Hi Duayne,

Square and rectangular are always available. Round is only available on vertical elements but I will mention this to our developers together with the penetration option which only relates to horizontal tube rails

regards

Michel 

Hi Duayne,

The size you see on the cutting list is the diagonal measurement between the 2 ends which creates the difference because the width of the handrail is bigger than the width of the horizontal spindle. The actual side length is equal

regards Michel

Hi Duayne,

Ok, What I would do as in the below picture. I would double the penetration (3/4″) in the newels 3, 11 and 8 and also in the left stringboards 3 and 4. (red rectangle). Production-wise I would leave all penetrations to 3/8″ but double the penetration value in the above-mentioned parts. That leaves you with a 3/8″ expansion gap in the back of the landing.

On left stringboards 2 and 5, I would fix the landing with screws but you have to predrill the hole for the screw with a bigger diameter than the screw shaft to allow lateral movement. (arrows in the picture). On the front side of the landing, I would fix the landing firmly so that the retraction and expansion will be lead to the back where you have the extended penetration. 

In the grain direction, you can leave a little extra moving space but this will be very reduced as the main correction will happen perpendicular to the grain.

As you noticed I moved right handrail nr2, newel 5 and 6 about 3/8″ to get rid of that piece of step in the back of the newel as this will be negatively impacted

Hope this helps

Michel 

Hi Duayne,

Sorry for the delay on this.

It is about the top landing. How is this supported? Is it on a concrete base? The expansion and contractions will be mainly perpendicular to the grain and in a very reduced way in the grain direction. 

Is it visible from below? I am trying to picture the finished situation. If not visible from below you can use a plywood base and make separated floor elements on top.

Regards