Yes. The top step can be used in square, round or mezzanine applications. Should you have further questions, please call our Sales & Customer Support toll free at 888-782-4758 Monday - Friday 8:00 AM - 5:00 PM Eastern time.
Its weight limit is 2000 lbs.
The height between each riser is based on the height of the installation and the number of treads used. It is adjustable as the standard kit is adjustable between 99" and 120". You can visit our website at www.arkestairs.com and access the landing page for the PHOENIX model and scroll down to use the staircase builder tool to enter your specific height and dimensions and it will produce a drawing showing the tread positions and the riser height. Should you have further questions, please contact our Customer Sales & Support team via our toll free telephone number at (888) 782-4758 and our team will be happy to assist.
It is possible to "double stack" the Phoenix spiral staircase if there is an intermediate landing to be able to attach the landing platform at a mid-way point in the install. It is dependent on the exact measurements from finished floor to finished floor of each landing area. To be able to better advise based on the specifics on your installation, please contact our Customer Sales & Support team via our toll free telephone number at (888) 782-4758 and our team will be happy to review the complete details and offer a solution for your consideration.
The spacing is 5.5''.
The 47" diameter staircase is the smallest of the 3 diameters available including also a 55" and 63" diameter model. The treads width of the 47" diameter model when measured from the inside edge of the center pole to outside edge of the stair tread is 22 1/2". The width of the tread for the 55" model is 25 1/2" and the width of the tread for the 63" model is 28". Should you have further questions or need additional assistance please contact our Customer Sales & Support team via our toll free telephone number at (888) 782-4758.
The steps can rotate clockwise or counter clockwise but that's about it. From the entry edge at the top of the stairs to the exit step at the bottom is a rotation of about 340 degrees, so your entry and exit directions are approximately the same. So the main question is whether or not you want the exit step to be on the left or the right of the pole as you exit the steps. For example, in the stock picture the bottom exit step is to the left of the pole but I installed mine to the right. When I first fanned out the steps I saw that the rotation was not good, so I simply fanned them out in the opposite direction. Once you put the balusters in, they fix the horizontal distance between the steps and you can't change that. So it will always rotate about 340 degrees to the left or to the right.