Open Web Floor Joists Span Table

Engineered wood products ewp span and size charts for bci joists.

Open web floor joists span table.

Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Maximum spans published on the chart above may be limited by standard joist configuration. Maximum deflection is limited by l 360 or l 480 under live load. Because open joist is a stock product the length of an open joist truss determines the size and grade of the truss chords see table below.

Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Simply enter the required span to see a range of results that will work. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. The maximum span is measured o c.

To find maximum clear span for a given truss depth in a given loading condition refer to the bottom line of. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. The spans are based on simple span joists. Dead load deflection is limited to l 360 and total load deflection is limited to l 240.

Trimjoist is the marriage of an open web floor truss and a trimmable wooden i joist bringing the best features of each to the relationship. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. Our open joist system the strength of the triangulation the accuracy of multiple joints optimizing the use of wood in a responsible manner and adjustment flexibility to the site makes the triforce open joist the only floor open joist and adjustable made entirely of wood and assembled without a metal connector. The versatility of the trimjoist is unmatched by any other pre engineered wood joist product.

You will be given a range of depths and centres that are available and also an indicative deflection result. The re engineering of the wooden floor joist that. 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. Due to variations in timber grades load sets support conditions and bearing widths the tables are not suitable as a design tool.

No more custom made floor trusses. The following easi joist span tables are to be used as a basic guide to achievable joist span for given depth and spacing and should be used for estimating of feasibility only. The open web nature of the trimjoist is ideal for plumbing electrical find out more about load opening charts and requirements for the trimjoist floor truss system. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel.