Equipment To Be Installed Above Finish Floor Elevation

The finish floor is then considered ff 0 0.

Equipment to be installed above finish floor elevation.

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. Equipment typically placed on the ground e g. 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. 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.

That wall would be 16 feet 6 inches above the finish floor. The work space shall be clear and extend from the grade floor or platform to a height of 6 1 2 feet or the height of the equipment whichever is greater. Once the finish floor elevation is established the other project elevations are based off the finish floor. In an elevation view all vertical dimensions within a finished interior space would reference a f f.

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. For example you may have masonry walls on the sides of the building showing top of wall at 16 feet 6 inches on the drawings. 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.