Engineered Floor Joist Design

Using floor joist span tables.

Engineered floor joist design.

Residential structural design vertical structural forces we were about to start learning about floor joist span tables. Tji joists are lightweight and come in long lengths which makes them faster and easier to install than traditional framing and saves you both. Alpine engineered products 17 these allowable spans are based on nds 91. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00.

Design information for all joists tji joist floor framing 24 rim board selection and installation 25 floor details 26 27 roof framing 28. Please verify availability with the lp solidstart engineered wood products distributor in your area prior to specifying these products. But after the initial budgets for the landscaping and deck came in a. Building a deck with engineered lumber yes you can use i joists and lvls to build a deck as long as you carefully waterproof the framing.

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 section 3. Engineered wood products ewp span and size charts for bci joists. The dimensional stability of tji joists help them resist warping twisting and shrinking that can lead to squeaky floors. Don t worry you won t need to do a lot of calculations in determining the size and placement of the structural framing within your house design.

Triforce joists feature an open web design but do not use metal connector plates. Joists are available in several depths and lengths and superior strength allows them to span up to 30 feet triforce span tables. Floor joists are available in several depths and lengths that are sufficient for most residential and commercial building plans. A couple of years ago a landscaper asked us to work a deck into the landscape design for one of his clients.

Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability. Bottom chord dead. Trus joist tji joists are a key part of making a high performance floor. You can adjust their length on site because of a trimmable osb end panel.

Spacing of trusses are center to center in inches. Top chord dead load 10 psf. The typical engineered floor joist is made of lumber in the shape of an i thus commonly called an i joist. Triforce is assembled with finger joinery and waterproof heat rated adhesive.

Maximum deflection is limited by l 360 or l 480 under live load. Continuing on from part 1.