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cut strings drawings
December 6, 2016
2:39 pm
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Ness

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Hi Jasper,

Landing steps are usually less wide than others.

The exact width depends on how you want to connect the stair with the upper floor level.

The way you connect the stair depends on the stair elements and the upper floor configuration.

For cut strings the landing step width is very important as it will determine how the sting meets the floor joist.  

The wider the landing step the higher the lower sting edge will meet the joist:

landing-step.jpgImage Enlarger

In the above drawings the left stair has a narrow landing step that makes it difficult to assemble the string to the joist.

The right stair is what I consider the best situation where the lower string edge meets the face of the joist. This then determines the right width of the landing step. However this often means that the landing step is fairly wide and reduces the total tread line which can be a problem if the stair well is a tight fit.

You have to bare in mind that you must assemble the structural lower part of the string to the joist or first floor, so in the left stair you will will either have to extend the string under the ceiling:

string-structure.jpgImage Enlarger

 

or use a hanging bracket or post.

string-fix.jpgImage Enlarger

This type of assembly reduces the width of the landing step and maximises the tread line length.

In your case you have plenty of room so you can set the landing step to the width that you want.

To determine the ideal width of the landing step you should make a drawing of the arrival with the string and the joist height.

If you want me to do this, I’ll need to know if you have a newel on the end of the string, what elements are around the stair well at the first floor level (assembly with eventual balustrades or railings) and the joist height.

All the best,

Ness

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December 6, 2016
6:33 am
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jesper grube

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hi Ness I have thought about how the landing step should look like and I can not figure it out. would you make it as big as the other steps?

or as large as it is on the drawing you made.
November 21, 2016
8:07 am
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Stefan

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Hi Jesper, just right click on the file and select ‘save link as’ or ‘save as’. That works. All the best, Stefan

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November 21, 2016
7:13 am
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jesper grube

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hi Ness first thanks for the great help you provide.

Unfortunately I can not download the file sds, I do not know why. It just open a text document.

Maybe you can send it to my email jespergrube@gmail.com

all the bestsmile

November 19, 2016
10:17 am
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Ness

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Hi Jesper,

Sorry to reply so late, but I’ve been away on a trade show the last week.

For your stair, unfortunately you can’t make the risers shorter in StairDesigner.

To do this you have to modify the DXF files or the production drawings by hand.

As well as this for this type of stair I would suggest that you make the risers sit on the step and eventially notch the back of the steps into the cut strings like this:

step_notches.pngImage Enlarger

Once the StairDesigner model is set up like this you can manually reduce the riser lengths.

The risers can be just screwed from under the step as in the above image or grooved into the step like this:

groove_risers-1.pngImage Enlarger

In this case you’ll have to also reduce the groove length to suit.

The easiest way to check the different heights and clearances is to make a SketchUp model and insert the StairDesigner 3d DXF file.

I’ve set up and attached a quick model for you :

jesper02v01-3d.pngImage Enlarger

As you can see from the model your stair will fit neatly into the corner with no problem.

However I see that you don’t have a landing step, is this done on purpose?

In general I alway suggest using a landing step if possible.

I attach a StairDesigner model jesper02v01.sds as an example of how I would set up a stair like this.

All the best,

Ness

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November 17, 2016
7:18 pm
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jesper grube

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Hello Ness I have a problem with risers I want that they only go out to the cut strings so the steps floats in the air if possible

I also need some measures on the stairs because I have a window at the bottom of the stairs which I hope I do not hit

I hope you understand what I mean, I understand if you do notwink

I have attached a sds file but it is only 3 kb so I do not know if it can be opened




risers-1.jpgImage Enlarger
Problem-with-window-1.jpgImage Enlarger
Problem-with-window-2-2.jpgImage Enlarger
November 11, 2016
12:35 pm
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Ness

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Hi Jesper,

StairDesigner has several mathematical ways of drawing the stringers all depending on the step positions.

v6 and v7 also each end up with different string shapes.

The important information is the step positions, the actual string edges drawn by StairDesigner are really not import as it’s easy to change the shape on the StairDesigner drawing either manually on the print outs, or in the DXf files or simply when marking out the boards.

All the best,

Ness

November 10, 2016
11:05 pm
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jesper grube

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Hello Ness just what i was missing. Thank you

Now I have just a few questions for stair designer. Can I make the cut strings Straigt at the bottom so they are easier to cut.? 
November 8, 2016
10:32 am
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Ness

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Hi Jesper,

I attach the production documents for a stair like yours.

You’ll find in the “jesper01v01” folder the dxf files per part.

The DXf files will produce the developed inner (yellow) and outer (red) faces of the cut strings:

cutstring-dxf.pngImage Enlarger

The main workshop document is the jesper01v01.sds.pdf file.

Hope this is helpful,

All the best,

Ness

jesper01v01-3d01.pngImage Enlarger

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November 5, 2016
6:45 pm
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jesper grube

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Hi Ness had som problems with screenshot in the demo version. but found a sulousion.

here is som pics

Jesper-Grube-SS1.jpgImage Enlarger

Jesper-Grube-SS3.jpgImage Enlarger

November 5, 2016
5:35 pm
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Ness

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Hi Jesper,

Can you post an example of the stair you are building and I’ll send you the cut string output.

All the best,

Ness

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November 5, 2016
1:39 pm
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jesper grube

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hi before I buy stair file I would very much like to see how Detailed the cut string drawings are.
so if there is someone who can show me an example I be happy
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