Page 98 - Design of Reinforced Masonry Structures

2.50 CHAPTER TWO

Expansion strip

Recess unit 1 in. (25.4 mm)
minimum into restraint
Channel
type Packing and sealant
restraint (both sides)
Packing
and sealant
(both sides)
Panel
reinforcement
16 in. O.C.
(406 mm)
Expansion Glass maximum
strip unit spacing
masonry

Channel Mortar
fastener Asphalt emulsion

FIGURE 2.49 Channel-type restraint construction [2.3, 2.51].
Glass unit masonry panels are often rated for fire resistance, and for sound transmission.
Solid and thick-faced units provide higher ratings in both areas. Technical data and other
information on fire resistance ratings of glass unit masonry panels are available from manu-
facturers, the local building codes, or from the latest issue of the Underwriters Laboratory
Building Materials Directory [2.52].
In order to limit the impact of wall movement on glass panels, it is required that they
be structurally isolated to prevent the transfer of in-plane loads [2.2]. Vertical deflection of
the supporting members is limited to l/600 to limit deflection cracking. Table 2.11 provides

approximate dead weight of glass unit masonry panels, which may be used to design the
supporting structures.
TABLE 2.11 Approximate Installed Weight of
Glass Unit Masonry Panels [2.50]
Type of units Dead weight, psf
Thin units 16
Standard units 20
Thick-faced units 30
Solid units 40