Metal Ceiling Joist Span Table

Values are for simple span conditions.

Metal ceiling joist span table. Lateral support of compression flange. For two equal spans the listed span is the center to center distance from either end to the center support with the joist continuous over the center support. T radeready s teel joist span tables are to be utilized in conjunction with the notes below.

Span exceeds 26 feet in length. Allowable ceiling spans deflection limit l 360. 1 spans are based on continuous lateral support of the compression flange.

Size in gauge joist spacing in 12 16 24 allowable single span ft in 3 5 8 20 10 89 0. If stud height exceeds table web stiffeners are required. Fy ksi 4 psf.

Calculated allowable properties are based upon aisi s100 07 north american specification for the design of cold formed steel structural members. Joist spacing in o c. Ceiling joist spans for common lumber species uninhabitable attics without storage live load 10 psf l δ 240 check sources for availability of lumber in lengths greater than 20 feet.

Allowable limiting heights spans contact clarkdietrich technical services at 888 437 3244 for any questions on tables below. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall. Lateral support of compression flange.

Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. A web stiffener is a 6 length of stud secured to the stud web at both ends of the stud with four 4 8 pan head screws.