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Title: Section 2110 • Size: 5287
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SECTION 2110 - GLASS MASONRY
2110.1 General. Masonry
of glass blocks may be used in nonload-bearing exterior or interior
walls and in openings which might otherwise be filled with windows,
either isolated or in continuous bands, provided the glass block
panels have a minimum thickness of 3 inches (76 mm) at the mortar
joint and the mortared surfaces of the blocks are treated for
mortar bonding. Glass block may be solid or hollow and may contain
inserts.
2110.2 Mortar Joints. Glass
block shall be laid in Type S or N mortar. Both vertical and horizontal
mortar joints shall be at least 1/4 inch (6 mm) and not more than
3/8 inch (10 mm) thick and shall be completely filled. All mortar
contact surfaces shall be treated to ensure adhesion between mortar
and glass.
2110.3 Lateral Support. Glass
panels shall be laterally supported along each end of the panel.
Lateral support shall be provided by panel anchors
spaced not more than 16 inches (406 mm) on center or by channels.
The lateral support shall be capable of resisting the horizontal
design forces determined in Chapter 16 or a minimum of 200 pounds
per lineal foot (2920 N per linear meter) of wall, whichever is
greater. The connection shall accommodate movement requirements
of Section 2110.6.
2110.4 Reinforcement. Glass
block panels shall have joint reinforcement spaced not more than
16 inches (406 mm) on center and located in the mortar bed joint
extending the entire length of the panel. A lapping of longitudinal
wires for a minimum of 6 inches (153 mm) is required for joint
reinforcement splices. Joint reinforcement shall also be placed
in the bed joint immediately below and above openings in the panel.
Joint reinforcement shall conform to U.B.C. Standard 21-10, Part
I. Joint reinforcement in exterior panels shall be hot-dip galvanized
in accordance with U.B.C. Standard 21-10, Part I.
2110.5 Size of Panels. Glass
block panels for exterior walls shall not exceed 144 square feet
(13.4 
) of unsupported wall surface or
15 feet (4572 mm) in any dimension. For interior walls, glass
block panels shall not exceed 250 square feet (232 
)
of unsupported area or 25 feet (7620 mm) in any dimension.
2110.6 Expansion Joints. Glass
block shall be provided with expansion joints along the sides
and top, and these joints shall have sufficient thickness to accommodate
displacements of the supporting structure, but not less than 3/8
inch (19.5 mm). Expansion joints shall be entirely free of mortar
and shall be filled with resilient material.
2110.7 Reuse of Units. Glass
block units shall not be reused after being removed from an existing
panel.
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