PDH Quiz – Mast Climbing Platform Collapse in Austin, Texas

1.	The tower mast sections were 32 ¼” wide, 32 ¼” deep and _____ high?
		5’
		8’
2.	According to Figure 1, which module/s collapsed?
		North and south
		Only north
3.	The full form of AMC
		American Mast Climbers
		Authorized Mast Climbers
4.	The damage to the deck module #N4 is believed to have happened during the fall when it hit the wall on the 7^th floor?
		True
		False
5.	Which software is used for structural analysis?
		Ansys Mechanical
		STAAD.Pro v8i
6.	The load chart specified a safe uniformly distributed load of 5,400 lbs.
		True
		False
7.	The _________ of the bolt is reduced by approximately 20% if the threads are included in the shear plane?
		Shear strength
		Tensile strength
8.	According Figure 6, how many buckets of mortar is mentioned at the north side?
		50
		20
9.	What does LRFD stands for?
		Load and Resistance Failure Design
		Load and Resistance Factor Design
10.	Yield stress of HSS steel tubes was assumed to be 46 ksi.
		True
		False

Mast Climbing Platform Collapse in Austin, Texas