Creating an octagonal skylight

[Sahay_R]

This is what I need to create. The skylight sits on a wall 1'-0" high.  The footprint is octagonal.

I am trying to start with a mass, so that I can create curtain walls by face. How do I create the mass? Or is there a better way out?

[barthbradley · Accepted solution]

Octagonal? Looks like 10 sides (Decagonal).  

Why not  apply Sloped Glazing to a Decagonal Mass? 

[Sahay_R]

That too, @barthbradley. Generating the octagonal mass is the problem here. Idiot-proof directions, please.

[barthbradley · Accepted solution]

Place a Decagon on 1 level and another smaller Decagon on another level directly above it, select both Decagons and Create Form. 

[Sahay_R · Accepted solution]

Oh brother - I did it again. Found the solution. Thank you @barthbradley for reminding me of the magic words Sloped Glazing....

https://www.cadlinecommunity.co.uk/hc/en-us/articles/204332112-Revit-Architecture-2016-Creating-Slop...

[ToanDN]

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@barthbradley wrote:

Octagonal? Looks like 10 sides (Decagonal).  

Why not  apply Sloped Glazing to a Decagonal Mass? 

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That looks like an Octagon but a couple of faces are splitted.

[Sahay_R]

But @barthbradley, what I  want is an octagonal pyramid with a pointy end. What you suggest is a truncated octagonal pyramid (ie no pointy end). Please elucidate for my education and edification- even though Roof By Footprint has already granted all the wishes of my little heart.

[ToanDN]

Draw it as a roof by footprint and change it to sloped glazing type.  I see you have mentioned it so I am surprise you needed to ask. 

[constantin.stroescu]

for a Mass, you can, also use, if the edge are equal, a sweep : a Profile - a trapezoid shape place in the center , and a path that consists of the base an eight sides figure

[barthbradley]

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@Sahay_R wrote:

But @barthbradley, what I  want is an octagonal pyramid with a pointy end. What you suggest is a truncated octagonal pyramid (ie no pointy end). Please elucidate for my education and edification- even though Roof By Footprint has already granted all the wishes of my little heart.

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What??? You can create, as I described, with the smallest "pencil point" you want.  1/32" tolerance in Revit. Anything smaller, you need a physicist.  

[constantin.stroescu]

this method (sweep  triangle in this case ) allows Pyramids 

[Sahay_R]

@constantin.stroescu - maybe I'm missing something - when I tried to sweep a triangular profile for a Generic model in place, Revit gave me a very very rude response saying something about intersecting geometries - hence the questions....

@ToanDN - I posted the question before finding a solution. A simple case of Think Before You Click. 

[constantin.stroescu]

I used Conceptual Mass not Component Model In Place.....Even in Mass Editor the word sweep does not appear, in fact that is a sweep...isn't it?

[constantin.stroescu]

It works also with Component Model in Place , but you have first to create a vertical called Reference  Plane through the center of the octogon  and use that plane to place the shape....

[constantin.stroescu · Accepted solution]

it works in both cases.....

[Sahay_R]

@constantin.stroescu - THANK YOU! Those were totally idiot-proof directions!

Also @barthbradley - I followed your way very successfully too - with a teeny-teeny circle at the upper level. 

Aaahh, the wonders of Revit!