excavating part

Question 1

is any man-made cut, cavity, trench, or depression in the Earth’s surface formed by earth removal.

Answer 1

excavation

Question 2

defined as a narrow excavation (in relation to its length) made below the surface of the ground.

Answer 2

trench

Question 3

3 types of protective systems for excavations/trenching

Answer 3

1. slope or bench trench walls
2. shore trench walls with support
3. shield trench walls with trench boxes

Question 4

means the sides of the hole open out from the excavation.

Answer 4

slope or bench trench walls

Question 5

the type of soil determines the required angle

Answer 5

slope or bench trench walls

Question 6

this supports the walls of the excavation.

Answer 6

shore trench walls with support

Question 7

shoring is made up of walls, cross-braces and uprights, and must be installed from the top down and removed from the bottom up.

Answer 7

shore trench walls with support

Question 8

the worker is only protected while in the box.

Answer 8

shield trench walls with trench boxes

Question 9

is the dismantling, razing, destroying or wrecking of any building or structure or any part thereof.

Answer 9

demolition

Question 10

basic principles for demolition safety (3)

Answer 10

1. plan ahead to get the job done safely
2. provide the right protection or equipment
3. train all, employees about hazards and how to use the equipment safely.

Question 11

is any work that involves burning, welding, using fire or spark-producing tools, or that produces a source of ignition.

Answer 11

hotwork

Question 12

process of permanently joining two or more materials together.

Answer 12

welding

Question 13

is a metal-joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint.

Answer 13

brazing

Question 14

process in which two or more items (usually metal) are joined together by melting and putting a filler metal (solder) into the joint.

Answer 14

soldering

Question 15

separation or opening of a physical object, into two or more portions, through application of an acutely directed force.

Answer 15

cutting

Question 16

an abrasive machining process that uses a grinding wheel as the cutting tool. it is also a subset of cutting.

Answer 16

grinding

Question 17

true metal-cutting process

Answer 17

grinding

Question 18

cutting process that uses a drill bit to cut a hole of circular cross-section in solid materials.

Answer 18

drilling

Question 19

basic hot works hazards control (3)

Answer 19

1. permit system / job safety analysis
2. fire watch and emergency response plan
3. personal protective equipment