Fs Stairways
Socorro Henson
(B) Where two or more stairways are provided and work is being performed in the stairways, at least one stairway shall be maintained clear for access between levels at all times. Note:For stairway access at demolition projects, refer to Article 31 of these safety orders. Exceptionfor subsection (a)(4): 1. At those locations where unusual site conditions prevail, an alternate effective means of access acceptable to the Division may be afforded.
(7) Sufficient illumination on all stairways, providing at least five (5) foot-candles of light on the steps, shall be maintained. All lamps providing stairway illumination shall be substantially guarded either physically or by location.
(3) Reinforced Concrete or Composite Steel -Concrete Buildings. Stairways shall extend to the lowermost floor upon which a complete vertical shoring system is in place. A minimum of two ladders at different locations for each floor may be used above this floor but not to exceed three floors.
(4) Roof and attic work areas of all buildings shall be provided with a safe means of access and egress, such as stairways, ramps or ladders that conform to the provisions of Article 25 of these safety orders.
(2) Where ladders are allowed as primary access or exit as in (b) above from a working area for 25 or more employees, or simultaneous two-way traffic is expected, double cleat ladders shall be installed. Double cleat ladders shall not exceed 24 feet in length.
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In alterations, stairs between levels that are connected by anaccessible route (e.g., ramp or elevator) are not required to meet theStandards, but handrails must comply when stairs that are part of ameans of egress are altered (210.1, Ex. 2).
Recommendation: Providing visual contrast (light-on-dark or dark-on-light) on the top and bottom steps that is approximately 2 inches wide and located either on nosings or at the leading edges of treads is helpful for people with low vision.
Recommendation: In facilities that primarily serve children, a second set of stairway handrails 28 inches high maximum above stair nosings is advisable. A vertical clearance 9 inches minimum between upper and lower handrails will help prevent entrapment.
The ADA Standards address escalators in rail and fixedguideway stations (810.9) but not those provided in other types offacilities. Escalators must have a clear width of at least 32 inches and meetspecific provisions in the ASME A17.1 Safety Code for Elevators andEscalators. The referenced ASME criteria require steps to be demarcatedby yellow lines 2 inches wide maximum along the back and sides (6.1.3.5.6)and specify at least 2, but no more than 4, flat steps at escalatorentrances and exits (6.1.3.6.5).
The Standards apply to both exterior and interior stairs that are partof a required means of egress. This includes exterior stairs that arepart of exit discharge (i.e., the path from an exit to a public way suchas a street or alley).
Yes, stairs that are part of a means of egress must comply in mobilityaccessible residential dwelling units covered by the Standards. Egressstairs of residential facilities that are located outside individualdwelling units also must comply.
Stair treads must meet requirements for floor or ground surfaces whichspecify that surface openings not allow passage of a sphere more than inch in diameter (302.3). Risers cannot be open, but perforations oropenings in riser surfaces that prohibit passage of a sphere not morethan inch in diameter are acceptable.
Handrail extensions must be in the same direction as the stair flight,but continuous handrails can wrap at the inside turn of switchback ordogleg stairways. In alterations where the required extension wouldproject into circulation paths and pose a hazard, they can turn, wrap,or be shortened as necessary.
No, handrail gripping surfaces at egress stairs subject to the Standardsmust be unobstructed on the top and sides and free of sharp or abrasiveelements so that users can maintain a continuous grip along the fulllength (505.6 and 505.8).
Choice Floors & Stairways has been providing flooring, stairways, and railings to Washington, DC, Maryland, and Virginia communities for over 45 years. We specialize in retail, new and existing construction, and commercial sectors. Let us help you with your floor or stair project!
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To keep our stairways safe and accessible, SDOT inspects the condition of each public stairway across the city and identifies repairs. Repairs range from replacing the handrails to replacing the stairway altogether.
SDOT's Stairway Maintenance Program is funded through SDOT's Operations and Maintenance budget and the Levy to Move Seattle. Approved by voters in 2015, the 9-year, $930 million Levy to Move Seattle provides funding to improve safety for all travelers, maintain our streets and bridges, and invest in reliable, affordable travel options for a growing city.
The Seattle Department of Transportation (SDOT) is on a mission to deliver a transportation system that provides safe and affordable access to places and opportunities for everyone as we work to achieve our vision of Seattle as a thriving, equitable community powered by dependable transportation.
I have created an Indoor Viewer Application using a indoor web map and have also used a self created routing and closest facility service. When i am trying to create a route between two locations on two different floors it is always creating a route using the elevator for floor transition. In the floor transition I have also added elevator delay for 30 seconds still there is no difference.
Assuming you've created the correct transition features, you can also try 'forcing' the default walking mode to prohibit using the elevator (transition) feature from the network dataset by placing the check mark next to it.
I suspect the issue may be with the stairway transitions connecting to the pathway transitions. If you add your pathways and transitions layer to a scene in ArcGIS Pro and take a look at the endpoints of the stairways, are they snapped to the pathways on the levels at each endpoint?
This is a perfect distance for a day walk for me with a lunch break; enough distance to get a good workout, but not so long that I would be too sore to fly back to LAX the next morning. I had at first thought that I might be able to be lazy, and simply combine the three, 4 mile or so, red line routes together, to make a longer route. However, that would have entailed having about as many stairways climbed as descended, and that goes against my normal habit of climbing as many stairways as I can, so I decided to build my own route from the base set of stairways. Thankfully Susan Ott and Dave Ralph, who built the Seattle All Stairs map, put photos and step counts in the markers for all of the stairways, so I copied those markers into a Google map of my own, and changed the marker shapes and colors to match the conventions I use in my own route maps, as a stairway layer. Then knowing that the stairways tend to climb radially toward the center of the Queen Anne hill, and thanks to Doug Beyerlein, there is a safe pay parking lot by Roy and 3rd Ave N which I was able to use as my start/finish location, I was able to draw a route on a separate layer, that circulated counterclockwise in a 15+ mile loop. The originally drawn loop had close to 100 stairways (the actual total is 108 stairways including the ones I added, and other where multiple stairways were lumped together on the Seattle All stairs map), all the way around Queen Anne, as can be seen in this Queen Anne 15 Mile Loop Google Map. Here is an augmented still-image version of this map, with mileage flags numbered, the start identified, and including stairway/elevation stats:
For the most part, the stairways in the early portion of the route were similar to the first, concrete with one or two hand rails. All were useful pedestrian transportation routes allowing direct access to steep hillside/hilltop narrow streets, not directly reachable by car. The region is primarily a large bedroom community of narrow/hilly grid streets, and stairways when the hills become too steep for road links. Also noteworthy are the super-tall radio towers, like the one use by KING-FM, which can be seen in this photo of another stairway on 3rd Ave N, located above the stairway-pair in the previous photo.
Continuing westward, one of the stairways, 1st Ave W, at just over a mile into the route, had an interesting configuration, with a low left and high right side sidewalk because of a cross slope. The stairway leading from this dead-end street to the street above had a common upper stairway, and a second stairway to bring the left lower sidewalk up to the lever of the upper right side sidewalk. Here is a photo I shot of this 87 step, stairway pair in the dim and hazy morning light.
Continuing past the two mile mark and more stairs up-roads down, walking through quiet older residential neighborhoods, I rounded the bend at the west side of the region to head northward. On the next upward climb, I reached a very tall and long concrete retaining wall, the Wilcox Wall, that has a rather ornate pair of substantial 72 step stairways connecting the upper and lower parallel 8th Ave/8th Place roadways that it separates. It is impressive engineering, nestles in the tree covered slopes of the region.
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