Simple machines such as levers, inclined planes, wheels, axles, pulleys, screws, and wedges are the building blocks of more complex machinery.

Understanding the Basic Principles of Mechanical Machines

mechanical principles are important here is an example: The collapse of the Hyatt regency walkway (1981). two suspended walkways collapsed in the hotels atrium killing 114 people. this event was due to stress analysis, structural load distribution and failure to account for design changes. the combined mass of the people walking along the walkway caused the steel connections to fail.

Mechanical principles takes into consideration all the different energies and forces which a building may face, during or after completion of the build. Such as the forces acting down on the ground, which will determine the depth and strength required for it, or the material required for a certain aspect of the build, which would be considered due to the amount of stress it has to hold up, such as steel being used in a high rise building rather than wood, as it can take on a lot more weight.

Mechanical engineering - Wikipedia

Mechanical principles are important within the building process because if CAD drawings weren't understood or the architects on the project were unaware or unable to use Computer Aided Design, then the project would not be as accurate and also time consuming. CAD drawings have became very popular in design and are standard to todays date, they are split into 2d and 3d which is a process of Building Information Modelling (BIM), which is increasingly required by law in various locations. These different methods are used with auto CAD. However if an architect was unable to use CAD drawings, it would negatively impact the ongoing project. As an example of this, in the automotive industry, CAD software is essential for designing complex vehicle components. In the 1990's certain car manufacturers expirienced delays in bringing new models to market because they had to transition manual drawings to CAD this is because teams weren't fully trained or adapted to CAD so they struggled to meet deadlines.

Another example is in a historic building restoration, projects rely on 3D CAD modelling for accuracy but delays occurred when the primary architect was unfamiliar with CAD and couldn't transfer the original plans to modern technology so his lack of skills slowed the process down.

This shows the importance of mechanical principles, especially CAD drawings because without them, deadlines are not met or the task becomes near enough impossible to do if the skill set is not there or teams haven't been trained or had time to adapt to new technology.

Below the stand that collapsed was a void, seating more fans where many were injured, supporting the second floor/suspended floor on the stadium were supports, the overload of fans were located between supports as well as on, this was the stadiums weakest point and failed. Even though the concrete was steel enforced it was not designed to support the weight.

Case Study – in Ecuador, buildings are constructed with volcanic materials like pumice for insulation. Shear walls combined with flexible roof designs are capable of absorbing shocks and tremors. These techniques help structures withstand both seismic forces and volcanic eruptions.