For the frame shown in the figures below you will develop seismic loads acting on the braced frame shown in isolation $($B$1-$B$4).$ Note the braced frames in the other direction shown on the floor plan do not appear in the perspective figure to avoid clutter, but they similarly form $2-$story $x-$braces going the full height of the structure.

Determine the following:

$($a$)$ The design acceleration response spectrum $($label all key values$).$ You can use the ATC hazard tool to get the MCER spectrum parameters $Ss$ and $S1$ but then you should calculate the design spectrum parameters, SDS and SDI, and draw the design spectrum by hand.

$($b$)$ The design base shear for the direction of earthquake loading parallel to the braced frame in question.

$($c$)$ The distribution of earthquake loading vertically up the height of the building acting on this frame $($note there are two frames sharing the load$).$

Building parameters:

Lateral Load Resisting System: Special Concentrically Braced Frame

Dead Loads: Roof: $55$ psf$,$ Levels $1-5$: $70$ psf$.$

Location: Use More Hall's location

The story heights are $12ft$ and the bay widths are $30ft.$

Occupancy: Office building, less than $300$ people congregated in one area.

Soil Type: Very Dense Soil$/$ Soft Rock.

For the frame shown in the figures below you will develop seismic loads acting on the braced frame shown in isolation $($B$1-$B$4).$ Note the braced frames in the other direction shown on the floor plan do not appear in the perspective figure to avoid clutter, but they similarly form $2-$story $x-$braces going the full height of the structure.

Determine the following:

$($a$)$ The design acceleration response spectrum $($label all key values$).$ You can use the ATC hazard tool to get the MCER spectrum parameters $Ss$ and $S1$ but then you should calculate the design spectrum parameters, SDS and SDI, and draw the design spectrum by hand.

$($b$)$ The design base shear for the direction of earthquake loading parallel to the braced frame in question.

$($c$)$ The distribution of earthquake loading vertically up the height of the building acting on this frame $($note there are two frames sharing the load$).$