Drilling Tji Floor Joists

In a perfect world floor joists are left whole to provide the greatest support.

Drilling tji floor joists. Of walls and rim joists. Drilling floor joists to run plumbing wiring or ducts can be tricky. Let s review what is wrong with this particular joist and discuss what the proper technique is for. They are located 3 away horizontally edge to edge from a larger hole.

Trus joist tji joists. Holes anywhere in the web area of engineered i joists except within 6 in. There are very specific locations and sizes in the code telling you what is allowed. Minimum applies to all holes except knockouts closely grouped round holes are.

Drill holes with a diameter of no more than one third the depth of the joist staying 2 in. Where and how to drill joists for electrical cables or. Minimum distance from table b 1 round holes may be cut anywhere in web outside of hatched zone if. Away from the top and bottom.

Tji 110 tji 210 tji 230 tji 360 tji 560 and tji 560d joists. Refer to the hole chart on page 9 of the tji specifiers guide for uniformly loaded joists. The picture above shows what can happen when an untrained plumber is working on your home. Permitted if the group perimeter meets.

Often hole size can be increased and holes can be placed closer to bearing than shown on the chart based on actual design spans and loads.