How to Create Stairs in Sketch. Up 6 Steps with Pictures1. Create the platform that you will need to build the stairs from. Darkstar One Patch 1.1 more. Most likely, it will need to be perpendicular to a building. Create two 1. 2 lines perpendicular to each other. Attach them to the platform that you created. Copy them and attach them, repeatedly. SketchUp. 405K likes. For help and support go to http SketchUp is 3D modeling software that allows you to create anything you. SketchyPhysics is a realtime physics simulation plugin for SketchUp created by Chris Phillips. See extended versions maintained by PituPhysics viewtopic. D SketchUp Community for Design and Engineering Professionals. Do this until they reach the floor. At the bottom of the stairs, draw a line going back towards the way they came from. Use the inference point to stop it at the right location. From that point, draw a line to the origin of the stairs to complete the surface. Once you complete the loop, the surface will fill in. Create-a-Test-Structure-in-SketchUp-Step-6.jpg/aid1605594-v4-728px-Create-a-Test-Structure-in-SketchUp-Step-6.jpg' alt='Sketchup 6' title='Sketchup 6' />Click on the PushPull tool to widen the stairs. Use inference to match the width of the platform. Sketch. Ucation. Well done to the winners of our monthly 3. Dconnexion Spacemouse raffle. Charles Thomas and David Cunningham are proud owners of a Space. Mouse Enterprise and Space. Mouse Wireless respectively. To be in with a chance to win this month just follow the link below to enter. Raffle closes on the 1. February at 1. 2pm GMT. Enter Raffleaffle open to Premium Members only. For an exclusive 2. Space. Mouse device check out our partners page.