STAIR MEASURING TUTORIAL:

TERMS/DEFINITIONS:

RISE: THE OVERALL HEIGHT OF THE STAIRS.

(FROM THE GROUND TO THE DOOR/DECK ETC)

RUN: THE OVERALL LENGTH OF THE STAIRS

(FROM THE STRUCTURE TO THE END OF THE STAIRS)

STAIR WIDTH: THE OVERALL WIDTH OF THE STAIRS.

PLATFORM WIDTH: THE OVERALL WIDTH OF THE PLATFORM.

(THIS COULD BE THE SAME AS THE STAIRS OR DIFFERENT DEPENDING ON THE SITUATION)

STAIR RISER : THE FRONT OF THE STAIR: SEE DIAGRAM

STAIR RISER HEIGHT: THE HEIGHT OF THE INDIVIDUAL STAIR

STAIR TREAD: THE TOP OF THE STAIR: SEE DIAGRAM

STAIR TREAD DEPTH: THE DEPTH OF THE INDIVIDUAL STAIR

MINIMUM AND MAXIMUM SIZES

STAIR RISER HEIGHT:

MINIMUM STAIR RISER HEIGHT-4” MAXIMUM STAIR RISER HEIGHT- 7 ¾”

AVALON STANDARD: 7.5 INCH

STAIR TREAD DEPTH:

MINIMUM STAIR TREAD DEPTH- 9 INCH – NO MAX

AVALON STANDARD: 12 INCH

PLATFORM DEPTH: (THE DEPTH OF THE TOP LANDING WHERE APPLICABLE: IF THE STAIRS TERMINATE ONTO A DECK THERE WILL BE NO PLATFORM)

MINIMUM PLATFORM SIZE: 36” X 36”

MEASURING:

1. RISE (FROM GROUND TO TOP OF PLATFORM/DECK)
2. RISER HEIGHT (MUST BE UNIFORM)  
3. DIVIDE TOTAL RISE BY RISER HEIGHT TO GET # OF STAIRS: RISE OF 15FT (15X12=180) (FT TO INCHES) (180/7.5 (RISER HEIGHT)=24 (NUMBER OF STAIRS)
4. # OF STAIRS X TREAD DEPTH =RUN (IF YOU HAVE A DESIRED TOTAL RUN ADJUST YOUR TREAD DEPTH TO MATCH YOUR TOTAL RUN)