LA 1-60 MUNICIPAL & PUBLIC WORKS CONSTRUCTION
LA 1-60 MUNICIPAL & PUBLIC WORKS
CONSTRUCTION | UPDATED EXAMINATION
QUESTIONS AND VERIFIED CORRECT
ANSWERS | ALREADY GRADED A+
Before permitting the contractor to proceed, the inspector should check that the plans
have been approved and signed by the engineer - CORRECT ANSWER -
There are four major problem areas in sewer construction which can cause future
functional problems and expense: poor pipe sub grade, poor joints, poor water
consolidation or mechanical compaction of backfill and poor records - CORRECT
ANSWER -
Balling a line-The operation of passing an inflated rubber ball, which is slightly less than
the diameter of the pipe, though a sewer line - CORRECT ANSWER -
House connection sewer- house connection sewers are sometimes referred to as lateral
sewer - CORRECT ANSWER -
Invert- a line on centerline at the inside bottom of a pipe or conduit, also commonly
referred to as the flow line - CORRECT ANSWER -
Saddle- a connections to a mainline sewer where no wye or tee exists, made by
breaking into it and attaching a specially fabricated spur pipe - CORRECT ANSWER -
Spring line- a circular pipe filled with water to its spring line would be half full -
CORRECT ANSWER -
Soffit- the inside top of a pipe or box-section conduit - CORRECT ANSWER -
One of the most important elements of excavating for sewer construction is to maintain
the specified width of the trench at the top of the pipe - CORRECT ANSWER -
Although off centered pipe in the trench is not desirable, it is permitted provided the
maximum allowable trench width is not exceeded - CORRECT ANSWER -
Loose material in the bottom of the trench must be removed to solid, undisturbed
ground before pipe bedding is placed - CORRECT ANSWER -
1|Page
,LA 1-60 MUNICIPAL & PUBLIC WORKS CONSTRUCTION
OSHA construction safety orders give minimum requirements - CORRECT ANSWER --
beware of disturbed ground
-take special precautions where moisture is present
-guard against cabing hazard created by vibration and load from highway traffic
-install upper trench jacks first
-protect all workers in trenches
Dewatering-ground water may be pumped and discharged into a storm drain or sewer
only if so allowed by the storm drain or sewer owner and jurisdiction water quality
agency - CORRECT ANSWER -
Survey procedures are established to set stakes for sewer construction on an offset line
at intervals of 25 feet - CORRECT ANSWER -
Grade sheet details should be read with extreme care - CORRECT ANSWER -
If excessively wet, soft, spongy, unstable or similarly unsuitable material is encountered
at the pipe bedding depth, the unsuitable material must be removed and be replaced
with imported bedding material to provide a stable foundation - CORRECT ANSWER -
Adequate measures must be taken to avoid floating the pipe or to deflect it laterally
when placing and consolidating the concrete - CORRECT ANSWER -
Pipe Laying and Jointing- The inspector must check the plans for locations of tees and
wyes for house connections. Tees should be located at the station or to the nearest joint
downstream of the house connection end - CORRECT ANSWER -
All bell and spigot pipe should be laid upgrade, with the bell ends of the pipe pointed
upstream - CORRECT ANSWER -
A line should be pulled across a minimum of three pipes or stations for the line and
grade check - CORRECT ANSWER -
As a general rule, concrete bottom slabs for manholes will be placed at least 24 hrs
before any brick is laid there on - CORRECT ANSWER -
Improperly placed stubs require expensive manhole remodeling when future sewers are
constructed. Steps are not installed, maintenance forces use portable ladders -
CORRECT ANSWER -
The jet pipe should be kept at least 2 ft away from the pipeline since the bedding maybe
washed from under the pipe - CORRECT ANSWER -
Procedural requirements- permanent resurfacing will normally be withheld pending
completion of the air test - CORRECT ANSWER -
2|Page
,LA 1-60 MUNICIPAL & PUBLIC WORKS CONSTRUCTION
Local depressions- a warped surface of gutter or pavement which diverts water flow
more efficiently into an adjacent catch basin inlet - CORRECT ANSWER -
Longitudinal seams should be placed at the sides of the pipe - CORRECT ANSWER -
Stulls or struts are required to support the arch of CMP during the placement and
compaction of backfill - CORRECT ANSWER -
Bushing- Protect cable or conductor insulation from damage
Conduit- a metal tube in which electric conductors are installed for protection
Electrolier-street light assembly complete, including foundation, electrolier standard,
luminaire arm, luminaire, etc
Luminaire- the lamp housing including the optical and socket assemblies(and ballast if
so specified)
NEMA- national electrical manufacturers association
PE cell- light sensitive switch inserted in the circuit that energizes the street light
Pull box- a concrete or metal box in which conduit runs terminate - CORRECT
ANSWER -
Signal standards, controllers and appurtenances must be located only as shown on the
plans, all deviations must be approved in the field by the traffic engineer - CORRECT
ANSWER -
Inspectors are authorized to make certain minor changes in street lighting installations
in accordance with the following procedures; however, in no case may an inspector
permit a change to be made which would result in a change of cost to the agency
without prior approval - CORRECT ANSWER -
The specifications may require the contractor to submit the "as built" plans. If this is the
case, the inspector must continue to maintain the "as built" plans in order to verify the
contractors submittal - CORRECT ANSWER -
Street lighting and traffic signal conduit must be installed prior to any subsequent work
which will cover it, examples of which follow:
-construction of concrete sidewalks
-construction of alley intersections
-construction of integral curb returns and spandrels
-construction of electrolier foundations - CORRECT ANSWER -
3|Page
, LA 1-60 MUNICIPAL & PUBLIC WORKS CONSTRUCTION
Street lighting conduit is generally installed behind curb just after the curb is constructed
- CORRECT ANSWER -
Approved compression connectors are required for all street lighting conductor splices -
CORRECT ANSWER -
Spliced are authorized only in pull boxes and light standard bases. Pull boxes for street
lighting systems must not be installed in any driveway pavement - CORRECT ANSWER
-
When there is an urgent need, electroliers or traffic signals may be set after the
foundation is 24hrs old, provided that type lll cement is used in the concrete mixture or
class (660-b-3750) is used - CORRECT ANSWER -
Conduits must be bonded with a copper ground strap equal in conductivity to a #8
copper wire. Conduit ends are not to be left open during any phrase of construction -
CORRECT ANSWER -
Conduit bushings must be installed on all conduit ends before conductors are pulled
through the conduits. They should be approximately equally spaced , but not over 200 ft
apart - CORRECT ANSWER -
For these reasons, conductors must be pulled directly from the reels into the conduit.
Under no circumstances should a conductor be dragged over the ground or exposed to
any abuse which might damage the insulation. A splice is never permitted to be installed
in a conduit - CORRECT ANSWER -
Photo/electric cells must be oriented to the north. Electroliers may be set after
foundations have cured for at least 3 days - CORRECT ANSWER -
Mulch materials are similar to fertilizers and soil additives except that they're spread at a
specified thickness on the surface of the finished grade after planting or seeding -
CORRECT ANSWER -
Sprinklers are installed after the main and lateral pressure tests have been completed
and sprinklers head spacing should not exceed the maximum shown on the plans or
recommended. - CORRECT ANSWER -
Solvent welding is the preferred method of jointing. PVC pipe to be jointed must be cut
square. All cuts should be free of burrs or shavings. - CORRECT ANSWER -
The automatic controller location should be on a concrete foundation and outside the
coverage pattern of the irrigation system. Do not permit wires or hydraulic tubing to be
cast directly in concrete - CORRECT ANSWER -
4|Page
LA 1-60 MUNICIPAL & PUBLIC WORKS
CONSTRUCTION | UPDATED EXAMINATION
QUESTIONS AND VERIFIED CORRECT
ANSWERS | ALREADY GRADED A+
Before permitting the contractor to proceed, the inspector should check that the plans
have been approved and signed by the engineer - CORRECT ANSWER -
There are four major problem areas in sewer construction which can cause future
functional problems and expense: poor pipe sub grade, poor joints, poor water
consolidation or mechanical compaction of backfill and poor records - CORRECT
ANSWER -
Balling a line-The operation of passing an inflated rubber ball, which is slightly less than
the diameter of the pipe, though a sewer line - CORRECT ANSWER -
House connection sewer- house connection sewers are sometimes referred to as lateral
sewer - CORRECT ANSWER -
Invert- a line on centerline at the inside bottom of a pipe or conduit, also commonly
referred to as the flow line - CORRECT ANSWER -
Saddle- a connections to a mainline sewer where no wye or tee exists, made by
breaking into it and attaching a specially fabricated spur pipe - CORRECT ANSWER -
Spring line- a circular pipe filled with water to its spring line would be half full -
CORRECT ANSWER -
Soffit- the inside top of a pipe or box-section conduit - CORRECT ANSWER -
One of the most important elements of excavating for sewer construction is to maintain
the specified width of the trench at the top of the pipe - CORRECT ANSWER -
Although off centered pipe in the trench is not desirable, it is permitted provided the
maximum allowable trench width is not exceeded - CORRECT ANSWER -
Loose material in the bottom of the trench must be removed to solid, undisturbed
ground before pipe bedding is placed - CORRECT ANSWER -
1|Page
,LA 1-60 MUNICIPAL & PUBLIC WORKS CONSTRUCTION
OSHA construction safety orders give minimum requirements - CORRECT ANSWER --
beware of disturbed ground
-take special precautions where moisture is present
-guard against cabing hazard created by vibration and load from highway traffic
-install upper trench jacks first
-protect all workers in trenches
Dewatering-ground water may be pumped and discharged into a storm drain or sewer
only if so allowed by the storm drain or sewer owner and jurisdiction water quality
agency - CORRECT ANSWER -
Survey procedures are established to set stakes for sewer construction on an offset line
at intervals of 25 feet - CORRECT ANSWER -
Grade sheet details should be read with extreme care - CORRECT ANSWER -
If excessively wet, soft, spongy, unstable or similarly unsuitable material is encountered
at the pipe bedding depth, the unsuitable material must be removed and be replaced
with imported bedding material to provide a stable foundation - CORRECT ANSWER -
Adequate measures must be taken to avoid floating the pipe or to deflect it laterally
when placing and consolidating the concrete - CORRECT ANSWER -
Pipe Laying and Jointing- The inspector must check the plans for locations of tees and
wyes for house connections. Tees should be located at the station or to the nearest joint
downstream of the house connection end - CORRECT ANSWER -
All bell and spigot pipe should be laid upgrade, with the bell ends of the pipe pointed
upstream - CORRECT ANSWER -
A line should be pulled across a minimum of three pipes or stations for the line and
grade check - CORRECT ANSWER -
As a general rule, concrete bottom slabs for manholes will be placed at least 24 hrs
before any brick is laid there on - CORRECT ANSWER -
Improperly placed stubs require expensive manhole remodeling when future sewers are
constructed. Steps are not installed, maintenance forces use portable ladders -
CORRECT ANSWER -
The jet pipe should be kept at least 2 ft away from the pipeline since the bedding maybe
washed from under the pipe - CORRECT ANSWER -
Procedural requirements- permanent resurfacing will normally be withheld pending
completion of the air test - CORRECT ANSWER -
2|Page
,LA 1-60 MUNICIPAL & PUBLIC WORKS CONSTRUCTION
Local depressions- a warped surface of gutter or pavement which diverts water flow
more efficiently into an adjacent catch basin inlet - CORRECT ANSWER -
Longitudinal seams should be placed at the sides of the pipe - CORRECT ANSWER -
Stulls or struts are required to support the arch of CMP during the placement and
compaction of backfill - CORRECT ANSWER -
Bushing- Protect cable or conductor insulation from damage
Conduit- a metal tube in which electric conductors are installed for protection
Electrolier-street light assembly complete, including foundation, electrolier standard,
luminaire arm, luminaire, etc
Luminaire- the lamp housing including the optical and socket assemblies(and ballast if
so specified)
NEMA- national electrical manufacturers association
PE cell- light sensitive switch inserted in the circuit that energizes the street light
Pull box- a concrete or metal box in which conduit runs terminate - CORRECT
ANSWER -
Signal standards, controllers and appurtenances must be located only as shown on the
plans, all deviations must be approved in the field by the traffic engineer - CORRECT
ANSWER -
Inspectors are authorized to make certain minor changes in street lighting installations
in accordance with the following procedures; however, in no case may an inspector
permit a change to be made which would result in a change of cost to the agency
without prior approval - CORRECT ANSWER -
The specifications may require the contractor to submit the "as built" plans. If this is the
case, the inspector must continue to maintain the "as built" plans in order to verify the
contractors submittal - CORRECT ANSWER -
Street lighting and traffic signal conduit must be installed prior to any subsequent work
which will cover it, examples of which follow:
-construction of concrete sidewalks
-construction of alley intersections
-construction of integral curb returns and spandrels
-construction of electrolier foundations - CORRECT ANSWER -
3|Page
, LA 1-60 MUNICIPAL & PUBLIC WORKS CONSTRUCTION
Street lighting conduit is generally installed behind curb just after the curb is constructed
- CORRECT ANSWER -
Approved compression connectors are required for all street lighting conductor splices -
CORRECT ANSWER -
Spliced are authorized only in pull boxes and light standard bases. Pull boxes for street
lighting systems must not be installed in any driveway pavement - CORRECT ANSWER
-
When there is an urgent need, electroliers or traffic signals may be set after the
foundation is 24hrs old, provided that type lll cement is used in the concrete mixture or
class (660-b-3750) is used - CORRECT ANSWER -
Conduits must be bonded with a copper ground strap equal in conductivity to a #8
copper wire. Conduit ends are not to be left open during any phrase of construction -
CORRECT ANSWER -
Conduit bushings must be installed on all conduit ends before conductors are pulled
through the conduits. They should be approximately equally spaced , but not over 200 ft
apart - CORRECT ANSWER -
For these reasons, conductors must be pulled directly from the reels into the conduit.
Under no circumstances should a conductor be dragged over the ground or exposed to
any abuse which might damage the insulation. A splice is never permitted to be installed
in a conduit - CORRECT ANSWER -
Photo/electric cells must be oriented to the north. Electroliers may be set after
foundations have cured for at least 3 days - CORRECT ANSWER -
Mulch materials are similar to fertilizers and soil additives except that they're spread at a
specified thickness on the surface of the finished grade after planting or seeding -
CORRECT ANSWER -
Sprinklers are installed after the main and lateral pressure tests have been completed
and sprinklers head spacing should not exceed the maximum shown on the plans or
recommended. - CORRECT ANSWER -
Solvent welding is the preferred method of jointing. PVC pipe to be jointed must be cut
square. All cuts should be free of burrs or shavings. - CORRECT ANSWER -
The automatic controller location should be on a concrete foundation and outside the
coverage pattern of the irrigation system. Do not permit wires or hydraulic tubing to be
cast directly in concrete - CORRECT ANSWER -
4|Page
