Mezzanine Floor Joist Spacing

Dead load weight of structure and fixed loads 10 lbs ft 2.

Mezzanine floor joist spacing.

Floor joist system construction manual. 2 grade of douglas fir are indicated below. 1 ft 0 3048 m. 1 psf lb f ft 2 47 88 n m 2.

You should check with your local building department for construction requirements in your area. Howick s floor joist system is the ideal solution for mezzanine flooring for new and existing buildings. This system offers maximum economy. Still when framing a raised floor it s easier to think of floor joist spacing in terms of 12 16 or 24 inches on center because each joist is positioned along the header according to its center point.

True floor joist span calculations can only be made by a structural engineer or contractor. Lightweight shallow composite joists mean greater rigidity as well as a more economical solution for your mezzanine. Live load 30 lbs ft 2 1436 n m 2. While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length.

Ecospan s joists range from 10 to 40 deep with lengths up to 60 feet. The mezzanine joists oversail the primary members and sit directly onto the main support or via a cleat bolted to the web. For floors where maximum headroom is required. Tie bars must be provided at mid span position as illustrated on mezzanine floor tie bars all fixing bolts must be m16 diameter grade 8 8 complete with washer under head and nut.

1 in 25 4 mm. In the example the joists have a spacing of 16 inches and a span of 11 feet 2 inches. Joist span and spacing is set by your local building code. The span table for a 30 psf live load 10psf dead load floor indicates a required fb value of 1 315 and a minimum e value of 1 800 000.

This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. Maximum floor joist span for no. Fj140140 15451 55 3 5 3 4 3 1 fj190190 15451 55 4 3 4 0 3 5 fj240 fj240240 15451 85 fj290 5 1 5 0 4 4 fj290290 15452 50 6 2 6 0 5 6. To find the actual distance between the inside edges of each adjacent floor joist subtract 1 inches from either 12 or 24 inches.

Live load is weight of furniture wind snow and more. Floors can either be installed in situ in existing buildings or as cassettes. In this case your joists are adequate to support a 30 psf live load and 10 psf dead load.