Shell structure

Structure with a solid outer surface (which may be rounded or flat shape) and a hollow inner area 1.Egg

Solid Structure

structure made of solid piece (or solid combination of pieces) of strong material

1.Hockey puck

Frame

Structure consisting of a rigid arrangement of parts joined together

1.Wheel chair 2. Snow shoe

Beam bridge

simple beam bridge flat and is supported at its two ends

Truss bridge

Frame work of beams joined together

Suspension Bridge hangs between two

ends .main cables are anchored in concrete

Arch Bridge

Bridge supported by an arch or a series of arches

Suspension Bridge

the purpose of a suspension bridge is because it is a really strong bridge and it can handle heavy loads

Truss bridge

Purpose of a truss bridge is light weight but strong bridge

Arch Bridge The purpose of this bridge is it can with stand heavy loads