Diy Back Door Steps . Cut four 64” pieces out of two of the 2x6x12’s. See more ideas about porch steps, wooden porch, building a deck. ee9f01a8ebb9ff26bd00951eb688060d.jpg 720×540 pixels Patio stairs from www.pinterest.com Sit in position so the horns at the top of the stringer sit on the deck and the channels routed into the stringers are level. From ‘ houzz ‘ via ‘ nicolock ‘. How to build steps for my back door step 1.