Notches and Bores Flashcards
An exterior or load-bearing Stud can be notched up to what percentage?
25%
A non load-bearing Stud can be notched up to what percentage?
40%
What is the maximum length and depth a joist can be notched?
A length of 1/3 and a depth of 1/6 the width of the joist.
What part of a joist can not be notched?
The middle third.
How much can a joist be notched on the ends?
1/4 the width of the joist.
Missing wood fibers in the middle third of the span are the same as what?
A notch.
An interior load-bearing Stud can be Bored up to what percentage?
40%
What percentage of an interior non load-bearing Stud be bored?
60%
How close to the top and bottom of a joist can a bore be?
Within 2-inches.
The max bore size in a joist is what?
1/3 the width of the joist or D/3
A bore should be how far from a notch?
A minimum of 2-inches.
Bores should be a minimum of what from the edge of a stud?
⅝ -inches.
If doubled, an exterior or load-bearing partitions stud can be bored up to what percentage?
40% to 60%
How many consecutive studs can be bored 40-60% if the studs are doubled?
No more than 2.
A bore cannot be located in the same section as what?
A cut or notch.
The minimum required bearing for wood framing resting on wood or in a hanger is what?
1-½ -inches
The minimum required bearing on concrete is what?
3-inches.
A cut in a joist should be treated as what?
A notch.
Ledger boards should have a minimum measurement of?
2x2
Two opposing notches are permitted in the outer thirds if they don’t do this when added together?
Exceed the limits for a single notch
A notch not exceeding D/3 is permitted in the top of a rafter or ceiling joist if it is within what?
The joist/rafter’s depth from the face of the support.
An over-cut in a notch does what?
Adds to the notches depth.
Beams over 4-inch nominal must not be notched on which side?
The tension side.
The percentage of a top plate that may be cut out for plumbing and reinforced with a 16-gauge steel plate is what?
50%.
Should the corners of a notch be cut square or at an angle?
At an angle.
Angled corners in a notche help prevent what from forming?
Cracks
