SFL stands for Structural Floor Level, while FFL stands for Finish Floor Level; both are terms commonly used in construction drawings to denote different floor levels.
Here's a breakdown of each:
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SFL - Structural Floor Level: This refers to the level of the structural slab. It is the level of the concrete or other structural material before any finishes are applied. The structural floor level is critical for ensuring the building's structural integrity and load-bearing capacity.
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FFL - Finish Floor Level: This indicates the final, finished level of the floor, after all flooring materials (tiles, wood, carpet, etc.) have been installed. The finish floor level is what you actually walk on and includes the thickness of all flooring materials on top of the structural slab.
In essence:
The FFL is always at or above the SFL. The difference between the SFL and FFL represents the thickness of the flooring materials and any underlayment. Understanding these levels is crucial for accurate construction and ensuring that the final floor height is correct for proper drainage, door clearances, and integration with other building systems.
