What is a structural element that supports floor framing members called?

A structural element that supports floor framing members is known as a beam. Beams are horizontal members that carry loads from the floor framing (like joists) and transfer those loads to vertical supports, such as posts or walls. Beams are essential in ensuring the integrity and stability of a structure, providing the necessary strength to withstand varying loads, including live loads (weight of occupants and furniture) and dead loads (weight of the building materials).

In the context of floor framing, beams are typically placed perpendicular to joists, and they may span across rooms or spaces, allowing for open layouts without compromising structural integrity. Their design and placement are critical in architectural and engineering practices.

Joists are smaller components that run between beams to support the floor surface. While trusses are often used in roofs and can support vertical loads, they typically consist of a framework made up of various members and aren't specifically designated as support for floor framing. Posts are vertical supports that can hold up beams but are not themselves considered to be part of the horizontal framing structure.