Drilling Silent Floor Joists

Unfortunately unless you are standing there guiding the subcontractor my strategy you often wind up with improper cuts.

Drilling silent floor joists.

The picture above shows what can happen when an untrained plumber is working on your home. Jay having used silent floor joists for several years i m well aware of their advantages and limitations. Holes anywhere in the web area of engineered i joists except within 6 in. 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.

Drilling floor joists to run plumbing wiring or ducts can be tricky. Refer to the hole chart on page 9 of the tji specifiers guide for uniformly loaded joists. Drill holes with a diameter of no more than one third the depth of the joist staying 2 in. There are very specific locations and sizes in the code telling you what is allowed.

Trus joist tji joist specifier s guide tj 4000 july 2019. 9 16 tji joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing. Let s review what is wrong with this particular joist and discuss what the proper technique is for. Of walls and rim joists.

However a totally squeak free floor is dependent upon other components of the floor system as well this guide addresses the. Away from the top and bottom. Joist and the sheathing a common source of squeaks. Where and how to drill joists for electrical cables or.

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. Fire safe construction 3 floor performance and tj pro rating 4 5 section 1.