Maximum Hole In 2x10 Floor Joist

Deep the approximate size of a 2 10 after normal shrinkage.

Maximum hole in 2x10 floor joist.

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 bored hole sizes were 4 1 2 in diameter. Permitted if the group perimeter meets requirements for round or. That gives you a 5 1 4 in.

You can drill the holes anywhere along the length of the joist first photo. Knockouts are located in web at approximately 12 on center. 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.

Minimum distance from table b 1 round holes may be cut anywhere in web outside of hatched zone if. Floor ceiling rafters 7 8 1 3 8 1 13 16 2 5 16 2 13 16 depth of notches located between the. 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.

In the case of your 2 10 joists the maximum diameter is 35 64 in. Minimum applies to all holes except knockouts closely grouped round holes are. Leave 1 8 of web minimum at top and bottom of hole. Holes may be located vertically anywhere within the web.

They do not affect hole placement. Maximum sizes for cuts in floor joists fig. For a 2 10 where actual depth is 9 25 inches the maximum allowable hole diameter would be just over three inches. For simple span 5 minimum uniformly loaded joists meeting the requirements of this guide one maximum size round hole.

Placement of cuts in floor joists table 1. 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. 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. 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 example a hole should not be greater than 3 in. The diameter of holes shall not be greater than 1 3 the depth of the floor joists. Length d 3 d 6 max. Diameter plenty big enough for running cable.

Area in the middle of the 2 10 joist where the hole can go. In diameter if the joist measures 9 in. You also have to leave at least 2 in. Notches in 2x4 studs fig.