18th Edition Stephen L. Herman
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,CHAPTER 1 REVIEW
All answers should be written in complete sentences, and calculations should be
shown in detail.
1. In a set of construction drawings, where would an electrician find
information about the location and placement of a building? ________________
2. From information on the composite site plan, where is the lowest area on the
site and what is the elevation? ________________________________________
3. What device is generally used to measure length on a plot or building plan? ___
4. What would be the elevation, at the pole, of the bottom of a trench being dug
to install telephone service using rigid nonmetallic conduit? ________________
5. Which of the methods for measuring ground resistance is used to measure
resistance over a wide area? _________________________________________
6. What is the difference, in SI units, between the lowest and the highest
contours? ________________________________________________________
, To answer the following questions, examine the composite site plan, the north
and west elevations, the site plan symbols, and the NEC.
7. What is the elevation of the manhole rim where the benchmark is
established? ______________________________________________________
8. What is the elevation of the first floor of the industrial building? ____________
9. What is the vertical distance from the manhole rim to the first floor of the
industrial building? (Measure in decimal feet.) __________________________
10. What is the vertical distance from the manhole rim to the first floor of the
industrial building, measured in feet and inches accurate to 1⁄16 inch? _______
11. Where is the preferred area for location of the construction trailer? Why did
you choose that area? _______________________________________________
12. It was determined that the rigid nonmetallic conduit for the telephone service
could be installed in a trench with a bottom elevation of 743.65 ft. If the
conduit is allowed to rise a distance of 1 ft, how deep is the trench at the
building? _________________________________________________________
13. Refer to plan E1 on page 2 of the plans. What is the height of the boiler room
floor?