Transit Terminology

6. the part of the structure which is placed in or on the ground, upon which the main structure rests
9. A point on a baseline that is a specified distance from the point of commencement
11. the angle to a line of sight, measured clockwise from a north(usually) meridian
13. the degree of refinement with which a measurement is made
14. a structure designed to provide an opening under a road, etc., usually for the transportation of storm water
15. the inside bottom of a pipe or culvert
17. a line on a map joining points of similar elevation
18. the distance measured North and East of a reference point having zero coordinates
21. preliminary and layout surveys used for construction
23. the horizontal bisector of a pipe
24. 10,000 square meters
25. material used to fill an excavation
26. a permanent reference point for horizontal and vertical positioning

1. the portion of a structure resting upon footings and proving support for walls and other structural components
2. a structure which provides access to underground services
3. in construction, the excavation of material; also the measurement down from the grade mark
4. a fixed, solid reference point with a precisely determined, published elevation
5. the vertical distance above or below a given datum
7. the slope of a grade line
8. a straight line often referred to with respect to a curve
10. is a wall built to hold back an embankment
12. the conformity of a measurement to the "true" value
14. this basin is a structure designed to collect surface water and transfer it to a storm sewer
16. acronym for right of way
19. the collection and transportation of ground water and storm water
20. direction of a line given by the acute angle from the meridian and accompanied by a cardinal compass direction
22. the removal of topsoil from a construction site