KOROK® Seismic Test

KOROK Sets a New Benchmark in Seismic Performance

KOROK® has raised the standard for seismic resilience, proving its durability in the toughest conditions. Recent seismic testing conducted at BRANZ in 2024 confirmed that KOROK panels can withstand high levels of drift, ensuring minimal damage, reduced repair costs, and faster recovery following earthquakes.

These rigorous tests, performed in accordance with FEMA 461 and NZS 1170.5:2004 standards, evaluated KOROK panels under both in-plane and out-of-plane seismic conditions. No other system in New Zealand has undergone such extensive testing across multiple wall configurations.

With their exceptional seismic, fire, and acoustic performance, KOROK panels are the ideal choice for high-importance structures, including hospitals, emergency response centres, and essential utilities. This milestone reaffirms KOROK’s commitment to delivering market-leading solutions that enhance building resilience and safety.

For more details, visit our Seismic Resource page and discover why KOROK is the trusted name in performance-driven wall systems.

KOROK® Seismic Resource

Setting the Benchmark for Seismic Resilience

KOROK® has set a new benchmark in seismic performance, demonstrating exceptional durability under rigorous in-plane and out-of-plane seismic testing. KOROK Panels have the ability to withstand high levels of drift , ensuring minimal damage, reduced repair costs, and faster recovery after earthquakes.

Leading the Market in Seismic Testing

KOROK® has recently undergone comprehensive seismic testing, setting a new benchmark to support our fire and acoustic wall performance. For over 25 years, we have delivered high-performance solutions across the residential, industrial, and commercial markets.

The Purpose Behind Our Testing

To understand and determine the behavior and performance of KOROK wall panels when subjected to seismic design loads occurring between structural slabs within buildings.

To demonstrate how KOROK® panels respond in correlation with drift levels for both in-plane and out-of-plane conditions, and to support the market with tested solutions. By undertaking this seismic testing, KOROK® reinforces its commitment to superior building resilience, helping to minimize damage, lower repair costs, and maintain operational continuity after earthquakes.

Importance of Seismic Resilience

The 2010/2011 Christchurch earthquakes and the more recent 2013 Lower North Island earthquakes illustrated the vulnerability of building non-structural elements (partitions, building services and piping). Widespread damage and loss of business continuity due to the poor performance of non-structural elements was widely observed

The Canterbury Earthquakes Royal Commission identified the need to improve the performance of non-structural elements in earthquakes with one of the recommendations focussed on improving non-structural element performance. “To prevent or limit the amount of secondary damage, engineers and architects should collaborate to minimise the potential distortion applied to non-structural elements. Particular attention must be paid to prevent the failure of non-structural elements blocking egress routes.”

Proven Seismic Performance

Conducted at BRANZ in 2024, our seismic tests followed FEMA 461 and NZS 1170.5:2004 standards, confirming KOROK® panels has the ability to withstand high levels of drift. No other system in New Zealand has undergone such rigorous testing with multiple wall configurations and variations.

Application in High-Importance Structures

As the ultimate All-in-One solution for fire & acoustic-rated wall systems, KOROK® panels offer unmatched performance for high-importance structures. With strong seismic performance and the ability to withstand high drift limits, KOROK® panels are ideal for IL3 and IL4 buildings, such as hospitals, emergency response centres, and essential utilities. KOROK® provides stakeholders, architects, and engineers with confidence in a durable, high-performance solutions.

Test Video of Typical Wall Configuration

In Plane 78mm KOROK® with head track fixing. Vertical panel installation with no apertures.

In-plane loading of 78mm KOROK® with head track fixing. Vertical panel installation with apertures.

Out of plane loading of 78mm KOROK® with head track fixing. Vertical panel installation with apertures.

Panel Handling

KOROK manufactures lightweight wall panels consisting of galvanised or colour steel shells filled with aerated concrete.

Generally, KOROK products are delivered to your building or other site on long trailers and articulated trucks.

Our products are packed with reasonable protection against damage during delivery, however care must be exercised during unloading.

Forklift, Hiab or crane unload is required.

GUIDELINES

Ensure packs are lifted slowly, avoiding jerking where possible.

Forklift unloading – 150mm between pack and mast.

Ensure soft slings are neatly running on the inside of the two most inner timber collars of the pack.

Ensure soft slings are running continuously from the hooks to underneath the pack and back up to the hook.

Do not loop the sling around itself with only one end connected to the hook. This may damage the panels when lifted.

Ensure you lift only one or two packs at a time.

PACK SIZES

The panels are packed in timber pallets, measuring 1200mm wide by 300mm high.

There will be 2, 4 or 6 timber pallets for each pack (depending on length), nominally spaced 1200mm apart, middled from pack centre.

Packs can be stacked up to 6 packs high and must be placed side by side or end on end, on the truck / trailer tray.

When stacking back-to-back, timber collars must butt up against each other.

The length of the pack will vary according to the length of the panel required by the customer, commonly between 2.0 and 7.0 metres in length (can be up to 9.0m).

COMMON PACK WEIGHTS

Standard 3 metre pack = 390 – 470kg (nominal); Standard 6 metre pack = 780 – 936kg (nominal).

STRAPPING DOWN PACKS

Loads must be strapped down and secured by appropriate means. Load strops are most highly recommended, allowing 12 to 16 strops for a full semi load, more for B-Train transport.

Packs are to always be strapped over timber collars. No belly straps done with plastic angles at any time.

When stacking higher than 4 packs, a second set of straps must be placed after the third pack over timber collars only, before adding further packs.

ACCESSORIES

At times, a bundle of steel C-track or Angle strips may be placed on top of the load. These may measure up to 6.0 metres in length and weigh from 10kg to 500kg depending on the quantity.

IN TRANSIT

Where possible, avoid sudden braking and jolts during transit to reduce impacts on the product.

Re-tension strops every two hours at a minimum.

UNLOADING

Forklift, Hiab or crane unload is required.

Use soft slings or forks only, no chains to be used on product.

All lifting to only be done under middle crate, closest to the bearers to take the weight.

Forklift unloading – 150mm between pack and mast.

Care must be taken on unload and storage of product, avoiding bumps and scratching.

Guidelines must be carefully followed (turn over page).

Deflection Head Details

What Are Deflection Head Details?

Deflection head details are specialized components used in wall and partition systems to accommodate vertical or horizontal movement in a building’s structure.

They are typically placed at the top of walls, allowing the structure to expand, contract, or shift without compromising the wall’s integrity or performance.\

This movement can be caused by various factors, such as dead loads, live loads, thermal expansion, or seismic activity. At KOROK Building Systems, our deflection head solutions are designed to provide the flexibility and stability needed in high-performance wall systems.

Dead and live loads can cause significant deflection in some structures. KOROK® can provide deflection C-track details where deflection loadings are considered.

KOROK deflection head details:

• Maintain Structural Integrity: Designed to allow movement in walls without damaging the structure, these details help prevent cracking or separation in response to building movement.
• Ensure Fire and Acoustic Performance: KOROK deflection heads are rigorously tested to retain fire resistance and acoustic ratings, even with movement, maintaining protection in all conditions.
• Seismic Readiness: In New Zealand, where seismic activity can impact building structures, our deflection head designs are engineered to absorb and adjust to seismic forces, supporting safe and resilient structures.

Whether used in commercial or residential projects, KOROK’s deflection head details meet the highest industry standards, offering a reliable solution for builders, architects, and contractors who prioritize safety, performance, and durability.

Technical Resources

High-Performance Fire Sealants for KOROK® Wall Systems

The KOROK® Acrylic Fire Seal and KOROK® MS Fire Seal are high-performance fire-resistant sealants engineered to enhance building safety in KOROK wall systems. Both products offer up to four hours of certified fire resistance, making them ideal for fire-rated joint applications in settings like intertenancy walls, lift cores, riser ducts, and stairwells.

KOROK® MS Fire Sealant

Introducing the KOROK MS Fire Seal, a single-component, hybrid sealant engineered to deliver high-performance fire resistance in building projects. Ideal for integration with KOROK wall systems, this innovative product provides a lasting, elastic seal that effectively withstands fire, UV, and environmental stresses without compromising on quality or safety.

Key Features and Benefits

KOROK MS Fire Seal stands out for its durability and advanced formulation. Here’s why it’s the go-to choice for reliable, fire-resistant joint sealing:

• High Elasticity and Movement Capability: With a movement tolerance of ±25%, KOROK MS Fire Seal offers high flexibility, making it adaptable to various structural shifts and expansions without cracking.
• Safe and Environmentally Friendly: Free from isocyanates, solvents, and silicones, it’s engineered for safety and designed to prevent the release of halogenated by-products during fire exposure.
• Fast Curing with Minimal Shrinkage: KOROK MS Fire Seal cures quickly with nearly no shrinkage, ensuring consistent, secure joints that won’t deteriorate over time.
• Non-Corrosive with Excellent Adhesion: Whether applied to metal, wood, concrete, or other materials, the sealant forms a strong, lasting bond that won’t corrode or weaken with age.
• Outstanding UV and Weather Resistance: Its robust formula stands up to UV light, moisture, and fluctuating temperatures, keeping joints resilient and intact, even in harsh conditions.
• Easy to Apply in Various Temperatures: With a user-friendly application in both warm and cool conditions, KOROK MS Fire Seal simplifies installation without compromising quality.
• 4-Hour Fire Rating: Tested and certified according to EN1366-4 and EN1366-3, KOROK MS Fire Seal offers up to 4 hours of fire resistance, ensuring critical protection in fire-rated assemblies.

KOROK® Acrylic Fire Seal

The KOROK® Acrylic Fire Seal is a high-quality, water-based acrylic sealant designed to enhance fire safety and acoustic efficiency across a variety of building projects. Engineered for fire-rated joint applications, this sealant delivers excellent performance while providing easy, water-based cleanup, making it an ideal choice for both new builds and retrofit applications.

Features & Benefits

1. Fire Resistance: The KOROK® Acrylic Fire Seal offers fire resistance for up to four hours, helping to protect buildings from fire spread. This performance is certified according to the AS1530.4:2014 standard, a critical safety benchmark for the construction industry.
2. Acoustic Performance: In addition to fire safety, the KOROK® Acrylic Fire Seal contains acoustic properties that effectively reduce sound transmission. This dual-purpose functionality is especially beneficial in high-density living spaces, such as apartment complexes, where both fire and noise control are priorities.
3. Ease of Application and Cleanup: As a water-based acrylic product, the KOROK® Acrylic Fire Seal is simple to apply and clean, providing a practical solution for contractors working with KOROK® systems.

Tested & Certified

The KOROK® Acrylic Fire Seal has been rigorously tested to ensure compliance with AS1530.4:2014, meeting industry standards for fire performance and safety. Additionally, this product is low in volatile organic compounds (VOC), making it a safer and more environmentally friendly option.

Applications

The KOROK® Acrylic Fire Seal is approved for use with KOROK® wall and partition systems, complementing their fire and acoustic protection. It is ideal for joint applications where fire and sound insulation are essential, such as:

• Intertenancy walls
• Lift cores
• Riser ducts
• Stairwell enclosures

EARN CPD POINTS WITH KOROK

NZIA Approved CPD Provider

Expand your expertise and earn CPD points with our informative presentations tailored for architects. Discover the latest innovations and products from KOROK, one of New Zealand’s leading brands in fire and acoustic rated wall systems.

Our sessions, accredited by Te Kāhui Whaihanga New Zealand Institute of Architects, offer 10 CPD points for every hour attended.

We understand the demands of your schedule, so we’re bringing the knowledge directly to your office. Contact us today to arrange a free CPD presentation at your convenience, and take the next step in your professional development. We look forward to supporting your journey.

Introducing COLORSTEEL® MAXAM™: The Next Generation of Steel Solutions

At KOROK, we are committed to delivering the highest quality fire and acoustic rated wall systems, and today we are excited to introduce a major upgrade in our materials. We are transitioning to the new COLORSTEEL® MAXAM™, which will replace our previously used COLORSTEEL® ENDURA® and COLORSTEEL® MAXX® ranges. This change marks a significant advancement in the technology and performance of our wall systems.

What is COLORSTEEL® MAXAM™?

COLORSTEEL® MAXAM™ combines the renowned quality and consistency of COLORSTEEL® with innovative ACTIVATE™ technology. This new single substrate product solution is designed with corrosion resistance and longevity in mind, making it suitable for most of New Zealand’s environmental conditions.

The Benefits of ACTIVATE™ Technology

• Strategic Positioning: The aluminium/zinc/magnesium compounds in the coating are strategically positioned to activate at the start of weathering, providing sacrificial protection when it is most needed.
• Robust Barrier Formation: Magnesium compounds encourage the formation of a robust barrier at cuts and scratches, slowing the rate of subsequent corrosion.
• Long-Lasting Protection: The magnesium compounds ‘activate’ the metal coating, resulting in more effective, longer-lasting sacrificial protection.

Transitioning to the Future

The introduction of COLORSTEEL® MAXAM™ reflects our commitment to innovation and excellence. By integrating this advanced material into our KOROK wall systems, we are ensuring that our products not only meet but exceed the highest standards of performance and durability. For more information on COLORSTEEL® MAXAM™ and its benefits, please contact our customer service team.

Recent Articles

Technical Bulletin July 2024

KOROK has a culture of investing in product testing across our core market segments, believing in developing systems that simplify construction with robust, evidence-based performance.

As our market evolves, so does the demand for high-performance, compliant systems. KOROK continually strives to stay ahead, providing evidence-based solutions, supporting documentation, technical support, and literature to the New Zealand Construction Industry.

Our technical team, led by David Cornelius, brings a wealth of experience and a deep passion for the KOROK brand. We balance product innovation, testing, and technical support, ensuring that the industry benefits from practical, test-based solutions.

Pathway to testing:

KOROK collaborates with leading institutions such as BRANZ,  Auckland University Acoustics Testing Services, CSIRO, and Warringtonfire Australia, alongside industry-leading fire and structural engineers, manufacturers, and consultants. This collaboration aims to deliver performance-based solutions that meet ever-evolving design requirements.

The testing process begins by identifying industry challenges, followed by setting objectives and the steps required to facilitate a solution. KOROK evaluates both suitability and compliance requirements while considering simple installation methodologies. A systematic evaluation of needs leads to a well-structured test program and assessments.

David and his team rigorously assess and refine processes, aiming to provide the market with simple, high-performance systems and applications that enhance both functionality and efficiency. Our goal is to ensure that every product meets the highest standards of performance and reliability.

Recent Articles

Introducing KOROK 360: Support for Your Project from Specification Through to Installation

Taking “Support” In the New Zealand Construction Industry to the Next Level

In the ever-changing and challenging world of construction, it’s crucial to have the right kind of backup to tackle any project head-on. That’s where we step in with something pretty special – KOROK 360. It’s our latest effort to provide top-notch support from start to finish on your construction projects.

What KOROK 360 Is All About

KOROK 360 is all about shaking things up a bit in the New Zealand construction industry. We think it’s time to give you a hand with a bit of everything – from getting your project off the ground to crossing the finish line. Our goal is to set a new standard for support, making sure we’re there for our new and longstanding clients.

Support and Innovation

First of its kind in New Zealand’s firewall and acoustic wall systems industry, KOROK 360 covers all bases. We’re here to make sure every part of your project runs smoothly, blending excellent support with our know-how to make your job easier.

All the Support You Need, When You Need It

• Expert Tech Support: Benefit from our technical experts for guidance, compliance and troubleshooting, ensuring your project keeps moving without difficulty. Contact Tech Support
• Dedicated Sales & Specification Support: Our sales support team is at your disposal, ready to help you in the office, on-site, run training sessions, presentations and more. Contact Sales & Spec Support
• Made to Measure: Just like a tailor-made suit, we’ll make sure our products fit your project perfectly. Contact Support
• National Logistics Service: No matter where you are in New Zealand, we’ll get our products to you right on time, so your project stays on track. Contact Logistic Support
• Installation & Training Support: Our on-ground support during the installation. Ensures compliance with standards and maximises the performance of our firewall and acoustic wall systems. Contact Installation Support
• Estimation & Pricing Support: Leverage our detailed quantity surveying expertise to ensure your project’s resources are optimized, preventing waste and ensuring cost-effectiveness throughout the lifecycle of your project. Contact Support
• EPD & Sustainability: Commitment to sustainability and transparency by providing EPDs, highlighting the environmental impact of our products and supporting green building practices. Contact Support.

New Chapter

KOROK 360 embodies our commitment to innovation, providing the comprehensive support you need. Welcome to KOROK 360, where your project’s needs are met with precision, expertise, and solid support.

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