Maximum Hole In 2x10 Floor Joist

Of solid wood between the top and bottom edges of the joist and the edges of any hole.

Maximum hole in 2x10 floor joist.

Placement of cuts in floor joists table 1. They do not affect hole placement. In diameter if the joist measures 9 in. Minimum distance from table b 1 round holes may be cut anywhere in web outside of hatched zone if.

Notches in 2x4 studs fig. D actual dimension d 3 max. You also have to leave at least 2 in. What you are seeing are 3 pvc pipes going through 2x10 sawn lumber joists of the second floor.

For a 2 10 where actual depth is 9 25 inches the maximum allowable hole diameter would be just over three inches. Minimum applies to all holes except knockouts closely grouped round holes are. 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. 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. They are located 3 away horizontally edge to edge from a larger hole. That gives you a 5 1 4 in. Deep the approximate size of a 2 10 after normal shrinkage.

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. Holes may be located vertically anywhere within the web. For simple span 5 minimum uniformly loaded joists meeting the requirements of this guide one maximum size round hole. Leave 1 8 of web minimum at top and bottom of hole.

Holes cannot be closer than 2 to the bottom or top of a joist or to another hole or notch in the joist. Bored holes in 2x4 studs d 6 max. You can drill the holes anywhere along the length of the joist first photo. Permitted if the group perimeter meets requirements for round or.

Length d 3 d 6 max. Outer 1 3 of span effects of notches can be reduced by using a gradual tapered notch instead of a square cornered notch. Knockouts are located in web at approximately 12 on center. The bored hole sizes were 4 1 2 in diameter.

Area in the middle of the 2 10 joist where the hole can go. Floor ceiling rafters 7 8 1 3 8 1 13 16 2 5 16 2 13 16 depth of notches located between the. Diameter plenty big enough for running cable. Maximum sizes for cuts in floor joists fig.