Drilling Silent Floor Joists

Where and how to drill joists for electrical cables or.

Drilling silent floor joists. Scan horizontally until you intersect the cor rect hole size. Using table a table b or both if required determine the hole shape size and select the tji joist and depth. A properly installed silent floor system will ensure a squeak free floor due to the dimen sional and structural uniformity of the tji joists. Ilevel trus joist tji joist specifier s guide tj 4001 march 2007 11 how to use these tables 1.

Fire safe construction 3 floor performance and tj pro rating 4 5 section 1. Holes anywhere in the web area of engineered i joists except within 6 in. Joist and the sheathing a common source of squeaks. Away from the top and bottom.

Drilling floor joists to run plumbing wiring or ducts can be tricky. 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. However a totally squeak free floor is dependent upon other components of the floor system as well this guide addresses the. 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.

Of walls and rim joists. Jay having used silent floor joists for several years i m well aware of their advantages and limitations. Refer to the hole chart on page 9 of the tji specifiers guide for uniformly loaded joists. 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. Drill holes with a diameter of no more than one third the depth of the joist staying 2 in. Aug 26 2011 03 01 am.