What method of squaring a structure is described as measuring opposite corners to make sure the measurements are the same?
Builders level
Diagonal
Transit
3-4-5
Why is the 3-4-5 method used to lay out the perimeter of a structure?
So the batter boards will be the right height
So the footing will be the correct depth
To make sure the structure is square
To make sure the structure is the right size
What measurements are used to lay out a 36' × 42' structure using the 3-4-5 method?
15'–20'–26'
25'–35'–45'
27'–35'–45'
30'–40'–50'
What measurements are used to lay out a 24' × 30' structure using the 3-4-5 method?
21'–28'–35'
21'–30'-35'
21'–28'–40'
20'–28'–35'
What should be done to make sure a structure is square?
Establish grade
Make sure each side is level
Use the 3-4-5 method
Use the 10-20-30 method
To square a 24 × 30' building with the 3-4-5 method, measure 3' down the 24' distance (point A) and 4' down the 30' distance (point B), and when the building is square the distance measured directly across from point A to point B should be:
3'.
4'.
5'.
12'.
What may be used to lay out a building using the 3-4-5 method?
Framing square
Level
Plumb bob
100-foot tape measure
In addition to nailing, what can be done to help fasten plywood to joists?
Chalk
Crown
Cut
Glue
What should be done on the sides of an opening in a floor?
Cut joists 5" longer.
Glue extra plywood to make it more stable.
Joists should be doubled for more support around the opening.
Trimmers should be run perpendicular to regular joists.
The first task that should be done when constructing a floor is to:
Build and install girders and supports.
Check the foundation for squareness.
Layout and install sill plates.
Layout the sill plates and girders for joist locations.
The 3-4-5 method is used to:
Layout studs.
Level a floor.
Plumb a wall.
Square a building.
What are the correct numbers to use instead of using 3-4-5?
1-2-3
6-8-10
9-12-20
15-20-30
To lay out the sill for joist locations 16" OC, the FIRST measurement on the sill should be at:
14-1/4".
15-1/4".
15-1/2".
16".
In platform construction, the ends of all the joists are fastened to a:
Double joist.
Header joist.
Stair joist.
Trimmer joist.
What is checked for requirements before a floor joist is notched or drilled?
Architect design
Building code
Building contractor
Manufacturer
Panels or boards that are laid directly on and fastened to floor joists are called:
Siding.
Stud.
Subflooring.
Underlayment.
Double joists are needed under load bearing interior walls that run parallel with the:
Joists.
Rafters.
Studs.
Trimmers.
With the box sill in place, floor joists are placed at every spot marked on the:
Anchor bolt.
Header.
Plate.
Sill.
What is examined to find the rough opening sizes in the floor?