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This course accepted in:

 

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Abbreviations:

AOP-Areas of Practice

LAR-Laws & Rules

P.E.-Professional Engineers

 

Explore all PDH CEU CPC CPD and Webinars for Engineers

Determining Allowable Design Values for Wood

Course No. S-2001

Credit: 2 PDH

Course Fee: $57.90 Purchase course

Subject Matter Expert: Richard Nolan, P.E.

 

Overview

Wood is the most popular building material for residential homes and other smaller buildings. There are many types of wood products on the market used in the construction industry today. Some of the engineered wood products include I-joists, laminated veneer and glued laminated timber. However, the most familiar and well used is still sawn lumber. This course will provide the methodology for determining the allowable design values to use when designing sawn lumber components, such as beams, headers, trusses, floor joists, decking, etc. However, much of the same methodology and adjustment factors are also applicable to the other types of engineered lumber.

Safe design of wood components, such as beams, headers, floor joists, etc. requires the proper determination of design values. Reference design values that are listed among many sources need to be adjusted either upwards or downwards depending on the intended service, loading and support conditions of the wood. This course provides prescriptive guidance on how to determine allowable design values for wood.

This course demonstrates how to adjust the reference design values for the most significant factors. Methods for determining all the significant types of design values for wood will be taught which include bending, shear, compression (parallel & perpendicular to the grain), tension and deflection. Some of the major factors affecting the design values that will be explained include moisture content, temperature, beam stability, column stability, load duration, repetitive factor, etc. Pictures are provided to expound on the printed information. Realistic examples are included at the end of the slides that show how to size a header beam and determine the required number of header supports. This course includes a multiple-choice quiz (20 questions) at the end which is designed to enhance the understanding of the course material.

The methodology taught in this course is based on the National Design Specification for Wood Construction (NDSWC) published by the American Forest & Paper Association and the American Wood Council which is a recognized standard for designing wood dwellings. It is not necessary to acquire the NDSWC but it would be a valuable reference to have and would provide further insight into the course. A copy of the NDS can be purchased from www.amc.org.

The student must take a multiple-choice quiz consisting of twenty (20) questions at the end of this course to earn PDH credits.

 

Specific Knowledge or Skill Obtained

This course teaches the following specific knowledge and skills:

  • Know the difference between sawn and engineered wood products
  • Understand the difference between reference and allowable design values
  • Know the six most needed types of design values for wood
  • Know the ten most significant adjustment factors
  • Know how to determine the value of the adjustment factors
  • Know how to convert reference design values to allowable design values
  • Understand the concepts of perpendicular and parallel to the grain
  • Know how to size a header using all the critical design values (bending, shear, bearing, deflection)
  • Learn how to determine the proper number of header supports

 

Course

Click on the following link to the PDF document to review the course material before taking the quiz for credit.

Determining Allowable Design Values for Wood

 

Having trouble downloading the PDF file?

If clicking the link does not bring you to the PDF file, then right-click the link. Click "Save Target As" and save on your desktop. To view the file, double-click the icon on your desktop and return to this page to take the quiz. You may want to bookmark this page for your convenience. If you have questions, Live Support Chat can help.

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To receive PDH credit for this course, you must pass a multiple-choice quiz. Click the button below to Purchase Course and Take Quiz. To take the quiz, your computer must be set to accept cookies. See how to check your cookie settings.

 

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