Start by measuring the rise (vertical height) from grade to the top of the deck. Divide that measurement by 7 inches or whatever stair rise you prefer. The result tells you how many stair risers are required. To determine the total run of the stairs, multiply the number of steps required...
Pre-mixed bags are sold by companies like Quikrete or Sakrete and come in 50-pound, 60-pound, or 80-pound sizes. Using bags can be easier than ready-mix when you have many small pours or a small project where a truck is not practical or cost-effective. But keep in mind that ...