Steel and Timber Design - Modules 6-9 Review

A comprehensive set of practice questions covering allowable stresses, steel beam design, axially loaded members, and steel connectors (bolts, rivets, and welds) based on Modules 6 through 9.

What does a bearing-type connection rely on for load transfer?

Direct bearing of the bolt against the connected plate

What is the standard size for bolt holes relative to the bolt diameter?

$1.6\,mm$ (or $1/16\,in.$) larger than the bolt diameter

Define the "snug-tight" condition in steel connections.

A condition where all plies in a joint are in firm contact

What is the allowable tensile stress on the gross area ($F_t$) for bolted or riveted tension members?

$$0.6F_y$$

What is the allowable tensile stress on the net area ($F_t$) for fracture in tension members?

$$0.5F_u$$

What is the allowable shear stress for weld metal ($F_v$)?

$$0.3F_u$$

Which two main structural requirements must be checked after a trial steel section is selected for a beam?

Shear stress and deflection

What is the common locally available yield strength ($F_y$) for A36 structural steel?

$36\,ksi$ ($248\,MPa$)

What formula is used to determine the slenderness ratio of a column?

$$KL/r$$

What term describes the undesirable behavior in a lap joint caused by non-aligned force centroids?

Bending due to eccentricity

What is the effective throat size ($a$) of an equal-leg fillet weld with leg size $z$?

$$0.707z$$

What is the main characteristic of an HP-Shape steel section?

The webs and flanges have the same nominal thickness

What is the primary method used to produce WT-Shapes (Structural Tees)?

They are cut from W-Shapes

Which design philosophy compares working stresses from service loads to allowable stresses using a single factor of safety?

Allowable Stress Design (ASD)

What is the preferred bolt spacing ($s$) based on the nominal bolt diameter ($d$)?

$$3d$$

What is the approximate minimum edge distance for bolts?

$$1.5d$$

What material property primarily dictates the required size of steel sections?

Yield Strength or Yield Point ($F_y$)

Block shear capacity is a combination of which two types of stress?

Tension and shear

What is the structural function of a washer in a bolted connection?

To prevent scoring or galling of the members during tightening

Which welding process uses a flux-coated electrode to shield the weld?

Shielded Metal Arc Welding (SMAW)

What characterizes S-Shapes, formerly known as I-beams?

Relatively narrow flanges with sloping interior faces

What happens to a hot-driven rivet as it cools?

It shrinks and provides a clamping force in the joint

What is the ASTM classification for common or unfinished bolts?

A307

When selecting a section from the Steel Tables after meeting the Section Modulus requirement, what is the selection criteria?

Choose the lightest of all possible sections that meet the requirement