PRECAST STAIRS WITH 3 RUNS

[hliS658H]

The level 1 to level 2 is 16'; starting from level 2 are typical levels, the level to level height  is 10'-6".

For typical levels, the stairs has two equal runs, each run has 8 treads/9 rises, 7" riser and 11" tread;

I want to make 3 runs for stairs from level 1 to level 2.

1st runs to 6' in height with 10 treads/11 risers;

2nd and 3rd runs 5'-3" in height each and they are identical with the typical runs and I can set the stairs as below.  However, for the 1st run, the riser is about 6 1/2" high, but not exact 6 1/2", so I don't want to give the riser height, I want to set the landing as 6' instead and let Revit do the work. But I don't see where I can set the landing for the 1st run?

[ToanDN]

You cannot have runs with different riser heights within one stair.  Create the first run as a separate stair with 6' climb. 

[barthbradley]

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@hliS658H wrote:

I want to make 3 runs for stairs from level 1 to level 2.

1st runs to 6' in height with 10 treads/11 risers;

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So, you want to do 3-flights to 16'-0"? In other words, 2 landings in-between the total run?   If so, why the varying riser heights?  Why not keep the riser heights consistent and live with a 6'-3 7/16" first landing height instead of forcing a 6'-0" first landing height? Is the 3 7/16" difference more important than the ergonomics and user experience? 

[hliS658H]

Yes , 3 flights with 2 landings. But I want to point out that due to different floor to floor heights, sometimes you can not have consistent risers and treads. For example, I can have 28 risers /26 treads with consistent dimensions from ground floor to second floor (16'-0"), however, the dimensions of riser and tread will be different from second floor to third floor (10'-6"). The way I design it is to make 3 flights from ground floor to second floor , they will rise 5'-6" + 5'-3" + 5'-3", and the typical stairs from floor to floor will have 2 runs, they rise 5'-3" + 5'-3", so there will be only one climb different from the rest ( Sorry, I meant to say 5'-6", but I made a mistake in math by saying 6').  I do not agree that this design of the stairs has disregarded ergonomics or user's experience.

[barthbradley]

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@hliS658H wrote:

Yes , 3 flights with 2 landings. But I want to point out that due to different floor to floor heights, sometimes you can not have consistent risers and treads. For example, I can have 28 risers /26 treads with consistent dimensions from ground floor to second floor (16'-0"), however, the dimensions of riser and tread will be different from second floor to third floor (10'-6"). The way I design it is to make 3 flights from ground floor to second floor , they will rise 5'-6" + 5'-3" + 5'-3", and the typical stairs from floor to floor will have 2 runs, they rise 5'-3" + 5'-3", so there will be only one climb different from the rest ( Sorry, I meant to say 5'-6", but I made a mistake in math by saying 6').  I do not agree that this design of the stairs has disregarded ergonomics or user's experience.

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You're confusing me now. "Different floor to floor heights"? "Second floor to third floor"?  Where did you mention that in your OP.   You only mentioned that you wanted to - and I quote - "make 3 runs for stairs from level 1 to level 2 - with a total elevation gain of 16'-0". 

Whatever.  My professional input is what it is. Take it or leave it.  We're just opinionating here.  All's good -- as well as respectful of differing design philosophies. 😉     

[hliS658H]

Model is not finished yet, but hope this section explains more clearly my intention.  Truly appreciate your input, just different opinion.