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.

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. 9 1 elevation service equipment installed outside your home can usually be elevated above the flood level. 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. 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.

Typical usage is no component of a hanging light fixture to extend below 7 0 a f f above finished floor. Reference plane as it s name implies is the top surface of the finished flooring material. 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. 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. 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. In an elevation view all vertical dimensions within a finished interior space would reference a f f. Equipment typically placed on the ground e g.