Glass
Glass types, tagging lites, and the strength check.
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Glass types
Each project has glass types (GL-1, GL-2, SP-1 for spandrel). Add one two ways:
- Quick pick
- A standard 1" or triple unit, with its published center-of-glass U, SHGC and visible transmittance. Its lites start annealed, a CHECK until you set the heat treatment with Edit.
- Build it
- Lite by lite: color, coating, product, thickness, heat treatment, laminated; and each space's width and gas. Its values are calculated from the glass makers' published layer data and marked calculated.
- Spacer
- TGI Spacer, TPS, VTS, stainless steel or aluminum, set with Edit. The framing's published U is with a warm-edge spacer (TGI, TPS and VTS are). With aluminum or stainless steel the energy code is a CHECK, never a pass. Not given, a warm edge is taken and said.
- LuxWall vacuum
- In the quick pick: Enthermal (10 mm) and Enthermal Plus (1") vacuum insulating glass, with LuxWall's published center-of-glass values, tempered. Vacuum glass is outside ASTM E1300, so its lites are checked by hand, never passed. Enthermal Plus's lites and weight aren't published: the glass weight on the Glass tab is used, a CHECK.
A new type takes the next number; a deleted number isn't reused. Each card draws its make-up and the largest lite it's used on.
Tip. Give the heat treatment the drawings give. When they don't, the check takes annealed and asks you to confirm, never something stronger.
Tagging lites
Untagged lites take the default type. To use another, select a lite on the drawing and pick its type, then apply it to the lite, its row, its bay or every lite. The drawing tints and names each type.
The glass check
Every lite gets a strength and deflection screen (ASTM E1300) at its glass size, four sides supported, under its wind zone's pressure (the stricter zone of the two verticals beside it). A lite that fails is red with a one-click fix, offered only once it is checked and passes: heat-strengthened or tempered when strength governs, thicker glass when deflection governs. A lite outside the standard's tables is flagged to check by hand, never passed.
- Glass deflection limit at the center
- 3/4" unless the spec sets 1" or none.
- Dead load
- Glass and framing in psf, or the whole wall when the design team gives one weight. A blank glass weight is the standard 1" unit, shown as missing.