Halfen-Moment Pte Ltd

www.maxfrank.com

Moment Barbreak Coupler

Moment Barbreak Coupler, the university approved product, is designed to cater for almost every conceivable application for joining of reinforcing bars. The taper thread system provides easy alignment for engagement of the incoming rotating bar and develop full strength when hand tightened.

Moment Rebartec Coupler

MOMENT REBARTEC splicing system, ensures full performance splicing joint with its Upset bar ends. The extended long thread provides swift installation simply by turning the coupler instead of the bar itself.

Moment RT Coupler

Moment RT coupler is designed to withstand a tensile strength of 140% specified characteristic strength of the reinforcement bars, complying with tensile requirements of most international standards. HTD bar which is needed to be joint with MOMENT RT Coupler has to be roll threaded. Roll thread / thread, rolling is a surface of in-feeding reinforcement bar. As the dies roll against the bar surface, bar material is displaced to form the roots of the threads and the displaced material flows radially outward to form the threads' crest.

Moment RT Positioning Coupler

Moment RT Positioning Coupler is designed to withstand a tensile strength of 140% specified characteristic strength of the reinforcement bars, complying with tensile requirements of most international standards. HTD Bar which is needed to be joint with MOMENT RT Positioning Coupler has to be roll threaded. Roll thread / thread, rolling is a cold forming process where rotating hardened steel dies are pressed against the surface of in-feeding reinforcement bar. As the dies roll against the bar surface, bar material is displaced to form the roots of the threads and the displaced materials flows radially outward to form the threads' crest.

Moment Weldable Coupler

Moment weldable coupler is designed for connecting reinforcing bar to structural steel members such as plates, piles, beams, columns, etc. Coupler is normally arc welded to the structural steel in a a fabricating yard. The load conditions at the connection must be considered and determined by the designer along with the design of the weld, the selection of electrode, and other relevant choices to be used, which must be matched to the properties of the plate and tube, and to the site conditions. Normally coupler is arc welded to the structural steel in a fabricating yard.

Moment Bargrip Coupler

The Bargrip splice is an outright solution for connection with in-situ rebars for which otherwise would neither fulfill the requirements of a full lap splice nor allow the use of a threaded coupler joint.

Moment Wedge-lok Coupler

Moment Wedge-lok Coupler, developed thru technology used in Post-tensioning systems worldwide. A simple, efficient, and reliable method of splicing reinforcement bars today without the need of special bar end preparation or threading.

Moment Positioning Coupler

MOMENT Positioning couplers is problem solving coupler, used in situation where neither of the bars to be connected is free to rotate. It available in two versions, details are as follows;

Moment Reverse Lock Coupler

Moment Reverse Lock Coupler, a member of the Moment 'Barbreak' splice family, designed for use in heavily congested structures such as columns, piers, and cantilever spans, long beams, pile cages etc to overcome the formidable task of having to rotate heavy bars.

Moment Terminator

The Moment Terminator assembly is a simple quick solution to eliminate the problems of congestion and placement in heavily reinforced compact concrete structural members in the Designed to ACI – 355 criteria based on Shear Cone Theory.

Moment Barbreak Coupler

Unique Features

Slim and short design.
Overall diameter reduces need for additional concrete cover.
Barbreak Couplers are designed to withstand a breaking load of at least 700 N/mm2.
Works like a continuous bar when installed, no cranking required.
3 ° tapered profile offers easy alignment, achieves full tightness with merely 4-5 turns.
No lock nuts required.
Cross threading prevented.
No special tools for installation.
Inspection of splice made easy with a 14-18" pipe wrench.
Also available Barbreak Reducer Coupler.
Exceeds requirements of most International Codes of Practice i.e. MS 146, BS 8110, ACI 318/318R. AS 3600 (Aust), DIN 1045(Ger), CAN 3-N 287 2/3 (Can), etc.

Moment Barbreak Coupler, the university approved product, is designed to cater for almost every conceivable application for joining of reinforcing bars. The tapered connection profile easy alignment for engagement of the incoming rotating bar and develop full strength when hand tightened.

Moment Barbreak Coupler consists of a High Tensile Carbon Steel Sleeve with identical parallel threads at opposing ends tapering towards the middle.

Bar ends shall be square cut and parallel threaded accordingly for connection. Both couplers and threaded bars are supplied with protective plastic caps.

Moment Barbreak Couplers are usually located in RC structures such as long columns, inclined columns, long beams, cantilevered structures where tensile loadings are greater than for normal situation, etc where bars are free to turn.

METHOD STATEMENT FOR INSTALLATION OF MOMENT BARBREAK COUPLER

Moment Couplers are designe and manufactured to the quality requirement of BS EN ISO 9001 2000 adn comply fully to BS 8100: Part 1: 1997. Couplers are selected at random for testing from every batch of imported raw material. A serial number is assigned to every batch of couplers produced for easy reference to the original mill certificate of the raw materials.
Rebar are cut to length at the steel bar fabrication yard before transferring by crane onto the threading work bench.
Poorly sheared ends shall be cut off by disc cutter pr specially designed shear cutter before inserting to our cold working machine for strengthening on the bar end.
The strengthened end is then clamped to the vice of the automatic threading and the threading head is rotated to engage the rebar by a push button switch. The threads are formed by cutting with the chasers in the machine head and threading will dis-engage automatically once a full thread in completed.
A coupler gauge with cut 'window' and exposed inner threads is used to inspect minimum insertion depth and thread configuration of rebar threads at 50 threads interval.
A coupler capped at one end shall be hand locked onto the thread bar ends and tightened firmly with the help of a 18" pipe wrench.All exposed threaded bar ends shall be protected with plastic caps.

Procedure

Step 1: Cut and remove the plastic cap on the threaded rebar and lower it into the opposing end of the coupler.

Step 2: Rotate till hand–locked. Using a marker, draw a line along the vertical axis of the rebar and coupler to indicate hand lock position.

Step 3: Proceed to tighten the joint with the help of a 18" pipe wrench to firm pressure. Usually half to one turn more from the hand lock position.

Moment Rebartec Coupler

Unique Features

Rebartec couplers are designed to withstand a breaking load of at least 700 N/mm2.
Fast production and installation.
No torque wrench is required for installation.
Also available in transition form to connect bars of different diameters.
Exceeds requirements of most international Codes of Practices i.e. MS 146, BS 8110,ACl318R, AS 3600 (Aust), DIN 1045 (Ger), Can 3-N 287 2/3 (Can), etc.

MOMENT REBARTEC splicing system, ensures full performance splicing joint with its upsetted bar ends. The extended long thread provides swift installation simply by turning the coupler instead of the bar itself.

While lap splicing depend largely on the bond between concrete and steel to transfer load, ”MOMENT REBARTEC COUPLER" with its unique parallel — threaded, assures positive alignment locking connection thus providing load path continuity and structural integrity. The “MOMENT REBARTEC COUPLER” behaves as continuous length reinforcement bar by promoting full strength in tension, compression and stress reversal situations.

Stringent compliance with current concrete design standards such as BS 8110, ACI 318, DIN 1045 etc. The use of “MOMENT REBARTEC COUPLER" eliminates the tedious calculations to determine the proper lap lengths. “MOMENT REBARTEC COUPLER" also reduces potential design errors while eliminating wastage and unnecessary rebar cost.

“MOMENT REBARTEC COUPLER” greatly reduces congestions thus maintaining healthy balanced steel to concrete ratio. This is nearly impossible with Lap splicing because of the additional rebar in the lap zone.

“MOMENT REBARTEC COUPLER" allows the use of larger diameter rebar in smaller column member resulting in a more balanced design. Smaller columns can be designed to increase maximum floor space while reducing overall cost.

In watertight and water retaining structural designs, lap splices inevitably double the number of bars in the lap zone leading to unnecessary congestions and resulting in difficulties of concrete placement, the major causes of “voids" and “Honeycombs”. Water seepages and leakages become a nightmare. “MOMENT REBARTEC COUPLER" reduces rebar congestion as explained earlier and significantly improves on concrete flow and compaction. The potentials of crack, “voids” and “Honeycombs” are eliminated.

INSTALLATION

In a simplest procedure, MOMENT REBARTEC COUPLER develops full strength immediately upon hand Tight.

Procedure

Step 1: Engaged ante extended thread end and forwarded until end of thread.

Step 2: Reverse coupler bar to engage on the other end of the connection / incoming bar until full threaded end is covered.

Step 3:Step 3 Turn incoming bar to ensure both bar ends meet in middle of coupler (end-bearing).

Moment RT Coupler

UNIQUE FEATURES

A member of Moment Barbreak family.
Slim and short design to eliminate congestion posed by lap splice to improve concrete placement & compaction.
Overall diameter reduces need for additional concrete cover.
Designed to withstand a braking load of at least 700 N/mm2 well above the designed strengths of most reinforcement bars.
Works like a continuous bar when installed.
Available in transition form to connect bars of different diameters.
Exceeds requirements of most International Codes of practice i.e. MS 146, BS 8110, ACI 318/318R, AS 3600 (Aust), DIN 1045 (Ger), CAN 3-N 287 2/3 (Can), etc.

Unlike other thread cutting process where 20-40% of the steel material as well as its strength is removed, there is no removal of material in thread rolling process and thus, no reduction of bar strength. In contrary, there is an increase of 5-15% material strength due to the work hardening process. The most outstanding advantage of rolled threads is its ability to withstand higher fatigue strength. Material grains are not cut but realigned. The inherent tensile and fatigue strength under reversed bending stressed are basic to the uninterrupted structure. The burnished rough surface with a roughness below 32 micro, improves resistance to corrosion and reduces abrasion within the thread. Thread profile accuracy also increases when there is minimum abrasion.

Unlike the cut thread system, Moment RT Coupler is able to satisfy fatigue requirement as outlined in the major standards like the BS, ACI, ASTM, DIN etc, for the design of seismic structures, highway bridges, cantilevered structures and other structures subject to high cyclic loadings.

METHOD STATEMENT FOR INSTALLATION OF MOMENT RT COUPLER

Rebar are cut to lengths at the steel fabrication yard before transfer by crane onto the threading work bench.
Poorly sheared ends shall be cut off by disc cutter prior to any threading work.
Rebar ends to threaded shall be engaged to the threading machine head to commence threading. Threading head automatically disengages once a full thread length is completed.
A coupler gauge with cut 'window' and exposed inner threads is used to inspect minimum insertion and thread configuration of rebar threads at 50 threading interval.
A coupler capped at one end shall be hand-locked onto the threaded bar ends. All exposed threaded bar ends shall be protected with plastic caps.

Where MOMENT RT Couplers are installed and tightened so as to achieve a full-spliced connection in its entirety, the procedures and methodology to be strictly adhered shall be as follows.

Rebar threaded and scheduled for installation are transferred by crane to site.
Torque wrenches are used specifically for the purpose of measuring joint tightness.
For the purpose of tightening rebar couplers a 14 inch pipe wrench shall be used by first simulating the tightening process of a preset torque wrench.

PROCEDURE

Bar ends shall be threaded equi-distant to meet at centre of coupler.

Step 1: Turn coupler fully into one end of the threaded bar.

Step 2: Engage incoming bar to opposing end of coupler.

Step 3: Rotate incoming bar using 14” wrench until full tightens.

Moment RT Positioning Coupler

UNIQUE FEATURES

A member of Moment Barbreak Family.
Slim and short design to eliminate congestion posed by lap splice to improve concrete placement & compaction.
Overall diameter reduces need for additional concrete cover.
Designed to withstand a breaking load of at least 700N/mm2 well above the designed stregths of most reinforcement bars.
Works like a continuous bar when installed.
Available in transition form to connect bars of different diameters.
Exceeds requirements of most International Codes of Practice i.e. MS 146, BS 8110, ACI 318/318R, AS 3600 (Aust), DIN 1045 (Ger), CAN 3-N 287 2/3 (Can), etc.

Unlike other thread cutting process where 20-40% of the steel material as well as its strength is removed, there is no removal of material in thread rolling process and thus, no reduction of bar strength. In contrary, there is an increase of 5-15% material strength due to the work hardening process. The most outstanding advantage of rolled threads is its ability to withstand higher fatigue strength. Material gains are not cut but realigned. The inherent tensile and fatigue strength under reversed bending stresses are basic to the uninterrupted structure. The burnished rough surface with a roughness below 32 micro, improves resistance to corrosion and reduces abrasion within the thread. Thread profice accuracy also increases when there is minimum abrasion.

Unlike the cut thread system, Moment RT Positioning Coupler is able to satisfy fatique requirement as outlined in the major standards like the BS, ACI, ASTM, DIN etc, for the design of seismic structures, highway bridges, cantilevered structures and other structures subject to high cyclic loadings.

METHOD STATEMENT FOR INSTALLATION OF MOMENT

Rebar are cut to lengths at the steel fabrication yard before transfer by crane onto the threading work bench.
Poorly sheared ends shall be cut off by disc cutter prior to any threading work.
Rebar ends to be threaded shall be engaged to the threading machine head to commence threading. Threading head automatically disengages once a full thread length is completed.
A coupler gauge with cut 'window' and exposed inner threads is used to inspect minimum insertion and thread configuration of rebar threads at 50 threading interval.
A coupler capped at one end shall be hand-locked onto the threaded bar ends. All exposed threaded bar ends shall be protected with plastic caps.

Where MOMENT RT Positionning Couplers are installed and tightened so as to achieve a full-spliced connection in its entirely, the procedures and methodology to be strictly adhered shall be as follows.

Rebar threaded and scheduled for installation are transferred by crane to site.
Torque wrenches are used specifically for the purpose of measuring joint tightness.
For the purpose of tightening rebar couplers a 14 inch pipe wrench shall be used by first simulating the tightening process of a preset torque wrench.

PROCEDURE

Bar shall be threaded one end per RT Coupler configuration and the opposing end extended fully.

Step 1: The RT Coupler shall be turned into the extended threaded bar and rotated fully.

Step 2: Engage incoming bar to opposing coupler end.

Step 3: Reverse Coupler from extended thread bar end till full engagement is attained. A further clockwise turn of the bar necessary to ensure end bearing. A jam nut is optional for positive locking.

Moment Weldable Coupler

Unique Features

Offers simple and fast solution for connecting reinforcement bar to structural steel elements.
Design based on barbreak coupler with internal taper thread on 1 end and the other end prepared for welding.
Constructed in High Strength Machinery Steel Grade S45C.
For installation purpose, the weld coupler is best install welded at fabricating shops with suitable type of welding electrode to ensure the compatibility of material properties.
Welding works shall be executed by certified welders in accordance to all necessary welding regulations.

Moment Bargrip Coupler

Unique Features

Coupler Sleeve is constructed of High Strength Machinery Steel Grade S20C, designed to withstand a breaking strength of at least 625 N/mm2.
Exceeds requirement of most International Codes of Practice i.e. MS 146, BS 8110, ACI 318/318R, AS 3600 (Aust), DIN 1045 (Ger), JIS G3112 (Jpn), CAN 3-N 287 2/3 (Can), etc.
No special bar ends preparation needed.
Just flat cut bar ends for end bearing.
Most commonly used for connection in columns, beams, piles, etc where 'starters' are overly short.
In R.C. Structural repairs, for connecting replacement bars.

A simple step by step execution of cold forged gripping the coupler sleeve against the HRD Bar by means of a hydraulic press results in a full compression splice and achieves a failure load of a minimum 135% in tension of the specific characteristic strength Fy of G460 (BS 4449) reinforcing bar.

Preparation Steps

Check pressure gauge of hydraulic pump to ensure it is in normal working condition.
Reinforcements bars of required lengths are prepared and supplied by the comtractor.
By means of chalk and ruler, mark outside of sleeve with chalk lines which represent the intended press lines.

Installation Steps

Step 1: Install half section of sleeve on upper rebar on the ground.

Step 2: Pressing the sleeve with a hydraulic press equipped with a set specific dies.

Step 3: Lower open end of pressed sleeve onto the bottom rebar.

Step 4: Complete the splicing process by pressing the sleeve onto the lower rebar. This time the press has to be lifted to do the work.

Moment Wedge-lok Coupler

Unique Features

Simplest, efficient solution yet for connecting reinforcing bars.
Product excellence developed thru technology used in Post-tensioning systems.
Developed full compression and tension when installed, works like a continuous piece of rebar.
No need for special bar end preparation or threading.
No need to rotate bars for installation.
Ideal solution for unthreaded "Stub" bars or "Starter" connections, non-complying with lap requirements.
Exceeds requirements of most International Codes of Practice i.e. MS 146, BS 8110, ACI 318/318R, AS 3600 (Aust), DIN 1045 (Ger), JIS G3112 (Jpn), CAN 3-N 287 2/3 (Can), GB 1499-91 (Chn), NFA 35-020-1 (Fr), etc.
Another Made in Malaysia product.

A three (3) component assembly comprising (i)main housing internally threaded (ii) one pair internal wedges, (iii) one pair lock wedges externally threaded to engage reinforcement bars.

Coupler assembly constructed from High Strength Machinery Steel (Carbon Steel S45) specially modified to withstand a breaking strength not less than 700N/mm2 well above designed strength of most reinforcement bars.

Installation made easy, by inserting properly cut rebar ends into coupler, one at a time, and tightening the lock wedge using a Wrench until full tightness is achieved or verified by the specified torque values.

Recommended for use in column bars, inclined structures as well as lateral structural members and slabs. Standard size range: 16 thru 50mm. Also available in composite Wedge-Lok & Threaded connection.

Simple and Fast Installation Statement

Step 1: Loosen the locking midway stop of the wedge and place the coupler over the rebar.

Step 2: Ensure the rebar reaches of the locking wedge coupler and tighten the locking.

Step 3: Loosen the other end of the locking wedge and ensure the locking wedge coupler reaches the rebar of and tighten it.

Step 4: Complete Installation.

Moment Positioning Coupler

UNIQUE FEATURES

Comprises of three components.
Taper thread connections offers easy alignments and achieves full tightness with merely 4-5 turns.
A member of Moment Barbreak family designed to withstand a breaking load of at least 700 N/mm2
Inspection of splice made easy with torque wrench.
Recommended for use in situations where it is impossible to turn the forward bar to a full connection splice.
Exceeds requirements of most International Codes of Practice
i.e. MS 146, BS 8110, ACI 318/318R, AS 3600 (Aust), DIN 1045 (Ger), CAN 3-N 287 2/3 (Can), etc.

MOMENT Positioning couplers is problem solving coupler, used in situation where neither of the bars to be connected is free to rotate. It available in two versions, details are as follows;

Procedure

Step 1: The main sleeve and rebar are cast in the concrete. The socket and lock nut can then be locked into the main sleeve in order to accept continuation rebat.

Step 2: Position the continuation rebar near the extension stud.

Step 3: Switch the extension stud and jam nut onto the continuation rebar till fully engaged.

Step 4: Using a torque wrench to tighten the jam nut on the continuation rebar and another torque wrench to hold on continuation rebar.

Step5: Turn the jam nut towards the main sleeve.Using a torque wrench to tighten the jam out to the recommended torque value.

Moment Reverse Lock Coupler

Unique Features

A three (3) component product. A member of Moment Barbreak family which is designed to withstand a breaking load of at least 700 N/mm2.
Exceeds requirements of most international codes of practice. i.e. MS 146, BS 8110, ACI 318/318R, AS 3600 (Aust), DIN 1045 (Ger), JIS G3112 (Jpn), CAN 3-N 287 2/3 (Can), etc.

Ideal for connecting and positioning bent bars or anchorages.

Achieves full compression and a failure load in tension of at least 150% the specified characteristic strength Fy of G460 (BS 4449) reinforcement bar.

Method Statement for Installation of Moment Reverse Lock Coupler

Rebar are cut to lengths at thesteel fabrication yard before transferred by crane onto the threading work bench.
Poorly sheared ends shall be cut off by disc cutter prior to any threading work.
Threading head automatically disengages once a full thread length is completed.
A coupler gauge with cut 'window' and exposed inner threads is used to inspect minimum insertion and thread configuration of rebar threads at 50 threading interval.
All exposed threaded bar ends shall be protected with plastic caps.

Where Moment Reverse Lock Couplers are installed and tightened so as to achieve a full-spliced connection in its entirety, the procedures and methodology to be strictly adhered shall be as follows,

Rebar threaded and scheduled for installation are transferred by crane to site.
Torque wrenches are used specifically for the purpose of measuring joint tightness.
For the purpose of tightening rebar couplers an 14 inch pipe wrench shall be used by first simulating the tightening process of a preset torque wrench.

Procedures

Step 1: Set torque wrench to the recommended torque value. TurnPart A & Part B onto both threaded bar till fully tight to the recommended torque value.

Step 2: Lends Part C into the Part A till fully engaged.

Step 3: Turn the big nut into the incoming threaded bend bar till fully tight to the recommended torque value.

Step 4: Position the incoming bend bar with Part B to Part A, using torque wrench rotate the Part C into Part B till completely tight.

Step 5: Complete Installation.

Moment Terminator

Unique Features

Constructed in High Strength Machinery Steel Grade S45C to withstand a breaking strength of at least 700N/mm2.
Utilising the Moment Internationally proven taper thread connection for positive locking.
Compact design provides easy placement, reduces congestion and better concrete consolidation.
Offers design flexibility.
Eliminates hooked bars preparation and placement problems.
Meets requirements of most International Codes of Practice i.e. MS 146, BS S110, ACI 318/318R, AS 3600 (Aust), DIN 1045 (Ger, JIS G#112(Jpn), CAN 3-N 287 2/3

The Moment Terminator assembly is recommended for used at beam to column anchorage and in column at roof connecton as an enlarged coupling secured to the end of a length of reinforcing bar thereby creating an anchorage within the concrete.

Developed full tension and exceeds 135% specified characteristics strength Fy of G460(BS 4449) reinforcement bar.

Stabox® Reinforcement Continuity System

Product Description

When creating a conventional concrete frame construction consisting for example of Walls and slabs, the traditional method of ensuring reinforcement continuity between the two elements requires complicated, time consuming and ultimately expensive site-adapted formwork. Rebar connection systems, sometimes known as continuity strips, provide a fast, elegant and cost effective solution which allows formwork to be quickly erected and the concrete cast. Once the formwork is stripped, the reverse of the continuity strip can be removed, exposing the captive rebar stirrups which are then rebent out to form the starter laps for the next elements.

Because of these benefits, it is now difficult to imagine a modern concrete construction without these connection systems. Among the various types available, the FRANK Stabox® represents the State of the Art.

lts market-proven combination of micro-profiled sheet steel with a dovetail or trapezoidal box shapes ensures a strong anchorage in the concrete, meaning that Stabox® satisfies the highest design requirements tor transverse and longitudinal force transmission in the joint. Further benefits include:

Rebar components are BSt 5OOWR grade — guaranteeing rebendability which means the rebar will not crack and the integrity of the joint is maintained
Stabox® is designed and manufactured to strict specifications, ensuring that the latest design standards for concrete construction are met.
Loadlbearing calculations are available for all models, including transverse and longitudinal force resistance which means that the Stabox® system can be specified across the whole project, simplifying product procurement.
Stabox® achieves the highest ‘interlocked’ category within applicable standards for transverse force transmission (Stabox® T for longitudinal force).
Stabox is available in multiple configurations, with rebar diameters of 8, 10, 12 & 16 mm with or without galvanised casings.

Stabox® Installation and use

Fixing Instructions

Stabox® rebar connection system is ﬁxed in place by either

nailing it to the formwork (timber formwork)
tying it to the reinforcement (sliding formwork)
riveting it to the formwork (metal formwork)

Rebending

Please make sure that only suitable tools are used for rebending (refer to chart):

Lift rebar slightly and bend up to an angle of max. 20° from the case.
Using the FRANK rebending tool, gradually straighten the rebar until it is perpendicular to the case. After each incremental movement, readjust the rebending tool so that it seated as close to the apex of the bend as possible.
The recommended maximum rebent kink dimension according to the DBV data sheet is ≤ds/3.
Do not carry out rebending at temperatures below -5 °C.
Take care not to over straighten the rebar as further bending to correct this may cause microscopic cracks in the bar and weaken the joint.

Rebending tools

Article Number	Ø mm	Colour
STARBW08	8	Yellow
STARBW10	10	Green
STARBW12	12	Red

Opening the rear cover

Once the formwork is stripped, pierce the rear cover close to the edge with a claw hammer and lever it out of the case.

Fixing to curved formwork

The lateral webs may be cut with an angle grinder in order to reduce the longitudinal rigidity of the element. Two to Four cuts will normally be enough depending on the radius to be achieved and the element can then be curved to follow the radius of the formwork.