![]() Timber to be covered, these span tables do not apply to timber which is fully exposed to the elements. ![]() These span tables apply only to flat roof and roof with a slope of up to 10 degrees. If insulation is placed on top of the flat roof joists and as such the joists are not fastened to the boarding above, the depth to breadth ratio of the joists should not exceed a ratio of 4 to 1. ![]() The dead loads shown at the top of span table above do not include the self weight of the joists, however, the joist self weights are included (in addition to the dead loads) in the calculations used to determine permissble clear spans. The allowable clear spans have been calculated in accordance with BS 5268-2:2002 Structural use of timber - Part 2: Code of practice for permissible stress design, materials and workmanship and BS 5268-7.2:1989 Structural use of timber - Section 7.2 Joists for flat roofs. * Boarding to be fastened on top of flat roof joists with a depth to width ratio greater than 4 Standard for Safety Glazing Materials used in Buildings-Safety Performance Specifications and Methods of Test, ANSI Z97.1–2004 (incorporated by reference, see § 3280.4).Dead load per square metre (in kN/m²) supported by joistsĬentre-to-centre spacing of joists (in mm) Minimum Design Loads for Buildings and Other Structures-ASCE 7–1988. National Evaluation Report, Power Driven Staples, Nails, and Allied Fasteners for Use in All Types of Building Construction-NER–272, 1997. Standard Specification for Gypsum Wallboard-ASTM C 36/C 36M–99, 1999. Medium Density Fiberboard (MDF) For Interior Applications-ANSI A208.2–2002 (incorporated by reference, see § 3280.4). Standard Test Methods for Use and Calibration of Hand-Held Moisture Meters-ASTM D4444, 1992.Įngineered Wood Construction Guide-APA E30R 2001 (incorporated by reference, see § 3280.4). Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Base Materials-ASTM D 4442–92 (Re-approved 1997), 1997. Standard Test Methods for Puncture and Stiffness of Paperboard, and Corrugated and Solid Fiberboard-ASTM D781, 1973. Voluntary Specifications for Aluminum, Vinyl (PVC) and Wood Windows and Glass Doors-ANSI/AAMA/NWWDA 101/I.S.2–97. Span Tables for Joists and Rafters-PS–20–70, 1993, AFPA.ĭesign Values for Joists and Rafters 1992, AFPA. Wood Structural Design Data, 1986 Edition with 1992 Revisions, AFPA. National Design Specifications for Wood Construction, 2001 Edition, with Supplement, Design Values for Wood Construction, NDS–2001, ANSI/AFPA. Performance Standard for Wood-Based Structural Use Panels-NIST PS 2–04, 2004 (incorporated by reference, see § 3280.4).ĭesign and Fabrication of Plywood Stressed-Skin Panels, Supplement 3-APA–U 813L, 1992 (incorporated by reference, see § 3280.4). 1, 1990.ĭesign and Fabrication of Plywood Sandwich Panels, Supplement #4-APA U 814H, 1990 (incorporated by reference, see § 3280.4). Panel Design Specification-APA D410A, 2004.ĭesign and Fabrication of Glued Plywood-Lumber Beams, Supplement# 2-APA S 812R, 1992 (incorporated by reference, see § 3280.4).ĭesign and Fabrication of Plywood Curved Panels-APA–S 811M, Suppl. Structural Design Guide for Hardwood Plywood Wall Panels-HPVA Design Guide HP–SG–96, 1996.įor wood products-Structural Glued Laminated Timber-ANSI/AITC A190.1–1992.Ĭonstruction and Industrial Plywood (With Typical APA Trademarks)-PS 1–95.ĪPA Design/Construction Guide, Residential and Commercial-APA E30-P–1996.ĭesign Specifications for Metal Plate and Wood Connected Trusses-TPI–85.ĭesign and Fabrication of All-Plywood Beams-APA H–815E (PDS Supplement #5), 1995. Prefinished Hardboard Paneling-ANSI/AHA A135.5–1995.Īmerican National Standard for Hardwood and Decorative Plywood-ANSI/HPVA HP–1–1994 (Approved 1995). Standard Specification for Strapping, Flat Steel and Seals-ASTM D3953, 1991. Structural Applications of Steel Cables for Buildings-ASCE19, 1996. Standard Specifications Load Tables and Weight Tables for Steel Joists and Joist Girders, SJI, Fortieth Edition, 1994. Specification for the Design of Cold-Formed Stainless Steel Structural Members-SEI/ASCE 8–02, 2002. Specification for the Design of Cold-Formed Steel Structural Members-AISI–1996. Specification for Structural Steel Buildings-Allowable Stress Design and Plastic Design-AISC–S335, 1989. ![]() Aluminum Design Manual, Specifications and Guidelines for Aluminum Structures, Part 1-A, Sixth Edition, October 1994, and Part 1-B, First Edition, October 1994.
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