Band spacing—13 in. vertically.
Ultimate load—900,000 lb.
Point of failure about 2 ft. from top.
Remarks.—Concrete, at failure, considerably disintegrated, probably due to continuance of movement of machine after failure.
Test No. 4.
Marks on column—Box 4.
Reinforcement—eight 1-in. round bars vertically.
Hoops spaced 8 in. vertically.
Wire spirals as on other columns.
Total load at failure—1,260,000 lb.