"what is design Data in engineering"

It could be many things: tensile strenght of a particular material, compressive strenth, melting point. Or it could be the desired roof loading in lbs/ft^2
Many things are design data.

In engineering, design data refers to the specific information and criteria used in the design process of a product, system, or structure. It provides essential details about the desired specifications, parameters, and performance requirements that engineers consider when designing something.

To determine the design data, engineers typically follow a systematic approach, which includes the following steps:

1. Identify the project requirements: Engineers first understand the purpose and requirements of the project. This involves considering factors such as functionality, intended use, performance characteristics, safety standards, and regulatory requirements.

2. Conduct research and analysis: Engineers carry out research to gather relevant data and information related to the project. This may involve studying materials, components, systems, standards, codes, and industry best practices.

3. Identify design constraints: Engineers need to consider any limitations or constraints that could impact the design. These constraints can include budgetary limitations, physical space restrictions, environmental factors, and manufacturing limitations.

4. Use design codes and standards: Engineers refer to industry-specific codes, standards, and guidelines that outline the requirements and specifications for various aspects of the design. These codes ensure that the design meets safety regulations and industry norms.

5. Perform calculations and simulations: Engineers use mathematical calculations, simulations, and computer-aided design (CAD) software to analyze and predict how the design will perform under different conditions. This helps determine the necessary design data, such as load capacities, stress limits, deflections, etc.

6. Factor in safety margins: Engineers often apply a safety factor or margin to account for uncertainties and ensure the design can withstand unexpected variations, shocks, or stress. This ensures a reliable and robust design.

Overall, design data in engineering refers to the specific information, criteria, and parameters that engineers consider when designing a product, system, or structure. It is crucial for ensuring that the final design meets the desired requirements, standards, and performance characteristics.