Syp span chart

section properties and capacities and allowable loads for simple span glulam beams. revised version: sep 2016 all codes » apa standards; 2016 apa s475-2016 glued laminated beam design tables ...

Shop undefined 2-in x 10-in x 16-ft Southern Yellow Pine Kiln-dried Lumberundefined at Lowe's.com. Top Choice lumber is of the highest quality. Every piece meets the highest grading standards for strength and appearance. Limited holes, skip and wane toBeam Span Chart Table. SHARE. The span of a beam is dependent on a few variables: The grade and species of lumber, size of lumber and the load it carries. Fewer posts on upper-level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans. Beam span maximums are based on a maximum ... The header span table doesn’t differentiate between wood species like the floor-joist and rafter span tables do in Chapters 5 and 7. D-fir, hem-fir, SYP, and SPF are all grouped together in the header table. Also note that the header spans can change from one IRC version to the next. As lumber-rating authorities change the capacity of one or more …How to use the Span Tables. Example: In the joist span table below, the highlighted cell (10-5) indicates that a #2 grade 2" x 8" Douglas Fir joist, spaced 24" apart, can have a maximum span of 10 feet - 5 inches (10-5) if designing for a live load of 40 PSF, a dead load of 10 PSF, and a deflection limit of the total span in inches divided by 360.But the 2015 IRC included a new one (Table R507.5) that will make it easy for deck builders to spec a joist size for a given span and joist spacing. The table includes spans for common lumber species used for deck framing like southern pine, Douglas fir, hem-fir, redwood, western cedar and other species. The table accounts for wet service ...Table 9.1 in Span Tables for Joists and Rafters (Figure 5) gives a required compression value of 237 psi for a span of 16 feet and bearing length of 1.5 inches. (the tables permit a bearing length of up to 3.5 inches, but since 1.5 is probably the worst case that you’ll encounter for joist or rafter bearing, it’s a safe value.)

to the span in inches divided by 360, and is based on live load only. The load duration factor, C D, is 1.0. Listed spans are for wet-service conditions, pressure-treated Southern Pine floor/deck joists, MC > 19%. Check sources of supply for available grades and sizes. Maximum spans were calculated using design values effective June 1, 2013. Get instant access to a free live streaming USD SYP chart. This unique US Dollar Syrian Pound chart enables you to clearly notice the behavior of this pair.U.S. Sizing Table Lookup. Use these simple calculators to size Trus Joist TimberStrand LSL and Parallam PSL beams and headers. Select the application below you are looking to calculate. Calculators are for use in U.S. applications only. For Canada switch to Canada Sizing Table Lookup.Example: In the rafter span table below, the highlighted cell (13-0) indicates that a 2" x 8" Douglas Fir rafter, with a grade of #2, spaced 24" apart, can have a maximum span of 13 feet - 0 inches (13-0) if designed for a live load of 20 Psf, and dead load of 20 Psf. Rafter Span TablesLastly, multiply the number of rafters by 2 to get both sides of the roof or the roof’s slopes. For example, your house is 40 feet long with a 24″ rafter spacing. So the first thing you need to do is convert 30 ft to inches. 40ft x 12″ = 480″ (length in inches) ÷ 24″ on-center = 20 rafters.Maximum spans in feet-inches. Maximum Spans. 1. for Southern Pine . Effective June 1, 2013 . Table 12 Wet-Service Floor Joists (MC>19%) – 40 psf live load, 10 psf dead load, 360 deflection . Size Select . Spacing In. o.c. Dense Structural Select Structural NonDense Select Structural No.1 Dense No.1 NonDense No.2 Dense NonDense No.3 12

The load duration factor, C D, is 1.0 unless shown as 1.15 for snow or 1.25 for construction loads. Listed spans are for dry-service conditions unless the table is labeled as Wet-Service. Check sources of supply for available grades and sizes, and for lumber longer than 20 feet; an asterisk (*) indicates the listed span has been limited to 26 ... Learn how to design with glulam beams, a versatile and strong engineered wood product, by downloading the design tables from Alamco Wood. The pdf file contains span and load charts, connection details, and fire ratings for various glulam beam sizes and shapes. View here to get inspired by Alamco's glulam projects and capabilities.Versatile and strong, suitable for lumber framing projects. Each piece of this lumber meets the highest quality grading standards. Actual size: dimensions at time of manufacture. Product dimensions will vary depending on moisture content. Optional Accessories. Specifications. Nominal Dimensions. 2 in x 10 in x 20 ft. Grade. A general rule of thumb for joist span is 1-1/2 times a board’s depth in feet, however, it’s not that simple. The distance a 2×6 can span is determined by the species, grade, location, use, load, and spacing. Based on building codes, a 2×6 can span anywhere from 2’-1” to 20’-8” depending on the affecting factors.While prescriptive design tables (i.e., span tables) and similar design aids ... Southern Yellow Pine (SYP). Douglas Fir-Larch (DF-L). Hem-Fir (HF). Spruce-Pine- ...The load duration factor, C D, is 1.0 unless shown as 1.15 for snow or 1.25 for construction loads. Listed spans are for dry-service conditions unless the table is labeled as Wet-Service. Check sources of supply for available grades and sizes, and for lumber longer than 20 feet; an asterisk (*) indicates the listed span has been limited to 26 ...

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U.S. Office - 253.835.3344 1010 South 336th Street #210 Federal Way, WA 98003-7394 Canadian Office - 604.732.1782 P.O. Box 19118 Vancouver British Columbia V6K 4R8Table 1 provides the design values for visually graded Southern Pine dimension lumber that became effective June 1, 2013. Download a PDF, Tables 1 and 2. Download a PDF, Tables 3 and 4. Table 1: Visually Graded Dimension Lumber 2″ to 4″ thick, 2″ and wider; Table 2: Mechanically Graded Lumber 4″ thick or less, 2″ and wider; Table 3 ... User note: About this chapter: Chapter 8 addresses the design and construction of roof-ceiling systems. This chapter contains two roof-ceiling framing systems: wood framing and cold-formed steel framing. Allowable span tables are provided to simplify the selection of rafter and ceiling joist size for wood roof framing and cold-formed steel framing.The length of one 2×10 joist span depends on the wood species and how far apart it is from the next 2×10. A 2×10 southern yellow pine joist can span 16 feet and 1 inch without support. A doubled 2×10 beam can span 11' without support for a deck that is 4' wide. Lengths of 2×10 joists and beams vary depending on the application you are ...spans and required E values tabulated for 20 psf shall be permitted to be adjusted in accordance with the fol-lowing table: For roof live loads of 12 psf or 16 psf Table Multiply tabulated Multiply required number span by E-value by 12 psf 16 psf 12 psf 16 psf R-1 1.17 1.07 0.96 0.99 R-5 1.14 1.06 0.89 0.96

SPAN CHARTS Maximum clear span for ceiling joist- w/ gypsum clg. 10lbs live 5 lbs dead (no attic storage) 12" O.C. 16" O.C. Maximum clear span for rafters w/ gypsum ceiling- …R507.5Deck beams. Maximum allowable spans for wood deck beams, as shown in Figure R507.5, shall be in accordance with Tables R507.5 (1) through R507.5 (4). Beam plies …Choose the correct laminated veneer lumber span size by finding the correct span size for the LVL beams you are using and the spacing of the floor’s support columns on a LVL span size chart. Always use the correct LVL span size chart for yo...At 16 and 24 O.C spacing, 2nd-grade SFP 2×6 rafters span 12-feet-5-inches and 10-feet-2-inches. So, it is clear that 2×6 rafters have longer maximum spans than 2×4 sizes. So then, 2nd-grade SPF rafters have longer spans than SYP types for 2×4 and 2×6 rafters. The maximum span lengths for other lumber grades will differ from 2nd-grade ...Trussdoc (Structural) 3 Dec 02 10:00. Most P/T wood is Southern Pine. Assuming #2 grade, the. Fc = 525 psi and E = 1.2. L/d ratio is 13. Allowing for buckling, allowable compressive stress is roughly 475 psi, Area is 30 sq in, so the allowable force in the post is 14,300 lb. However, if the post is a stronger grade, the strength goes up quite ...2. Approve an industry accepted DI65 SYP Span Chart to be submitted to OSHA as a replacement for the incorrect span chart currently published. 3. Work with ANSI A10.8 committee to strengthen plank portion of this document. 4. Create SAIA Position Statement on “Cutting Back Wood Scaffold Planks.” 5. Course on Scaffold Plank Identification ...Applied loads are given in psf (pounds per square foot). Deflection is limited to the span in inches divided by 360 or 240 and is based on live load only. The load duration factor, C. …Versatile and strong, suitable for lumber framing projects. Each piece of this lumber meets the highest quality grading standards. Actual size: dimensions at time of manufacture. Product dimensions will vary depending on moisture content. Optional Accessories. Specifications. Nominal Dimensions. 2 in x 8 in x 12 ft. Grade. SPAN TABLES FOR JOISTS AND RAFTERS 3 AMERICAN FOREST & PAPER ASSOCIATION Table 9.1 Required compression perpendicular to grain design values (F …How far can a double 2×8 beam span. As per general rules and guidelines, #2 grade southern pine of a double 2×8 deck beam can span upto 8 feet when total load of 50 psf (40 psf live load + 10 psf dead load) with deflection limit L/360.Total load deflection limit = Span/240. 4. Live load ≤ 0.67 x Total load 5. Full lateral support on the compression side. 6. The values are based on the design properties listed in EWS Y117 and are in addition to the beam weight (assumed 35 pcf). 20 Allowable Load (plf) for 3-1/2-inch Wide 24F-V4/DF Glulam Floor Beams - 100% Floor Load Span ...Span calculations derived from the American Wood Council's "Span Calculator" Program, available at www.awc.org. 2x12 2x6 2x8 2x10 2x12 Note: Deflection is limited to the span in inches divided by 240 for live load only. Maximum spans are inside to inside of bearings Lumber Span Tables for Spruce-Pine-Fir South (SPFs)**

A "span options" calculator allows selection of multiple species and grades for comparison purposes. Read the Tutorial for Understanding Loads and Using Span Tables. FULL SCREEN The Span Calculator is supported by the Softwood Lumber Board. Download the Apps

15-1. On February 11, 2013, the Southern Pine Inspection Bureau published new design values for all sizes and grades of visually graded Southern Pine dimension lumber in. Supplement No.13 to the 2002 Standard Grading Rules for Southern Pine Lumber. These maximum spans were calculated using the new design values which …Raised Wood Floors. Raised floor homes look great and protect homeowners against risks from flooding and subsiding soils. Outdoor DIY. Both DIYers and building professionals will like these garden and outdoor living ideas and plans.But remember this beam size is recommended for residential building. 10 foot span – For 10 foot span for roofing, the recommended size of ridge beam is 3-2×8 or 6×8 size of beam. That means for 10 foot roof span, the depth of ridge beam has to be more at least 8 inches while the width is 6 inches. Also Read: What is a 8 on 12 roof pitch ...If you place the 2x6s at 16” O.C., then SYP can span over 16’ and SPF can span 14’. For heavy loads at 24” O.C., 2×6 SYP can span up to 9 ½’. SPF 2×6 rafters can span 8’. If you move the rafters closer together at 16” O.C., then your SYP rafters will span 11 ½’ and SPF up to 10’.Backed by a product and performance warranty, RigidLam LVL provides a better alternative to traditional, solid sawn lumber. The product is stronger, stiffer, and a more predictable building material, and when compared with similarly sized sections, RigidLam can support heavier loads and allows for greater spans than conventional lumber.Joist Spans. Douglas fir 2-by-10 joists graded as "Structural Select" allows joist spans up to 21 feet for a live load of 30 pounds per square foot when spaced 12 inches apart, 19 feet 1 inch for 16 inch spacing and 16 feet 8 inches for 24 inch spacing. A live load of 60 pounds per square foot demands more support and shorter spans.When building a deck with 7-ft. joists, you know the beam can span somewhere between 7-7 and 8-0, but you don’t know exactly where. Check with your local code official, or simply drop back to the shorter value in the table and assume the allowable span is 7-7. Section R507.6 calls for the built-up beams to be fastened together with a minimum ...Description. Also known as a Range Bar/Column Graph, Floating Bar Graph, Difference Graph, High-Low Graph . A chart used to display dataset ranges between a minimum and maximum value. Span Charts are ideal …

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CHAPTER 7 WALL COVERING. CHAPTER 8 ROOF-CEILING CONSTRUCTION. SECTION R801 GENERAL. SECTION R802 WOOD ROOF FRAMING. SECTION R803 ROOF SHEATHING. SECTION R804 COLD-FORMED STEEL ROOF FRAMING. SECTION R805 CEILING FINISHES. SECTION R806 ROOF VENTILATION. SECTION R807 ATTIC ACCESS. The load duration factor, C D, is 1.0 unless shown as 1.15 for snow or 1.25 for construction loads. Listed spans are for dry-service conditions unless the table is labeled as Wet-Service. Check sources of supply for available grades and sizes, and for lumber longer than 20 feet; an asterisk (*) indicates the listed span has been limited to 26 ...R802.4 Allowable Ceiling Joist Spans. Spans for ceiling joists shall be in accordance with Tables R802.4 (1) and R802.4 (2). For other grades and species and for other loading conditions, refer to the AF&PA; Span Tables for Joists and Rafters. Check sources for availability of lumber in lengths greater than 20 feet.to the span in inches divided by 360, and is based on live load only. The load duration factor, C D, is 1.0. Listed spans are for wet-service conditions, pressure-treated Southern Pine floor/deck joists, MC > 19%. Check sources of supply for available grades and sizes. Maximum spans were calculated using design values effective June 1, 2013.Southern yellow pine lumber was chosen for its strength and appearance from the finest mills that meet stringent, sustainable forestry guidelines. It is easy to work with and preferred for interior construction uses due to its structural properties and fiber density. It provides superior fastener-holding power and load-bearing capacity. V I S U A L L Y G R A D E D 1 L U M B E R T abl e3 R ft rs–M e dium r of ng:Dy w alc ;S 20, 30, or 40 psf live load; 15 psf dead load; /240 deflection limit Load duration factor The size of the lumber used for floor joists is the single greatest determining factor in terms of how far a joist can span. The joist span tables start with 2×6 lumber and it goes all the way up to 2×12. For example, a 2×6 Southern Pine joist can span 12’. A 2×12 joist of the same species and quality can span nearly 25’.Table 9.1 in Span Tables for Joists and Rafters (Figure 5) gives a required compression value of 237 psi for a span of 16 feet and bearing length of 1.5 inches. (the tables permit a bearing length of up to 3.5 inches, but since 1.5 is probably the worst case that you’ll encounter for joist or rafter bearing, it’s a safe value.) down, or in a continuous span across supports. An appropriate balanced beam combination, such as 24F-V5, may be used for either simple-span or continuous-span applications. The majority of stock glued laminated timber is manufactured with camber, but some stock members – especially balanced layup combinations – are manufactured without camber. ….

Beam Span Chart Table. SHARE. The span of a beam is dependent on a few variables: The grade and species of lumber, size of lumber and the load it carries. Fewer posts on upper-level decks are typically more desirable to the occupants and this drives the use of larger framing materials for longer spans. Beam span maximums are based on a maximum ... On the truss chords (see chart), only Fc, the compression value, is lower ... One caveat applies – the truss plate design values for SPF are lower than SYP ...Maximum span to depth ratio of 20 (for example, a 14” deep truss should not exceed a span of 23’ 4”). Maximum 30” (2’ 6”) top chord panel length on flat-wise trusses. Maximum 48” (4’) top chord panel length on edgewise trusses. Minimum duct chase offset from the bearing is ¼ of the truss span. No duct chase opening in cantilever sections. ...down, or in a continuous span across supports. An appropriate balanced beam combination, such as 24F-V5, may be used for either simple-span or continuous-span applications. The majority of stock glued laminated timber is manufactured with camber, but some stock members – especially balanced layup combinations – are manufactured without camber.Simplified maximum span tables for selected visual and mechanical grades of Southern Pine lumber in sizes 2×4 thru 2×12. Listed are 46 tables based on common loading conditions for floor joists, ceiling joists and rafters. View Joist & Rafter Tables Headers & BeamsThe length of one 2×10 joist span depends on the wood species and how far apart it is from the next 2×10. A 2×10 southern yellow pine joist can span 16 feet and 1 inch without support. A doubled 2×10 beam can span 11’ without support for a deck that is 4’ wide. Lengths of 2×10 joists and beams vary depending on the application you are ...Versatile and strong, suitable for lumber framing projects. Each piece of this lumber meets the highest quality grading standards. Actual size: dimensions at time of manufacture. Product dimensions will vary depending on moisture content. Optional Accessories. Specifications. Nominal Dimensions. 2 in x 12 in x 20 ft. Grade. The length, or span, of a 2×6 framing stud ranges from 84 inches to 120 inches. The typical length found in U.S. hardware stores is 96 inches, or 8 feet. The type of wood that is being used often effects what length is available.U.S. Office - 253.835.3344 1010 South 336th Street #210 Federal Way, WA 98003-7394 Canadian Office - 604.732.1782 P.O. Box 19118 Vancouver British Columbia V6K 4R8Shop undefined 2-in x 10-in x 16-ft Southern Yellow Pine Kiln-dried Lumberundefined at Lowe's.com. Top Choice lumber is of the highest quality. Every piece meets the highest grading standards for strength and appearance. Limited holes, skip and wane to Syp span chart, Table 1 provides the design values for visually graded Southern Pine dimension lumber that became effective June 1, 2013. Download a PDF, Tables 1 and 2. Download a PDF, Tables 3 and 4. Table 1: Visually Graded Dimension Lumber 2″ to 4″ thick, 2″ and wider; Table 2: Mechanically Graded Lumber 4″ thick or less, 2″ and wider; Table 3 ..., and Parallel to Floor Truss Span Strongback Lateral Supports 24" Max. Approx. 72" 5'-0 " Mi ni m u m Girder Floor Truss Floor Truss Jacks A A Bearing Wall Girder Floor Truss Floor Truss Jacks Bearing Wall Cantilevered Floor Truss Two 2x Rim Joists 24" Max. Roof-Floor Truss manual 7/31/08 10:43 AM Page 12. TM, R502.3.1 Sleeping areas and attic joists.. Table R502.3.1(1) shall be used to determine the maximum allowable span of floor joists that support sleeping areas and attics that are accessed by means of a fixed stairway in accordance with Section R311.7 provided that the design live load does not exceed 30 pounds per square foot (1.44 kPa) and the design dead load does not exceed 20 pounds per ... , A "span options" calculator allows selection of multiple species and grades for comparison purposes. Read the Tutorial for Understanding Loads and Using Span Tables. FULL SCREEN The Span Calculator is supported by the Softwood Lumber Board. Download the Apps, spans and required E values tabulated for 20 psf shall be permitted to be adjusted in accordance with the fol-lowing table: For roof live loads of 12 psf or 16 psf Table Multiply tabulated Multiply required number span by E-value by 12 psf 16 psf 12 psf 16 psf R-1 1.17 1.07 0.96 0.99 R-5 1.14 1.06 0.89 0.96 , to the span in inches divided by 360, and is based on live load only. The load duration factor, C D, is 1.0. Listed spans are for wet-service conditions, pressure-treated Southern Pine floor/deck joists, MC > 19%. Check sources of supply for available grades and sizes. Maximum spans were calculated using design values effective June 1, 2013., Western Wood Products Association 2 Centerpointe Drive, STE 360 Lake Oswego, OR 97035 Phone: 503-224-3930 Fax: 503-224-3935 Email: [email protected], An interior 2×4 beam – made up of two 2x4s nailed together – can span up to 3’ 1” without support beneath a set of joists for a home no greater than 20’ wide and supporting no more than 1 floor. For homes that are 28’ wide, a double 2×4 can support a span of 2’ 8”. For a home 36’ in width, a span of 2’ 5” is possible., This span table excerpt shows two possible sizes of built-up floor beams (2 X 10 and 2 X 12). The full table shows more lumber sizes. It also shows the maximum that the beam can span for various numbers of such pieces of lumber built together (this is indicated by 3-ply, 4-ply and 5-ply). A 3-ply with 2 X 10s would mean that three 2 X 10s are ..., When building a deck with 7-ft. joists, you know the beam can span somewhere between 7-7 and 8-0, but you don’t know exactly where. Check with your local code official, or simply drop back to the shorter value in the table and assume the allowable span is 7-7. Section R507.6 calls for the built-up beams to be fastened together with a minimum ..., Versatile and strong, suitable for lumber framing projects. Each piece of this lumber meets the highest quality grading standards. Actual size: dimensions at time of manufacture. Product dimensions will vary depending on moisture content. Optional Accessories. Specifications. Nominal Dimensions. 2 in x 10 in x 20 ft. Grade., Second Step: Refer to the Deck Beam Span Table below to assist in determining the maximum span of a given beam between posts. Obviously, the larger the beam, the greater the distance it can span between posts. A Redwood 4x6 beam should span no more than 6' between supporting posts. Beam Span Table. Beam Span between Posts or Ledgers., An interior 2×4 beam - made up of two 2x4s nailed together - can span up to 3' 1" without support beneath a set of joists for a home no greater than 20' wide and supporting no more than 1 floor. For homes that are 28' wide, a double 2×4 can support a span of 2' 8". For a home 36' in width, a span of 2' 5" is possible., They cannot be used for timber products produced by any other timber manufacturer regardless of similarity of species or design. TFG Timber Framers Guild, 116 Pleasant Street, Suite 334 Easthampton, MA 01027 USA Tel: 833-862-7376 Email: [email protected]. requirements of the Building Code of Australia. , Design values for Western softwood structural lumber are computed in accordance with ASTM standards based on clear-wood tests or on tests of full-size pieces in specific grades, conducted in cooperation with the USDA Forest Products Laboratory. The applicable standards are ASTM D2555 and ASTM D245 for clear wood and ASTM D1990 for full …, ASD Simple Span Load Table for 64 mm . K-Series Joist Substitutes – S.I. Units LRFD Outriggers Load Table for 64 mm . K-Series Joist Substitutes – S.I. Units ASD Outriggers Load Table for 64 mm . K-Series Joist Substitutes – S.I. Units A Top Chord Extension or Extended End, K-Series, shall be a joist accessory that shall be designed in accordance …, Maximum spans in feet-inches. Maximum Spans. 1. for Southern Pine . Effective June 1, 2013 . Table 12 Wet-Service Floor Joists (MC>19%) – 40 psf live load, 10 psf dead load, 360 deflection . Size Select . Spacing In. o.c. Dense Structural Select Structural NonDense Select Structural No.1 Dense No.1 NonDense No.2 Dense NonDense No.3 12 , Raised Wood Floors. Raised floor homes look great and protect homeowners against risks from flooding and subsiding soils. Outdoor DIY. Both DIYers and building professionals will like these garden and outdoor living ideas and plans., SFPA's updated collection of span tables for Southern Pine headers and beams is comprised of 38 tables. Twenty of the tables provide size selections for various beam spans and loading combinations for Southern Pine dimension lumber and Southern Pine glued laminated timber, available for six applications., 6 nov. 2013 ... As production builders begin to redesign plans based on the new design values or span tables, the higher cost of moving to deeper members or ..., 2. Find the span of supported roof framing (i.e. span of trusses or rafters that frame into the header) that equals or exceeds the intended application. 3. Find the clear opening that equals or exceeds the intended application. 4. Select product size for the appropriate grade, clear opening and span of supported roof framing. , Example: In the rafter span table below, the highlighted cell (13-0) indicates that a 2" x 8" Douglas Fir rafter, with a grade of #2, spaced 24" apart, can have a maximum span of 13 feet - 0 inches (13-0) if designed for a live load of 20 Psf, and dead load of 20 Psf. Rafter Span Tables, Logged. #3. April 16, 2013, 04:52:53 PM. You are unlikely to find charts for that - especially for rough cut. I looked up in Charlie Wings' "From the Ground Up" and found a span chart for 37.5 psf load (sleeping room) and rough cut 4x6 @ 48" o/c. Doug Fir can span 10'- 10". You should be OK for just about any decent structural timbers., New Southern Pine Span Tables Available Online. The Southern Forest Products Association (SFPA) has posted online its comprehensive set of updated span tables, all based on the new design values for visually graded Southern Pine dimension lumber that became effective June 1, 2013., Logged. #3. April 16, 2013, 04:52:53 PM. You are unlikely to find charts for that - especially for rough cut. I looked up in Charlie Wings' "From the Ground Up" and found a span chart for 37.5 psf load (sleeping room) and rough cut 4x6 @ 48" o/c. Doug Fir can span 10'- 10". You should be OK for just about any decent structural timbers., • See Assumptions for Table Development beginning on page 2 for details on design assumptions made to generate these tables. • Interpolation between clear openings is permitted. • The design span is assumed to be the clear opening plus 1/2 the required bearing length at each end. Floor Live Load = 30 psf Floor Dead Load = 10 psf , Lastly, multiply the number of rafters by 2 to get both sides of the roof or the roof’s slopes. For example, your house is 40 feet long with a 24″ rafter spacing. So the first thing you need to do is convert 30 ft to inches. 40ft x 12″ = 480″ (length in inches) ÷ 24″ on-center = 20 rafters., 15-1. On February 11, 2013, the Southern Pine Inspection Bureau published new design values for all sizes and grades of visually graded Southern Pine dimension lumber in. Supplement No.13 to the 2002 Standard Grading Rules for Southern Pine Lumber. These maximum spans were calculated using the new design values which …, down, or in a continuous span across supports. An appropriate balanced beam combination, such as 24F-V5, may be used for either simple-span or continuous-span applications. The majority of stock glued laminated timber is manufactured with camber, but some stock members – especially balanced layup combinations – are manufactured without camber., Joist Spans. Douglas fir 2-by-10 joists graded as "Structural Select" allows joist spans up to 21 feet for a live load of 30 pounds per square foot when spaced 12 inches apart, 19 feet 1 inch for 16 inch spacing and 16 feet 8 inches for 24 inch spacing. A live load of 60 pounds per square foot demands more support and shorter spans. , Simplified maximum span tables for selected visual and mechanical grades of Southern Pine lumber in sizes 2×4 thru 2×12. Listed are 46 tables based on common loading …, spans and required E values tabulated for 20 psf shall be permitted to be adjusted in accordance with the fol-lowing table: For roof live loads of 12 psf or 16 psf Table Multiply tabulated Multiply required number span by E-value by 12 psf 16 psf 12 psf 16 psf R-1 1.17 1.07 0.96 0.99 R-5 1.14 1.06 0.89 0.96, But the 2015 IRC included a new one (Table R507.5) that will make it easy for deck builders to spec a joist size for a given span and joist spacing. The table includes spans for common lumber species used for deck framing like southern pine, Douglas fir, hem-fir, redwood, western cedar and other species. The table accounts for wet service ...