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    Outer supports for array of steps

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    • Dave RD Offline
      Dave R
      last edited by

      First, if you think you have to explode components to modify them, you need to learn about editing them.

      I'f I were doing what it sounds like you're doing I would make the geometry of a post (maybe the shortest one) and then copy it to make an array similar to the treads. Then edit each one in turn to adjust the height accordingly. Then make components of them. If you can use Push/Pull to adjust the height, you can use the double click option to quickly repeat the extrude distance on the supports.

      Etaoin Shrdlu

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      • pbacotP Offline
        pbacot
        last edited by

        Hard to say what you have to start. On the simplest level, here is an idea, which might apply to different scenarios. Do not explode the components.


        Screen shot 2012-12-14 at 6.45.47 PM.png

        MacOSX MojaveSketchUp Pro v19 Twilight v2 Thea v3 PowerCADD

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        • C Offline
          cattz
          last edited by

          Thank you. I realised about editing componants after I posted.

          http://www.longshots.co.uk/pics/treads.jpg

          Reality is only how the mind perceives it to be.

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          • TIGT Offline
            TIG Moderator
            last edited by

            That's a looooong staircase. ๐Ÿ˜ฒ

            For a stair's 'structure' it's normal to have 'stringers' - i.e. steel-beams running along the stair's sides to support the ends of the treads; or perhaps a beam, or beams, located below the flight to support it.
            These beams in turn are supported off adjacent cross-beams, walls or have columns/post to support them down to the ground/foundations.

            Incidentally, there are building-codes and safety-regulations that apply to all stairs - depending on their 'usage' - there should be horizontal 'landings' every so often - probably 12 to 16 steps. Also a long staircase should change direction after about 36 steps by at least 30 degrees in plan...
            A step's rise and its tread-going are also predicated...

            TIG

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            • C Offline
              cattz
              last edited by

              @tig said:

              That's a looooong staircase. ๐Ÿ˜ฒ

              Yes it's for the outside of an aircraft hanger.
              I'm only just trying different things out in GSU - not trying to comply with building regs. ๐Ÿ˜† but appreciate your input. Thank you.

              Reality is only how the mind perceives it to be.

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              • TIGT Offline
                TIG Moderator
                last edited by

                Even on large structures like Hangars and Gas-holders the stairs must be safe to use...
                Having hundreds of steps is a single line, without any landings would never get built, because someone will trip and fall and die... it'd also be extremely tiring to use, let alone frightening ๐Ÿ˜ฎ

                TIG

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                • massimoM Offline
                  massimo Moderator
                  last edited by

                  Here in Italy is max 14 steps before a landing.

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                  • TIGT Offline
                    TIG Moderator
                    last edited by

                    In the UK it's 12 in 'public building' and 16 inside houses and all other areas that are only accessed by able-bodied people - e.g. plant-rooms, hangar-roofs etc.

                    TIG

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                    • Dave RD Offline
                      Dave R
                      last edited by

                      No matter how many steps are allowed, it isn't GSU anymore and hasn't been since the summer. ๐Ÿ˜‰

                      Etaoin Shrdlu

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                      • C Offline
                        cattz
                        last edited by

                        @dave r said:

                        No matter how many steps are allowed, it isn't GSU anymore and hasn't been since the summer. ๐Ÿ˜‰

                        What is it now then?

                        Trimble sketchup - is that right?

                        Reality is only how the mind perceives it to be.

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                        • Dave RD Offline
                          Dave R
                          last edited by

                          Yes.
                          tsu.png

                          But you can just call it SketchUp. ๐Ÿ˜‰

                          Etaoin Shrdlu

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                          • GaieusG Offline
                            Gaieus
                            last edited by

                            @tig said:

                            ...there should be horizontal 'landings' every so often... Also a long staircase should change direction after about 36 steps by at least 30 degrees in plan...

                            Something like this?


                            proper-staircase.jpg

                            Gai...

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                            • Bob JamesB Offline
                              Bob James
                              last edited by

                              ๐Ÿคฃ

                              i7-4930K 3.4Ghz, 2x GTX780 6GB, 32GB DDR3-1600 ECC, OCZ Vertex 4 500GB, WD Black 3TB, 32TB NAS, 4x 27" Monitors, SpaceMouse Pro, X-keys XK-60

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                              • GaieusG Offline
                                Gaieus
                                last edited by

                                What??? ๐Ÿ˜•

                                Joking aside... Some architects would deserve living in the buildings they design. We have a certain one with quite a bit of fame here (all national awards they can get, professor of architecture at the university and such) and I know of a two storey house he designed where he forgot to add a staircase inside the house. Now imagine going upstairs every evening on the outside staircase in winter. ๐Ÿ˜’

                                (Worst thing is that the design and plan got the building permit)

                                Gai...

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