You could find pdf format articles in the field of steel rebar coupler long and exhausting. But here we are considering this topic for short and almost complete for your commercial decision. Some of the features of rebar coupler like length and dimensions are about to being discussed. Rebar couplers are components that link two reinforcing bars in the longitudinal direction, establishing a mechanical splice. They do this by running along the length of the bars. This is an alternative to connections that are made using lap splices or welding. In order to prevent protruding bars in casting joints, lessen congestion in limited locations, and shorten the length of rebar, mechanical splices are frequently utilized. Different technologies are used during the production of rebar couplers, as well as during their attachment to the rebar, and as a result, these couplers have various properties, including their tensile capacity, their robustness under real site conditions, the ease with which they can be assembled, and their ability to control the correct installation. When deciding which option is best for your project, it is essential to take these factors into consideration. HRC rebar couplers The HRC400 rebar couplers are capable of meeting the most stringent requirements. The HRC-coupler produces a mechanical joint that is considerably more robust than the rebar joint. Excellent performance!
HRC400 series: There occurs a transfer of the rebar's complete strength and strain, which results in the rebar developing its full ductility (the result is like an un-spliced bar) increases the designer's degree of adaptability (all couplers can be placed in the same section) The user-friendliness of the design is matched with the excellent structural performance of HRC400. This is significant because proper installation is vital to the end product, which is the mechanical splice. In addition to meeting the technical prerequisites of the aforementioned European certification schemes and standards, the HRC400 Series also satisfies the prerequisites of additional such standards. Examples are: BS 8597 (UK) "DIBt: Grundsatze für Zulassungs- and Überwachungsprüfungen von mechanischen Betonstahlverbindungen" (Germany) "Boverkets handbok om betongkonstruktioner - BBK" is published by Kiwa under the numbers BRL 0504 in the Netherlands, NF A35-020 in France, and BY4B in Finland (Sweden). Existing certificates and test results can be used as direct evidence to demonstrate that all applicable requirements have been satisfied. The coupler is NOT restricting the capacity of the connection, regardless of the actual rebar strength; the ultimate tensile stress is greater than 700 MPa. Tensile tests regularly result in the parent rebar breaking, which indicates that the coupler is NOT limiting the capacity of the connection. In addition to the conventional criteria, such as seismic and fatigue performance, slip and tensile strength, and fatigue performance, the HRC400 Series Rebar couplers have been successfully tested at temperatures as low as -40 degrees Celsius.
Rebar coupler
Rebar coupler is a product as it is obvious by the name couples and joints two end of rebars together. In RCC structures, rebar couplers are utilized in place of the lapping and welding in reinforcement system. The lapping system, in which the bars are tied by wire next to each other over, is used when lengthy length bars are required or when adding extra bars to the ends of existing bars. Similar to lapping, welding is a method where the bars are joined by welding rather of being strung together with wire. Rebar couplers, also known as couplers in reinforcement, are an alternative system utilized because welding and lapping systems waste bar. They give an end-to-end connection for the continuous reinforcing of a structure. The coupler in reinforcement is employed because it is affordable and efficient, as opposed to the lapping method, which wastes portion of the bar during lapping. The rebar coupler is particularly cost-effective for large diameter bars in large building projects, including skyscraper development. Mechanical splices is another name for the rebar standard couplers. The rebar coupler is utilized in various types of construction, including the building of towers, bridges, dams, and buildings. Rebar Coupler Types In reinforcement, there are primarily 2 types of rebar couplers, including Roll-threaded Rebar Coupler with Threads Coupler for Cold Forged Rebar Coupler for Non-Threaded Rebar Coupler for Rebar Crimping Rebar Coupler MBT
The coupler in a roll thread rebar coupler is threaded by a threading machine. The ends of the TMT bars are threaded in the Roll Thread Machine to fit the bar in the roll thread coupler for reinforcement. The TMT bar is then installed with rebar couplers at both ends using nuts and bolts for continuous reinforcement. The Cold Forged Rebar Coupler is threaded by the threading machine, same like the Roll Thread Rebar Coupler. However, the TMT bar's end is forged by a forging machine using hydraulic pressure in this coupler's reinforcement. When a TMT bar is forged, the end of the bar loses just a little amount of length but gains thickness. After the forging process, the end of the bar is threaded by a machine and then attached to a rebar coupler. The use of cold forged rebar couplers has been approved for use in significant infrastructure projects as well as other government projects. After the crimping rebar coupler, which is generally regarded as the first coupler used in building reinforcement, the threaded rebar coupler was eventually developed and put into use. When crimping a coupler for rebar, there is no provision for a thread. Following the installation of a rebar coupler that does not have a thread at each end of the TMT bar, the coupler is crimped using a machine designed specifically for this purpose. Because of the necessity of additional material and effort, the crimping coupler is not a cost-effective option. Once installed, a crimping coupler in reinforcement cannot be removed without damaging the connection. Because of these factors, the crimping rebar coupler technology has not been successful on the market front.
Rebar coupler length
The length of the rebar coupler is dependent on the weight of to rebars that are going to be joint. In reinforced concrete structures, rebar couplers or mechanical splices are used to replace typical rebar lap joints. This is done by connecting two rebar pieces together. The usage of the rebar coupler is also appropriate for application in reinforced concrete walls and columns. A rebar coupler is a section of rebar that has been modified at its right end to include a thread and a coupler sleeve. This modification is seen while looking in the direction of installation. Rebar couplers are an option for replacing individual sections of rebar that pass through the formwork in building joints. In the construction business, rebar couplers are sometimes referred to as mechanical splices. Their purpose is to link the lengths of two reinforcing bars together. Different kinds of rebar couplers and mechanical splices can be used on carbon rebar. Splices that use solely compression as their mechanism/End bearing splices Mechanical joints that incorporate both tension and compression The use of tension only splices or mechanical lap splices Splices made out of dowel bars mechanically Threading Types for Rebar Couplers Type A Threading for Rebar Couplers (Standard Splice) Simple connection achieved by rotating the bar until the entire thread is engaged; type A threading eliminates the risk of thread mismatching and eliminates the possibility of cross-threading (standard splice). The rebars are to be rotated counterclockwise from the joint. 
Threading of the Type B Type (Position Splice) Even in the case where none of the bars can be rotated. The coupler has been screwed onto the connecting bar's enlarged thread and secured in place. The assembly is finished when the end of the bar is butted up against the other end, and the coupler is screwed back onto the first bar until it is fully engaged. The previously mentioned pitch has been evaluated, and it satisfies the requirements for acceptance given in codes AC133, ACI 318, ACI 439, and IS 1786. Things That You Should Think About Before Buying a Rebar Coupler Before you go out and buy the best rebar coupler, you need to give some thought to the following vital aspects that a rebar coupler should have: The Standard of the Rebar Coupler When shopping for a rebar coupler, the product's quality is the aspect you ought to prioritize giving the most weight to. You are well aware, given your expertise in the construction industry, of the significance of product quality to the efficient completion of your work. As a result, you should make it a priority to acquire rebar couplers of the greatest possible quality. Better Tension Strength You need to be certain that the rebar coupler you are going to use is capable of efficiently managing a greater tension strength before you can utilize it. Acquiring knowledge of the capacity to successfully manage the capacity of your project and allowing you to increase the integrity and continuity of your structure are both important. Longevity as well as dependability You need to get the rebar coupler that is the best overall, as this will allow your construction to be supported more efficiently and for a longer period of time. Because these are the most important and greatest components of your construction structure, you should under no circumstances make concessions regarding their dependability and longevity. Price If you are interested in buying the rebar couplers that are both the best and the most effective, you should seek for ones that are sold in the market at rates that are comparable to those of other similar products. This is due to the fact that paying a higher price for certain construction components might easily result in higher overall construction costs. 
Rebar coupler dimensions
The dimensions of the rebar coupler do depend on the steel rebars’ sizes and dimensions that are going to be joint together. Rebar couplers have numerous benefits, some of which are listed below: Continuity of Rebar The details, quality of the materials, and workmanship must be such that the passage of forces from one rebar to the next is guaranteed, according to reinforced concrete design norms of practice. However, the rebar splice may fail if the link between the concrete and the rebar is lost due to concrete cracking, degradation, subpar on-site craftsmanship, rebar corrosion, and subsequent spalling, etc. Rebar couplers produce more dependable rebar continuity since they do not rely on concrete bonds. Keeping Transverse Splitting Forces at Bay Rebar couplers were frequently advocated as an alternative to lapping in structural concrete standards of practice, especially for high rebar diameters where splitting and dowel action forces can be severe. Large diameter bars generally shouldn't be lapped, according to Euro code 2. Sections with a minimum size of 1 m or when the stress does not exceed 80% of the design ultimate strength, splitting forces are higher, and dowel action is greater with the use of big diameter bars are examples of exceptions. Rebar Congestion Reduction 
Lapping rebar in heavily reinforced sections can create a lot of congestion, which can make it difficult to secure the steel and leave insufficient room for the concrete to be placed and compacted properly. Rebar coupler use will significantly lessen congestion, making concrete placing and compaction easier, decreasing the risk of concrete segregation owing to excessive vibration, and improving the quality of concrete. Construction site safety is of the utmost importance. Rebar coupler use can increase site safety by doing the following: Using couplers pressed up against the shuttering or formwork, unsafe rebar that protrudes through the shuttering can be removed. This enables the connecting of the next rebar once the shuttering or formwork is removed. Rebar couplers can be used to attach pre-assembled cages together, eliminating the need for on-site welding of rebar. Effortless Construction Rebar couplers' safety benefits do not come at the expense of a construction project's capacity to be built; in fact, using rebar couplers can make building on- or off-site safer, quicker, and easier. On-site welding of rebar is unnecessary thanks to the simple on-site connection of prefabricated rebar cages. It is possible to link individual concrete pieces and construction joints without drilling through the shuttering. Couplers enable the face of concrete pieces to remain smooth throughout construction, facilitating quicker and easier construction. Reduced Use of Steel Rebar coupler use minimizes the need for mild steel, making it a more sustainable and environmentally friendly alternative to lapping. The length of the lap is equal to the steel saved.