tension pulls on the bridge, compression acts upon the supports of the bridge, and shear is created because of the wind blowing on the wind. extreme weather or earthquakes may cause torsion, but it's very rare that you'll find that in a bridge.
can some one write the reason for why external or internal?
by contracting and expanding
The external forces were rough sex
The main forces applied to welded structural pipe are axial forces (tension and compression), bending forces, and torsional forces. These forces can come from external loads, such as weight or pressure, as well as internal forces due to temperature changes or fluid flow. Proper welding and design are essential to ensure the pipe can withstand these forces without failing.
Fasteners are often exposed to tensile forces, which are forces that stretch or pull the fastener in opposite directions. These forces are generated when the components being fastened experience external loads or vibrations. It is important for fasteners to be able to withstand these forces to maintain the integrity and stability of the joint.
Resonance is the property of waves that can cause bridges to buckle. If the frequency of the external forces matches the natural frequency of the bridge, resonance can occur, leading to large amplitude vibrations that can weaken and ultimately damage the structure.
External forces may refer to places.
Some common external forces that must be planned for when constructing a stable structure include wind, snow loads, seismic activity, and soil settlement. Understanding and accounting for these forces during the design and construction process helps ensure that the structure is able to withstand them and remain stable over time.
Two major forces that bridges deal with are compression and tension. Compression forces act to push or squeeze the material together, while tension forces act to pull the material apart. Bridges are designed to distribute these forces to ensure the structure can support the weight it carries.
Suspension bridges are one of the oldest engineering forms, dating back to the 4th century. Modern suspension bridges were made possible by the web truss, invented by John Augustus Roebling. The web truss made a very sturdy, rigid structure that could withstand storms, wind forces, and heavy loads.
Understanding how forces act on structures is important because it helps ensure the safety and stability of buildings and bridges. By knowing how forces such as gravity, wind, and seismic activity affect structures, engineers can design them to withstand these forces and prevent collapses or failures. This knowledge also allows for efficient and cost-effective construction practices.
Tinsile strength