1. Soil void ratio, e: ratio of volume of voids to the volume of solids
2. soil water content, w: ratio of the mass of water to the mass of solids
3. soil density, rho (p): ratio total mass over total volume
4. allowable stress =: material strength / safety factor allowable strength design
method
5. allowable stress: In allowable strength design method, actual calculated stres
cannot exceed....
6. Abutments: structural components that connect the bridge to the ground at the
ends of the bridge
7. Arch Bridge: type of bridge that relies on the strength and rigidity of the arch.
the strength of an arch is that the structural members are always in compressio
and that it can distribute the load throughout the arch to the abutments.
8. Beam Bridge: simplest type of bridge used to span the shortest distance
9. Bending: force that causes a structure to sag when placed in the middle of it
10. brace: structural member used to provide structural stability
11. Cantilevered bridge: type of beam bridge that can span greater distances tha
a simple beam bridge and often includes trusses in the framework 12. central
core: reinforced concrete shaft at the center of the building
13. column: vertical structural member that transmits the load from above to other
structural elements
14. compression: crushing force down the axis of a material that shortens the
material
15. dynamic load: sudden impact on the structure
, .
16. dynamics: study of forces that cause motion on physical objects
17. electronic distance meter (EDM): part of the total station, emitting infrared lig
18. Equilibrium: state at which structures can oppose external forces and can
transfer the load throughout the structure.
19. floor joist: beam that is designed to resist bending as people walk across a
floor 20. free body diagram: simple drawing that includes three components: the
structural members and joints, the supports, and the loads of forces that are applied
21. Geomatics Engineering: type of engineering usually associated with civil
engineering, involves determining the location of objects on the earth 22. joint:
Device that connects two or more structural members together
23. Land Surveying: process of taking and using measurements to determine
the exact size and shape of a piece of land 24. load: forces the structure must
withstand
25. mechanics: study of forces and motion on physical objects
26 Piers; Bridges: main vertical columns that transfer the load of the bridge into th
ground
27. shear: force that acts in opposite directions across a material
28. Static Load: weight of the structure itself (known as dead load) and weight
added to the structure under normal use (known as live load)
29. Statics: study that deals with the analysis of loads on objects at rest (or in
equilibrium)
30. Structural Frame: columns and beams used to build a structure, called a
skeleton
31. struts: braces that resist compression
32. suspension bridge: world's longest type of bridges, which utilize tension force
33. tension: pulling force that tends to stretch a material
34. ties: braces that resist tension
35. Torsion: turning force that is applied to a material or structure
36. total robotic station: tracks the survey rod and calculates the distance and
angle without the need of the surveyor standing at the station
37. total station: surveying instrument designed to measure both distance and
angles.
38. truss bridge: type of bridge that uses a truss, which allows for the load to be
spread out through all of the structural members in the truss.
39. soil porosity, n: ratio of volume of voids to total volume
40. dead load: inert, inactive load primarily due to the structures own weight