Excavations
True or False: Spoil piles can be used to barricade one side of a trench?
True.
What are the 3 types of ladders we typically use?
Step ladders, Extension ladders, and Job built ladders.
True or False: Goggles are an acceptable substitution for a face shield?
False.
True or False: You can rig from the forks as long as you inspect the rigging.
False
What is the name of the process that gets rid of air voids in the concrete?
Vibration or consolidation
At what depth do we need a ladder?
4 feet
At what change in elevation is a step or ramp required? (In inches)
19"
What type of glove should be worn when handling concrete?
Impervious, Chemical, or Rubber.
Only ____ and ____ employees my operate equipment
Qualified and Authorized
What are the 4 basic components that make up concrete?
Water, Cement, Sand, and Rock.
At what depth do we need to shore an excavation?
5 feet
How close does the eye wash station need to be to the concrete placement?
Within 10 seconds of unimpeded foot traffic.
What is the name of the foot protection that must be worn when operating a jumping jack?
Metatarsal.
What class of forklift is known as an "all terrain forklift"?
Class 7
How fast should we be pulling the concrete vibrator out of a wall placement?
One inch per second
What is the maximum allowable slope for type C soil?
1-1/2 : 1
OSHA states that a stair rail system with a handrail is required on stairs that have ___ steps or more, including the landing.
4
The OSHA construction standard says that when noise levels reach ____ decibels at a time waited 8 hours, hearing protection is required.
90
For site equipment, what does ROPS stand for?
Roll Over Protection System
What are the 3 types of Mechanical Vibration?
Internal, External, and Surface.
In a trench 100' long and over 4' deep, how many ladders would be required?
2
On a job-built ladder, the inside-to-inside width of a single rung ladder should be between ____ and _____?
16" and 20"
When disturbing concrete, per Table one, what are the three elements to take into account when determining if a respirator is required?
What tool is being used.
Indoors or outdoors.
How long will the activity last.
According to our silver book, as a general rule, how far away should equipment be from power lines?
20', per the silver book.
What does HRWR stand for?
High Range Water Reducer