Step #1: Preparing the base.
We suggest you excavate the soil under the steps to a minimum depth of 8". Make sure the soil base is compacted.
Do not place steps on fresh fill.
After the soil is removed, fill the hole with #2 gravel to a level 4" below the grade of the first rise.
Now form and pour a 4" thick concrete pad the size of the footprint of the stairs. Make sure the pad is level and at the right elevation. It helps to put wire mesh in the concrete for reinforcement.
Step #2: Unpacking and sorting.
Break the bands on the pallet(s) with a pair of tin snips. Separate and sort pieces into piles of the same size. Give special care to the 2" thick treads and landing. If dropped they can break. There are three different surface textures referenced in the assembly directions. Figures "1", "2" and "3" show and name each of these textures.
#1 Rocked (Rough surface)
#2 Flamed (Flat textured)
#3 Sawn (Smooth surface)
Step #3: Assembly
Start by laying the first three stringers with a sawn end against the house or lined up with the back of the pad. To find out which stringers to use go to the layout drawings included with these directions. Select the drawing that matches your landing size and count down the number of steps you are using. That line will give you the size(s) of the 6" stringers you need to use for the first step.
After setting the first three stringers, place the riser pieces in front of the stringers. These pieces will always be 15" on one dimension. They will have one rocked face, one flamed face and two sawn faces. Go to page two of the drawings and look up the width of the stairs you have. From that drawing choose which of the 15" wide pieces you need to start with. If you have an even number of rises, you start with the longer of the 15" pieces. If you have an odd number, start with the short 15" pieces. Place each riser piece so that the rocked edge faces front and a flamed edge faces out on each side.
Now place a 2" x 16" tread onto the risers butted up to the back stringers. Make sure the flamed faces are exposed on top, sides and front. We suggest that you put a bead of polyurethane caulk between the rise and the tread. After the tread is placed, fill the voids between the stringers with gravel. You have now completed the first step.
The next steps are the same as the first. Establish which stringers you need and place them onto the stringers of the first step.
But the riser to the stringers so they overlap the first tread by 4". Make sure you choose the opposite 4" x 15" piece that you used on the previous step.
After all the steps are in place the landing is installed. Place the three remaining 4" pieces on top of the last stringer so the sawed backs butt up to the house.
Put the 2" thick landing onto the rises and you are done. If you have any questions about the installation process, please feel free to contact us or give us a call. We are here to help!