Terms To Know

Question 0

Orthographic Projection

Answer 0

2-dimensional representation of 3-Dimensional object
Shown:
- top
- front
- back
-right / left side

Question 1

Specifications “specs”

Answer 1

List of materials, methods, model numbers, colors, allowances, & other details which supplements the information in the blue prints.

• working drawings
• construction materials & methods

Question 2

Elevation sheet

Answer 2

Page on blue prints that depicts the house or room as if a vertical plane were passed through the structure.

Question 3

Span

Answer 3

The clear distance that a framing member carries a load without support between structural supports.

Horizontal distance from eaves to eaves

Question 4

Pitch

Answer 4

Incline slope of a roof or the ratio of the total rise to total width of a house

• 6 foot rise to 24 foot width is a 1/4 pitch roof
• expressed in inches of rise per total horizontal run

Question 5

Slope

Answer 5

Incline angle of a roof surface, given as ratio of the rise (in inches) to the run (in feet)

Question 6

Rise

Answer 6

Vertical distance from eaves line to the ridge

Also vertical distance from stair tread to stair tread
and not exceed 7 1/2”

Question 7

Run, Roof

Answer 7

Horizontal distance from eaves to a point directly under the ridge.

One half the span

Question 8

Overhang

Answer 8

Outward projecting eve-soffit area of a roof; the part of a roof that hangs out or over the outside wall

See Cornice*

Question 9

Framing

Answer 9

Lumber used for the structural members of a building, 
Such as:
- studs
- joists
- rafters

Question 10

Double Top Plate

Answer 10

Top horizontal member of a frame wall supporting ceiling joists, rafters, or other members

Question 11

Stud

Answer 11

A vertical wood framing member ( wall stud) attached to horizontal sole plate below and the top plate above.

Normally:

• 2x4s or 2x6s
• 8’ long (sometimes 92 5/8”)

One of a series of wood or metal vertical structural members placed as supporting elements in wall partitions

Question 12

Ceiling Joist

Answer 12

One of a series or parallel framing members used to support ceiling loads and supported in turn by larger beams, girders, or bearing walls

Also called roof joists

Question 13

Birds Mouth or “Crows Foot”

Answer 13

Secures rafter to double top plate

Creates stability

Question 14

Terminators

Answer 14

Tell what’s being measured