Therefore, proper concrete stairs should be at least 3′ (90 cm) wide, as to be able to install the railings and still have enough space for a person to use it without any issues. After the 21 days, the formwork is removed by using a hammer and a crowbar. Very generally, the word 'stairs' refers to a staircase, whereas the word 'step' refers to the steps that make up the staircase. Usually while constructing a stairs attached to wall, the line of flight , thread and risers are marked on the wall for proper fixing of shuttering or formwork. Don’t forget to share our article with your friends, by using the social media widgets. Surface Finish: As these stairs/steps are mould in high-quality timber or steel, the open surface is troweled to give sleek finish. Thanks. Concrete quantity calculation is the first step of the process of building a concrete staircase. Precast Concrete Construction Procedure. That is, = 25.56 cubic feet. To support the stairs at the top which restricts the movement of stairs is usually done to the roof beam or slab. Even carpet or wood can also be used to finish the stairs. As we have already highlighted, you must vibrate the concrete, otherwise it will crack easily and might even not support your weight. The concrete mix plays an important role in strength and durability of stairs. Fascination with Stairs. consist of a number of steps with landings at suitable intervals to provide comfort and safety for the users. Some common types of stairs are shown in Figure 10.1. The boards must be at least 2” thick, as to support the weight of the concrete. Fig 6: Finishing off stairs with a float. Digging a foundation is…, This article is about how to build an underground pump house. Concrete stairs provide safer access to different floors during construction than ladders or other temporary systems. The form of the concrete stairs should be connected to the ceiling. Dear Sir, I was looking through your post and i saw your stair construction techniques and it is Neat!!!!! With any staircase, it’s important that the design works with the space available rather than take over it. This article is about how to pour a foundation. If you want to fix a contour for a concrete staircase, you should use trimming of boards and nails. From our experience, we recommend you to build a quarter space landing, as it will be easier to use by children and elders. Save my name, email, and website in this browser for the next time I comment. You should be able to notice that the concrete is uniform and even over the whole surface,  and that there are no holes, pockets of air or cracks. Only Hydraulic lime to match the existing fabric rather than cement will be used in the installation of the new staircase so that the new staircase can move Installing precast concrete stairs and landings early in the project, will provide safe passage for construction teams and save costs on supplying temporary access during the construction phase. Liquid concrete is dependent upon many variables including temperature, consistency, mix and builder’s experience. You will receive a link and will create a new password via email. It is recommended to use a concrete vibrator while pouring the concrete to completely fill the gaps of the stairs and to avoid the honeycomb formation. thanks for the piece of knowledge. really helpful. If the stairs are to be used by older people, you should decrease the slope of the stairs (<30º). I would ver much appreciate it. Make sure you pay attention to the dimensions of your interior concrete stairs. The number of steel bars and size of the bars is to be calculated by a structural engineers depending upon the loads coming on the stairs. VIP members get additional benefits. Actually i was researching for a stair just like your with 2 step winder and climbing on lift wall RC Concrete. Become VIP Member, Do you need to remove the ads? Design the staircase by using concrete grade 25 and strength of reinforcement of 500 N/mm2. If the plinth beam of building is present at the start of the stairs, then the reinforcement steels bars can be connected to them which will transfer the loads. Use a spirit level, as to make sure the form is level and plumb, if you want to obtain a neat look. Flexibility – Our precast stairs can be installed within a variety of applications including steel framed structures or tied directly into your concrete floors using projecting reinforcement. In this manner, the stairs will support your weight and will resist for many years in a row. The shields are hammered into the ground and propped up by small wedges. Specify all the different types of materials. Austin Dam Failure: One of the Biggest Disasters in US History, How to Become a Construction Contractor? If no plinth beam is found, then a small concrete foundation or size stone masonry is constructed. Calculate Quantities of Materials for Concrete -Cement, Sand, Aggregates, Types of Foundation for Buildings and their Uses [PDF], Methods of Rainwater Harvesting [PDF]: Components, Transport, and Storage, Quantity of Cement and Sand Calculation in Mortar. This article is about how to build concrete stairs. © 2009-2020 The Constructor. Sign Up to The Constructor to ask questions, answer questions, write articles, and connect with other people. Spiral and curved precast stairs, prefab concrete steps & concrete landings for … Consequently, the tread should be between 9” and 9 1/4” and the riser should be about 7 1/2” – 8 1/4” (minimum 5”). Bolt-Rite Using Stair-Pro frames allows one person to set the formwork for concrete stairs. In this article we explain you the detailed method of how to construct a concrete stairs from start to end. 10) It is important to order the concrete only after you are perfectly sure the form is able to support its weight and the form it is level and plumb. The whole structure of the form, must be supported by 4×4 posts. How To Building Reinforced Concrete Stairs Step By Step. 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. Work with patience, as to make sure the structure of the wooden formwork is rigid and able to sustain the rebars and the concrete. People need to know how much of the needed materials should they buy so the construction would go without problems. If you are not able to level the stairs perfectly, then you will have to pour a thin layer of self-leveling screed, after the stairs have dried out. Remember that the height of the risers and the width of the treads should remain the same along the stairs. Nevertheless, the ideal option would be to buy the concrete already mixed from your local concrete company and to pour it in the formwork with a pomp. The interface between the concrete and the masonry is liable to crack. On the dawn of the revival of concrete in slab structures, building techniques for the temporary structures were derived again from masonry and carpentry.The traditional slab formwork technique consists of supports out of lumber or young tree trunks, that support rows of stringers assembled roughly 3 to 6 feet or 1 to 2 metres apart, depending on thickness of slab. How To Building Reinforced Concrete Stairs Step By Step. Use a spirit level, as to make sure the form is level and plumb, if you want to obtain a neat look. The stairs requires  at least 21 days to dry out completely, so the removal of formwork is to done only after 21days. In addition, as you can easily see in the image, in our case we have built a split landing, as we didn’t have enough space to construct a quarter space landing. Use long screws and nails to lock together the wooden formwork and make sure there are no gaps between the boards. Generally speaking, the foundation is the most important element when building…, This article is about how to build a concrete ceiling. Hybrid concrete construction; Modern methods of construction (MMC) The concrete industry embraces innovation and modern methods of construction (MMC) by offering concrete solutions which can be used to reduce construction time and promote sustainable development, as well as offering cost savings. 03. What is Affordable Concrete House Construction? Our formworkers can make a single staircase or enough staircases for an entire development. Fast-track multi-level construction projects and create safe, immediate access to upper floors, by incorporating precast concrete stairs into your building design. The standard dimensions for stairs components are. Work with patience from the top to the bottom of the stairs, making sure you vibrate the concrete (either with a concrete vibrator or by hitting the formwork with a hammer). Beginning from the top landing, each riser board is … Pouring of concrete into the formworks is started from the below part to above. There are several factors that might influence the quality of the final product in this process, that is, the built structure. Country Therefore, pay attention to optimal dimensions for interior concrete stairs and use solid wooden boards. How to draw a detailed stair plan: 1. Embodied Carbon in Construction: High Time to Reduce it, Passive House: Reduce Energy Consumption in Your Building. We always recommend to our clients to pour the concrete ceiling and stairs in the same day, as to create a strong bond between these components. Maybe the most important step when building concrete stairs is to use a proper formwork. The concrete steps are to be reinforced with steel bars so as it carries the loads coming upon the stairs and transfer them to the ground. Lost your password? If the stairwell is being removed entirely then prop the surrounding floor and break out the … After the completion of construction preparations, the layout of the structure is set. The wooden boards creating the steps, must be fastened with several screws to the lateral structure of the formwork. CONCRETE STAIR DRAWINGS. How to Inspect a Structure Using Acoustic Emission Testing? In addition, the maximum allowed protrusion of the nosing is up to 1.25” / 3.2  cm. We really needed a shelter for the water pump…, This step by step diy woodworking project is about how to frame a metal stud beam. Construction of concrete stairs includes steps such as designing, preparing foundation, building formwork, placement of reinforcement steel bars, concreting, finishing and curing. Concrete Roads: PQC, Methods of Construction and How it is Made! Tremie pipe is a pipe having a diameter around 20 cm and adjustable length with a funnel-shaped hopper at the top end. If the stairs are to be refitted into the existing stairwell then how are the new stairs being put in? We design and construct concrete stairs for both private and commercial Clients. Each of these alternatives is good if it is performed in a professional manner, so you should choose the one which fits your tastes and needs best. In the tremie method, concrete is placed by gravity through a long vertical pipe which is called tremie pipe. This project is part…. The foundation on which the concrete stairs rest is to be properly constructed so that the loads of the stairs are transferred in to ground successfully and to resist the movement of stairs. Calculation Method of Concrete Quantity for a Staircase From constructioncost .co - August 23, 2019 5:48 AM A funnel-shaped hopper is fitted to facilitate pouring of concrete. Similarly when the drainage pipes are laid along with the outer wall then again the connection between the pipe and These steel reinforcement bars are  placed in the formwork with minimum of 25 mm spacing and is tied together. Last but not least, you can see the concrete stairs from a different perspective. Since the thermal expansion of concrete is different from that of masonry. 2. The whole structure of the form, must be supported by 4×4 posts. These are the standard dimensions for concrete stairs, as to satisfy the needs of many categories of persons. 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. Related links. Construction of concrete stairs is a difficult task that requires an engineer to study all the aspects and design it and a skilled labour to construct it. VIP members get additional benefits. Just after you have filled the formwork with concrete, you have to vibrate it thoroughly, as to distribute it evenly and prevent the creation of air pockets. 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. All Rights Reserved. We can construct the following… Small & large steps; Bespoke flights of stairs; Spiral staircases METAL STAIRS CONSTRUCTION TYPES. What are the important points of FIDIC Contract we should keep in mind during tendering? Types of stairs - Designing Buildings Wiki - Share your construction industry knowledge. Construction of concrete stairs is a difficult task that requires an engineer to study all the aspects and design it and a skilled labour to construct it. Modern, versatile, cost-effective & fire-resistant stairs that can accommodate progressive collapse requirements. A proper recipe for the concrete you have to pour in the formwork is the following: mix thoroughly 3 parts cement, 2 parts sand, 4 parts gravel and water. These pavements may or may not be provided with sub-base/base courses, and they may be constructed directly over a well-compacted soil subgrade. 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. 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. Fig 5: Concrete Stairs after formwork removal. concrete staircases. Work with patience and  make sure the wooden form is level and plumb, otherwise the concrete stairs would look misaligned. We can assert that building concrete stairs is complex and there are many aspects which require knowledge and expertise in this field, therefore consult a qualified engineer before putting your life at risk. The unit is released from the crane hook immediately and eased into exact position by adjusting screw-jacks in the frame members. 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. Temporary propping should provide full support for all construction loads. Before building the wooden form for the concrete stairs, we recommend you to get accustomed to the components of a regular star. Work with patience, as to avoid damaging the concrete or the edges of the stairs. Introduction to Concrete Roads: Concrete roads fall under the category of high quality/superior type of roads built with cement concrete. In addition, the concrete stairs are at least 4-5” thick, as we have installed the rebar structure, which will reinforce the concrete. The wooden boards are used to create the steps and are fastened with several screws to the lateral structure of the formwork. 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. 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. In addition, you have to observe the proper dimensions for the stair treads and risers, as to be able to use it easily. Make sure that the 2 x 4 extends all the way to the place where the ground level will be, so you will have the exact measurement, measuring from the bottom part of the 2x4 to the ground level. Work with patience, as to avoid damaging the concrete or the edges of the stairs. In addition, the angle of the stairs is important when building them, as you should take into consideration the end users. The reverse method of construction can be used for demolition.