Building on the joist question in Exercise 5, assume that WF girders sit atop steel columns which are 33′ apart and the joist span from girder to girder. How many joists will be in this 100′ square grid? You may want to draw a sketch for this question.

Data from Exercise 5

How many LF of bar joist are there in an area measuring 100′ × 100′ where the joists are 30 inches on center?