Equipment To Be Installed Above Finish Floor Elevation

In an elevation view all vertical dimensions within a finished interior space would reference a f f.

Equipment to be installed above finish floor elevation.

Typical usage is no component of a hanging light fixture to extend below 7 0 a f f above finished floor. 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. The finish floor is then considered ff 0 0. Reference plane as it s name implies is the top surface of the finished flooring material.

Once the finish floor elevation is established the other project elevations are based off the finish floor. That wall would be 16 feet 6 inches above the finish floor. An attached garage floor elevation below the bfe can be excluded as the lowest floor for rating if the garage has no machinery or equipment below the bfe. 9 1 elevation service equipment installed outside your home can usually be elevated above the flood 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. 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 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. Equipment typically placed on the ground e g.