Tji Floor Joist Span Table

Important notes on span tables.

Tji floor joist span table.

Design properties 16 floor span and load tables 17 allowable holes 18 roof span and load tables 19 cantilevers 20 21 framing connectors 22 23. Joists can also be spaced wider than traditional solid sawn joists which allows for quicker and easier installation fast and easy install. Tji 360 joists 3 8 25 117 8 14 16 1 tji 560 joists 7 16 3 117 8 14 13 w uniform load in pounds per linear foot l span in feet d out to out depth of the joist in inches el value from table above for tji 110 210 230 and 360 joists δ 22 5 wl 4 2 el 2 67 wl 4 d x 10 5 for tji 560 joists. Large holes can be cut in the webbing of tji joists allowing for mechanicals to be easily run and installed.

El value from table above for tji 110 210 230 and 360 joists δ 22 5 wl4 2 el 2 67 wl2 d x 105 for tji 560 joists δ 22 5 wl4 el 2 29 wl d x 105 material weights include tji weights in dead load calculations see design properties table at left for joist weights tji joists are intended. It shows the standard span tables for tji s. All trimjoist products are cambered to compensate for dead load deflections. They only show the most restrictive of simple or multi span.

The tables look overwhelming but they are actually pretty simple to use. Simple spans multiple spans. The following screen shot comes from the trus joist tji manual. Domestic floor span tables 23 f details 24 section 2 jji joists jji joists 05 introduction 06 jji joist properties 07 service holes 08 acoustics 09 fire and durability 10 health and safety 11 site storage and restrictions 12 section 5 roof design roof design 33 design considerations 34 flat roof cold vs warm design 35 span tables flat roof 36.

Spans are based on uniformly loaded joists and include allowances for repetitive use members. Live loads of 40 psf assumed. Tji joists are lightweight and come in long lengths which makes them faster and easier to install than traditional framing and saves you both. The dimensional stability of tji joists help them resist warping twisting and shrinking that can lead to squeaky floors.

Do not install them upside down. Spans based on l 480 deflection and desgin loads of 40 psf live and 10 psf dead. El value from table above for tji 110 210 230 and 360 joists δ 22 5 wl 4 2 el 2 67 wl d x 105 for tji 560 joists δ 22 5 wl 4 el 2 29 wl2 d x 105 tji joists are intended for dry use applications depth tji joist weight reaction lbs lbs ft joist only el x 106 in 2 lbs factored resistances standard term. 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 connectors 14 15 section 2.

Additional dead loads are due to various combinations of construction materials. Trus joist tji 110 1 3 8 x 1 3 4 16 11 15 6 14 7 13 7. Tj does not give a multi span chart. Trus joist tji joists are a key part of making a high performance floor.