The exterior wall in the east-west direction directly supports the floor joists.

The tributary width of load is approximately 6'-0". As assumed in Case 2, each rim

beam is considered to carry the loads at its level, including the weight of the brick

cladding since this is an exterior wall. The floor-to-floor height was specified as 10 feet.

In accordance with Table 7-1, the extent of wall to remove is the length between

intersecting walls or columns with a minimum of 2.4 meters. In this case intersecting

shear walls are located at 11'0" on center and this governs the length of wall to be

removed. This is illustrated in Figure F-12. Therefore, the rim beam must redistribute

the loads of an 11' section of exterior wall to the adjacent wall sections.

Since the window openings are not defined for this example, this illustration of

procedure will assume a section of wall with no window. The loads were calculated in

accordance with 3-2.4. Tables F-9 and F-10 show the check of acceptability criteria for

the rim beam and the supporting wall section.

The analysis shows that the 8x12 rim beam is not sufficient for the limit states

of bending and shear. In addition, the wall studs are insufficient for the concentrated

axial reactions. The span would require a 5.125" x 12.375" 20F SYP glue laminated

beam. The stud wall requires higher strength studs such as SYP select structural or

higher number of studs to redistribute the added short-term vertical reactions.

F-17

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