HOW TO PERFORM AN ACCESSIBILITY SURVEY Planning for the Survey: If possible, we suggest that a team of two or more individuals out the survey. It is very helpful if one person directs the process, takes pictures and notes while the other person performs the measurements. It is also suggested that people with disabilities be in- volved in the survey. Using a Floor Plan: It is often helpful to have a floor plan, or a sketch of a floor plan, for note taking while conducting the survey. Specific elements in this check- list can be can be identified on the floor plan. Tools Clipboard to make recording on the checklist easier.  Flexible tape measure.  Carpenter’s level (either electronic or manual) for meas-  uring slopes on ramps, walkways and parking spaces. Digital fish scale or door pressure gauge for measuring  door opening forces. Digital camera for photo documentation of barriers and  accessible features. edge of the and the ramp Conducting the Survey: surface. See the figure. In this case Measuring clear width (unobstructed opening) - To the slope is 3 inches rise over 36 measure the clear width (unobstructed open space) at a inches horizontal distance or the door, measure the distance between the face of the ratio of 1:12. door and the door stop, with door open at 90 degrees. Clear width measurements at other locations (ramps, Measuring door opening force - If accessible routes, etc.) are measured in the same man- using a fish scale or similar device, ner; measure the width of the unobstructed space avail- tie one end of the scale to the door able for passage. handle and observe the maximum force displayed on the scale as you Measuring slope - Slope is calculated by computing the pull the door open from a closed ratio of vertical rise to horizontal run. For example, if a posi- tioned. ramp 6 inches in vertical height traverses a horizontal distance of 6 feet (72 inches) then the slope is 6 / 72 = 1 / 12 = 0.083 (8.3%). Typically the maximum CLEAR WIDTH allowable for a ramp is written as 1:12. (UNOBSTRUCTED OPENING) To measure the slope, lay one end of a carpenter’s level 32 INCHES DOOR STOP MINIMUM on the uphill side of the ramp, lift the downhill end of the WALL WALL DOOR FACE tool to bring it to level (bubble in the middle), and measure the distance between the downhill bottom
HOW TO PERFORM AN ACCESSIBILITY SURVEY Planning for the Survey: If possible, we suggest that a team of two or more individuals out the survey. It is very helpful if one person directs the process, takes pictures and notes while the other person performs the measurements. It is also suggested that people with disabilities be in- volved in the survey. Using a Floor Plan: It is often helpful to have a floor plan, or a sketch of a floor plan, for note taking while conducting the survey. Specific elements in this check- list can be can be identified on the floor plan. Tools  Clipboard to make recording on the checklist easier.  Flexible tape measure.  Carpenter’s level (either electronic or manual) for meas- uring slopes on ramps, walkways and parking spaces.  Digital fish scale or door pressure gauge for measuring door opening forces.  Digital camera for photo documentation of barriers and accessible features. Conducting the Survey: Measuring clear width (unobstructed opening) - To measure the clear width (unobstructed open space) at a door, measure the distance between the face of the door and the door stop, with door open at 90 degrees. Clear width measurements at other locations (ramps, accessible routes, etc.) are measured in the same man- ner; measure the width of the unobstructed space avail- able for passage. Measuring slope - Slope is calculated by computing the ratio of vertical rise to horizontal run. For example, if a ramp 6 inches in vertical height traverses a horizontal distance of 6 feet (72 inches) then the slope is 6 / 72 = 1 / 12 = 0.083 (8.3%). Typically the maximum allowable for a ramp is written as 1:12. To measure the slope, lay one end of a carpenter’s level on the uphill side of the ramp, lift the downhill end of the tool to bring it to level (bubble in the middle), and measure the distance between the downhill bottom edge of the and the ramp surface. See the figure. In this case the slope is 3 inches rise over 36 inches horizontal distance or the ratio of 1:12. Measuring door opening force - If using a fish scale or similar device, tie one end of the scale to the door handle and observe the maximum force displayed on the scale as you pull the door open from a closed posi- tioned. CLEAR WIDTH (UNOBSTRUCTED OPENING) 32 INCHES DOOR STOP MINIMUM WALL WALL DOOR FACE
2010%20ADA%20Standards%20Checklist_March%202015%20Edition(1).docx