Drilling Silent Floor Joists

Drill holes with a diameter of no more than one third the depth of the joist staying 2 in.

Drilling silent floor joists. Refer to the hole chart on page 9 of the tji specifiers guide for uniformly loaded joists. Unfortunately unless you are standing there guiding the subcontractor my strategy you often wind up with improper cuts. Joist and the sheathing a common source of squeaks. Trus joist tji joist specifier s guide tj 4000 july 2019.

A properly installed silent floor system will ensure a squeak free floor due to the dimen sional and structural uniformity of the tji joists. Aug 26 2011 03 01 am. Holes anywhere in the web area of engineered i joists except within 6 in. Scan horizontally until you intersect the cor rect hole size.

There are very specific locations and sizes in the code telling you what is allowed. Of walls and rim joists. Away from the top and bottom. Fire safe construction 3 floor performance and tj pro rating 4 5 section 1.

Jay having used silent floor joists for several years i m well aware of their advantages and limitations. The picture above shows what can happen when an untrained plumber is working on your home. Let s review what is wrong with this particular joist and discuss what the proper technique is for. 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.

Where and how to drill joists for electrical cables or. Drilling floor joists to run plumbing wiring or ducts can be tricky. Using table a table b or both if required determine the hole shape size and select the tji joist and depth.