Stair Framing
Rough Framing
Tool ID and Usage
Construction Math
Construction Math 2
100

Horizontal walking surface on stairs

Tread

100

Engineered floor or ceiling framing member with wood flanges and an OSB web. 

 I-Joist

100

A carpenter needs to quickly mark a perfectly square line across a 2×6 before making a cut. This tool is the best choice.

What is a speed square (rafter square)?

100

This is the total distance around the outside of a room or building.

What is the perimeter?

100

This fraction has a numerator that is larger than its denominator.

What is an improper fraction?

200

Vertical board between treads.

Riser

200

This non-structural member is installed at the peak of a conventional roof and provides a nailing surface for opposing rafters.

What is a ridge board?

200

A carpenter needs to determine if a wall is perfectly vertical before fastening it in place. Which tool should they use?

What is a level?

200

A tape measure reading of 5'-8" represents this many total inches.

What is 68 inches?

200

When adding two fractions with different denominators, this must be found before adding the numerators.

What is the least common denominator (LCD)?

300

Inclined structural member supporting stairs.

Stringer

300

This type of wall is commonly found at each end of a house with a gable roof.

What is a rake wall?

300

This layout tool is used to snap long, perfectly straight reference lines across floors, roofs, and wall plates.

What is a chalk line?

300

This type of measurement determines how much space exists inside a three-dimensional object and is expressed in cubic units.

What is volume?

300

This theorem is used by carpenters to determine the length of a rafter or to verify that a layout is square.

What is the Pythagorean Theorem?

400

Front projection of the tread.

Nosing

400

According to a typical residential framing nail schedule, what size nails are commonly used to fasten rafters to a ridge board?

What are 16d common nails?

400

A carpenter needs to make dozens of accurate 90° crosscuts in 2×4 studs for wall framing. Which saw is the best choice?

What is a miter saw (chop saw)?

400

A carpenter needs to determine how much concrete is required for a footing. Which type of measurement must be calculated?

What is volume?

400

This unit of measurement is commonly used to calculate the amount of flooring, roofing, or drywall needed for a project.

What are square feet?

500

The maximum height of a riser in a residential building.

7-3/4"

500

This measurement always represents the second number in a roof pitch (for example, the "12" in a 6:12 pitch).

hat is 12 inches of horizontal run?

500

This tool is commonly used to cut curved shapes or irregular openings in plywood or OSB.

What is a jigsaw?

500

his is the mathematical operation used to convert inches to feet.

What is divide by 12?

500

A carpenter is laying out a 20' × 30' building foundation and needs to verify that the layout is perfectly square. What measurement should be compared?

What are the diagonal measurements?