Permitted if the group perimeter meets requirements for round or.
Maximum hole in 2x10 floor joist.
In diameter if the joist measures 9 in.
You also have to leave at least 2 in.
Holes may be located vertically anywhere within the web.
Area in the middle of the 2 10 joist where the hole can go.
Placement of cuts in floor joists table 1.
You can drill the holes anywhere along the length of the joist first photo.
Holes cannot be closer than 2 to the bottom or top of a joist or to another hole or notch in the joist.
Outer 1 3 of span effects of notches can be reduced by using a gradual tapered notch instead of a square cornered notch.
D actual dimension d 3 max.
Minimum distance from table b 1 round holes may be cut anywhere in web outside of hatched zone if.
Minimum applies to all holes except knockouts closely grouped round holes are.
What you are seeing are 3 pvc pipes going through 2x10 sawn lumber joists of the second floor.
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.
Floor ceiling rafters 7 8 1 3 8 1 13 16 2 5 16 2 13 16 depth of notches located between the.
The bored hole sizes were 4 1 2 in diameter.
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.
For simple span 5 minimum uniformly loaded joists meeting the requirements of this guide one maximum size round hole.
Knockouts are located in web at approximately 12 on center.
Diameter plenty big enough for running cable.
That gives you a 5 1 4 in.
The diameter of holes shall not be greater than 1 3 the depth of the floor joists.
Maximum sizes for cuts in floor joists fig.
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.
For example a hole should not be greater than 3 in.
Bored holes in 2x4 studs d 6 max.
Of solid wood between the top and bottom edges of the joist and the edges of any hole.
Length d 3 d 6 max.
Deep the approximate size of a 2 10 after normal shrinkage.
They do not affect hole placement.
They are located 3 away horizontally edge to edge from a larger hole.
The hole cannot be larger than one third the depth of the joist so the maximum hole size for a 2 12 joist actual size 1 1 2 x 11 1 4 in is 3 3 4 in.
In the case of your 2 10 joists the maximum diameter is 35 64 in.
