A good example are the hotels or condominium. Unless, design requires an area to have a lower FFL than the rest such as the shower area, utility rooom, etc. For me, all floor finishes must be at the same level to eliminate awkward transition strips or ramps between 2 different materials. If all minimum clear heights are reference from SFL or SSL, how would you comply to the minimum requirements when there's about a 25mm difference between the SSL and the FFL? How are your door panels going to look? Are the door panels going to have various heights due to different floor finish thicknesses while maintaining the industry standard gap requirement for doors? A ceiling height of 8' is not a true 8' at a granite floor finished area compared to the ceiling height at the exposed cement finish area.ģ. An example for this one are the handrails, guard rails, door heights, finished ceilung height and headroom clearances. All of the code requirements regarding minimum and maximum heights and clearnces are based on the finishes and not from the SSL ( Top of Slab) or SFL (Top of floor screeding or concerete topping). Also, someone told me, Architects lead the consultant team, therefore, its always the Architect (responsible for the finishes) will dectate the reference based on the top of the any finishes.Ģ. How the whole structure interior and exterior would look and function. This process may be different with wood constructon but, most of the time, it can be applied as well.įrom my understanding, why FFL is always the point of reference in a storey is due to the following design reasons:ġ. This has been my practice and have seen some architects, GC, CM and PM do the same.
I do not even bother thinking about the SFL. In past, I've always used FFL (top of the floor finish) as my point of reference to determine the SSL or the underside of joists. Be it in Revit or CAD or manual drafting. As the Design Architect or technician, we should be able to communicate or translate the design to working drawings where it would show the clear intent of the design to the persons who are building it. My role in the team was to help out with the production of drawings.Īnyways, this is why I posted this item here to see what is the industry standards here in Canada or US. I wanted to find out how he wanted to show the Architect's intent in the drawings so everyone are on the same page. This conversation came about when I had a kick off meeting with our team lead.
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