what is similar about a dead load and a live load and what is different? please help
live load moves, like a cow in a trailer.
dead load does not move, like a dead cow tied down in a trailer.
thank you
A dead load and a live load are two primary types of loads that are considered when designing structures such as buildings, bridges, and structures.
Similarities:
1. Both are types of loads: Both dead load and live load are forces acting on a structure.
2. Both contribute to the overall load: Both dead load and live load add to the total load that a structure must withstand.
3. Both are considered during design: Engineers and architects take into account both dead load and live load when designing structures to ensure they can support the anticipated weights.
Differences:
1. Definition: Dead load refers to the permanent or stationary weight of the structure itself, including materials like the building's foundation, walls, roof, and permanently attached fixtures. Live load, on the other hand, refers to the temporary or variable weight imposed on a structure, such as the weight of people, furniture, or movable equipment.
2. Magnitude: Dead load is typically greater than live load since it represents the total weight of the structure and its permanent components. Live load varies depending on the intended use of the structure and can change over time.
3. Distribution: Dead load is distributed uniformly over the entire structure since it encompasses the weight of the permanent elements. Live load, however, is usually distributed non-uniformly since it accounts for the dynamic and unpredictable nature of temporary loads.
4. Stability: Dead load has a stabilizing effect on the structure since it provides a counterforce against external forces like wind or earthquakes. Live load, on the other hand, can create dynamic forces that may impact the stability of the structure, especially when it moves or changes location within the space.
To find more specific information about dead loads and live loads, you can consult engineering codes and standards, such as the International Building Code (IBC) or Eurocode, which provide detailed guidelines for estimating and considering these loads during the design process. Additionally, structural engineers use mathematical formulas and calculations to determine dead load and live load values specific to the structure they are working on.