Determine the number of 8-inch-high by 8-inch-wide by 16-inch-long concrete blocks required to complete the wall in Figures 11.23 and 11.24. The overhead doors are 10 feet wide by 12 feet high. If lintel blocks are required wherever the #4 horizontal bars are located and above the doors, how many plain blocks and how many lintel blocks are needed for the wall?
What will be an ideal response?
Find the net area of the wall as follows:
Gross wall area (sf) = 80? × 17?4? = 1,387 sf
Area of doors (sf) = 4 × 10? × 12? = 480 sf
Net area (sf) = 1,387 sf – 480 sf = 907 sf
There are 1.125 block per sf.
Number of blocks = 907 sf × 1.125 blocks per sf = 1,020 blocks
There are five rows of lintel blocks, located at 4?, 8?, 12?, 16?, and 17?4?. The bottom three rows pass through the doors and are only a total of 40? long (80? – 4 × 10?). The top two rows are 80? long. There is 40 feet (4 × 10?) of lintel block above the doors.
Lintel blocks (ft) = 3 × 40? + 2 × 80? + 40? = 320?
Lintel blocks (ea) = 320? × 12 in per ft / 16? = 240 blocks
Plain blocks (ea) = 1,020 blocks – 240 blocks = 780 blocks
You might also like to view...
If a heater has a control valve and it is closed, both hoses should be warm.
Answer the following statement true (T) or false (F)
The _____ was accidentally introduced into the U.S. Territory of Guam after World War II
a. feral hog b. rattlesnake c. brown tree snake d. fallow deer
Suppose a 160-pound person stood in flat-bottomed shoes having a total area of 60.0 . What pressure is exerted on the ground by the bottoms of the shoes?
What will be an ideal response?
Which of the inputs of a J-K flip-flop are asynchronous?
A) S and R B) R, J, and K C) J, K, and C D) All of the above are asynchronous.