Planning & EstimatingQuestion 275 of 360
You are doing a material takeoff from an isometric of a bathroom group. The riser drops through one floor and makes three horizontal offsets, each requiring a pair of 90° bends. How many 90° elbows should you count for those offsets alone?
a.3
b.4
c.5
d.6
Explanation
Each offset uses a pair of 90° bends, and three offsets means 3 × 2 = 6 elbows. Counting fittings directly off the isometric keeps the takeoff accurate. Always tally each fitting type separately so the purchase order matches the drawing.
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