Under OSHA 1926.706, how wide must the limited access zone be on a masonry wall under construction?
Safety
Question · Easy
OSHA fall heights, to scale
Short
On which side of a masonry wall must the OSHA limited access zone be established?
At what masonry wall height does OSHA 1926.706 require bracing unless the wall is otherwise adequately supported?
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How must a masonry saw blade be guarded under OSHA 1926 Subpart Q?
Under OSHA 1926.250, what is the maximum height of a loose brick stack, and how must it be tapered above 4 feet?
Question · Medium
Six feet: a hard-hat anthem
How must masonry blocks stacked higher than 6 feet be tapered under OSHA 1926.250?
At what height above a lower level must a mason on a walking-working surface be protected from falling under OSHA construction fall-protection rules?
What is the preferred OSHA Table 1 control when cutting CMU or brick with a stationary masonry saw?
A 10-foot-high CMU wall is being laid. When may the OSHA limited access zone be removed?
Question · Hard
Who is permitted inside the OSHA limited access zone while a masonry wall is being built?
What are the actual (specified) dimensions of a nominal 8 × 8 × 16 concrete masonry unit made for a 3/8-inch mortar joint?
Concrete Block
Which ASTM specification covers loadbearing concrete masonry units used in structural CMU walls?
How many nominal 8 × 8 × 16 CMU are required per 100 square feet of wall, not including waste?
Unless otherwise required, how are hollow CMU generally bedded in mortar under TMS 602-13?
In running bond, what is the usual minimum overlap of CMU in successive courses?
What is the primary structural purpose of a grouted CMU bond beam?
Should concrete masonry units be wetted before they are laid?
Unless otherwise required, what mortar-joint thickness does TMS 602-13 specify for unit masonry?
Which CMU shape is the standard two-core unit used for the field of a running-bond wall?
How must the starting course of hollow CMU be bedded on a concrete foundation under TMS 602-13?
A CMU wall is 40 feet long and 8 feet high, with no openings. Using 1.125 nominal 8 × 8 × 16 units per square foot and a 5 percent waste factor, how many blocks should be ordered?
A 40-foot by 8-foot 8-inch CMU wall has one 8-foot by 4-foot window. Using 1.125 units per square foot and no waste, how many stretchers are required?
Under TMS 602-13 (ACI 530.1-13), when must cleanouts be provided for a grout pour?
Unless otherwise required, what slump does TMS 602-13 specify for conventional masonry grout at placement?
What is the practical difference between fine grout and coarse grout under ASTM C476 and TMS 602-13?
Under TMS 402/602-13, which CMU cells must be filled with grout?
For masonry exposed to earth or weather, what is the minimum grout cover on a No. 5 or smaller reinforcing bar under TMS 402-13?
Why are vertical control joints used in CMU walls?
Compared with running bond, what extra requirement applies when CMU is laid in stack bond?
Prefabricated joint reinforcement in an 8-inch CMU wall is commonly placed at what vertical spacing?
When must vertical reinforcing bars be in place relative to grouting a CMU cell?
What distinguishes low-lift grouting from high-lift grouting of a CMU wall?
After masonry grout is placed in a pour more than 12 inches high, what consolidation step does TMS 602-13 require?
What is the minimum clear distance between reinforcing steel and masonry when coarse grout is used, per TMS 602-13?
In TMS 402-13 and IBC 2018 Chapter 21, what does f'm represent?
Under TMS 402-13 Appendix A empirical design, what is the minimum nominal thickness of a masonry bearing wall more than one story high?
Under TMS 402-13 empirical design, what limits apply to an unreinforced masonry parapet?
A 250-square-foot 8-inch CMU wall will be solid grouted. Using 1.12 cubic yards of grout per 100 square feet, how many cubic yards of grout are required before waste?
A 400-square-foot 8-inch CMU wall is grouted only in vertical cells at 32 inches on center. Using 0.25 cubic yards of grout per 100 square feet for that spacing, how many cubic yards are required before waste?
A 400-square-foot 8-inch CMU wall will be laid with 3/8-inch face-shell joints. Using 8.5 cubic feet of mortar per 100 square feet, how many cubic feet of mortar are required before waste?
A 24-foot-long by 12-foot-high 8-inch CMU wall has two 4-foot by 4-foot windows. Using 1.125 units per square foot and a 5 percent waste factor, how many blocks should be ordered (round up)?
TMS 602-13 allows a grout lift up to 12 feet 8 inches only when which set of conditions is met?
For a solid-grouted CMU wall, what are the TMS 602-13 cleanout size and horizontal spacing limits?
IBC 2018 Section 2107.2.1 says the length of a lapped splice of reinforcing bars shall be not less than how many bar diameters?
For a special reinforced masonry shear wall laid in running bond (TMS 402-13 Section 7.3.2.6), what is the maximum spacing of the required vertical reinforcement?
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