Drilling Silent Floor Joists

Refer to the hole chart on page 9 of the tji specifiers guide for uniformly loaded joists.

Drilling silent floor joists.

However a totally squeak free floor is dependent upon other components of the floor system as well this guide addresses the. Joist and the sheathing a common source of squeaks. Away from the top and bottom. 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.

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. Scan horizontally until you intersect the cor rect hole size. 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.

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. The picture above shows what can happen when an untrained plumber is working on your home. Ilevel trus joist tji joist specifier s guide tj 4001 march 2007 11 how to use these tables 1.

Holes anywhere in the web area of engineered i joists except within 6 in. Of walls and rim joists. Let s review what is wrong with this particular joist and discuss what the proper technique is for. Fire safe construction 3 floor performance and tj pro rating 4 5 section 1.

Using table a table b or both if required determine the hole shape size and select the tji joist and depth. Trus joist tji joist specifier s guide tj 4000 july 2019. Unfortunately unless you are standing there guiding the subcontractor my strategy you often wind up with improper cuts.