Equipment To Be Installed Above Finish Floor Elevation

Definition of aff above finish floor in construction abbreviation used on construction plans and contract documents to indicate an elevation above the finished floor.

Equipment to be installed above finish floor elevation. Equipment typically placed on the ground e g. Typical usage is no component of a hanging light fixture to extend below 7 0 a f f above finished floor. 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. The finish floor is then considered ff 0 0.

In an elevation view all vertical dimensions within a finished interior space would reference a f f. The electrical equipment itself may have a height that is less than 6 1 2 feet but if it is mounted so the top of the equipment is higher than 6 1 2 feet the minimum working space height shall be the equipment height. Equipment mounted on an exte rior wall e g an electric meter incoming electric telephone and cable television lines usually can be mounted higher up on the same wall. Once the finish floor elevation is established the other project elevations are based off the finish floor.

9 1 elevation service equipment installed outside your home can usually be elevated above the flood level. Reference plane as it s name implies is the top surface of the finished flooring material. With the letter a has an attached garage floor elevation at or above the base flood elevation bfe the garage floor may be excluded for rating. That wall would be 16 feet 6 inches above the finish floor.