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1 He/she will likely be using a step-to pattern in which he/she places both feet on each step. 2  18-20 months-By the time your child is this age, he/she should be able to walk down the stairs as well, placing both feet on each step and using a railing for support.
Building Your Stairs. The beginning step is to notch the stringer material so that not only the treads, but also the risers can be built into them. Use a carpenter's square and stair gauges to do so. Secure the stringer to the lower landing with a bolt.tair Vocabulary. When you are planning the stairs, you must plan the total run, which is the measurement o f the horizontal distance from the beginning of the lowest step to the edge of the upper landing. The terms run and rise refer to the measurements for each individual stair.