Scaffoldings left standing __________ months shall not be used until damaged members are replaced and the whole structure returned to its original strength., 2, 3, 4, 5, Every scaffold shall be capable of supporting __________ the maximum load to which it may be subjected without exceeding the allowable unit stresses of the material used., twice, thrice, half, five times, All demolition operations of building or other structure over __________ high shall be under supervision of a competent person., 3 meters, 4 meters, 5 meters, 6 meters, A user's quality of service through or over a specific facility (e.g. over a highway, through an intersection, across a crosswalk) is classified by a ____________., Volume-capacity ratio, Level of service, Free-flow, Capacity, __________ is the maximum sustained speed that heavy vehicles can maintain on a given extended upgrade., Spot speed, Operating speed, Crawl speed, Legal speed, __________ is the highest overall speed at which a driver can safely travel on a given highway under favorable weather conditions and prevailing traffic conditions., Spot speed, Operating speed, Crawl speed, Legal speed, __________ is the crossing of at least two traffic streams traveling in the same general direction along a length of highway without traffic control., Junction, Weaving, Intersection, Cloverleaf, AASHTO combines pavement layer properties and thicknesses into one variable called the ___________., Structural number, Pavement number, Load number, Stability number, __________ is a method of increasing skid resistance and reducing hydroplaning on all types of pavements., Brushing, Grooving, Lining, Roughing, __________ is a method of surveying in which the positions of survey points are determined by measuring the angles of triangles defined by the points., Trilateration, Traversing, Leveling, Triangulation, __________ refers to the ability to resist permanent deformation, usually at high temperatures over a long time period., Stability, Durability, Flexibility, Resistance, A mixture's __________ refers to its ability to conform to the gradual movement due to temperature changes or settlement of the underlying pavement layers., Stability, Durability, Flexibility, Resistance

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