TYPICAL DETAILS AND CODE LIMITATIONS
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- Glasbausteine / Hollow glass blocks, Standard
Series‹3 7/8" thick, Thinline Series -- 3‘1/8" thick
and special shapes. All blocks are designed for a modular face dimension
of 4", 6", 8" and 12" using ¼" thick mortar
joints.
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Mortar shall conform to ASTM C270 Type ‚S‘ for
maximum bond strength.
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Horizontal reinforcing for Standard Series to be 2"
wide of two 9 gauge parallel wires with cross ties at 8" o.c. Reinforcing for
Thinline Series to be1 5/8" wide. All reinforcing to have hot dipped zinc coating.
Horizontal reinforcing to have a maximum spacing of 18" o.c., i.e. every third joint
at 6" block, every other joint at 8" block and every joint at 12" block.
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Panel anchors to be 1 ¾" X 24" x 20 gauge steel
with elongated perforations and hot dipped zlnc coating. Locate panel anchors In same
lolnt as horlzontal relnforclng. Panel anchor to be installed In horizontal joint of
masonry wall if possible and embedded12". For alternate connection, return panel
anchor up face of lamb and add two ¼" ø anchors with washers just above bend of
anchor. Anchors to be in horizontal alignment.
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Aluminum channels with panel anchors are an acceptable
alternate.
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Head and jamb channel to be 1 ½" X 4 ½" X 14
gauge for Standard Series and 1 ½" X 3 ¾" X 14 gauge for Thinline Series.
Channels used for exterior installations should have hot dipped zinc coating.
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All glass block panels to be non-load bearing and isolated
from surrounding structures/walls with 3/8" thick glass fiber or white polyethylene
foam expansion strips at jambs and head. Sill to be coated with asphalt emulsion to serve
as a bond breaker.
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Structural members around glass block panels shall be
limited to a deflection of L/600.
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Provide for vertical expansion joints where straight walls
and curved walls (radius larger than 24") intersect or at a reversal of the curved
wall.
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Expansion material at jambs may be omitted for panels with
areas of 25 sq. ft or less. Expansion joint a thead must be maintained.
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All steel on the outside, within the wall system and
adjacent to wall on inside should have a coating of hot dipped zinc to minimize rust
staining.
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Silicone sealant may be used in lieu of mortar in which the
exposed joints are approximately 1/8" thick and panels are limited to 25 square feet
on exterior and 85 square feet on interior installations.
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Limitation of panel sizes:
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- Exterior wall panels using Standard Series (3 7/8"
thick) block exposed to 20 lbs./square foot wind load to be limited to 144 square feet
when supported on all four sides. Area may be increased to 250 square feet when an
intermediate stiffener is incorporated as an additional supporting member near the middle
of the panel and span is not longer than lO feet. Maximum height to be 20 feet and maximum
width to be 25 feet except the Uniform Building Code limits height and width to 15 feet.
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Interior wall panels using Standard Series (37/8"
thick) block to be limitedto 250 square feet. Max. height to be 25 feet and max. width to
be 25 feet except the Uniform Building Code limits height and width to 15 feet.
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Exterior or interior wall panels using Thinline Series (3
7/8" thick) block, exposed to 201 bs./square foot wind load or less to be Iimited to
85 square feet when supported on all four sides. Area may be increased to 150 square feet
when an intermediate stiffener is incorporated as an additional supporting member near the
middle of the panel. Maximum height is limited to 10 feet for exterior and 20 feet for
interior installations. Maximum width is Iimited to 25 feet for exterior and interior.
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Check governing building code for additional details.
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