Bermudagrass, bluegrass, fescue, perennial ryegrass, buffalograss. Early classification started by the Greek philosopher Theophrastus who classified all plants into annuals, biennials, and perennials according to life spans, and into herbs, shrubs, and trees according to their growth habits.
Calculate how far you run by timing your workout and comparing it to the pace you set. A treadmill's speed settings typically range in pace from six- to 12-minute miles. Divide the number of minutes that you ran by the per-mile speed to calculate the total distance that you ran. For instance, if you use the treadmill for 60 minutes at a rate of 12 minutes per mile, divide 60 by 12 for a distance of 5 miles. Wear an external tracking device while running on the treadmill to automatically monitor distance if your treadmill is older or doesn't provide accurate speed or distance information.
Establish the run of each step to get the total run of the staircase. The run of each step should be no less than 9 inches (23 cm) and realistically at least 10 inches (25 cm). Multiply the total number of steps by the run of each step: 13 total steps x 10 inches = 130 inches (330 cm) total run.The total run is the horizontal distance the stairs will travel from beginning to end. The rule of thumb for treads and risers is that the sum of each should equal between 16 and 18 inches (40 and 45 cm). 2  So, if your riser is 7 inches (17.8 cm) tall, your tread should be anywhere from 9 to 11 inches (23 to 28 cm) long.