On a plan, a grade of 2% means which change in elevation along a 100-foot horizontal run?
Earthwork Surveying
Question · Easy
How deep before you need a trench box?
Short
What does a survey station designation of 12+50 represent?
A benchmark on a drainage project is primarily used to:
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Blue-top stakes set during grading typically indicate:
Cut earthwork means material that is:
Fill embankment for a drainage swale should generally be placed and compacted in:
A standard Proctor test is used primarily to determine:
Existing ground elevation is 102.40 and design subgrade is 100.15 at the same point. What is the cut?
Cross-sections on drainage plans are used mainly to:
Question · Medium
A ditch invert drops from elevation 84.00 at station 10+00 to 82.50 at station 11+00. What is the average grade between those stations?
When compacting cohesive embankment soils, field density is most commonly reported as a percentage of:
Question · Hard
If embankment material is too wet relative to optimum moisture, the usual construction response is to:
A contour line on a topographic map connects points of:
Unsuitable material encountered in a drainage excavation is generally:
The invert of a drainage pipe is the:
A laser level or rotating laser on a drainage job is most often used to:
Borrow material is best defined as:
A side slope expressed as 3:1 (H:V) means:
Before placing select bedding for a storm pipe, the trench bottom should be:
Shrinkage in earthwork estimating accounts for the fact that:
If a drainage structure hub is marked “IE 76.35,” the 76.35 most likely refers to:
Finish grading of a roadside ditch should primarily ensure that:
A plan calls for a 0.40% minimum longitudinal grade on a paved gutter. Over 250 feet of gutter, the minimum total drop is:
Subgrade for curb and gutter or pavement drainage work is the:
Offset stakes are commonly used when:
A pipe trench is excavated 0.30 feet too deep relative to design invert. The preferred correction before setting pipe is usually to:
When existing elevation is 97.80 and design grade is 99.10, the earthwork at that point is:
Slump of fresh concrete is primarily a measure of:
Concrete
Air entrainment is added to concrete mainly to improve resistance to:
Adding extra water at the jobsite to increase slump beyond the approved mix design typically:
Proper curing of concrete is important because it:
Cold-weather concrete placement practices are intended mainly to:
Consolidation of concrete in forms by vibration is done to:
A cold joint in concrete construction is typically created when:
For most structural drainage concrete, compressive strength acceptance is commonly based on tests of:
Segregation of concrete during placement means:
Hot-weather concreting concerns for curb and gutter primarily include:
Honeycombing in formed concrete is best described as:
Formwork for a concrete headwall must be:
A retarding admixture is used in concrete primarily to:
When placing concrete for a continuous curb, construction joints should be located:
Cover over reinforcing steel in a concrete drainage structure is important because it:
If cylinder tests for a cast-in-place drainage structure fall below the specified strength, the engineer may require:
Bleed water on a concrete surface after placement is:
The primary drainage function of a curb and gutter section is to:
Curbs And Gutters
A barrier curb is designed mainly to:
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