Finished Ground Floor Level

Thinkstock images comstock getty images in the course of planning a flooring project you may hear the salesmen or the flooring specialists talk about the finished floor level and the structural floor level.

Finished ground floor level. No use having finished ground level 150mm from ffl and then paving up to the same level. In many cases the elevation of the finish floor is a benchmark elevation with other dimensions noted as aff or above this finish floor height. It is a requirement that the dpc is at least 150mm above ground level. Finished floor level or ffl is the height of the floor and flooring materials.

So in concrete construction it may be the uppermost surface of a screeded finish or in timber construction ffl will denote the top level of floorboards chipboard or ply decking. Abbreviation used on construction plans and contract documents to indicate an elevation above the finished floor. Crawlspace 450 mm bottom of cladding to paving except masonry veneer 100 mm bottom of cladding to unpaved ground except masonry veneer 175 mm. The floor can be wherever you want it obviously even well below ground level in the case of basements so long as it is.

The level shouldn t be off by more than 3 16 inch 0 48 cm any minor deviations you happen to discover shouldn t impact the stability of the finished floor. This height will be shown on the section. The minimum recommended distance from the top of the slab to the finished ground level fgl is 150 mm. Finished ground level is top of pavers or whatever is outside the door.

150 is an average. Storm water run right in door. If the floor is more than 3 16 inch 0 48 cm off level at any point further compounding or sanding may be necessary. Top of foundation wall above finished ground level 225 mm suspended timber floor construction bottom of cladding 200 mm suspended timber floor construction underside of joists i e.

Raising the slab level above the ground level ensures floodwater or stormwater cannot readily flow into the house and cause water damage. Check out this website the best resource on the planet for all things paving. And as muffler said only the dpc needs to be 150 above gl. The difference in height between ground level and finished floor varies.

This is to ensure that the finished floor level finishes above the surrounding ground level.