What is the main reason for supporting pipes at specified intervals?

Supporting pipes at specified intervals is crucial primarily to prevent sagging and damage. Pipes, especially when carrying liquids or gases, experience various stresses and loads. If pipes are not adequately supported, gravity can cause them to sag, which may lead to misalignment, increased pressure on joints, or even breakage over time. Adequate support ensures that the pipes are held firmly in place, minimizing the risk of damage due to bending or sagging, and maintaining their overall functionality and integrity.

While maintaining alignment, saving on material costs, and simplifying installation are all relevant factors in pipe installation, they are secondary to the primary concern of preventing sagging and potential damage. Proper support directly addresses the physical properties of the materials involved, helping to ensure a long-lasting and reliable plumbing system.