IMBMS Coupler System

IMBMS Coupler System is used for overcoming steel congestion and reducing steel wastage as lap and hook bars are replaced by Couplers, Terminators & Threaded Inserts.

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Overcome Steel Congestion

Overcome Steel Reinforcing Congestion

• Allows greater flexibility for designer/engineers

• Reduce steel wastage as lap and hook bars replaced by couplers and terminators

• Superior cyclic performance compared to lap joint as coupler performs as a continuous bar

• Use of couplers significantly saves time thus reducing labour cost for fixing and installation

• IMBMS couplers knuckle design for easy use with any gripping tool

• Improves concrete flow in critical zones

• Parallel rolled thread means only five turns for faster fixing

• Can roll thread G300E and G500E deformed and plain from 12mm to 40mm

• Locally tested and compliant to NZS 3101 clause 8.7.5.2 and meets seismic and slip requirements of ISO 15835:2009

• Meets the requirements of NZTA 3rd Edition Bridges Manual (SP/M/022)

Threading

The Cold forming method is essentially simple - the shape of the end of the rebar to be threaded, is modified via a round accurately predetermined sized steel die set.

The forming load is minimal and applied transversely to the grain flow of the material, this in effect aligns the grain flow of the ribs and the core diameter.

The core diameter and ribs are formed to an accurate circular shape suitable to thread roll.

For a standard thread suitable for the 32mm Type A rebar coupler this takes approximately 10 seconds.

Testimonials

"There is not much to say about the Ironman Couplers except that it's one, if not the best system I've used in reinforcing steel.

It leaves all other coupler, crimping methods for dead, it allows you to not only prefab 99% of beams but also the volume and tonnage that is being placed in half the time."

BSFNZ-Fixer

Look, the BMS coupler was by far a great system. It allowed huge volumes of prefabbing which obviously gives you reduced labour bills, as opposed to the insitu work.

We found that the couplers were a great alternative, once you remove the potential laps out of the equation as well.

A great alternative than what was originally proposed to be honest. I know we will definitely use the BMS coupler again.

Ryman Healthcare

We have adopted to use your coupler system at our Ryman Petone site and we are very pleased with the product.

The structure is a Base Isolated building which utilized custom made 1200mm wide shell beams over the isolators.

The moment demand on these beams is significant and required a very heavy content of reinforcing which resulted in congestion, numerous laps and very difficult detailing.

The use of the couplers made all these aspects far easier resulting in a very elegant solution.

We have decided to use the same system on the remaining buildings on site to be constructed in the future.

MV Engineers - Auckland

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IMBMS Coupler System

IMBMS Catalogue

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IMBMS Coupler System

IMBMS Threaded Insert Brochure

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High Tensile Strength Bar IMBMS Coupler

The couplers are designed to provide high tensile strength connections with external ribs or spanner flats, for easy gripping by hand tools; such as spanner, pipe wrench and chain wrench etc.

IMBMS Bar Coupler ( Normal Temperature Swaged Bar)

• No heat applied, no upsetting, no thread cutting • Through normal-temperature swaging, original stress-resistance in tension and compression force is ensured • Concrete placement is easy thanks to the small diameter and short length of the coupler • Couplers are available for dissimilar sizes on request.

TYPICAL TEST RESULTS-BS 8100 Hot Rolled Bars BS.4449
NOMINAL BAR SIZE	YIELD STRESS (N/mm2)	ULTIMATE STRESS	PERMANENT ELONGATION (0.6fy) mm	FAILURE MODE
40	537	628	0.0721	BAR BREAK
32	526	638	0.0518	BAR BREAK
28	533	653	0.0480	BAR BREAK
25	540	638	0.0014	BAR BREAK
20	505	618	0.0021	BAR BREAK
16	507	621	0.0048	BAR BREAK
12	521	638	0.0040	BAR BREAK

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