How to design a stair for a exsisting site

It is a challenging thing that the actual site and drawings doesnt match.. so lets see the steps i follow in order to get a stair case right on spot to go to top floor.

first took the measurements of tge opening on the top floor.. length and width. Measured with a measuring tape on site ans drew on picture so that later when i go to office ill know what im doing.

too the slab thickness and floor height from top to top.. so that its easy to find no of steps required. 

Than took a pic from below floor so that i can visualize when i go back to office.

above is the desing whihc came best for the place, did some autocad drawing and this whats it looks like, than next is fabrication time at workshop

by using 100x50mm square hollow section made the main frame and steps with 50x50mm angle pcs.. step is 50mm thick solid wood.

 installed.. looks good   now its time to screw the wood steps and your all set to go uptge stairs.

time to deisng mezaarine to ground level as well

First we took a bench mark of 1m from the out side finishing level.. than marked it on the wall below the mezzanine floor. From that didba scale design.

fabricated it in our workshop.

How to prepare concrete staircase form work or shuttering work

The stair case which has 6 steps before landing, width of the stair case 850mm, step height 176mm, steps 200mm.  stair case step one start after floor height of 150mm

Drawing of sample stair case

leveling step one of form work

side view of staircase shuttering work

stair case bottom support of shuttering/form work

The most important thing to take note while preparing form work is that; 

1. The ply wood is secure and timber is enough to support concrete weight and vibration while pouring, so the last pic shows the bracing given to support the concrete. the pics were taken few hours before completing the whole form-work.

2. Making sure the first step is level, using a sprite level, so that it ensures the fact that next steps will be leveled. 

3. Take accurate measurements from the last end of the step one to the grid line, and top end of the step to the grid line, in this sample it measure 820mm at bottom and top against the grid line.

4. for easy construction of form work, use 2inch x 1.5inch straight timbers, and nail or screw them together. 

concrete poured to stair case form work and left for curing

setting up cantilever beam for landing