Drilling Silent Floor Joists

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

Drilling silent floor joists. Aug 26 2011 03 01 am. Jay having used silent floor joists for several years i m well aware of their advantages and limitations. 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.

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. Let s review what is wrong with this particular joist and discuss what the proper technique is for. Away from the top and bottom. There are very specific locations and sizes in the code telling you what is allowed.

Drill holes with a diameter of no more than one third the depth of the joist staying 2 in. The picture above shows what can happen when an untrained plumber is working on your home. A properly installed silent floor system will ensure a squeak free floor due to the dimen sional and structural uniformity of the tji joists. Using table a table b or both if required determine the hole shape size and select the tji joist and depth.

Joist and the sheathing a common source of squeaks. Unfortunately unless you are standing there guiding the subcontractor my strategy you often wind up with improper cuts. Where and how to drill joists for electrical cables or. Ilevel trus joist tji joist specifier s guide tj 4001 march 2007 11 how to use these tables 1.

Scan horizontally until you intersect the cor rect hole size. Refer to the hole chart on page 9 of the tji specifiers guide for uniformly loaded joists. Holes anywhere in the web area of engineered i joists except within 6 in.