PLTW CEA 3.4 Exam 2024 Questions & Answers 100% Accurate!

Angle of Response - ANSWERThe maximum angle of a stable slope of a granular material determined by friction, cohesion, and the shapes of the soil particles. Backsight - ANSWERThe reading on a rod held at a point of known or assumed elevation. Bench Mark (BM) - ANSWERA relatively permanent object, natural or artificial, bearing a marked point whose elevation above or below the adopted datum is known or assumed. Closure Error - ANSWERThe difference between a measured or calculated elevation and the true or established elevation. Coarse Grained Soil - ANSWERSoil in which 50 percent or more, by weight, of the soil is retained on the Number 200 sieve. In other words, 50 percent or more of the sample is composed of sand and/or gravel. Construction Survey - ANSWERA land survey that provides points and elevations for building civil engineering projects. Often called engineering survey. Control Survey - ANSWERSurvey that establishes a network of horizontal and vertical monuments that serve as a reference framework for other surveys. Datum - ANSWERAny surface to which elevations are referred (for example, mean sea level). Design Storm - ANSWERA selected storm event, described in terms of the probability of occurring once within a given number of years, for which drainage or flood control improvements are designed and built. Detention Pond (Dry Pond) - ANSWERA pond that collects storm water, temporarily stores, and then slowly releases the water into the municipal storm water system. Differential Leveling - ANSWERThe process of determining the difference in height b