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Who Should Attend

This course is designed for individuals who never had the opportunity to learn wood design basics in a university-level course but are involved in the design, construction, and inspection of wood buildings. The primary focus and objectives of this course are a mastery of wood design basics and understanding of the many factors routinely used and required by the 2012 National Design Specification (NDS®) for Wood Construction.

What Will You Learn

This course will focus on practical code-conforming design of wood structures based on provisions of the 2012 NDS®. At the beginning of the course, we will review the mechanical properties of lumber, the derivation of allowable design stresses, and safety factors that are involved in the design process. The role of moisture content on shrinkage and swelling that can impact the performance of wood structural elements or components in-service will be demonstrated by examples. We will design simple elements showing what factors apply to the allowable design properties of lumber and timbers and explain why the various factors apply to a design situation. The methodology of lateral load design to resist wind and seismic loads will be presented. The design methodology for diaphragms and shear walls will be demonstrated by examples.

The objectives of this course are a mastery of wood design basics and understanding of the many factors routinely used and required by the 2012 National Design Specification for Wood Construction (ANSI/AWC NDS- 2012). All design calculations will be based on our strict interpretation of the ANSI/AWC NDS-2012. In addition to presenting designs that are code conforming, the instructors will discuss “good practice” when it may apply to worked examples. Three hours will be devoted to structural testing demonstrations and related discussion at the Brooks Forest Products Research Center.

The course notebook will contain the structural analyses and designs presented at the course, thereby relieving the participants of extensive note taking. Participants will receive a certificate for 1.6 Continuing Education Units (CEUs) equivalent to 16 hours of instruction. The registration fee includes lunches, refreshment breaks, and the new 2012 Wood Design Package containing the following publications:

  • ANSI/AWC NDS-2012 National Design Specification (NDS) for Wood Construction – with Commentary,

  • ANSI/AWC SDPWS-08 – Special Design Provisions for Wind and Seismic (SDPWS) with Commentary, and

  • ASD/LRFD Manual for Engineered Wood Construction, 2012 Edition.

Cover Photos (Courtesy of Cates Engineering Ltd.) Mixed-use residential/retail complex with 5 stor , ype 3A wood framed construction on top of a podium and two levels of parking.

Course Outline and Schedule

Wednesday, October 10

9:00 – 10:00 a.m. 10:00 – 11:00 a.m.

On-site check-in and registration

LumberBasics, Mechanical Properties, and Basis of Allowable Stresses for Dimension Lumber

11:00 a.m. – 12:00 p.m. Joist Design Demonstration—General Design Criteria for Wooden Beams and Applying the NDS Design Factors

12:00 – 1:00 p.m. 1:00 – 1:50 p.m. 1:50 – 2:25 p.m. 2:25 – 2:40 p.m. 2:40 – 3:50 p.m. 3:50 – 4:00 p.m. 4:00 – 5:00 p.m.

Lunch Design of Multi-Ply Headers and Girders Design of Rafters with a Ridge Board Break Glulam Beam Design Break

Design of Multi-Ply Beams (Headers) with Twisting Potential

Thursday, October 11 8:00 – 9:00 a.m. 9:00 – 10:15 a.m.

Column Design

Design of 2x4 Stud Wall (Wind + Snow + Dead Load Example)

10:15 – 10:30 a.m. 10:30 a.m. – 12:00 p.m.


Nail Connection Design--Lateral Loading (Rafter Thrust and Wall Girt Examples)

12:00 – 1:00 p.m. 1:00 – 2:00 p.m.


Nail Connection Design—Withdrawal Loading (Ceiling and Truss Uplift Design Examples)

2:00 – 5:00 p.m.

Structural Testing Demonstration and Tour at the Brooks Forest Products Center

Friday, October 12

8:00 – 9:00 a.m. 9:00 – 9:15 a.m. 9:15 – 10:40 a.m. 10:40 – 11:45 a.m.

Design of Bolted Connections Break Basics of Diaphragm and Shear Wall Design Overview of 2012 NDS Changes

11:45 a.m. – 12:00 p.m. Course Evaluation and CEU Certificates

Lodging and Travel Information

Lodging The Inn at Virginia Tech and Skelton Conference Center is located at 901 Prices Fork Road in Blacksburg, Virginia. The Inn is the only hotel located on the Virginia Tech campus and offers convenient surroundings and state-of-the-art technology. The world-class hotel and conference center sits on 25 lush acres where you’ll find Preston’s restaurant, featuring

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