JULY 2005
SOLICITATION FOR OFFERS
OUTPATIENT CLINIC
SFO NO. V101-183R-xxx-xxx-xx
[INSERT LOCATION OF FACILITY]
economic considerations. Where permitted, design and reinforce them to assure stability and water
tightness when subjected to lateral or thermal forces.
Make roof structures, such as penthouses and architectural screens enclosing or concealing roof-mounted
mechanical equipment, compatible in appearance and with the material, texture, color, and shape of the
building. Where it is necessary to expose roof-mounted mechanical equipment, minimize its appearance
by location, low silhouette, and color.
Provide access to roof areas by industrial stair. If stair (or fixed ladder) is exterior to the building, provide
means to prohibit unauthorized access to roof. Provide roof walkways of prefabricated asphalt planks with
nonslip surfaces on access routes over roofs to mechanical equipment requiring recurrent maintenance.
Where necessary for safety of maintenance workers, provide ladders, stairs and/or platforms.
In attic spaces that have batt or loose floor insulation, provide walkways for access to mechanical and
electrical equipment. Show the location and details of attic walkways on architectural drawings.
Whenever mechanical equipment requiring periodic maintenance is installed on a roof more than 20 feet
above the ground, provide guardrails or fences between the roof edge and any equipment or walkways
less than 10 feet from the edge. Design the guardrails 42 inches high and in accordance with OSHA
requirements for standard guardrails.
6.2.5.4.2 Low Slope Roof Systems:
Design low slope roof systems in accordance with the recommendations of the National Roofing
Contractors Association (NRCA) Roofing and Waterproofing Manual and this manual.
Design all roofs with slope to roof drains or gutters.
Low-slope roof systems include but are not limited to the following roofing membranes with roof insulation:
Bituminous built-up roofing systems
Modified bituminous roofing systems
Single-ply sheet roofing systems
Fluid-applied roofing systems
Design low-slope roof systems with a positive slope a minimum of 1:50 (0.25 inch per foot) up to a
maximum of 1:12 (1.0 inch per foot) to drains:
Use tapered insulation, sloped structural systems, or level structural system with sloped fill to achieve
the required slope.
Do not use NRCA defined "One-way slope" (Sloping to a level valley). See NRCA - "Tapered Roof
Insulation Systems."
Use NRCA defined "Two-Way slope" (actually sloping in four directions).
Use a uniform square grid to lay out roof slopes to drains. Roofs shall not slope to level valleys, but may
have one-way slopes to gutters at gravel-stop edges.
Locate drains at points of maximum deck deflection, generally at midspan of the deck between supports
where possible.
Part I: Basic Solicitation Requirements Page 77 of 169
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