A field-glazed storefront lite is resting directly on the metal sill without setting blocks. The installer says sealant will hold it in place. What is the quality concern?
Correct Answer
A) The glass needs proper setting blocks to support weight, maintain edge clearance, and reduce breakage risk
Glass should bear on proper setting blocks so weight is supported, edge clearances are maintained, and point contact breakage is avoided. Other choices misunderstand glass support and drainage.
Why This Is the Correct Answer
Glass should bear on proper setting blocks so weight is supported, edge clearances are maintained, and point contact breakage is avoided. Other choices misunderstand glass support and drainage.
Why the Other Options Are Wrong
Option B: The glass will become fire-rated automatically, leaving field glazing setting blocks unverified
The trap in B is The glass will become fire-rated automatically. That selection is wrong because the option does not produce the required Field glazing setting blocks outcome, The glass needs proper setting blocks to support weight, maintain edge clearance, and reduce breakage.
Option C: Use sealant alone to handle field glazing setting blocks
Choice C gives Sealant alone improves edge bearing. Its specific error: it points to Sealant alone improves edge bearing, but.
Option D: Metal-to-glass contact is required for drainage
Choice D (Metal-to-glass contact is required for drainage) is rejected because it answers the Field glazing setting blocks prompt with the wrong practical move.
Memory Technique
Picture a weep path on the jobsite; field glazing setting blocks is solved by the action that leads to The glass needs proper setting blocks to support weight, maintain edge clearance, and reduce breakage risk.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use the index entry or section for "Field glazing setting blocks and edge clearance" to confirm that Glass should bear on proper setting blocks so weight is supported, edge clearances are maintained, and point contact breakage is avoided.
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