Highway Inspcetion Nicet lvl 1 Flashcards
Terms
Of the Following statements relating to the new bell and spigot pipe being laid in a trench, the one that is CORRECT is that?
When Building a new line using bell and spigot pipe, you start from the downstream end.
What is Vitrified Pipe made of?
Clay
The Invert of a sewer pipe is Its
Inner Bottom
A cradle is usually placed under a sewer pipe when the
Soil is poor
A monolithic Sewer is a
Reinforced concrete cast in place sewer
The best reason for placing manholes on sewers is to?
Provide access for inspection and maintenance
The sheeting for a sheeted sewer is ordered left in place after the sewer has been built and back filled, What is the best reason for ordering the sheeting left in its place?
This minimizes the settlement outside the sheeted area.
The Two most frequently used types of sheeting for normal soil conditions and average depths are?
A soldier beams With Horizontal sheeting and vertical wood sheeting for bracing.
A specification for a new sewer requires that the pavement NOT be restored for a period of At-least 6 Months after back fill is placed. The best reason for this requirement is?
Minimize the settlement of the Pavement.
in reinforced concrete sewers, the reinforcing steel must have a minimum cover of concrete, What is the best Reason for this requirement?
Protect the Reinforced steel from Corrosion.
As used in relation to sewers, Infiltration refers to the?
Inflow of ground water into the Sewer
A BAD effect of infiltration in a sanitary sewer is that it?
Tends to overload the Sewage Treatment plant
Manhole frames and covers are usually made of?
Cast Iron
A storm Sewer GENERALLY differs from a sanitary sewer in that a storm sewer ?
Generally Larger in size and carries little dry-weather flow.
The Spacing of rungs used for steps in a manhole is MOST Nearly ____ Inches?
12 Inches
Steel is Galvanized by coating it with?
ZINC
Well Points Would Most Likely be used in the Construction of sewer when the?
Water table is above the sewer.
The Purpose of jetting the well points in sewer construct-tion is too ?
Set The well points in place.
The Type of Soil in Which well points Operate Most Efficiently is
Sand
The Water-Cement Ratio of a concrete mix is USUALLY expressed in terms of
Gallons of water per bags of cement.
The effective Diameter of a Number 4 Reinforcing bar is Most Nearly___ Inches
1/2 Inch
The Primary Purpose of Curing Freshly Poured Concrete is too
Prevent Evaporation of the water from the Surface.
Of the Following, the material that may be used as the coarse
aggregate in ordinary port-land Cement is?
Crushed Rock
A bag of cement Weighs MOST Nearly____ Pounds?
94 Pounds
In 1:2:4 Ratio concrete mix the 2 stands for the quanity of?
Fine Aggregate
The Height of the Slump cone is ?
12 inches
As commonly used, 3000 pound concrete refers to 3000 pounds per ?
Square Inch
The Factor has the greatest effect
