These HRC Products are designed to exceed the tensile properties of the reinforcing steel used Read More Quality Assurance Headed Reinforcement Corporation s high performance reinforcement products are consistently specified for use on projects with the most demanding applications such as seismic impact and blast resistant loading conditions Read More
Jan 01 2022 nbsp 0183 32 Most concrete used for construction is a combination of concrete and reinforcement that is called reinforced concrete Reinforcement for concrete is provided by embedding deformed steel bars or welded wire fabric within freshly made concrete at the time of casting The purpose of reinforcement is to provide additional strength for concrete where it is
Adequate anchorage of headed bars is provided by 1 direct contact between the bearing face of the head with longitudinal reinforcement or 2 placing the headed bars inside at least one
05 12 2019 nbsp 0183 32 Headed Bars with Confining Reinforcement y 0 0622x 0 5428 0 0 2 0 4 0 6 0 8 1 1 2 1 4 0 2 4 6 8 10 12 14 T T h Center to center Spacing d b No 5 No 8 No 11 widely spaced Design Approach – Initial Proposal Convert descriptive equations without confining reinforcement hooked bar spacing gt 6d b headed bar spacing gt 8d b to equations for
ACI 318 11 may be used to perform the necessary design calculations on the headed reinforcing bar treating it as an anchor Evaluating the headed rebar to Chapter 17 of ACI 318 14 Appendix D of ACI 318 11 enables the calculation of concrete breakout strength in tension N cb pullout strength in tension N pn and concrete side face blowout strength in tension
Headed Bars offer a fast compact and easy to install alternative to hooks especially on large diameter reinforcement Headed Bars contribute to reducing crane usage and manpower on site Concrete flow is also favourably impacted Rebar preparation can be outsourced or performed ahead of the installation not slowing down your operations For Cut amp Bend
Double headed bars Please note that the heads might be rotated to each other with rebar as rotation axis If the position of the heads is important select one or two circular T heads HRC 150 to control the positions of both heads All products are designed to exceed the actual stress and strain capacity of the rebar Head dimensions for HRC 100 series fulfil the definition for
Jan 22 2022 nbsp 0183 32 Four police officers and a Kakamega bar owner suspected of beating a man to death three years ago will be charged with murder Kakamega Principal Magistrate Eric Malesi delivered the ruling at the end of an inquest into the death of Raymond Mulanda after he was arrested on December 16 2019
Headed Bars are a simple and effective alternative to hooks and long development length A compact disc is mounted onto the reinforcement bar end The assembly of the rebar and the anchor provides a anchorage superior to long straight or bent reinforcement bars while being simpler and faster to install Headed Bars contribute to reducing rebar
Nelson 174 offers a full line of standard in stock fasteners for quick shipment as well as custom designed fasteners to meet your specific needs If you wish to see design specifications special application procedures and part number information for a particular category of fasteners choose from the available selections below
Cast In Place gt gt Light rebar coupler solution based on threaded bar ends prepared with a single machine Headed Bars Cast In Place gt gt Reinforcement anchorage system that acts as an advantageous alternative to hook bars
31 12 2021 nbsp 0183 32 This table was prepared to provide a reference source for headed bar reinforcement systems currently authorized for use by Caltrans Caltrans assumes no liability or responsibility for the accuracy or validity of this information if used by other entities Caltrans contact Structural Materials Testing Lab smtl dot ca gov
HRC 555 headed reinforcing bar is a deformed or plain steel bar with a head attached to one or both ends HRC 555 reduces anchorage length congestion and construction time while providing superior performance A great alternative to standard hooks throughout your concrete structure from pile anchorage to beam column joints Research has shown headed lap splices are very
05 12 2019 nbsp 0183 32 Headed Bars with Confining Reinforcement y 0 0622x 0 5428 0 0 2 0 4 0 6 0 8 1 1 2 1 4 0 2 4 6 8 10 12 14 T T h Center to center Spacing d b No 5 No 8 No 11 widely spaced Design Approach – Initial Proposal Convert descriptive equations without confining reinforcement hooked bar spacing gt 6d b headed bar spacing gt 8d b to equations for
The use of Ancon Reinforcing Bar Couplers can simplify the design and construction of reinforced concrete and reduce the amount of reinforcement required For assistance on the correct choice of coupler please consult the Coupler Selection Chart or alternatively select the appropriate range from the menu
Headed reinforcement steel bars are steel bars for the reinforcement of concrete which are equipped with a device for mechanical anchorage of the bar in the concrete The anchorage device – the head is made of steel and is attached to one or both ends of the rebar Heads can also be integrally formed from the bar The product is defined by the specification of the
reinforcement larger than a 4 bar shall not be field bent without prior hooks as defined by aci 318 unless noted otherwise reinforcing bar hooks indicated on the structural drawings shall be standard strength compressive 28 day minimum range slump cement ratio max water weight maximum 11 12 13 13 aisc 14th edition
Headed Bars are a simple and effective alternative to hooks and long development length A compact disc is mounted onto the reinforcement bar end The assembly of the rebar and the anchor provides a anchorage superior to long straight or bent reinforcement bars while being simpler and faster to install Headed Bars contribute to reducing rebar
HRC 555 headed reinforcing bar is a deformed or plain steel bar with a head attached to one or both ends HRC 555 reduces anchorage length congestion and construction time while providing superior performance A great alternative to standard hooks throughout your concrete structure from pile anchorage to beam column joints
The diameter of the spiral could be changed to ensure that the spacing lies within the specified limits Bundled Bars For isolated situations requiring heavy concentration of reinforcement bundles of standard bar sizes can save space and reduce congestion for placement and compaction of concrete
TENSION DEVELOPMENT LENGTHS FOR HEADED REINFORCING UNCOATED BARS ACI Notes 1 Tabulated values are based on a minimum yield strength of 60 000 psi 420MPa Lengths are in inches 2 Tension development lengths of headed bars are calculated per ACI 318 08 Section 12 6 3 Tabulated values have been rounded up to nearest whole number
This type of splice can either be in three pieces the two bar ends and internally threaded coupler or in two pieces with the coupler integrally forged or pre assembled onto the bar end These systems are also available as weld on couplers transitional couplers positional couplers and headed bars Non Upset Straight Thread Coupler