Drilling floor joists
- Thread starter Trouyano
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mgookin
Senior Member
- Location
- Fort Myers, FL
- Occupation
- Retired inspector, plans examiner & building official
It's called Boring and Notching.
If you don't find anything in the NEC look in the building code that applies to your project.
If you don't find anything in the NEC look in the building code that applies to your project.
97catintenn
Senior Member
- Location
- Columbia, TN
That would be in the IRC book R502.8 and figure R502.8
jaylectricity
Senior Member
- Location
- Massachusetts
- Occupation
- licensed journeyman electrician
The only thing in the NEC you'll find is 300.4.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
See if this helps
north star
Senior Member
- Location
- inside Area 51
@ = = @ = @
If your question relates to a Commercial application, ...see Section 2308.9.10
& 2308.9.11 [ `12 IBC ] in to typical wood joists.........If cutting notching or
notching in to engineered joists, ...see the manufacturer' guidelines on their
limitations.
@ = @ = = @
If your question relates to a Commercial application, ...see Section 2308.9.10
& 2308.9.11 [ `12 IBC ] in to typical wood joists.........If cutting notching or
notching in to engineered joists, ...see the manufacturer' guidelines on their
limitations.
@ = @ = = @
rcarroll
Senior Member
- Location
- Fort Collins, Colorado
Also note that I-joists have different drilling requirements than dimensional joists.
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
502.8 Drilling and notching. Structural floor members shall not be cut, bored or
notched in excess of the limitations specified in this section. See Figure 502.8.
502.8.1 Sawn lumber. Notches in solid lumber joists, rafters and beams shall
not exceed one-sixth of the depth of the member, shall not be longer than onethird
of the depth of the member and shall not be located in the middle onethird
of the span. Notches at the ends of the member shall not exceed onefourth
the depth of the member. The tension side of members 4 inches (102
mm) or greater in nominal thickness shall not be notched except at the ends of
the members. The diameter of holes bored or cut into members shall not
exceed one-third the depth of the member. Holes shall not be closer than 2
inches (51 mm) to the top or bottom of the member, or to any other hole
located in the member. Where the member is also notched, the hole shall not
be closer than 2 inches (51 mm) to the notch.
Do not make this mistake. I have had many a friend call me only to have me give them the bad news.
Nothing like pulling all your wires out to have the carpenters sister all the joists.
notched in excess of the limitations specified in this section. See Figure 502.8.
502.8.1 Sawn lumber. Notches in solid lumber joists, rafters and beams shall
not exceed one-sixth of the depth of the member, shall not be longer than onethird
of the depth of the member and shall not be located in the middle onethird
of the span. Notches at the ends of the member shall not exceed onefourth
the depth of the member. The tension side of members 4 inches (102
mm) or greater in nominal thickness shall not be notched except at the ends of
the members. The diameter of holes bored or cut into members shall not
exceed one-third the depth of the member. Holes shall not be closer than 2
inches (51 mm) to the top or bottom of the member, or to any other hole
located in the member. Where the member is also notched, the hole shall not
be closer than 2 inches (51 mm) to the notch.
Do not make this mistake. I have had many a friend call me only to have me give them the bad news.
Nothing like pulling all your wires out to have the carpenters sister all the joists.
jxofaltrds
Inspector Mike®
- Location
- Mike P. Columbus Ohio
- Occupation
- ESI, PI, RBO
See if this helps
Note to last two examples. Even if you are in the dead-center of the large holes in the stud example p-plates are still required.
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