In residential construction, posts and beams are usually spaced at ____' on center.

A. 5
B. 6
C. 4
D. 3


Answer: C

Trades & Technology

You might also like to view...

A 1530 MW bituminous coal-fired wet-bottom plant emits mercury into the atmosphere. The EPA AP-42 emission factor for the power plant is 16 lb of Hg per 1012 btu. The plant operates around the clock, 365 days a year, 24 hours per day. The 20 m3/s (actual) of exhaust from the plant exits the 2-mdiameter stack at 700°C. The stack is 50 m high. The air pressure within the stack is essentially equal to the ambient air pressure of 1 atm. The average ambient temperate measured at the stack height is 20°C. The average temperature measured at 110 m on a nearby radio tower is 18.5°C. The prevailing wind speed is 3 m/s. Determine:

a. The mass emission rate of Hg in units of mg/s b. The plume rise from the stack in m c. The maximum ground-level pollutant concentration (mg/m3) from an elevated source in ppm d. The concentration of mercury 2 km directly downwind from the power plant. Calculate the concentration at ground level for gaseous pollutants that are not absorbed by the ground. What will be an ideal response?

Trades & Technology

A low-head hydro dam forms a rectangular lake 47 ft. by 126.25 ft.  What is the surface area of the lake??

Fill in the blank(s) with the appropriate word(s).

Trades & Technology

Which of the following classes are judged on the rider’s position and effectiveness?

a. hunt seat equitation c. hunter under saddle b. hunter over fences d. no answers

Trades & Technology

Figure 10-2 In Figure 10-2, the data is sent to TT401 by a ____ connection.

A. hydraulic line B. electrical line C. mechanical linkage D. capillary tube

Trades & Technology