Landings- Open Unenclosed Stairway
Course: DD-013 | Length: 5:26 mins | Instructor: Dean Homicki
Chapters
00:22 - Learning Overview
01:50 - Learning Session
02:16 - Let’s Begin
05:25 - Learning Resources
Transcript
This learning session will cover the use of Warning TGSIs on an:
Open Landing, on an Unenclosed Stairway.
Welcome to staebl.academy TGSI Design Diagram 013. I’m Dean Homicki and I’ll be your guide for this course.
Learning Overview
Let’s review one type of use with TGSIs on an Open Landing on an Unclosed Stairway.
Both the Bottom and the Top approaches to the Stairway have ‘Open Areas’ - that is, they are accessible at and from multiple angles of approach to the hazard. The hazard is the Stairway.
Let us now extract what the Australian TGSI Standard requires with this situation.
When a Stairway, Ramp, Escalator or Moving Walkway, leads to an UNENCLOSED area at the top or the bottom, Warning TGSIs Shall be, set back 300 mm with a tolerance of +/- 10 mm, from the outer leading edge of the Stair Nosing to a minimum depth of 600 mm, for the full width across the Path of Travel, and, must be perpendicular to the direction of travel.
TGSIs for this application shall also conform and perform, with the applicable Slip Resistance and Luminance Contrast Requirements.
Here is a real-life situation of a Staircase showing the Top and Bottom with Discrete Warning TGSIs installed.
We are going to now convert this image it into a perspective line drawing and view how TGSIs have been used in this application.
Here’s the line drawing of the image.
Learning Session
How to use TGSIs in this situation.
In this example, people can approach this stairway from various angles at the Bottom and Top of the Stairway.
For the orientation of persons who are blind or vision impaired, applying this knowledge enables us to determine how to use TGSIs and conform to the Normative and Informative Guidelines of the Australian TGSI standards.
Let’s Begin
At the Top of this Stairway, we have an ‘Open Area’ - that is, an area that is accessible at various angles of approach to the hazard. The hazard is this situation is the Staircase. This is also the situation on the Top of the staircase on the opposite side.
Each staircase leads to and from a shared landing that is an unenclosed area. It considered to be unenclosed as the Landing is accessible from an entry point on the landing.
The stairway can be accessed from, and to this entry point, by approaching it from either staircase on the left or on the right.
The measurement for this TGSI Application begins from the start of the leading edge of the Stair Nosing or (the face of the Stair ‘Riser’ if the Stair nosing is recessed into the going (or step) of the stair, we require Warning TGSIs to be set back from the face of the stair or the edge of the stair nosing, 300 mm with a tolerance of +/- 10 mm for a minimum depth of 600 mm. This equates to 12 TGSI nodes at 50 mm spacings. And applied for the full width across the Path of Travel and, must be perpendicular to the direction of travel.
On both sides of the Unenclosed Landing, and at the bottom of each of Staircase, the measurement for this TGSI Application, begins from the start of the leading edge of the Stair Nosing, or (the face of the Stair ‘Riser’ if the Stair nosing is recessed into the going (or step) of the stair.
And so we require Warning TGSIs to be set back from the face of the stair or the edge of the stair nosing, 300 mm with a tolerance of +/- 10 mm for a minimum depth of 600mm. This equates to 12 TGSI nodes at 50 mm spacings.
And, for the full width across the Path of Travel and must be perpendicular to the direction of travel.
As the staircase has handrails installed on each side of the stair, the TGSIs shall be installed in between the Handrails in this instance as this is the accessible path of travel.
TGSIs for this application shall also conform and perform, with the applicable Slip Resistance and Luminance Contrast Requirements.
And here is a real-life TGSI application once more.
Learning Resources
That’s the conclusion for Warning TGSIs on an Open Landing, on an unenclosed Stairway.
You can also access this course as a concise series of design diagrams in the resource section of our website staebl.academy/design. To access this resource now, click on the link below this video.
Thanks for joining me here at the staebl.academy. I look forward to guiding you through another learning session in the near future. Bye for now.
Listen
Click/Tap the audio player below to listen to the written transcript of this design session as an audible version. This is a streamed broadcast from the Staebl.academy site.
Diagrams
Click/Tap on an image from this learning session to view it as a larger picture. You will then be able to scroll through each individual design diagram in this slide-deck for a closer inspection.
Sources
TSA-TGSI-LEARN-DD-013 - This staebl.academy course module has drawn information from the following sources:
AS/NZS 1428.4.1: 2009 Design for Access and Mobility: Means to assist the orientation of people with a vision impairment - Tactile Ground Surface Indicators - Section 2, 2.1 (a), 2.2 (a) & (b), 2.3.1 General, 2.3.2, 2.3.3 (a), (b), (e) & (g), 2.4 Paragraph 1, Fig 2.2 (B) Drawings (b) & (d), Fig 2.3 (A) Drawings (b) & (c), Fig 2.1 (a), (b) & (c) AMDT No.2 Dec 2014
AS 1428.1: 2009 General Requirements for Access - New Building Work - 11 Stairways, 11.1 Stair Construction (a), (b), (d), (e), (f), (h) & Fig. (26a) & (26b), 11.2, Fig. 28 (a) & (b)
