Module 4 Worked Examples: Combined Timber Stresses and Connections

Let the applicable parallel-to-grain property be $P=30\text{ MPa}$ and the perpendicular property be $Q=6\text{ MPa}$. Determine $N_\theta$ at $\theta=0^\circ$.

Using $P=30\text{ MPa}$ and $Q=6\text{ MPa}$, determine $N_\theta$ at $\theta=90^\circ$.

Using $P=30\text{ MPa}$ and $Q=6\text{ MPa}$, determine $N_\theta$ at $45^\circ$.

A code interaction equation for a timber member evaluates to $0.98$. How should the result be reported?

A connection carries $80\text{ kN}$ and four identical fasteners. Dividing gives $20\text{ kN}$ per fastener. Is the connection proven adequate?

A large stair opening interrupts a rectangular floor diaphragm between the loaded façade and the nearest shear wall. Identify the structural consequence.

A wall line contains wide glazing that leaves two short wood shear-wall segments. What should be reviewed before assuming the wall line can resist the design lateral force?

An architect proposes a concealed steel knife plate near the end of a glulam beam. List the main review items before detailing.

A deep timber beam is connected to a brittle façade component that restrains vertical cross-grain movement. Why is this risky?

For a timber beam-column, the applicable uniaxial compression-and-bending check has already been selected. Let $f_c=2.0\text{ MPa}$, $F_c'=8.0\text{ MPa}$, $f_b=5.0\text{ MPa}$, $F_b'=12.0\text{ MPa}$, and $F_{cE}=20.0\text{ MPa}$. Evaluate

A bolted timber splice transfers $80\text{ kN}$. A preliminary equal-share analysis of four fasteners gives $20\text{ kN}$ per fastener. Explain the complete review sequence before any connection capacity is reported.

For a member under axial tension and uniaxial bending, let $f_t=2.0\text{ MPa}$, $F_t'=10.0\text{ MPa}$, $f_b=7.0\text{ MPa}$, $F_b^*=15.0\text{ MPa}$, and $F_b^{**}=12.0\text{ MPa}$. Evaluate both NDS/NSCP combined-action checks.