Hi Robert

This is not possible as the stair gets calculated between his origin and endpoint. If you do not have any possibility to get more space the only way is to remove 1 step which will give you a better tread with but the height will be also significantly higher. ( 241.7mm!!)

The tread width is measured from nose to nose and is therefore dependent on the total calculation. you can extend the steps but this will not make it any safer as the tread width value will not change. You do this by setting a higher nosing value. This will make the step wider but not safer. 

Sometimes you just get limited by the available space so it becomes a compromise between riser height, tread width and structural works on the site.

regards

Michel 

Hi Robbert

I added a landingstep of 70mm inside the current size. So this means the total length of the flight last step included is 2300mm

If you confirm this is ok I will send you the documents 

regards

Michel 

Hi Robert

penetration should be set on 15mm only 

there is also no penetration from the riser top into the step.

I would also extend the stringboard in front of the first step by 20mm

What about the landing step?  The stair top does not seem to be finished. The left length of 2300 is unit the nose of step 13. Please recheck 

regards

Michel