Joist Span Table - Use this table to determine floor joist spans, deck joist span, and floor joist spacing.

No. 1 and No. 2 Grade of Douglas fir and maximum span floor joists - imperial units Maximum floor joist span for No. 1 and No. 2 Grade of Douglas fir are indicated below.

SFPA has created 46 simplified maximum span tables based on common load conditions for floor joists, ceiling joists, and rafters for selected visual and mechanical grades of Southern Pine lumber in sizes …

Aug 10, 2025 · Below are floor joist span tables for common timber species, derived from building code standards. It is crucial to note that these tables provide maximum allowable spans and should be …

US Frame Factory - Your go-to resource for framing tools and calculators. Optimize your designs with our easy-to-use tools for stud loads, joist spans, wall height, and more.

Jun 18, 2025 · This comprehensive guide explores what affects joist span, common span tables, material choices, spacing guidelines, and tips to help you build better, safer floors.

Oct 15, 2025 · The IBC floor joist span table provides standardized maximum span allowances based on wood species, joist size, spacing, and load requirements. These tables are critical references when …

Sep 19, 2024 · Learn everything you need to know about floor joist spans. This guide discusses floor joist spans, along with sizing, span tables, and types of wood.

For floor and ceiling construction surveyors can calculate the size, strength and centres/spacing of joists with reference to the data in these tables

Lumber Spans Quick Reference Card Floor Joists 10 PSF dead load L/360 deflection limit