|
|
CABLE-STAY BRIDGE |
ARCH BRIDGE |
TRUSS BRIDGE |
|
PULLEY BELT |
COULD WORK, NOT CHANGING THE STRUCTURE OF
THE BRIDGE. ALL THE STRUCTURE NEEDS TO BE KEPT FOR SUPPORT. PLACED THE ENDS. |
ITS VERY
POSSIBLE FROM THE TOP HAVE THE BRIDGE OR A SECTION
COME DOWN. |
SIMILAR TO
THAT OF THE ARDH BRIDGE. |
|
RETRACTABLE WHEEL |
COULD WORK FROM THE OPPOSITE END OF THE
BRIDGE WHERE THE CABLES LIE. THE MOVEMENT WILL GO ALONG THE ARCH OF THE OTHER
STRUCTURE. |
THE WIDTH
OF THE SECTION HAS TO BE SIMILAR TO THE WITH OF THE BRIDGE SO THAT IT CAN
SLIDE ALONGS THE STRUCTRUE ITSELF. |
NOT VERY
POSSIBLE. |
|
COUNTER WEIGHT |
VERY
POSSIBLE TO HELP WITH THE PULLEY. HELP MOVE AN OBJECT AND MUST BE AWAY FROM
THE ACTUAL SUPPORT. CAN LOOSE THE STRUCTURE OF BRIDGE. |
COULD WORK
NEED A THING CONNECTING TO THE OPPOSITE END SO THE WEIGHT ARE
COUNTER BALANCE. |
SIMILAR TO
THAT OF THE ARCH BRIDGE. |