Staircase (dog-legged) design and original line plan AutoCAD file(.dwg) & .pdf included

Staircase design and its specification (Dog-legged)

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TYPE OF STAIRCASE

    Many types of staircase used, But here we used the Dog- legged staircase.

SPECIFICATION OF STAIRCASE

• Riser      - 6"
• Tread     - 9"-1'2"
• Landing - 3' depending on the staircase
• Noting   - 1"
• Width     - 3 to 5' depending uses  
• Length   - 9'-14'

Now the above dimension is basics sizes of the staircase. In this case, we are used below dimension that dimensions are

• Riser 6"
• Tread 9"
• Landing 3'
• Width 3'
• Length 14'

The width of the stair you can see in a diagram is 7' on both sides of the stairs. but that not width of the stair is the cap between two stairs is 1'(compromise on landing) so we here represent as the 7'.

 In this case, we used the dog-legged or U-shape staircase we used.
The slope is noted more than 30 degrees to 45 degrees. Raiser value is not more than 6", If you put the raiser to above 6" it may hurt humans knee.

The advantage of the dog-legged staircase

• In this stair, we can use the landing area as the taken  rest on this place
• It's safer than the straight staircase

Note:

You can download above plan in original AutoCAD file and PDF by using the above Dropbox link.