SE-013 Stress Grades and Design Properties of Wood: 1 PDH

Description of the course / activity content:

This online PDH course provides guidance on stress grades and design properties for lumber, round timber, and ties.

Round timbers, ties, and lumber sawn from a log, regardless of species and size, are quite variable in mechanical properties. Pieces may differ in strength by several hundred percent. For simplicity and economy in use, pieces of wood of similar mechanical properties are placed in categories called stress grades, which are characterized by (a) one or more sorting criteria, (b) a set of properties for engineering design, and (c) a unique grade name. The most familiar system is that for lumber. Sorting criteria have also been established for round timbers and ties.

This course is based on Chapter 7 of the United States Department of Agriculture, Forest Service, Forest Products Laboratory, General Technical Report FPL–GTR–190 “Wood Handbook: Wood as an Engineering Material”.

This course is intended for use by civil and structural engineers, design and construction professionals, students and others interested in learning about stress grades and design properties of lumber, round timber and ties.

Learning Objectives:

Upon completion of this course, you will be able to:

• List the sawn lumber grading agency
• Understand the sawn lumber grading process, grouping of species and classification criteria
• Describe the visual and machine grading process and classifications
• Explain how properties of lumber are adjusted for design use
• Understand the design properties and stress grades for round timbers and ties

Refunds and Cancellation Policies

The course is accepted by the Professional Engineering boards in states listed on this page. In an unlikely case the course is not accepted by the board listed on this page, we will refund the full payment and will pay for you to take another course of equivalent monetary and PDH / CEU value

Length of the Course / Activity

This course is intended to be studied at self-pace and it should take on average of 1 hour to read and be able to comprehend the material to successfully past the online quiz

Course Quiz

To receive the certificate of completion for the above 1 PDH online course, you will need to take a 10 question multiple choice quiz based on the reference material supplied and pass with minimum score of 80%. There is no time limit for the quiz and it can be taken multiple times until a passing score of 80% is achieved

Certificate of Completion

Once you achieve a passing score of 80% on the quiz you will receive and be able to print your Certificate of Completion as a record of your continuing education. PDH Star will keep a record of your certificate for the duration as required by your state of licensure. You will be able to log on to your account and view and print your past Certificate of Completion

State Acceptance

This course is accepted in all states mandating continuing education:

AK, AL, AR, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, SC, SD, TN, TX, UT, VA, VT, WI, WV, and WY