6.2
CONSTRUCTION:
a.
Insulate the exterior walls to prevent freezing temperatures
in the pipe basement for locations where ambient temperatures
are -0.7C (20F) or below.
b.
Provide access to the pipe basement at stairwells and
emergency egress to the exterior through the use of areaways
where necessary.
6.3
HEATING AND VENTILATION:
a.
Provide thermostatically controlled mechanical ventilation to
prevent excessive rise in basement temperature and/or prevent
moisture problems.
b.
Provide intake louvers with dampers of sufficient size to
satisfy fan requirements.
c.
Screen ventilators and louvered openings to prevent entry of
insects and small animals.
d.
Provide heating in the pipe basement or insulate the slab or
both as dictated by design computations for maintaining slab
at 21C (70F).
7.
EXTERIOR ENTRANCES AND PLATFORMS:
7.1
All platforms, ramps and stairs adjacent to entrances shall have
non-slip surfaces. All entrances shall be accessible by
wheelchair from sidewalks and shall have nonslip surfaces.
7.2
All entrances and all exits at grade to be accessible to and
usable by persons with disabilities and shall be: (a) free of
steps or other obstructions; and (b) level or provided with ramps.
Fire stair exits, loading docks, boiler and chiller buildings,
etc., are exempt.
8.
DOORS:
8.1
Exterior main entrance doors are to be automatic sliding doors
(with breakaway features) or automatic swinging doors.
8.2
Provide solid core wood or hollow metal interior doors. Wood, 38
mm (1-1/2") thick solid core is preferred, except for locations
where metal is required for functional reasons. Provide metal
door frames. Follow VA Program Guide PG-18-14, Room Finishes,
Door and Hardware Schedule, for sizes, types and symbols of doors.
8.3
All corridor-to-corridor doors shall have glass vision panels as
per code. Doors in fire and smoke barriers shall have fire rated
glazing vision panels.
EXTERIOR EXIT DOORS: All exterior doors shall have a locking device
9.
suitable for the door, pedestrian traffic and security conditions. The
locks shall allow egress by turning a lever type door handle or
depressing a panic bar without requiring use of a key, or by other
equivalent push or pull means. Door knobs are not permitted on doors
accessible to the handicapped. On the exterior side the locks shall be
controlled by key.
10.
EXTERIOR WINDOWS:
10.1
HISTORIC BUILDINGS: While designing to meet the project goals,
use the Secretary of the Interior's "Standards for Rehabilitation
8
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