Doug_N

Hopefully my analysis helped.

Here is a video of my interpretation of the problem and a possible solution. Landing Wrong Elevation_01.mp4

Is this the area that you are referring to as a landing?

Backup the plan file as a zip (right from the CA save menu) It will be a lot less than 14m then.

Please post the plan file. The PDF does not show how the structural parameters are set for this area.

Maybe you should consider SketchUp.

Maybe you will get more interest if you spell the name of the group correctly. Just saying....

Jim, I tested your workflow, and got the same result as you. This seems to be a bug and should be reported. Error reported..

It is true you have to be careful, and the resolution of the system is to the nearest inch. Field measurements are still very important.

I think the wall thickness shown is because of plumbing chases and an actual support wall. Matterport is pretty good at guessing wall thicknesses from stitching scans together. That being said, it would be a great ideal to take some actual measurements to make adjustments when doing the CA model.

Dershem is right! Here is your file with the balcony changed to bonus. You can then relabel it to balcony, and then rendering works fine.

OK, so thanks to DBCooper, I have this whole deck railing thing sorted out. Please see the railing library file, and the sample deck. This deck is only to demonstrate the principles of constructing a deck with cantilever balustrades, offset railing and stacked profile top rail. Everything you will need should be in the attached library and the deck sample file. Sample Deck with Cantilever Balustrades.plan External Deck Railing.calibz

Hi Coop. Thanks for the method. Railings in CA are not intuitive but with perseverance and some ingenuity it is a pretty good tool. Great insight. Thanks again.

Here is a sample of two versions of a cantilevered guard rail, one doe with an assembly of 3d solids and one done with an automatic railing using a moulding profile for the top rail. The auto railing, unless someone can think of a way to do this, the top of the balustrades are flat. Assembling the model can be done with sloped tops. Deck Picket Cantilever Pickets.plan

This can certainly be done. Deck.plan

Separate plan files for all the reasons listed by Ben

2 x 6 ceiling joists may be able to support a floor, depending on the span of the joists. Typically, ceiling joists are joined over a wall which may not be a actual load bearing wall because of support from the structure of the first floor. I would recommend that you contact a structural engineer to review the loads that will be imposed by your proposed attic room. That may be the best money that you spend on this project. The cost shouldn't be prohibitive for a short meeting. You should also see if a building permit would be required for the contemplated construction. If one is required, and you don't apply for one, and a neighbor complains, it could get very expensive quickly.

One more hint, if you have a second floor with a roof that ignores the upper floor, make sure that the floor area has a room height definition that makes sense, and that a flat ceiling is part of the room DBX. Also make sure that the open to below area stairwell has the same ceiling height as the rest of the room.

Hi Mackenzie, I sorted out some of the problems that you listed in your post and adjusted the stairs a bit. The pictures posted here were not my final version of the plan file (also attached) but it may help you get to the goal that you are trying to achieve. I have suggested a 7' ceiling to get the widest flat ceiling practical using the 12:12 pitch that you mentioned. It is not possible to see what the ceiling joists are for the first floor, but you should make sure they are sufficient to support a typical residential floor load. Attic Walls.zip

CA is a great tool for doing interior design. I often sell my projects based on a few interior renderings.

This was just a very quick concept edit to see if this is in the direction that you were looking for. There is more work to be done if you would like this to be a gull wing roof, working on the design with auto roof builds turned off. sample.zip Untitled 1.zip

Post your plan file so that the error can be analyzed.

Hi Mackenzie. First question is are you sure about the slope of the roof. What is the actual pitch of the roof, and do the rafters sit on the ceiling plate of the exterior walls? Using the model that you posted there isn't anywhere in the attic that would give you enough ceiling height for what you are talking about. Here is a cross section of the highest part of the attic. I changed the floor thickness to 2 x 8 floor joists (probably what was used for the ceiling joists) but that is just a guess. I also reconfigured the stairs to have 10" run and about a 7" rise. You can set your desired attic ceiling height to, say 7', and set the roof default to ignore the upper floor. Now you can create walls that will fit between either the bottom surface of the roof or the ceiling height of 7', whichever is lower. But first you need to make sure the model of the shell of the house is correct, including the roof pitch. I suspect the pitch is more like 16:12 or so. If you want to do new floor joists, and leave the ceiling joists undisturbed, they you just the method that Eric suggested, setting the ceiling height of the second floor to 1 inch or so, and then create a 3rd floor. That would also slightly raise the roof, but then you can lower the roof by the same amount that it got raised by adding the new floor. Do a before and after cross section printout to determine the amount that the roof got raised to figure out how much to lower it. Hope this helps. Attic.plan

Here is the code for winders in stairs in Canada (using the Ontario Building Code version). Here is what the code says about the narrow end of tapered stairs (as in winders). Ontario Building Code - Volume 1, O. Reg. 332/12, Article 9.8.4.3. of Division B 9.8.4.3. Dimensions for Tapered Treads (1) Except as provided in Sentence (2) and Articles 9.8.4.5. and 9.8.4.5A., tapered treads shall have a run that, (a) is not less than 150 mm (5-7/8") at the narrow end of the tread, and (b) complies with the dimensions for rectangular treads specified in Table 9.8.4.1. when measured at a point 300 mm (11-13/16") from the centre line of the inside handrail. (2) Tapered treads in required exit stairs shall conform to the requirements in Article 3.4.6.9. (3) The depth of a tapered tread shall be not less than its run at any point and not more than its run at any point plus 25 mm . Ontario Building Code - Volume 1, O. Reg. 332/12, Article 9.8.4.5. of Division B 9.8.4.5. Winders A-9.8.4.5. Winders. (1) Stairs within dwelling units are permitted to contain winders that converge to a centre point provided, (a) the winders turn through an angle of not more than 90°, (b) individual treads turn through an angle of not less than 30° or not more than 45°, and (c) adjacent winders turn through the same angle. (2) Where more than one set of winders described in Sentence (1) is provided in a single stairway between adjacent floor levels, such winders shall be separated in plan by at least 1 200 mm (47 -1/4").