C-12 Classification, Rules And Regulations Flashcards
The Contractor shall notify the Engineer, in writing, of his intent to begin work at least _____ hours before work is begun
72 hours
Obliterating Roads and Detours - unless otherwise specified in the special provisions, obliteration shall consist of placing an earth cover of not less than _____ in thickness , OR shall consist of rooting, plowing, pulverizing or scarifying to the bottom of the underlying base, whichever is lesser
6” or 0.5-foot
Obliterating Road and Detours- The bituminous material shall be broken up into pieces not larger than ______ in greatest dimension and mixed with an equal amount of underlying material.
0.33-foot ( 4” )
Existing concrete shall be removed to a depth of at least _____ below finished grade
3 feet
Removed concrete shall not be buried in areas where piling is to be placed within how many feet of trees, pipelines, poles, buildings or other permanent objects? ( Unless permitted by engineer?
10 feet
Can also be disposed in such locations that it will not present unsightly appearance from highway
Ditches and channels having a bottom with of less than 12 feet shall extend to a width of how many feet outside the slope lines ?
2 feet
All trees, existing stumps and roots within embankment areas where the grading plane is 2 FEET OR MORE above the natural ground shall be cut off not more than ______ above the natural ground at any point, or completely removed where a structure is to be constructed.
1 foot
Tree branches extending over the roadway and which hang within _____ of finished grade shall be cut off close to the boles in a workmanlike manner.
20 feet
Grade Tolerance- when the material to be placed on the grading plane is to be paid for by the TON, the grading plane at any point shall not vary more than ______ ABOVE OR BELOW the grade established by the engineer.
10% or 0.10- foot
Grade Tolerance- when the material to be placed on the grading plane is to be paid for by the CUBIC YARD, the grading plane at any point shall not vary more than ______ ABOVE the grade established by the engineer.
5% or 0.05-foot
Slopes- The average place of slopes shall conform with the plans and at no point on the completed slopes shall vary from the designated slope by more than _____ , measure at right angles to the slope. Except where excavation is in rock , no point shall vary more than _____ from designated slope.
0.5- foot
2 feet
All loose rocks larger than _____ inches in maximum dimension, roots and other debris on the surface of the slope shall be removed and disposed prior to cultivation or incorporation of straw
2 1/2”
Surplus of excavated material shall be used to what ?
Widen embankments uniformly
Flatten slopes
Disposed of along roadway as directed by engineer
Structure Backfilling- The thickness of each layer of backfilling shall not exceed 0.67-foot before compacting except when the compaction is done by ______&________ , said thickness shall not exceed 4 feet.
Ponding and jetting
No backfilling shall deposited against the back of concrete abutments , concrete retaining walls, or outside walls of cast-in-place structures until the concrete has developed a strength of not less than how many pounds or has been in place for how many days ?
2,500 lbs or 28 days
Slurry cement backfill - Slurry cement backfill may be used as structure backfill for pipe culverts , except that slurry backfill shall not be used as a structure backfill for what type of pipe culverts ?
Aluminum or aluminum-coated
Distance between outside culvert pipes and side of excavation shall be a minimum of ______ , for pipes up to AND including 42 inches in diameter
6 inches
Distance between outside culvert pipes and side of excavation shall be a minimum of ______ , for pipes more than 42 inches in diameter
1 foot
Not less than how many pounds of cement shall be used for each cubic yard ?
188 lbs
Excavation designated with a bottom width or less than 12 feet is classified as what type of excavation ?
Ditch excavation
Excavation designated with a bottom width of 12 feet or more is classified as what type of excavation ?
Roadway excavation
Lime treated material shall not be mixed or spread while the atmospheric pressure is below what temperature ?
35˚F
The rate of lime spread per linear foot of windrow or blanket shall not vary more than ___% from the designated rate
10%
Lime treated soil final compaction shall be completed within how many hours of final mixing ?
36 hours
