Test
WWC1 Unit 10 - Construction Methods
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Preguntas del test (41)
1 How far away must spoil be kept from the side of a trench?
- A1.2 m
- B0.9 m
- C0.6 m
- D0.4 m
2 Which of the following is used to measure the depth of an excavation?
- Agrade stick
- Bsurvey transit
- Cbatter board
- Dstring line
3 What is the slope ratio to use when excavating Trench walls?
- A1 horizontal : 3 vertical
- B3/4 horizontal : 1 vertical
- C1 horizontal : 1 vertical
- D1 horizontal : 3/4 vertical
4 What is the minimum number of consecutive control points needed when setting up a string line or batter boards?
- A1
- B2
- C3
- DThe amount required to effectively align a grade pole with the excavation
5 What is the name of the traffic control zone just before the work area?
- Abuffer zone
- Btransition area
- Ctermination area
- Dadvance warning area
6 Which one of the following considerations determines whether excavations are done manually or by machine?
- Adepth of trench
- Bmunicipal regulations
- Ctype of pipe to install
- Denvironmental impact
7 Who are traffic control measures designed to protect?
- Apedestrians, motorists and operators
- Bgeneral public
- Cwastewater system operations
- Dcrew members
8 When is it appropriate to use hydraulic jetting or trench sinking as a compaction technique?
- AWhen using sand for backfill material
- BOn aggregate with low moisture content
- CDuring dryer weather conditions
- DWhile trenching with a hydraulic excavator
9 Where should material excavated from the trench be placed?
- APiled back at least 0.6 m from the trench
- BRemoved from the site
- CPiled close along the sides of the trench
- DPiled on the street side of the trench whenever possible
10 At what depth is shoring normally required?
- Aover 2m
- Bover 1.2 m
- Cover 1 m
- Dat 0.5 m
11 At what depth must excavations be shored?
- A1.m
- B1.2 m
- C1.4 m
- D1.6 m
12 When applying bedding material, which of the following is the most important consideration?
- Aplacing bedding around the pipe
- Bpreventing pipe from shifting
- Cpipe protection
- Dall of above
13 Which of the following statements about a No Mechanical Dig Zone is correct?
- Azone extends 1 m on both sides of pipe
- Bzone applies when overhead obstructions are encountered
- Czone applies when water level is high
- Dzone surrounds pipe 1 m
14 Which of the following is the best choice for preventing sloughing while trench is excavated?
- Aheavy metal shoring
- Bwooden shoring
- Clight weight aluminum panels
- Dscrew jack struts
15 Which one of the following is used as an alternative to a string line as a control of pipe excavation?
- Afixed beam laser
- Bgeographical positioning system (GPS)
- Cvariable beam laser
- Dradio controlled telemetry
16 What is the purpose of using control measures during pipe excavations?
- Ato ensure compliance with project plans
- Bto ensure depth and alignment
- Cto minimize mistakes
- Dall of above
17 What is the purpose of Batter Boards?
- AControl trench depth and pipe elevation
- BDivert traffic away from excavation
- COffset measurement to trench center line
- DNone of the above
18 Which of the following conditions calls for the use of a surveyor on a pipe excavation project?
- Afield changes to grade
- Bcurving pipe alignment
- Cwide trenches
- Dall of above
19 When trying to identify existing utility lines, which one of the following is NOT a recommended source of information?
- AMinistry of Environment
- BBC ONE Call
- Cmunicipal government records
- Dlocal utility records
20 Which one of the following is NOT a characteristic of an ideal form of backfill?
- Aconsists of heavy material
- Blacking debris
- Ceasily compacted
- Dfree
21 Which one of the following is the ideal pipe bedding?
- ACrushed gravel
- BClay
- CNative soil
- DConcrete
22 Which one of the following is the most common form of construction for wastewater collection projects?
- Atrenching
- Bpipe bursting and replacement
- Chydraulic jetting
- Dtunneling
23 What is the purpose of using a string line?
- Ato lay pipe in straight line
- Bto guide excavation of cut
- Cto control laying of pipe on grade
- Dboth 2 and 3
24 What is the slope ratio to use when excavating Trench walls?
- A1.5 horizontal to 1 vertical
- B1 horizontal to 1 vertical
- C3/4 horizontal to 1 vertical
- D0.5 horizontal to 1 vertical
25 What is the first area of a traffic control zone?
- AAdvance working area
- BTransition area
- CBuffer space
- DTrailer zone
26 What is the primary concern when backfilling pipe?
- APreventing displacement damage to the pipe
- BReducing the overburden on the pipe
- CLoading the pipe up to design loads
- DLoading the pipe to values 1.5 times larger than the expected loads
27 Which one of the following conditions calls for traffic control measures?
- Awhenever traffic is affected by system work
- Bwhen maintenance work occurs in vicinity of traffic
- Cwhen crew members feel it may be necessary
- Dwhen maintenance vehicles must leave and enter traffic
28 Which one of the following is NOT a true difference between native and imported backfill material?
- Aimported fill is not graded, native fill consists of graded material
- Bimported fill is expensive, native fill is free
- Cimported fill is brought to site, native is stored on site
- Dimported fill has known qualities, native fill is unknown
29 When would a surveyor be beneficial to use?
- ATo establish alignment and grade for each section of pipe where the pipe alignment is curved horizontally or vertically (or both)
- BOn jobs with a very wide trench
- CTo establish new control points when field changes in grade or alignment occur
- DAll of the above
30 Which one of the following is NOT a valid requirement of constructed shoring?
- Atop waler must be no more than 0.5 m from road surface
- Ball lumber must be number one grade
- Cmaximum distance between walers is 1.2 m
- Dbottom waler can be no more than 0.61 m from ground
31 How many control points are required for controlling pipe excavation?
- A2
- B3
- C4
- D5
32 While backfilling a trench with soil, which of the following measure should be used?
- ABackfill in lifts until the pipe is covered by approximately 300 mm
- BDo it the easiest way possible
- CBackfill the trench completely to the surface, then tamp down the top soil
- DAlways use imported backfill material
33 What does the term "cut' refer to?
- Adepth of pipe invert
- Btrench width
- Ctrench depth
- Dvolume of material removed from trench
34 If a street is excavated, when are signs and barricades needed?
- Afor the duration of any excavation
- Bwhen directed by an engineer
- Cwhen half the street is to be cut
- Dwhen the opening will be left over night
35 Which one of the following is NOT an accurate description of trench width?
- Ameasures across the bottom of the trench
- Bwidth is constant when walls are horizontal
- Cwidth varies when trench is vertical
- Dall of above
36 Which one of the following correctly defines a "traffic control zone"?
- AThe area where work-crews and equipment are moving amongst the flow of vehicular and pedestrian traffic
- BThe area between the first advance warning sign and the point beyond the work area where traffic is no longer affected
- CThe boundaries of where work is to be conducted
- DNone of the above
37 When selecting bedding material, which of the following is NOT a factor to consider?
- Adepth of trench
- Btrench drainage
- Ctype of soil excavated
- Dpipe material
38 Which of the following best describes a no mechanical dig zone?
- A1 metre buffer on either side of the buried utility
- BTransition area from asphalt to gravel
- CArea where mobile equipment cannot access due to low hanging trees and shrubs
- DUsing underground pipe locators prior to excavating
39 What are acceptable ways to protect workers from trench collapse?
- ASloping
- BBenching
- CAccess to ladders in close proximity to workers
- D1 and 2
40 Under what condition may shoring be required immediately at start of excavation?
- Ahydrostatic pressure
- Bwhenever requested by excavating crew
- Cearthquake prone areas
- Dclay soil conditions
41 Which one of the following is used for bedding material?
- A¾ inch crushed rock
- Bsand
- C½ inch gravel
- Dmixed gravel and sand
Información
- Descripción
- Test sobre WWC1 Unit 10 - Construction Methods, creado por Cam Llewellyn el 11/04/2025.
- Autor
- Cam Llewellyn
- Idioma
- English
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