windows cannot be approved for this use.
**************************************************************************
Provide sash and frame with necessary hardware to conform to the
requirements of Underwriters Laboratories Inc. (UL), for class of window
indicated. Submit proof of conformance. UL label will be accepted as
proof. Labeled window details take precedence over details indicated or
specified for nonlabeled windows, except when sections required for
nonlabeled windows are heavier than those required by UL. In lieu of UL
label, written certification by approved nationally recognized testing
agency may be submitted. Certification must state that complete window
unit of type provided has been tested and conforms to published standards,
including methods of tests, of UL.
2.4
PROVISIONS FOR GLAZING
**************************************************************************
NOTE: Inside glazing is preferred, especially for
windows above first floor and other locations where
access is difficult. Windows designed for inside
glazing may not be available in double-hung type.
Check manufacturers' literature. Where project
requires insulated glass, specify sash members,
glazing beads, and hardware of sufficient size and
weight to receive and support glass of thickness
shown. Allow 3 mm 1/8 inch minimum between each
side of insulating glass and metal frame for glazing
compound and expansion. Also allow 3 mm 1/8 inch
between edges of glass and frame. Drawings should
indicate method for securing insulating glass.
**************************************************************************
Design sash for [inside] [outside] glazing and for securing glass with
[metal beads] [glazing clips] and glazing compound. [Where insulating glass
is indicated, use rabbets of adequate weight and depth to receive and
properly support glass and glazing accessories.] Glass and glazing is
specified in Section 08800 GLAZING.
2.5
MULLIONS AND TRANSOM BARS
**************************************************************************
NOTE: Specify wind loading requirements in areas
subject to wind velocities in excess of 113 kph 70
mph; otherwise delete. The wind loading of 958 Pa
20 psf is based on 145 kph 90 mph wind velocity at
61 meters 200 feetabove grade.
**************************************************************************
Provide mullions between multiple window units designed to withstand
specified wind load requirements. Secure mullions and transom bars to
adjoining construction and window units in such a manner as to permit
expansion and contraction and to form weathertight joint. [Anchor mullions
between windows requiring window cleaner's bolts to provide safe and
adequate support for window cleaner. Where window cleaners' bolts are
fastened to mullions, reinforce backs of mullions.] Provide mullion covers
of manufacturer's stock design on the interior and exterior to completely
cover exposed joints and recesses between window units and for neat
appearance. [Provide special covers over structural supports at mullions
as indicated.]
SECTION 08510
Page 9
Previous Page
