= Waist slab concrete + steps concrete = 18 + 7.56 = 25.56 cubic feet. 10) Finish the stairs with a float, making sure they get a nice finish. It can just be finished using trowel or float to give concrete finish, cement tiles, granite can be installed for better appearance. Please enter your email address. If no plinth beam is found, then a small concrete foundation or size stone masonry is constructed. The stairs need at least 4 weeks to dry out completely, so make sure you remove the forms only after it dries properly. How To Building Reinforced Concrete Stairs Step By Step. CONCRETE STAIR DRAWINGS. Stairs are used to create a pedestrian route between different vertical levels by dividing the height between the levels into manageable steps. As compared to regular wooden stairs, concrete stairs are more durable and rigid, therefore it is a perfect choice if you want less problems for many years in a row. The wooden boards creating the steps, must be fastened with several screws to the lateral structure of the formwork. But, this is a huge mathematical process, showing the dimensions of the stairs and the way theyâre gonna be build. The stairs requires at least 21 days to dry out completely, so the removal of formwork is to done only after 21days. If the stairs are to be used by older people, you should decrease the slope of the stairs (<30º). Liquid concrete is dependent upon many variables including temperature, consistency, mix and builderâs experience. Some common types of stairs are shown in Figure 10.1. What is Affordable Concrete House Construction? To support the stairs at the top which restricts the movement of stairs is usually done to the roof beam or slab. The factors that influence the design of stairs are height of the floor, width of the stairs, risers depth, thread width, thickness of the stairs, angle of the stairs, load applied on the stairs and many other aspects which requires a qualified engineer to design the perfect stairs. Lost your password? Once the formwork is removed, the stairs can be finished in many ways as per the requirement of the use. Become VIP Member, Do you need to remove the ads? We design and construct concrete stairs for both private and commercial Clients. Make sure you pay attention to the dimensions of your interior concrete stairs. The whole structure of the form, must be supported by 4×4 posts. Steel Reinforcement for Concrete Stairs, 5. In addition, you have to observe the proper dimensions for the stair treads and risers, as to be able to use it easily. These are the standard dimensions for concrete stairs, as to satisfy the needs of many categories of persons. Building interior concrete stairs is a complex project, as you have to build a formwork, install a structure of reinforcing bars, pour concrete and finish the stairs with a float. Use long screws and nails to lock together the wooden formwork and make sure there are no gaps between the boards. Therefore you have to decide from the very beginning the dimensions of the treads and risers, taking into account the slope and the run of the stairs. So the total concrete volume for the 1st flight of the staircase is, = Waist slab concrete + steps concrete = 18 + 7.56 = 25.56 cubic feet. This work is to be carried out with great care and patience , as any sudden movements can disturb the alignment of the formworks or even collapse the formwork. As we have 9 numbers of steps in a flight, so the concrete volume for the steps of the first flight is, = 9 x 0.84 = 7.56 cubic feet. After you have built the concrete stairs and completed the rest of your house, you have to finish it, wither by installing tiles, carpet or by laying wooden treads. Digging a foundation is…, This article is about how to build an underground pump house. 3. Use a straight edge to spread the concrete and them use circular moves to give a nice finish, by using a polystyrene float. larger projects) the funnel that came with your cement mixer Sign Up to The Constructor to ask questions, answer questions, write articles, and connect with other people. In this image, you can see that the wooden formwork must be locked together tightly, using different boards and posts. thanks for the piece of knowledge. Dear Sir, I was looking through your post and i saw your stair construction techniques and it is Neat!!!!! You should notice the structure of the formwork and how the concrete has been poured. While pouring the concrete in the form, it will create a great pressure and might move the risers from their position. Foundation and Support for Concrete Stairs, 3. In this lesson, we'll discusses the construction components of a staircase, optional components added to staircase designs, and the different types of staircases. METAL STAIRS CONSTRUCTION TYPES. Stage-by-stage design of a concrete porch The complexity and duration of work largely depend on the design and size of the future porch. Total concrete volume required for construction of above staircase = waist slab concrete volume + Steps concrete volume + Landing concrete volume + Handrail concrete volume. Fig 5: Concrete Stairs after formwork removal. Become VIP Member. What is the difference between Airport, Aerodrome and Airfield. The unit is released from the crane hook immediately and eased into exact position by adjusting screw-jacks in the frame members. 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