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air hammer applied areas asphalt cement asphaltic concrete backfill base course base material binder binder material bituminous material bituminous surfaces blade bridge calcium chloride caliche cause chemicals cleaned coarse aggregate compaction concrete pavements concrete saw construction crete curing degrees F deicing drainage edges emulsion epoxy equipment excess Figure fog seals freezing gabions gradation grade gravel grout heat holes hot-mix inches inspection installed insure joints and cracks layer liquid asphalt load maintenance and repair maximum membrane method mixture moisture NAVFAC necessary normally oooo operations overlay patch pavement surface paving percent pile placed placement plant-mix plasticity index plows portland cement potholes prevent proper pumping removed replaced resurfacing riprap road roller sand seal coat sealant sealer select material shoulders slab slabjacking snow sodium chloride soil spalling spreader stability stockpile strength subbase subgrade surface treatments temperature thickness tion truck usually viscosity weather
Page 2-4 - Permanently frozen ground or permafrost is defined as a thickness of soil or other superficial deposit, or even of bedrock, at a variable depth beneath the surface of the earth in which a temperature below freezing has existed continuously for a long time (from two to tens of thousands of years).
Page 3-11 - Asphalt, a dark, brown to black cementitious material, solid or semisolid in consistency, in which the predominating constituents are bitumens that occur in nature as such, or are obtained as residua in refining petroleum.
Page 2-9 - After base course material has been spread, it shall be thoroughly blade-mixed to the full depth of the layer by alternately blading the entire layer to the center and back to the edges of the road. A blade grader weighing not less than 3 tons and having a blade at least 10 feet in length and a wheelbase of not less than 15 feet shall be used for the mixing, provided, however, that traveling mixers or traveling plants of a type approved by the engineer may be used in lieu of blade-mixing.
Page 10-8 - Nor should they be used at any intersection where there are Stop signs on one or more approaches, except, under special circumstances, to provide minor movement control within complex intersections.
Page 10-7 - Other intersections where a combination of high speed, restricted view, and serious accident record indicates a need for control by the STOP sign.
Page 10-10 - The insides of visors (hoods) and the entire surface of louvers, and fins, and the front surface of backplates shall have a dull black finish to minimize light reflection to the side of the signals. To obtain the best possible contrast with the visual background, it is desirable to paint signal head housings highway yellow.
Page 10-7 - ... 2. On the entrance ramp to an expressway where an acceleration lane is not provided. 3. Within an intersection with a divided highway, where a Stop sign is present at the entrance to the first roadway and further control is necessary at the entrance to the second roadway, and where the median width between the two roadways exceeds 30 feet.
Page 10-7 - STOP sign may be warranted at an intersection where one or more of the following conditions exist: 1. Intersection of a less important road with a main road where application of the normal right-of-way rule is unduly hazardous. 2.