A system using R-404a has an evaporation temperature of 0°F. If the line length is 100 ft. and the system needs a capacity of 2 tons, what size line should be used?
A) 7/8 in B) 3/4 in C) 1-1/8 in D) 5/8 in
A
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Use the finished drawing from Problem P8–6 to complete this problem. Construct a series of profiles across the stream shown in Problem P8–6. Draw the first profile 50? from the southern property line, along the stream, and label the profile A. Label each profile consecutively. Cut each profile perpendicular to the stream and extend the profiles 100? beyond the stream, or to the edge of
the property. Draw the profiles 25? apart across the entire length of the stream on the property. Determine the best horizontal and vertical scales to use in order to arrange all profiles on an ANSI D size sheet. Use a 10:1 ratio for horizontal and vertical scales. Label elevations on all profiles. What will be an ideal response?
In the diagram below, what is the perimater of polygon HJKM?
Fill in the blank(s) with the appropriate word(s).
To insure that the rafters or joists do not interfere with installation of the plenums on a curb mounted rooftop unit
A) The roof curb must be installed diagonal to the roof joists or rafters B) The roof curb must be square with the roof joists or rafters C) The roof joists or rafters are cut out where the curb is installed D) The plenums are fabricated in place with the roof joists or rafters passing through them
It is easier for an individual to visualize an orthographic projection than it is to visualize a pictorial view.
Answer the following statement true (T) or false (F)