Changsha DLADTO Rebar Splice Co., Ltd

We can judgment standard of   rebar joints   with the following regulations: 01 Grade I Joint There are two criteria for judging Grade I Joints: 1) The actual tensile strength of the reinforcing bar connection must be greater than the standard strength of the reinforcing bar material and it should fracture at the reinforcing bar. 2) If the connecting piece does not break the reinforcing bar, the actual tensile strength of the reinforcing bar connection must be greater than 1.1 times the standard tensile strength of the material, reaching at least 594Mpa to be considered qualified. The standard tensile strength value for HRB400 reinforcing bar is 540Mpa. 02 Grade II Joint The criteria for judging Grade II Joints is that as long as the actual tensile strength value of the reinforcing bar connection exceeds the standard tensile strength value of 540Mpa, regardless of where the connecting piece breaks, it can be considered qualified. 03 Grade III Joint The criteria for judging Gra...

Although the advantages of   mechanical splices   are well recognized, a major concern has been their high cost for applications where the codes permit the use of lap splices. But is the perception that mechanical splices cost more than lap splices a reality? By using couplers, contractors can be more cost efficient, able to achieve from 20-50% of cost savings compared to lap splicing. Apart from that, there are many other savings which can be anticipated such as; Reduction no. of joints 6 meters length will be most ideal for joining and this would result in reduction of no. of laps by, Assuming height of building: 100 metres Typical floor height: 3.2 metres No. of laps: 100 / 3.2 = 31 laps No. of coupler joints: 100 / 6 = 16 joints Therefore reduction in no. of laps: [(31-16)/31] x 100% = 48% Minimal wastages of HTDBs Assuming floor height of 3.2m and lap length of 1.275m Length of steel bar per floor is : 3.2m + 1.275m = 4.475m For a 12metres steel bar, two nos of 4.475metre...

  Cost Effectiveness The conventional method of connecting reinforcement bars with lap joints in reinforced concrete need not be always appropriate. Advantages of simplicity and economy in lap splicing is limited to smaller diameter bars, mechanical couplers offer the solution for splicing when large diameter bars are involved like 20，25，32 and 40mm Diameter where huge cost saving can be done. Structural Reliability Coupler spliced perform like continuous reinforcement. That develops full tensile strength mechanically, independent of concrete. Coupler splices are excellent for severe condition like earthquake, typhoon, especially suitable for condition that demands higher ductility of building structure. Designers Friendly Rebar-join coupler reduces rebar congestion and improves concrete flow & consolidation. It offers greater flexibility in design options. The simplicity in detailing of reinforcement, particularly in reinforcement congestion zones minimizes the reinforcement f...

Rebar reducing sleeve   are used to connect steel bars of different diameters. The rebar reducing sleeve models are 18 to 16, 20 to 18, 22 to 20, 22 to 18, 25 to 22, 25 to 20, 25 to 18, 28 to 25, 28 to 22, 32 to 28, 32 to 25 , 36 to 32, 36 to 28, 40 to 36mm, etc. Rebar reducing sleeve can be widely used in reinforced concrete structure engineering in steel bars in various industrial and civil buildings. It is especially suitable for high-rise buildings, roads, bridges, subways, tunnels, power stations, dams and other buildings and structures with high explosion-proof and earthquake-proof requirements. Changsha DLADTO Rebar Splice Co., Ltd  as a division of  ADTO Group . We are a professional rebar coupler producer, we have been in this field for a long time with customers for all over the world. Welcome to contact us for any inquiry.