The following exercises comprise a self test. The figures following each question refer to a paragraph

containing information related to the question. Write your answers in the space provided below each

question. When you have finished answering all the questions for this lesson compare your answer with

those given for this lesson in the back of this booklet. Review the lesson as necessary. Do not send in your

solutions to these review exercises.

Plywood is used frequently as a construction material in framed structures. What advantages are there in

using plywood instead of solid wood? (Para 3-1**b**)

In slatted sheathing, what is meant by "one-in-three" spacing, and when is it used? (Para 3-3**c**)

What two types of roofing are used by the Army in TO construction? (Para 3-4)

In the design of a gable roof for a small storage building, each rafter will have a horizontal run of 10 feet. If

you use corrugated sheet metal roofing, what is the least total rise each rafter must have? (Para 3-5**a**)

How many rolls of 40-pound prepared roll roofing will you need to cover a gable roof on a building 60 feet

long with rafters having a line length of 11 feet 4 inches and a 2-foot overhang? (Para 3-5**b**)

Corrugated sheet metal roofing cannot be used for slopes less than 4 inches per foot. Prepared roll roofing

cannot be used for slopes less than 1 inch per foot. How can you cover a flat roof? (Para 3-5**b**)

A valley is formed where two roofs come together at an angle. What are the two most common methods used

in TO construction, to waterproof this valley? (Para 3-6)