How to Build Stairs

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By eHow Contributing Writer

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Build Stairs

The following instructions will help you build stairs for a new project or to replace an old set.

Difficulty: Moderately Challenging

Instructions

Step 1

Make sure you obtain all permits required and follow building codes for your area.
Step 2

Make a cross section sketch of the existing staircase. Note the vertical distance between the first and last step, and each floor level.
Step 3

Measure the depth of the tread (the part you step on), and double check for accuracy.
Step 4

Place a cardboard rectangle against one side stringer with a 14-inch edge resting on one of the middle stair treads, and slide it back so that a 10-inch edge just touches the stair tread nosing above.
Step 5

Place a straightedge on the stair tread nosings, and slide it up against the piece of cardboard.
Step 6

Trace the line on the underside of the straightedge. The result should be a triangle whose sloping leg connects one stair tread nosing with the one below.
Step 7

Demolish the old staircase, salvaging the side beams or stringers. Cutting these pieces is the hardest part of the job, so you will want to have a template.
Step 8

Use the old stringers to draw the lines you need on your new lumber, then place your new stingers in position, tacking it to keep it upright.
Step 9

Use your cardboard template to mark the location of each tread along your stringers.
Step 10

Use brackets or other stair-settings to attach the treads, and finish as desired.

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