3619 COLBY AVE 2019-01-28 - Laserfiche WebLink

Chapter 4.Accessible Routes ICC A117.1-2009 404.3.2 Maneuvering Clearances. Maneuvering 405.5 Clear Width. The clear width of a ramp run shall clearances at power-assisted doors shall comply with be 36 inches (915 mm) minimum. Handrails and hand- Section 404.2.3. rail supports that are provided on the ramp run shall not 404.3.3 Thresholds. Thresholds and changes in project into the required clear width of the ramp run. level at doorways shall comply with Section 404.2.4. 405.6 Rise. The rise for any ramp run shall be 30 404.3.4 Two Doors in Series. Doors in series shall inches (760 mm) maximum. comply with Section 404.2.5. 405.7 Landings. Ramps shall have landings at the bot- 404.3.5 Control Switches. Manually operated con- tom and top of each ramp run. Landings shall comply trol switches shall comply with Section 309.The clear with Section 405.7. floor space adjacent to the control switch shall be 405.7.1 Slope. Landings shall have a slope not located beyond the arc of the door swing. steeper than 1:48 and shall comply with Section 302. 405.7.2 Width. Clear width of landings shall be at 405 Ramps least as wide as the widest ramp run leading to the 405.1 General. Ramps along accessible routes shall landing. comply with Section 405. 405.7.3 Length. Landings shall have a clear length EXCEPTION: In assembly areas, aisle ramps adja- of 60 inches (1525 mm) minimum. cent to seating and not serving elements required to 405.7.4 Change in Direction. Ramps that change be on an accessible route shall not be required to direction at ramp landings shall be sized to provide a comply with Section 405. turning space complying with Section 304.3. 405.2 Slope. Ramp runs shall have a running slope greater than 1:20 and not steeper than 1:12. 405.7.5 Doorways.Where doorways are adjacent to a ramp landing, maneuvering clearances required by EXCEPTION: In existing buildings or facilities, ramps Sections 404.2.3 and 404.3.2 shall be permitted to shall be permitted to have slopes steeper than 1:12 overlap the landing area. Where a door that is sub- complying with Table 405.2 where such slopes are ject to locking is located adjacent to a ramp landing, necessary due to space limitations. the landing shall be sized to provide a turning space 405.3 Cross Slope. Cross slope of ramp runs shall not complying with Section 304.3. be steeper than 1:48. 405.8 Handrails. Ramp runs with a rise greater than 6 405.4 Floor Surfaces. Floor surfaces of ramp runs inches (150 mm) shall have handrails complying with shall comply with Section 302. Section 505. TABLE 405.2—ALLOWABLE RAMP DIMENSIONS FOR CONSTRUCTION IN EXISTING SITES,BUILDINGS AND FACILITIES Slope.' Maximum Rise Steeper than 1:10 but not steeper than 1:8 3 inches(75 mm) Steeper than 1:12 but not steeper than 1:10 6 inches(150 mm) i g 1A slope steeper than 1:8 shall not be permitted. 60 min 60 min 60 min 1525 1 1525 f / 1525 landing ramp run landing ramp run c �- 1L/ landing •8 to at least as wide as ramp run (a) ramp > run V (b) FIG.405.7 _ RAMP LANDINGS ''' ')/111 `` f' 412" i 1