Engineered floor joist span tables

This Performance Standard provides an easy-to-use table of allowable spans for applications in residential floor construction , allowing designers and builders to select and use I-joists from various member manufacturers using just one set of span tables. Span refers to the length of the I-joist. With these factors, the lightest joist will have a maximum span of feet, inches. This is the most common as the typical span is feet. These tables can also be used to determine deck joist span.

Span Tables for Joists and Rafters (Figure 5) gives a required compression value of 2psi for a span of feet and bearing length of 1. How to calculate floor joist span? What size lumber for floor joist? Can you use 2xfloor joists?

The dimensional stability of TJI joists help them resist warping, twisting and shrinking that can lead to squeaky floors. TJI joists are lightweight and come in long lengths, which makes them faster and easier to install than traditional framing, and saves you both. Floor Joist Span Tables for various Sizes and Species of Wood.

The table below shows the maximum span for a floor joist with the following designations: Douglas Fir-Larch (lumber species) No. The table excerpt above is simply a sample and may not be valid for your region. Floor Truss Span Tables Alpine Engineered Products These allowable spans are based on NDS 91.

Spacing of trusses are center to center (in inches). LP SolidStart I- Joist Benefits. They can be trimmed on-site, and long lengths allow ceilings and floors to be designed with fewer pieces, saving installation time. ENGINEERED WOOD PRODUCTS Roseburg’s engineered wood plants are located in Riddle, Oregon and Chester, South Carolina. These state-of-the-art facilities are focused on ensuring the highest quality standards are maintained.

Rafter spans can be extended slightly beyond what the rafter tables suggest, when there is a cantelever extending beyond the supporting wall. Ceiling Joist Span Use this table to determine the maximum lengths of ceiling joists based on species of lumber, joist spacing, and joist size. SPAN TABLES FOR JOISTS AND RAFTERS AMERICAN WOOD COUNCIL Table 9. Required compression perpendicular to grain design values (F c⊥) in pounds per square inch for simple span joists and rafters with uniform load. Bearing Length, in. Listed are tables based on common loading conditions for floor joists, ceiling joists and rafters.

Maximum floor joist span for No. Grade of Douglas fir are indicated below. Live load is weight of furniture, win snow and more. Open Joist is a revolutionary open web, all woo floor truss engineered with superior strength and load carrying capabilities. Find Span Carts for Open Joist products.

Span Tables Lumberworx has created the span tables below to assist in the specification of the Lumberworx members. Alternatively you can use the Lumberworx design tool. This free tool gives construction industry professionals the ability to design wall, floor and roof members using the Lumberworx product range. Joists can also be used for office floors, Metal web joist span table sheet attached. Simplified maximum span tables for selected visual and mechanical grades of Southern Pine lumber in sizes 2×thru 2×12.

This page focuses on the tree sawed variety. Refer to General Notes on page 11. All roof joists to be sloped 1⁄in 1minimum. Use of this table for horizontal spans should be limited to roof slopes of per foot or less. For greater slopes, convert horizontal span to up-the-slope span using the table on page 14.

Important Notes on Span Tables : Spans are based on uniformly loaded joists and include allowances for repetitive use members. Additional dead loads are due to various combinations of construction materials. Do not install them upside down. Nordic I-joists provide a first-rate solution for residential, multiresidential, and commercial construction projects. Compared to conventional lumber, they offer many well-known attributes and benefits, including light weight, ease of installation, a variety of lengths and design options (multiple spans ), the possibility of drilling holes through their web, and a larger surface.

An I-Joist is an engineered wood joist , designed to eliminate the problems that occur when using traditional timber joists. The joists are shaped like an “I” and are lightweight, but strong. I- Joists are produced under strict quality control, so that natural imperfections that are found in natural timbers are none-existant. The proper size will be sorted under total and live load per foot values.

Be sure to also check the tables for shear values, required end bearing lengths, and span limitations.