Grays Harbor College Carpentry Students Build Floor Systems


Grays Harbor College Carpentry Technology students learned about floor systems this quarter. The class focused on two types of systems: dimensional lumber and engineered I-joist. Students also assembled a demonstration model of a truss system.

During the first four weeks of fall quarter, Carpentry students built, deconstructed, and rebuilt each type of floor system. The students also created the planning documents, estimations, and drawings that are required by building departments, employers, and clients. The remaining seven weeks of the quarter will focus on wall framing.

According to Kelly Williams, one of GHC’s Carpentry instructors, students tend to assemble the engineered I-joist system faster than the dimensional lumber system. “The I-joists are straighter and have fewer flaws, and we can order the joist in any length we desire. This makes the system more productive.”

Dimensional lumber, on the other hand, contains flaws like knots, twists, bows, cracks, and other inconsistencies. “So, it takes a little longer to build with 2x12s and maintain acceptable tolerances.” Williams explained. “Industry generally allows framing to vary from the plans by ¼”, but we strive for an 1/8-inch tolerance in our class.”

Find Out More About GHC’s Carpentry Technology Program

GHC’s Carpentry Technology program teaches the fundamental skills required for those seeking a career in construction or career advancement. Individuals wishing to explore carpentry for personal interests are also welcome.

Students in the Carpentry Technology program receive hands-on training with the tools of the trade in the various phases of residential construction, as well as building codes, drawings, estimation, math, and layout. Strong emphasis is placed on work habits and safety. Visit the Carpentry Technology program webpage for more info.

Workforce Funding

If you are enrolled or interested in enrolling in one of GHC’s workforce education and training programs, like Carpentry, you may be eligible for the Workforce Funding program, which can provide funding, resources, and support to help you meet your career goals.