Ordinarily, contractors or subcontractors are the ones who submit RFIs.

They give them to the architects, engineers or project managers.

Practically, the aim is to get targeted responses at a fast pace.

Reduces the chances for delays and work needing to be repeated.

All the people involved benefit when answers are clear and written down.

If you are intersted to read about the "what is sub constractor" visit our offical site.