Answer:
1312 linear feet
Step-by-step explanation:
There are 98/14 = 7 spaces 14 ft wide in the width of the building. If a girder is placed at the edge of each such space, then 8 girders are needed. Their total length will be ...
8 × 164 ft = 1312 ft . . . . linear feet of girder
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Alternate solution
It seems possible the building might be constructed so that the girder is in the center of each 14-foot space. In that case, only 7 girders are needed, for a total length of 7×164 = 1148 feet.