List the precautions construction personnel should take to protect employees working below scaffolding
What will be an ideal response?
To protect workers below the level of a scaffold, construction companies should take the following precautions: 1) barricade the area below the scaffold, 2) erect toeboards along the edge of any scaffold that is higher than 10 feet above the next lower surface, 3) use paneling or screening erected from the toeboard or platform to the top of the guardrail to prevent objects from falling off the scaffold, 4) erect guardrails with openings too small to allow objects to pass through and fall to a lower level, and 5) erect canopy structures, debris nets, or catch platforms to catch or deflect objects falling from the scaffold.
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PROBLEM 2.41 A brass bolt (Eb = 15 ? 106 psi) of -in. diameter is fitted inside a steel tube (Es = 29 ? 106 psi) of -in. outer diameter and -in. wall thickness. After the nut has been fit snugly, it is tightened one-quarter of a full turn. Knowing that the bolt is single-threaded with a 0.1-in. pitch, determine the normal stress (a) in the bolt, (b) in the tube.
What is the direction of lay required based on the symbol shown in Figure 5?
a. Parallel
b. Perpendicular
c. Radial
d. Multidirectional
e. None of the above
Female horses are called ____________________ until they are about 5 years old.
Fill in the blank(s) with the appropriate word(s).
What does an alloy of tin and copper make, an alloy of zinc and copper?
A) Bronze and brass B) High temperature solder and galvanizing compound C) Brass and bronze D) Bronze and die cast