How To Create Concrete Stairs?
Construction of concrete stairs includes steps like designing, preparing foundation, building formwork, positioning of reinforcement steel bars, concreting, finishing and curing. Construction of concrete stairs is really a difficult job that requires an engineer to review each of the aspects and design it as well as a skilled labour to develop it.
Steps for Construction of Concrete Stairs
The followings include the steps associated with construction of concrete stairs,
1. Designing of Concrete Stairs
Designing of stairs requires through know-how about design aspects and site study. The standards that influence the style of stairs are height with the floor, width with the stairs, risers depth, thread width, thickness in the stairs, angle with the stairs, load put on the stairs and many other aspects which requires a qualified engineer to development an ideal stairs.
2. Foundation and Support for Concrete Stairs
The foundation which the concrete stairs rest shall be properly constructed so the plenty of the stairs are transferred straight into ground successfully and also to resist the movement of stairs.
If your plinth beam to construct is found at the start of the steps, then your reinforcement steels bars can be linked to them that can transfer the masses. If no plinth beam is found, then the small concrete foundation or size stone masonry is made.
To support the steps towards the top which restricts the movement of stairs is usually completed to the roof beam or slab.
3. Building the Form-work for Concrete Stairs
The main step when building concrete stairs is by using an effective formwork. The angle of flight, measurements of thread and riser are to be properly checked. Usually while setting up a stairs attached with wall, the queue of flight , thread and risers are marked on your wall for correct fixing of shuttering or formwork.
It's must be at the very least 2” thick, about secure the weight in the concrete. The complete structure of the form, should be based on 4?4 posts. The wooden boards are used to build the steps and are fastened with several screws on the lateral structure of the formwork.
Utilize a spirit level, about ensure the form is level and plumb, if you want to get yourself a neat look. Are the concrete stairs needs to be coupled to the ceiling.
These steel reinforcement bars are placed within the formwork with the least 25 mm spacing and it is tied together.
5. Pouring of Concrete for Concrete Stairs
Pouring of concrete into the formworks begins in the below part to above. The concrete mix plays an important role in durability and strength of stairs. Standard mix used for stairs are 3 parts cement, 2 parts sand, 4 parts gravel and water.
It is recommended to work with a concrete vibrator while pouring the concrete absolutely fill the gaps from the stairs and to stay away from the honeycomb formation.
4. Steel Reinforcement for Concrete Stairs
The concrete steps should be reinforced with steel bars in order it carries the loads coming upon the steps and transfer these phones the bottom. The volume of steel bars and height and width of the bars shall be calculated with a structural engineers based upon the hundreds coming on the stairs.
These steel reinforcement bars are placed inside the formwork with minimum of 25 mm spacing and is also tied together.
5. Pouring of Concrete for Concrete Stairs
Pouring of concrete into the formworks commences through the below part to above. The concrete mix plays a vital role in durability and strength of stairs. Standard mix used for stairs are 3 parts cement, 2 parts sand, 4 parts gravel and water.
It is recommended make use of a concrete vibrator while pouring the concrete to fully fill the gaps with the stairs and to prevent the honeycomb formation.
The work shall be finished great care and patience , as any sudden movements can disturb the alignment from the formworks as well as collapse the formwork. It is usually recommended to pour the concrete ceiling and stairs from the quick, concerning develop a strong bond between these ingredients.
6. Elimination of Formwork
The stairs requires at least A 3 week period to dry out completely, so the eliminating formwork would be to done after 21days. Over these Twenty-one days proper curing is to carried out to prevents the cracks in stairs because of thermal expansion.
Following your A 3 week period, the formwork is taken away simply by using a hammer along with a crowbar. Use patience, regarding avoid damaging the concrete or edges of the stairs.
7. Finishing of Concrete Stairs
After the formwork is taken away, the steps can be carried out in different ways as reported by the element the utilization. It can try to be finished using trowel or float to give concrete finish, cement tiles, granite can be installed for better appearance. Even carpet or wood may also be used to complete the steps.
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