Usually steps will be 6″ to 7″ height. Normally For 30 * 40 site staircase size will be around 5 feet OR 6 feet.
The more space you have for steps is more comfortness you will get.
Steps will be constructed in two or three different ways
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Below Picture shows the base for Steps. At the place of steps landing mason will dig one to two feet depth and they will pour concrete.
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While constructing staircase stairs side edges should be upper than steps. So that water flow will not come outside of steps. This will be useful mainly during rainy seasons.
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If you are constructing staircase steps with cement, thread marks should be applied to each stair which will give good grip
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If you are covering steps with kadapa stones ask layer to draw lines on edges
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While selecting clay tiles select the ones which has grip
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You should ask mason to keep staircase water borders, this will avoid water coming below stair case.
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Lighting
Plan your lighting such a way so that it is visible in both of the stairs.
If you look at the below picture light ket in landing place so that if you switch-on the light you can see the stairs in both directions. I do see most of the people neglect this but this is extremely useful
Stair case designs:
By using different clay color tiles you can design a pattern which will give good look for staircase.
In below picture 2′ red tile was kept in between and 6 inch black tile.