How to Build Steps of Precast Concrete
Precast concrete has the advantage of saving you time and labor. There is also versatility in the height and width available. Because they are hollow, precast steps are lighter than concrete stairs which are poured in. They also tend to settle less than poured concrete, which means less work in the future.
Directions:
- Use a shovel to clear the area you are planning on putting the precast stairs. The area should be a little larger and wider than the base of the structure. You will also need to dig eight inches for the base.
- In the area you have dug, fill it halfway (four inches) with pea gravel. This will prevent erosion of the soil under the stairs.
- Set the crane into place. The crane operator will need sufficient room to swing the boom to safely put the stairs into place.
- Set up the rigging to the crane's picking hook, which should then be affixed to the picking points made into the step. Connect the chains of the rigging with shackles.
- Tie ropes to the eyelets on each side of the stairs. You will need two people to help control the steps with the ropes during the time the stairs are above ground, and when the crane is moving them towards the intended placement.
- Using the ropes to guide them, lower the stairs into position. Make sure to push the stairs into just the right position when nearly touching the pea gravel. When they are settled, take the rigging off the steps. Take off the eyelets using a rebar, sending it through the eyelet and unscrewing it in a counterclockwise direction.
- Mix the water and the grout together. You will want a consistency slightly thicker than that of pancake batter. Apply the group with a trowel between the wall and the precast steps. Use a mason's jointer to smooth over the grout for a smooth finish.