For example a hole should not be greater than 3 in.
Maximum hole in 2x10 floor joist.
Permitted if the group perimeter meets requirements for round or.
Of solid wood between the top and bottom edges of the joist and the edges of any hole.
For simple span 5 minimum uniformly loaded joists meeting the requirements of this guide one maximum size round hole.
Minimum applies to all holes except knockouts closely grouped round holes are.
In the case of your 2 10 joists the maximum diameter is 35 64 in.
Holes cannot be closer than 2 to the bottom or top of a joist or to another hole or notch in the joist.
30lb live load the joist spans are 13 6 and the bores occur in the exact middle of the joists top to botttom and in the end 3rd of the joist spans nearest the exterior bearing wall.
Minimum distance from table b 1 round holes may be cut anywhere in web outside of hatched zone if.
Notches in 2x4 studs fig.
They are located 3 away horizontally edge to edge from a larger hole.
What you are seeing are 3 pvc pipes going through 2x10 sawn lumber joists of the second floor.
Outer 1 3 of span effects of notches can be reduced by using a gradual tapered notch instead of a square cornered notch.
For a 2 10 where actual depth is 9 25 inches the maximum allowable hole diameter would be just over three inches.
Length d 3 d 6 max.
Area in the middle of the 2 10 joist where the hole can go.
Maximum sizes for cuts in floor joists fig.
The bored hole sizes were 4 1 2 in diameter.
Maximum allowable size for notches bored holes for floor joist ceiling joist rafters 2 x 4 2 x 6 2 x 8 2 x 10 2 x 12 depth of end notches.
The diameter of holes shall not be greater than 1 3 the depth of the floor joists.
The illustration and table below shows where cuts are permitted and the maximum size allowed based on d the depth of the joist top to bottom in inches.
Leave 1 8 of web minimum at top and bottom of hole.
Placement of cuts in floor joists table 1.
Diameter plenty big enough for running cable.
Bored holes in 2x4 studs d 6 max.
Deep the approximate size of a 2 10 after normal shrinkage.
You also have to leave at least 2 in.
Knockouts are located in web at approximately 12 on center.
You can drill the holes anywhere along the length of the joist first photo.
They do not affect hole placement.
D actual dimension d 3 max.
Floor ceiling rafters 7 8 1 3 8 1 13 16 2 5 16 2 13 16 depth of notches located between the.
That gives you a 5 1 4 in.
