be maintained by means of mechanical
exhaust. Solvent vapors shall be exhausted outdoors, away from air intakes
and workers. Return air inlets in the work zone shall be temporarily
sealed before start of work until the prepared surfaces have dried.
Operators and personnel in the vicinity of paint removal processes
involving chemicals or mechanical action (sanding or blasting) shall wear
respirators.
3.3
PROTECTION OF AREAS NOT TO BE PAINTED
Items not to be painted which are in contact with or adjacent to painted
surfaces shall be removed or protected prior to surface preparation and
painting operations. Items removed prior to painting shall be replaced
when painting is completed. Following completion of painting, workers
skilled in the trades involved shall reinstall removed items. Surfaces
contaminated by preparation materials shall be restored to original
condition.
3.4
CLEANING OF SURFACES
Surfaces to be painted shall be clean and free of grease, dirt, dust and
other foreign matter before application of paint or surface treatments.
After cleaning, surfaces shall exhibit a surface disfigurement rating of 7
or greater when evaluated in accordance with ASTM D 3274. Dirt and surface
SECTION 09995
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