DIY Network

Move It Outside, Pt. 5: Spiral Staircase, WEB-EXTRA Information Additional instructional information from The Iron Shop on the spiral staircase installation. From "Move It Outside" episode DMIO-105

Following is supplementary information providing further instructional detail for the installation of the spiral staircase, as shown in episode 105 of Move It Outside. This information comes directly from The Iron Shop, the supplier for the spiral staircase kit we installed in this project.

advertisement

Spiral Staircase Installation — Supplementary Information

1. Measure out where the corners of the staircase will be and plumb down from the corners of the opening where the landing will be located and mark the floor. Trace a circle on the ground where the base plate will go.

2. Locate the center of the circle and connect this point to the corner plumb marks. Center the base flange over these lines.

3. After determining where the hole locations will be, use a masonry bit to drill 3/8" pilot holes into the concrete. And insert plastic or fiber plugs into the holes. (If the floor is wood, simply drill 3/16" pilot holes)

4. Secure the base flange with 5/16" x 1-1/2" lag bolts using a 1/2" wrench.

5. Stand the center pole up and slide the bottom over the internal sleeve of the base flange.

6. Slide each riser down from the top of the pole and let them rest at the base, stacking them one on top of another. Alternate the risers from side to side so that half are on one side of the pole and half are on the other side, to balance the center pole.

7. Next add the upper deck or top landing and set it into the designated corner of the well opening. After the landing is level in both directions, secure the outer edges of the landing by bolting it with two 2" x 1/4" lags through the holes closest to the edge.

8. Then secure the landing with four 2" x 5/16" bolts. Check for level and tighten the set screws in the landing, starting with the top two set screws. If the stair mounts against a balcony, use the four lag screws on that side.

9. To determine the rise measurement, first measure the full length of the pole from the floor to the upper landing. Then divide the distance by the amount of steps. That determines where each riser will be installed.

10. Now the spindles are installed through the risers. Three spindles are added to each riser. Attach the spindles with the hex bolt and lock nut using an Allen wrench. Starting from the landing on the side you will walk down. Make sure the adjustable angle top on the spindle is facing up the staircase.

11. Tighten the hex head bolt, nut and washer, checking to make sure that the spindle is plumb in both directions.

12. Next raise the last riser lowered down the center pole to correspond with the previously determined height for the first riser. Position the riser so that the back nosing touches the front of the spindle. Recheck the riser height from the top of the landing to the top of the riser, making sure the riser is level. Tighten the screws. Bolt the lower hole of the spindle to the riser, rechecking for plumb.

13. Measure down from the top of the spindle to the nose of the riser to determine the height of the spindle above the nosing. Make sure to maintain this height for all the spindles throughout the assembly procedure. Repeat with all the risers.

14. To determine the height of the bottom spindle take the measurement you where using for the height of the spindle above the risers and add to it the height from the nosing of the bottom riser to the floor. Then take this measurement and subtract 3/8" and mark that distance on the spindle from the top down. Cut off the lower excess with a hacksaw and clean out the inside of the tubing with a square file. Insert the floor flange by tapping it in with a hammer. Bolt this spindle to the bottom riser and secure it to the floor using two 1 1/2" x 5/16" lag bolts.

Page  1 | 2 | 3 | 4