Module 1: Introduction to Structural Analysis and Loads - Examples

A floor system carries the self-weight of the slab, movable office occupants, a permanently anchored mechanical unit, and earthquake inertia. Classify each action.

Columns are spaced $6.0\text{ m}$ by $8.0\text{ m}$ in a regular floor grid. Determine the tributary area of a typical interior column.

Use the same $6.0\text{ m}$ by $8.0\text{ m}$ grid. The slab terminates at the centerline of an exterior column along the $6.0\text{ m}$ direction. Determine its tributary area.

A one-way floor delivers a uniform service area load of $q=5.0\text{ kPa}$ to an interior beam with tributary width $b_t=3.5\text{ m}$. Determine the idealized line load.

An interior column has tributary area $48.0\text{ m}^2$. The floor load assigned to the column is $6.2\text{ kPa}$. Determine the floor contribution to the column axial load.

A roof deck is shown supported by joists, but the analytical model applies the full roof gravity load directly to the columns and leaves the joists and girders unloaded. Identify the modeling problem.

For an educational combination supplied as $U=1.2D+1.6L$, let the analysis effects be $D=120\text{ kN}$ and $L=80\text{ kN}$. Determine $U$.

Compare a simply supported beam with a continuous two-span beam when one support settles slightly and no member yields.