When might you find "M" drawings instead of "P" and "H" drawings?

"M" drawings typically refer to Mechanical drawings, whereas "P" and "H" drawings generally represent Plumbing and HVAC (Heating, Ventilation, and Air Conditioning) drawings, respectively. The context of "M" drawings being simpler than "P" and "H" drawings can be understood in various ways.

Mechanical drawings often focus on the basic mechanical components and systems required for a project, which may not require the same level of intricate detail that plumbing or HVAC designs might involve. For instance, plumbing systems often need to illustrate specific connections, pipe fittings, and flow directions with precision, while HVAC drawings include detailed duct layouts, equipment specifications, and thermal calculations.

Simpler designs in mechanical drawings might emphasize broader system layouts that convey functionality without delving deeply into complex installation specifics, which are crucial in plumbing and HVAC designs. Therefore, scenarios where "M" drawings are utilized can be instances where streamlined information is sufficient for conveying the necessary mechanical concepts without overwhelming detail.

This reasoning clarifies why choosing "when they are simpler" aligns correctly, as it highlights the comparative nature of these drawing types based on their level of detail rather than their applicability or context in terms of time or cost.