Due to repeated stress and strain, the material used in the bridges loses elastic strength and ultimately may be collapsed. Hence, bridges are declared unsafe after long use
Because of cracks and corrosion. Actually, poor maintenance is the cause of ALL modern bridge failures and closures.
Distilled water does not expire or become unsafe to use as long as it is stored properly in a clean, sealed container.
Bridge demolition would be used to demolish a bridge due to it being unsafe or if it were to be replaced with a better built bridge. Often bridges become unsafe in which case it would have to be demolished and rebuilt.
DO NOT DO THIS!!! UNSAFE!!!!!!!!!! UNSAFE!!!!!!!!!!!! UNSAFE!!!!!!!!!!!!!!
Rainwater can be stored for about 1-2 weeks before it becomes unsafe for use due to the growth of bacteria and other contaminants.
They are suspension bridges. One of the well known examples is the Golden Gate Bridge in San Francisco.
because to give long span we use arch
Doing dangerous things will make you unsafe. Inspectors found unsafe conditions in the company's factory.
It is recommended not to use elevators after an earthquake as they may be compromised and unsafe. It is safer to use stairs as a precaution until the building is assessed for structural damage and declared safe to use elevators again.
Rainwater can be stored safely for up to one year if it is properly collected and stored in a clean container. After one year, it may become unsafe to use due to the growth of bacteria and other contaminants.
I use Plastruct for modelling bridges.
yes, most electric violins use normal bridges.