Laminated Platform
| Author | Post |
|---|---|
| Matthew A Pike | 2.15.5.3 and 2.15.5.4 and 2.15.5.5 give some requirements for laminated platforms, but there does not seem to be a definition nor a description of what constitutes a laminated platform. Does anyone know what they are? Can you explain it here? |
| Posted Sep 26, 2023 | |
| John W Koshak |
From the 2013 A17.1/B44 Handbook: 2.15.5.4 Originally all platforms, whether passenger or freight, used a wood flooring supported by a steel frame. The modern elevator platform utilizes an all-steel construction, which is more efficient and lighter than its steel and wood predecessor. In the early 1970s, the ASME Al7.1 Code responded to a changing technology and introduced provisions for laminated platforms, which consisted of steel-faced plywood. A laminated car platform is a self-supporting structure, which forms the floor of the car. It directly supports the load and is constructed of plywood with a bonded steel sheet facing on both the top and bottom surfaces. See Diagram 2.15.5.4. |
| Posted Sep 26, 2023 | |
| Matthew A Pike |
Thank you John for such a quick response. Ah! finally found the diagram in the handbook. Is this type of platform secured to the car sling at the bolsters and the stabilizer bars like a framed unit? Does laminated specifically mean plywood bonded to steel? Or could it be other laminated materials like fiberglass or carbon fiber? |
| Posted Sep 26, 2023 | |
| John W Koshak | Of the ones I am familiar with, it is always steel to have fire deterrence qualities. I have not seen these materials used. |
| Posted Sep 27, 2023 |