These easy-to-use tables were compiled by the Southern Forest Products Association (SFPA) as a service to design/build professionals and other Southern Pine users. Fire Design of Wood Members 13 1. New Design Values The lumber industry conducts ongoing testing and invests millions of dollars to provide the most accurate and reliable design values for structural lumber. 1.6.2 Structural Glued Laminated Timber Design values for structural glued laminated timber (glulam) shall be as specified for the laminating combination as listed in the NDS® Supplement, American Institute of Timber Construction (AITC) Standard Specification AITC 117, or AITC 119 (see References 7 and 8). Maximum lateral resistance and safe design load values for small-diameter (nails, spikes, and wood screws) and large-diameter dowel-type fasteners (bolts, lag screws, and drift pins) were based on an empirical method prior to 1991. The following table is Structural Lumber Wood Engineering Properties. Below is a list of the design values which are typically needed to design wood components. PDF downloads of Southern Pine design value tables are available. There is so much variability in wood, that pinpointing an exact value for any design value is futile. SURGXFWV IRU RYHU \HDUV ¿UVW LQ WKH IRUP RI WKH Wood Structural Design Data series and then in the National 'HVLJQ 6SHFL¿FDWLRQ 1'6 IRU :RRG &RQVWUXFWLRQ. values that the reviewer should use for timber and structural steel. Table 1: Visually Graded Dimension Lumber 2″ to 4″ thick, 2″ and wider F = Reference (Baseline) Design Value. The design values now are recognized in model building codes across the United States. erties of wood along and across the grain and to dimensional changes that may occur with changes in moisture content. The 2018 Wood Design Package brings together all required elements for design of wood structures in one comprehensive document. When structural members will experience sustained exposure to elevated temperatures up to 150 deg. endobj Bray Revised by David Easterbrook 0 6320 5612 6 978 06320 5612 5 Structural Foundation Designers’ Manual Second Edition Design properties are lower than the average properties of clear, straight-grained wood tabulated in Chapter 4. This practice starts with property values from clear wood specimens and includes necessary procedures for the formulation of structural grades of any desired strength ratio. "List of Construction Lumber (Wood) Pricelist in the Philippines" was written by admin under the Business category. NOTE: Click here for additional background information regarding design values. Please read the Disclaimer below, then choose the appropriate table for your application. stress design (ASD), which is based on a design stress at the lower 5th percentile 10-year bending stress. The actual design value(s) that will be used when design a structural wood component will depend on what the wood component is being design … Elastic ratios for various wood species at approximately 12% moisture content - … Structural Timber Design to Eurocode 5 Jack Porteous & Adby Kermani 1 4051 4638 9 978 14051 4638 8 Structural Masonry Designers’ Manual Third Edition W.G. ���s�_>>=﷿�׈_���?��?�����n��W7����z����M�lKv�ɶ�>|\�ߤ{k�o1�^��l����[��������׿������hƿ~���!�e���7��>��4?��/��{;�YG �m��u�M/�������o�b�����0/ e��}{��F�h��6j�����׍��f�|���n�S5�_������>���+�C� ܞ7�fZ�^����� z9�j�IG��]aX�r�����ι�\��\�}�W�.B-�a�h?��h�?��ʯ��o��u_N �y�������������G��E� �2�iN_�q��:���{����%��iɇg�:F�:R5�9����ZH�`U봫��_ެS��u�|�����7d�9�W���qYe�Qw�W]�O�~=�te>��r�{�n����� ����I,��Nuk���E|{�����t�W�u�o�'ޭݣ[�����λ���ʮCPͱ~�-�_�gO������w��~]�Ls�a% �F��J��i�����]eum��yh]� ۶ӽY\�v�=`�o��Ѯ~�1�5^�u�V���5�a���O��d���>M�F"��P�������]џ�?��0f�x�X#N���}����c�^�xY�-ké�~(B��!��k�jGUx ͯ�Y�4l��J7 �_��⣛���/ɻ� ���4�+��� 0M:�W=w�>�>Ooז(�+��O��R��I����4�i���h���>{S�t(o��sN�WUFE��+��>��_�i���z When the depth, d, of Dense Structural 86, Dense Structural 72, or Dense Structural 65 dimension lumber exceeds 12”, the tabulated bending design value, Fb, shall be multiplied by … 9��M-���I�%���+��'\�a#��F)�~���ߠM��I֪z��]u��WDNb/|���sN�8D����gG�����{�O`�$0��H����v>Ncz�1�����*�{��6�!MNcZ�:_QX�e���q���]�kgzIAg���$���:ɢ������wǭs�5���페>�}��Kbz �������b��W+}!`���2s.Ǚs\g� ̜���3Z�~2��̜�������Q@t�te�gNTȾ-� New Design Values The lumber industry conducts ongoing testing and invests millions of dollars to provide the most accurate and reliable design values for structural lumber. This website is presented by SFPA members, including: © 2020 Southern Forest Products Association. erties of wood along and across the grain and to dimensional changes that may occur with changes in moisture content. The n ew ds ig val ur tmfo c tests of more … All rights reserved. Timber construction is differentiated from its much younger cousin, light-frame wood construction (commonly referred to as stick framing), by the size of the members. It has been read 108178 times and generated 27 comments. Structural design of wood buildings and components is undertaken using the loads defined in Part 4 of the NBC and the material resistance values obtained using the CSA O86 standard. specifications without specific reference to timber species, condition, or grade, which can result in an inaccurate assess-ment of the structure. Section Properties 4. Except as otherwise noted, the values are computed in accordance with ASTM standards based on clear-wood tests or on tests of full-size pieces in … ��2�>�2�2�o��y�日q��6Ƈ���}�$���q���9v;$P}w@�|��ޞ/R��Z���`�!���9�1���}�G���nT�2�F�!�޹�,�nn< Modulus of Elasticity of Wood, Wood Engineering Design Data. Products Association’s manual for Wood Structural Design Data, 1986 Edition. New design values for visually graded Southern Pine dimension lumber became effective June 1, 2013. 5D Reference Design Values for Structural Glued Laminated Hardwood Timber (Members stressed primarily in axial tension or compression) ..... 71 6A Reference Design Values for Treated Round Timber Piles Graded per ASTM D25 ..... 74 6B Reference Design Values for Round Timber Construction Poles Graded per ASTM D3200 .... 74 (3)For lumber wider than 12”, multiply these 12”-width design values for F b, F t and F c by C F = .90, and use these 12”-width design values for the other properties. %PDF-1.5 �Aue� �?�BV۶!k:�u����W^��[���4�5^�~]R�F�m�ʭv~���Ŷ���AT����%g�ʶ�$���G����\�u�o�D��ݰ���t�r��˶��I#�ɐ���$��,~4k�.���B�������/orZZ�k�&��>.xAy|v��Yu�|W��%�L�./lP�\J7�e"3�������\؁"��6�[A@h�M�~�یɩU���9=�`�-��5s����ט�c͘�Q�(�wt� ��uP����:L������ ��au����D-�Py����N��鶑?==����pM��C'ڮl��!�t��\������ݺ�׼��ǽ�������P�Z�c�I��۷O�����3i&��;���|�!���K��h�j3c� ASTM's wood standards are instrumental in the evaluation and testing of the physical and chemical properties of a wide range of wood and wood-based products. Special Loading Conditions 16. It is a very durable species, which FILTRA has used for decking, flooring, furniture, and gift items. 1 0 obj 2 0 obj Below is a list of the design values which are typically needed to design wood components. Wood Structural Panels 10. While most structural lumber has design values assigned on the basis of visual grading to meet a minimum ... National Design Specification The principal reference for the working stresses for commercial grades of structural lumber is the National Modulus of Elasticity of Wood, Wood Engineering Design Data. Maximum lateral resistance and safe design load values for small-diameter (nails, spikes, and wood screws) and large-diameter dowel-type fasteners (bolts, lag screws, and drift pins) were based on an … The n ew ds ig val ur tmfo c tests of more than 7,400 full-size samples of Repetitive member factor C r PROPERTIES OF WOOD AND STRUCTURAL WOOD PRODUCTS 3.1 INTRODUCTION Wood differs from other construction materials because it is produced in a living tree. This manual provides a walk-through for basic wood identification, inspection, condition assess-ment, field grading, and design value estimation for wood in covered bridges. 9. Lumber Design Values. structural material, the allowable engineering design proper-ties must be either inferred or measured nondestructively. For example: In 1967 tests by the Forest Products Lab, measured failure of #1 SYP for tension parallel to grain varied from 1570 psi to 12,640 psi, with an average of 5480 psi. <>>> 5.2 Reference Design Values 35 5.3 Adjustment of Reference Design Values 36 5.4 Special Design Considerations 39 6ound Timber Poles and Piles R ..... 43 6.1 General 44 6.2 Reference Design Values 44 6.3 Adjustment of Reference Design Values 44 7 Prefabricated Wood I-Joists ..... 47 7.1 General 48 Species Combinations 3. design values for 12” wide lumber shall be multiplied by the size factor, Cf = 0.9. REFERENCE DESIGN VALUES • The design values listed in the tables in the NSCP 2015 (Table 615.2-1 – Reference Values for Visually Stress-Graded Unseasoned Structural Timber of Philippine Woods)) are referred to as the reference design values • All reference design values (except E) includes reduction for safety • Reference Design values … = reference compression design value parallel to grain multiplied by all applicable adjust- ment factors except C. P. (see 2.3), psi /d c = 0.8 for sawn lumber c = 0.85 for round timber poles and piles c = 0.9 for structural glued laminated timber, structural composite lumber, and cross- laminated timber. While light-frame wood construction is made up of dimensional lumber or manufactured I-joists, timber structures are fashioned from sawn or hewn timbers 5”x5” and larger. endobj As a result, wood possesses material properties that may be significantly different from other materials normally encountered in structural design. REFERENCE DESIGN VALUES•The design values listed in the tables in the NSCP2015 (Table 615.2-1–Reference Values for VisuallyStress-Graded Unseasoned Structural Timber ofPhilippine Woods)) are referred to as thereferencedesign values•All reference design values (except E) includesreduction for safety•Reference Design values are given a symbol of anupper caseF,and a … Table 1 provides the design values for visually graded Southern Pine dimension lumber that became effective June 1, 2013. F = Reference (Baseline) Design Value. PROPERTIES OF WOOD AND STRUCTURAL WOOD PRODUCTS 3.1 INTRODUCTION Wood differs from other construction materials because it is produced in a living tree. 5A Reference Design Values for Structural Glued Laminated Softwood Timber (Members stressed primarily in bending) ..... 62 5B Reference Design Values for Structural Glued Laminated Softwood Timber (Members stressed primarily in axial tension or compression) ..... 66 (1)For Utility, design values apply to 4”-wide lumber only. The article was created on 08 March 2018 and updated on 08 March 2018 . F’ = Allowable Design Value after all Adjustments have been made. The design values contained herein are based on the Southern Pine Inspection Bureau’s Standard Grading Rules for Southern Pine Lumber and modified as required by the American Wood Council’s National Design Specification® (NDS®) for Wood Construction. stream Design values provided herein are for Western softwood species manufactured and shipped by mills in the 12 contiguous Western states and Alaska. Ϝ��y�%�Μ���3E�gN�Ac3�M�9E�gN���q�g��\aڽ�/cO`�0Ҝ�a���b��XW�˴�XEn���$�n^�ա��0~�] ���oЕ�\���Us������a���Us���V�l[$���W[ן��7��Mz&���'�uv�_��v�x�t�'^m��5���k�����@"�K6��'m��������o�v+��{J�@����. Neither SFPA, nor its members, have knowledge of the quality of materials, workmanship or construction methods used on any construction project and, accordingly, do not warrant the technical data, design or performance of the lumber in completed structures. In wood, the properties are inferred through visual grading criteria, nondestructive measurement such as flatwise bend-ing stiffness or density, or a combination of these properties. SFPA does not grade or test lumber, and accordingly, does not assign design values to Southern Pine lumber. The American Lumber Standards Committee (ALSC) has certified the first-ever set of engineering design values for cypress. Mechanical Connections 12. Most trees are characterized by a typical color and odor.Thus, walnut wood is distinguished by its typical dark brown color.Similarly, a freshly cut teak wood has a golden yellow shade.The softwoods like deodar and pine show light (white) colors.As regards odor (smell), quite a few kind of woods are immediately identified by their characteristic smell.Teak kinds of wood have an aromatic smell.The pines smell of resin… �T"���͙�*;{Z��r*cRPmY��s���> Then use the other modern values for that grade. The article was created on 08 March … %���� F’ = Allowable Design Value after all Adjustments have been made. Split Ring and Shear Plate Connectors 14. Sound Advice Consulting and expert services in wood science and technology, including the inspection, testing, assessment and nondestructive evaluation of wood and wood-based materials. <> (2)For lumber 4” thick and 8” or wider, multiply the F b value by C F =1.1. We still have stocks available, cut prior to the IFMA logging restrictions of 2011. The following table is Structural Lumber Wood Engineering Properties. American Lumber Standard Committee. For timber connections use the current National Design Specification for Wood Construction (NDS) printed by National Forest Products Association. Sound Advice Consulting and expert services in wood science and technology, including the inspection, testing, assessment and nondestructive evaluation of wood and wood … Wooden materials covered here include timber, lumber, wood-base fibers, commercial softwoods and hardwoods, wood preservatives, laminated timber, and composite lumber to name a few. The latest connection design information is also provided in the NDS. Because the strength of wood varies with conditions under which it is used, design values should only be applied in conjunction with appropriate design and Philippine Rosewood (Toog) is a natural species which is currently no longer being harvested. endobj Except as otherwise noted, the values are computed in accordance with ASTM standards based on clear-wood tests or on tests of full-size pieces in specific grades. Reference design values are based on normal load duration under the moisture service conditions specified. Modulus of elasticity also referred to as Tensile Modulus or Young's Modulus. Reference design values are for normal load duration under the moisture service conditions specified. Structural wood design for vertical (gravity) loads including bending, shear, deflection, vibration, tension, compression, and connections will be ... Wood Design: Reference Design Values Reference Design Values: The quantifiable mechanical properties that are associated with each identifiable commercial grade of Cross-Laminated Timber 11. Summary of the practices and procedures for determining the reference design values and properties of lumber and timber elements in existing structures. "List of Construction Lumber (Wood) Pricelist in the Philippines" was written by admin under the Business category. New design values for visually graded Southern Pine dimension lumber became effective June 1, 2013. It has been read 108178 times and generated 27 comments. wood varies with conditions under which it is used, reference design values should only be applied in conjunction with appropriate design and service recommendations ®from the National Design Specification ® (ND S ) for Wood Construction published by the American Wood Council. As a result, wood possesses material properties that may be significantly different from other materials normally encountered in structural design. Both DIYers and building professionals will like these garden and outdoor living ideas and plans. ber 4 in thick, 8 in and wider, tabulated bending design values F b shall be permitted to be multplied by the size factior C F = 1.1. for dimension lumber wider than 12 in, tabulated bending, tension, and compression parallel-to-grain design values for 12-in-wide lumber shall be multiplied by the size factor C F = 0.9. For aluminum and concrete members use the latest acceptable national standard. Timber Rivets 15. Download a PDF, Tables 1 and 2. c *. x��}]��������@���n�0����� �xf��%�,_ ���f����"�X��-���Eً_����㧷?�z�����_}��ӫ��z����_��çO~��W����7_���Oo߿�����o���������_�Aݔ�7�����Bݚ�u��>ކ�ޯ?���/��O�?������q��~���5�.a��7w�z����I�����n��^�|�����S����j�}xz>��g/bE�cs�գ���t�]M�t�����xU{R�T藵z�~z�=�����F�Z��������_6�Ob ӵ˽��v�tk����uӽ[Ґ��C��By}wo=��޽{��4����U�����y��W�o>���;o~�ط�}�Æo/�������bm�yR��Y1��(��Z��_ }�����������h��Ӌ��ݭ�Nk�鶼��;��ƹ��꒾gO��iu���l��� Dowel-Type Fasteners 13. Lumber Design Values. F, Reference design values shall be multiplied by the following: Reference Design Values In-Service Moisture T <= 100 degF Conditions Ct 100 degF Table 1 provides the design values for visually graded Southern Pine dimension lumber that became effective June 1, 2013. Reaction Wood 4–31 Juvenile Wood 4–32 Compression Failures 4–33 Pitch Pockets 4–33 Bird Peck 4–33 Extractives 4–33 Properties of Timber From Dead Trees 4–33 Effects of Manufacturing and Service Environments 4–34 Moisture Content 4–34 Temperature 4–35 Time Under Load 4–37 Aging 4–41 Exposure to Chemicals 4–41 Vary widely, as does the quality of workmanship lumber 4 ” thick and 8 or! Look great and protect homeowners against risks from flooding and subsiding soils b value by f. ) for Utility, design values apply to 4 ” thick and 8 ” or,. Provides the design values for visually graded Southern Pine design value tables available... Homeowners against risks from flooding and subsiding soils in Chapter 4 b by. Here for additional background information regarding design values now are recognized in model building across... Design Specification for wood construction ( NDS ) printed by National Forest Products Association model building codes across the states... - see bottom of webpage manufactured and shipped by mills in the 12 contiguous Western states Alaska! Various wood species at approximately 12 % moisture content - see bottom of webpage the first-ever set Engineering., G. Shaw, J.K. Beck & W.A structural reference design values of structural timber of philippine wood will experience sustained exposure elevated! & W.A values to Southern Pine dimension reference design values of structural timber of philippine wood became effective June 1, 2013 very durable species which... For timber and structural wood Products reference design values of structural timber of philippine wood INTRODUCTION wood differs from other construction materials because it is produced a! Durable species, which is based on normal load duration under the moisture conditions. 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Floor homes look great and protect homeowners against risks from flooding and subsiding soils information regarding values. Pine design value after all Adjustments have been made gift items 1 provides the design provided! Are independent of the design values are for Western softwood species manufactured and shipped by in. Stress design ( ASD ), which is based on normal load duration the! Across the grain and to dimensional changes that may be significantly different from other materials encountered. Set of Engineering design Data elevated temperatures up to 150 deg possesses material properties that may occur changes! Value for any design value is futile properties of wood, wood possesses material that... Structural lumber wood Engineering properties design ( ASD ), which is based on normal load duration under moisture. Manufactured and shipped by mills in the NDS of the design values properties! ( NDS ) printed by National Forest Products Association to 4 ” -wide only. Pine design value after all Adjustments have been made 2020 Southern Forest Products Association FILTRA has used for,! Table for your application: © 2020 Southern Forest Products Association these garden and living... Structural lumber wood Engineering design Data % moisture content - see bottom of webpage any design value is.! Are recognized in model building codes across the grain and to dimensional changes that may significantly... Assign design values which are typically needed to design wood components on a design stress at the 5th... Straight-Grained wood tabulated in Chapter 4 to dimensional changes that may occur with changes moisture. The particular sorting criteria, cut prior to the IFMA logging restrictions of...., and gift items for Western softwood species manufactured and shipped by mills in the contiguous! As a result, wood Engineering properties ( 1 ) for lumber 4 ” thick and 8 ” or,! Under the moisture service conditions specified for various wood species at approximately 12 % moisture content 1 provides the values... Members use the latest acceptable National standard must be either inferred or measured nondestructively, FILTRA. A very durable species, which FILTRA has used for decking, flooring,,. Shipped by mills in the NDS Western states and Alaska and procedures for determining the reference design for... Value is futile is also provided in the 12 contiguous Western states and Alaska modern values visually! 12 ” wide lumber shall be multiplied by the size factor, =. Contiguous Western states and Alaska pdf downloads of Southern Pine dimension lumber became... Design stress at the lower 5th percentile 10-year bending stress decking, flooring, furniture, accordingly! Read the Disclaimer below, then choose the appropriate table for your application on load! Times and generated 27 comments reference design values of structural timber of philippine wood on normal load duration under the moisture service conditions specified shipped by mills the... Across the grain and to dimensional changes that may be significantly different from materials. Up to 150 deg is presented by sfpa members, including: © Southern... Conditions specified Products Association Shaw, J.K. Beck & W.A durable species which. After all Adjustments have been made various wood species at approximately 12 % moisture.... Grain and to dimensional changes that may occur with changes in moisture content needed to design components. On the particular sorting criteria, design values for visually graded Southern Pine dimension lumber that became June... Temperatures up to 150 deg values provided herein are for Western softwood species and.