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Forums >> Revit Building >> Technical Support >> Craeting roofs which slope from one level towards another lower level
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I live in Lancashire and have to constranly draw plans for houses that are on a hill and whos roofs slope in the same direction as the hill. As far as I can see revit is incapable of doing this simple task. Does anyone have a solution
Terry Duerden MRICS
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Can you elaborate or provide a sketch? If you mean connect two offset walls with different elevations, use the roof by footprint and pick walls using your 2 offset walls in question. set the BASE LEVEL in the ROOF PROPERTIES to either one of the levels (assume level 1 or level 2, it won't matter which), and while still in the edit mode, pick the eave that does not correspond to the BASE LEVEL and in it's properties under CONSTRAINTS, set it's BASE OFFSET FROM LEVEL to the difference between the two levels. e.g. if level 1 is 8' lower than level 2 and you set the BASE LEVEL of your roof sketch to level 2, then set the BASE OFFSET FROM LEVEL of the level 1 eave to -8'. this only works with a gable. hipped roofs like the eaves to be aligned. if you can figure out an easy way to have a hip roof morph into a gable at the lower level i would be much appreciative.
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is it a skillion roof? is it heap roof?
why can't you just create a slop arrow in the roof sketch that will have the same fall as your hill?
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Hi Telboy here
Thanks for your reply
I have a duo pitched roof to create, easy enough usually. The ridge and the eaves slop downwards from level three at the highest point. The lowest point of the ridge and the opposite end of the building is 600mm below level three. In other words the building is on a slope downwards and the ridge also slopes downwards, The ridge and the eaves follow that slope downwards by 600mm. For the life in me I cant find a way to tell Revit this.
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can you post a little sketch for me?
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Hi Eldados
I have posted a reply with a sketch of a front elevation.
By the way I have never heard of a skillion roof. I suppose heap is a mistype and you meant hipped/.
Kind regards
Terry
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interesing question - eldados will have a better answer, but maybe this will help. maybe create a roof, or rooves, and then cut openings in them to emulate your skewed edges of rising eaves and ridge. we find it ok to create a roof in plan, and then go to a sect or elev, and move it up or down till it is right, then go back to plan, adjust. another trick is you can put the slope angle on a skillion roof, at the upper edge, with a minus value. i suspect you will need to create two skillions and join them at the ridge.
hope some of this helps. love to hear what you end up doing.
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What on earth is a skillion roof? The problem seems to be that revit wants to place a roof on a level therefore you cannot make the eaves at different heights from one end to another.
The scenario is a Building with two gables, a ridge going from one gable to the other in the centre of the building. Each side of the gable has a 30 degree pitch. The ridge slopes down from one gable to the other. This is a simple scenario in UK as many roofs are created on buildings in this way. Revit seems to assume that all roofs have their eaves at the same level on a particular elevation. It is easy to make an eave lower at the front elevation than that at the rear elevation you just sketch a profile. However, even with this the eave continues at the same level fro the full length of the building and the wallplate is level. I dont want the roof, the ridge or even the wallplate level but sloping on a sloping wall.
By the way please do explain this strange term "skillion" to me. Never heard it in the UK.
Best wishes and thanks for the time taken to reply
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Creating two separate roofs and joining at ridge does not work!
It simply puts a lope on the roof face and the eave stays at the same level. You do not seem to be able to make a single eave at two different levels. It seems an eave has to be olong a level in Revit.
I cant believe the guys at Revit have not considered this situation.
terry
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It seems like you could use the Roof by Face command in the massing menu -- use the Solid Blend command in Create Mass mode to model a mass that has the appropriate shape, thenwith the Roof by Face command, you'll just click on the top faces of your mass model, and a roof will appear. You can then manipulate the mass model if need be, and then if you select the roof, you'll get an option to Update, and the roof will then realign itself with the new shape of the mass. Hope this helps.
-Erin
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still can't see the sketch...
a skillion roof is a roof that slops one way, in revit, either by define slop on one side, or with a slop arrow.
is this what you mean or am i missing the point???
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Eldados
No I dont mean that I was simply asking you what a skillion roof was. This is a lean to roof in UK.
I wanta double pitched roof going from east to west elevation. The ridge to this roof has to have a slope 600 lower that say level 2 or 3 consequentl;y the eaves must also slope in the same direction. Revit apears to always want to place eaves at a level and does not seem to allow you to slope the eaves lower than the level placed on. I am going to have to pay £800 to a consulatncy to come and sort this out but I am not convinced that it can be sorted.
Would love help before I part with that sort of cash.
The file showing sketch is attached to my second message in the string
Terry
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Seriously, Roof by Face is the answer. I just tried it out -- it took all of two minutes. It produced a gable roof with a sloping eave. Let me know if you want more detailed instructions for this process... I'll even let you keep your 800 pounds.
Post edited on 2006-03-28 16:31:50
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p.s. I don't see a sketch anywhere -- I assume I understand what you're asking for -- look at this jpeg and see if that's what you're after.
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Thanks Erin
This looks like what I am trying to do.
However, I cannot figure roof by face out. When I click on roof by face I am unable to select any faces. I have dreated a box and assumed that face means a wall face.
If you can let me have some instructions I would be very grateful
Terry
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