Truss Bridge Vocabulary

foundation

distributes the weight of the structure to the soil or rock below it

truss

structure composed of members connected together to form a rigid framework

members

load carrying components of a structure

structural engineers

civil engineers with special expertise in structural analysis and design

elevation view

shows the structure (bridge in this case) from the side

isometric view

three dimensional representation of the structure

deck

flat surface between two main trusses

piers

One type of bridge foundation, supports the bridge in the middle of the gap

geotechnical engineers

civil engineers with special expertise in soils and foundation

force

a push or pull applied to an object, al forces have magnitude (amount) and direction

vector

a way to represent force, (arrow) shows both magnitude and direction

load

a force applied to a structure

equilibrium

a structure that is not moving, an upward force equals the downward force

supports

points where the structure is physically in contact with its surroundings

strength

the largest internal force a structural component experiences before failing

faliure

when the internal force in a structural component becomes larger than its strength

design specifications

the functional requirements, asthetic requirements and any constraints that will affect the design or construction

tension

a member that is being stretched, an internal force that makes a member longer

compression

a member that is being squashed, an internal force makes a member shorter

gusset plate connection

a method of joining members together using plates, rivets, bolts or welds

plans

drawings

drawings

highly detailed written descriptions of every aspect of a project

quality control

the process of routinely inspecting and testing materials and workmanship on a project

Design Process (Cycle)

a series of steps that engineering teams use to guide them as they solve problems.

Design Brief

Part 1: Explain the problem. Part 2: Explain how you intend to solve it.

Iteration

Make changes and adjustments to improve the outcome. The act of repeating a process with the aim of approaching a desired goal, target or result