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- Lay out the two sides and middle piece, aligning them so that the tops are on the same end and the letters align (so aL is near aRand a).
- Make sure that your 2x4s will be facing inward.
- The side marked with Ls will be on the left if you stand at the top of the staircase
- It should look like this:
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- Lay out the stairs, aligning the letters so that they match with the letters on the sides (aL will be right next to aL, while aR will be next to aR). The painted sides of the stairs will face upward; the unpainted sides with letters on them will face downward.
- Attach each stair to the top of its left 2x4 by sinking screws through the stair into the 2x4 (holes have been pre-drilled for you). You may find this easiest to do with at least 1 person to help hold.
- Each step should look like this:
- Attach each stair to the left side piece by sinking screws through the side piece into the stair (holes have been pre-drilled for you). Try not to split the wood.
- Repeat steps 3 and 4 on the right side.
- Align the center piece with the holes along the center of the steps. This should also align with the sharpie lines drawn on the steps, and should result in the arrows on each step pointing directly toward an arrow on the center piece.
- Attach each stair to the center piece by sinking screws through the stair into the center piece. Try not to split the wood.
- To make your staircase stand up, attach legs to its underside, near the 4th or 5th or 6th step. You may want to attach these legs to each other as well. It is easiest to do this while near your platform, so you can get the height and angle right. You’ll probably want a few people to hold up the staircase while another person does the attaching.
- Connect your staircase to a platform by sinking a screw through the side wall of the platform and into the sides of the staircase. This will help stabilize the staircase and keep the top from wobbling side to side
- Don’t forget to add railings to the staircase!