I am looking for a model of a three foot wide stairs that starts out with two treads then a 3 by 3 foot landing with a turn right (or Left could mirror it) and then continues up about another 10 or so steps to a second floor with the ground floor having a standard floor and ceiling height of 8 feet. I have looked all over with no luck, I have found the reverse with about 10 steps up a landing and turn to another two or three steps. I do not want a winding stairs but a midway landing and a 90 degree turn to continue up to the second floor. I do not know how to convert from any other format to get it useable in sweet home 3d at present. Or do I know how to use another 3d drawing application to make what I need.
Thank you