The underlying sketch shows components of a glass-aluminum curtain wall. Using leader lines and labels, identify the following components: (i) vision glass, (ii) spandrel glass, (iii) vertical and horizontal pressure plates, and (iv) vertical and horizontal covers. How are the covers anchored to mullions and rails?
What will be an ideal response?
The covers are not anchored to mullions and rails. They are snapped-on to pressure plates (see page 828 of the
Text).
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Name the three commonly recognized types of backflow.
What will be an ideal response?
In the diagram, determine the value of ?3 if 
.
Fill in the blank(s) with the appropriate word(s).
After boring the hole through the coupling, a machinist measures the bore diameter to be 1.251 inches. The tolerance was 1.250 plus or minus .005. It can be concluded that the diameter of the bore is:
A) Too large B) Within acceptable tolerance C) Too small D) Exactly as specified on the drawing
To adjust cabinets so that they are plumb and level, carpenters use _____
a. shims b. expansion bolts c. adjustable hangers d. double bevels