Question

Steps of making a spiral​

Answer 1

Step-by-step explanation:

*Persian language version of this instructable is available Here. Step 1: Tools and Materials. 4-5 Meter cord: That can be more or less than this length. Step 2: Cut Two Cords. Cut two thread of cord, each one with 2 meter length. Step 3: Fold the Cords. Fold the cords, not from middle! Step 4: Tie the Cords.

Answer 2

Answer:

You multiply by 30 because many of our spiral stair treads are set at a 30 degree angle. Therefore, in order to have a full 360 degree turn (walking on and off the stair in the same direction) your stair will require at least 12 steps: 12 steps x 30 degree angles = 360 degrees of rotation.