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Span Tables for Joists and Rafters, 2012
- Cover
- Title Page
- TABLE OF CONTENTS
- EXPLANATION OF TABLES [Go to Page]
- 1. SCOPE
- 2. LUMBER DESIGN VALUES
- 3. LUMBER SIZES
- 4. MOISTURE CONTENT
- 5. SPAN MEASUREMENT
- 6. ROOF LOADS
- 7. LUMBER IDENTIFICATION
- 8. GENERAL REQUIREMENTS
- 9. REQUIRED COMPRESSION PERPENDICULAR TO GRAIN [Go to Page]
- Table 9.1 Required compression perpendicular to grain design values (Fcperp) in pounds per square inch for simple span joists and rafters with uniform load.
- Table 9.2 Adjustment factors for alternate loading and spacing conditions for determining required compression perpendicular to grain design values (Fcperp) for joists and rafters.
- SPAN TABLES [Go to Page]
- TABLE F-1 FLOOR JOISTS WITH L/360 DEFLECTION LIMITS - LL = 30psf, DL = 10psf
- TABLE F-2 FLOOR JOISTS WITH L/360 DEFLECTION LIMITS - LL = 40psf, DL = 10psf
- TABLE F-3 FLOOR JOISTS WITH L/360 DEFLECTION LIMITS - LL = 50psf, DL = 10psf
- TABLE F-4 FLOOR JOISTS WITH L/360 DEFLECTION LIMITS - LL = 60psf, DL = 10psf
- TABLE F-5 FLOOR JOISTS WITH L/360 DEFLECTION LIMITS - LL = 40psf, DL = 20psf
- TABLE F-6 FLOOR JOISTS WITH L/360 DEFLECTION LIMITS - LL = 50psf, DL = 20psf
- TABLE F-7 FLOOR JOISTS WITH L/360 DEFLECTION LIMITS - LL = 60psf, DL = 20psf
- TABLE C-1 CEILING JOISTS WITH L/240 DEFLECTION LIMITS - LL = 10psf, DL = 5psf
- TABLE C-2 CEILING JOISTS WITH L/240 DEFLECTION LIMITS - LL = 20psf, DL = 10psf
- TABLE R-1 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 20psf, DL = 10psf
- TABLE R-2 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 30psf, DL = 10psf
- TABLE R-3 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 40psf, DL = 10psf
- TABLE R-4 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 50psf, DL = 10psf
- TABLE R-5 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 20psf, DL = 15psf
- TABLE R-6 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 30psf, DL = 15psf
- TABLE R-7 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 40psf, DL = 15psf
- TABLE R-8 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 50psf, DL = 15psf
- TABLE R-9 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 20psf, DL = 20psf
- TABLE R-10 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 30psf, DL = 20psf
- TABLE R-11 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 40psf, DL = 20psf
- TABLE R-12 RAFTERS WITH L/240 DEFLECTION LIMITS - LL = 50psf, DL = 20psf
- TABLE R-13 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 20psf, DL = 10psf
- TABLE R-14 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 30psf, DL = 10psf
- TABLE R-15 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 40psf, DL = 10psf
- TABLE R-16 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 50psf, DL = 10psf
- TABLE R-17 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 20psf, DL = 15psf
- TABLE R-18 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 30psf, DL = 15psf
- TABLE R-19 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 40psf, DL = 15psf
- TABLE R-20 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 50psf, DL = 15psf
- TABLE R-21 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 20psf, DL = 20psf
- TABLE R-22 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 30psf, DL = 20psf
- TABLE R-23 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 40psf, DL = 20psf
- TABLE R-24 RAFTERS WITH L/180 DEFLECTION LIMITATION - LL = 50psf, DL = 20psf
- APPENDIX A - COMMENTARY [Go to Page]
- A.1 Floor Joists
- A.2 Ceiling Joists
- A.3 Rafters
- A.4 Compression Perpendicular to Grain Design Requirements
- A.5 Lumber Design Values
- A.6 Load Requirements
- A.7 Support Requirements
- A.8 Repetitive Member Use
- A.9 Load Duration
- A.10 Use of the Span Tables
- Table A-1. FLOOR JOISTS WITH L/360 DEFLECTION LIMITATIONS
- Table A-2. CEILING JOISTS WITH L/240 DEFLECTION LIMITATIONS
- Table A-3. RAFTERS WITH L/240 DEFLECTION LIMITATIONS (Drywall ceiling attached to underside of rafter)
- Table A-4. RAFTERS WITH L/180 DEFLECTION LIMITATIONS (No drywall ceiling attached to underside of rafter)
- Figure A.10-1 Two-span floor joists overlap at interior span to double load carrying capacity of the floor system for the corridor.
- Conversion Diagram for Rafters
- Back Cover [Go to Page]