Bob The Builder Mystery Cache
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Difficulty:
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Terrain:
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Size: 
(regular)
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Bob is building his house, and he needs your help to get everything done right before the building inspector shows up! Answer the following questions correctly and use the number of each question to fill in the coordinates to find the location of where Bob wants to build his house. (And the cache). Please note, the cache is not at the posted coordinates. It is actually a couple of miles away at:
N 41 9._ _ _
A B C
W 78 41._ _ _
D E F
Example, if the answer to question A is answer 6, the coordinate will be N 41 9.6_ _ and so on.
The first thing Bob has to do is install footers for his house.
Question A is, what is the minimum depth below undisturbed ground surface must his exterior footings be?
1) 24 inches
3) 12 inches
6) 36 inches
9) 48 inches
After Bob gets his footers in place, he needs to pour his concrete foundation walls. he plans on using poured concrete 7 feet high.
Question B is, what is the minimum required thickness of his foundation wall?
1) 4 inches
4) 7.5 inches
5) 8 inches
7) 8.5 inches
Now that Bob has his foundation in place, it's time to start framing the floor. He is using #3 spruce-pine-fir 2x10 lumber floor joists with a dead load of 10 pounds per square foot, spaced 16 inches on center. Question C is, what is the maximum span of Bobs floor joists?
3) 8 feet 6 inches
5) 10 feet 4 inches
7) 11 feet 8 inches
9) 12 feet 6 inches
Next, Bob will be framing his walls. For his wall sheathing, he is using 7/16 OSB structrual panels applied to 2x6 studs.
Question D is, what is the minimum edge spacing of his fasteners if he uses 8d common nails?
1) 6 inches
2) 8 inches
3) 10 inches
4) 18 inches
Now, Bob has to build his roof. Again, he is using #3 spruce-pine-fir lumber for his rafters. He knows that the ground snow load is 30 pounds per square foot, and that his ceiling will not be applied to the rafters, and his span is 9 feet. Question E is, what size lumber does he need for his rafters?
2) 2x4
5) 2x6
7) 2x8
8) 2x10
Finally, Bob is wiring his new house. He has installed 4x1.5 inch square metal boxes in the ceilings to mount his lights to. Each box has a capacity of 21 cubic inches. Bob is using No. 12 wire, and has multiple wires going to each box. Question F is, what is the maximum number of conductors allowed in each box?
2) 4 conductors
5) 6 conductors
7) 7 conductors
9) 9 conductors
Now, with all of your help, hopefully Bob's house will pass inspection. Hard hats and tool belts are optional at ground zero!
Additional Hints
(No hints available.)