YJACK

YJACK YJACK Technology – The Premier Bi-Directional Pile Load Test specialist showing a few of our local projects in Malaysia for bored piles and driven piles.

YJACK also has been certified by a few international and local bodies. Specialists in Bi-Directional Testing for all types of piles. We look forward to working with you in your country.

Wishing You a Blessed Eid al-Adha 🌙May this meaningful occasion fill your home with joy, your heart with peace, and your...
27/05/2026

Wishing You a Blessed Eid al-Adha 🌙
May this meaningful occasion fill your home with joy, your heart with peace, and your journey with success.

Every project starts with people moving forward.Happy Labour Day to the team that keeps going.
01/05/2026

Every project starts with people moving forward.
Happy Labour Day to the team that keeps going.

📰 Newspaper Recognition for Engineering Contribution We are truly honoured to be featured in the newspaper for our contr...
01/05/2026

📰 Newspaper Recognition for Engineering Contribution

We are truly honoured to be featured in the newspaper for our contribution and support towards the advancement of Ground Penetrating Radar (GPR) technology within the engineering and construction industry.

This recognition represents more than just a company achievement, it reflects our continuous commitment to technical excellence, innovation, and the development of reliable testing solutions that support safer and higher quality infrastructure projects.

At our company, we believe that industry progress is built through strong technical knowledge, professional integrity, and continuous support towards engineering development. We are proud to play a role in contributing to the growth and advancement of modern testing technologies.

We sincerely thank all of our valued clients, partners, consultants, and industry professionals for their continuous trust and support. This achievement motivates us to continue delivering dependable solutions and maintaining the highest professional standards in the industry.

Link below for the newspaper access:
https://metro.sinchew.com.my/news/20260430/metro/7467484
https://kl.chinapress.com.my/?p=1615626
https://www.orientaldaily.com.my/.../2026/04/30/815161

We look forward to achieving greater milestones together and contributing further to the future of engineering and infrastructure development.

13/04/2026

A new chapter begins for us in Nilai. 🏢✨

Moving into our new office is more than just a change of address, it marks another meaningful milestone in our journey. From where we started to where we stand today, every step has been built on dedication, trust, and the strong support of our team, clients, and partners.

This new space represents growth, progress, and the exciting road ahead. It gives us the environment to think bigger, work smarter, and continue delivering reliable engineering solutions with the same commitment and precision we believe in.

Most importantly, it reminds us how far we’ve come and how much further we’re ready to go.

Here’s to new beginnings, stronger collaborations, and many more milestones ahead. 🚀

🧐 What 40 Strain Gauges Reveal Beneath a 102,000 kN Bi-Directional Load Test 🏗️When conducting high-capacity pile load t...
07/04/2026

🧐 What 40 Strain Gauges Reveal Beneath a 102,000 kN Bi-Directional Load Test 🏗️

When conducting high-capacity pile load testing, movement alone does not tell the full story.

In standard practice, telltales are used as the primary parameter to measure pile displacement, providing direct verification of settlement behaviour under load. Complementing this, strain gauges offer a detailed understanding of how loads are distributed along the pile, capturing internal responses that surface measurements alone cannot reveal.

In this project, a 2100 mm diameter pile with a length of 45 m was subjected to a Bi-Directional Static Load Test reaching 102,000 kN. This test applies loads in both upward and downward directions, providing a more comprehensive assessment of the pile’s behaviour under both compression and tension. To fully capture the pile’s internal response, 40 embedded strain gauges were installed along the shaft.

While telltales confirm overall pile movement, strain gauges allow engineers to observe how load is transferred along the pile length, capturing subtle interactions between shaft resistance and end bearing contribution.

This provides critical insight into:

•⁠ ⁠Load distribution along depth
•⁠ ⁠Shaft resistance versus end bearing contribution
•⁠ ⁠Actual soil–pile interaction behaviour
•⁠ ⁠Verification of design assumptions with real data

Large-diameter piles operate under complex conditions where analytical predictions alone are not sufficient. Bi-Directional Static Load Testing combined with comprehensive instrumentation transforms load testing from a simple verification exercise into a detailed engineering assessment.

With independent engineering oversight by Arup, the testing process ensures that foundation performance is supported by measurable data, delivering greater confidence for design and construction decisions.

Because true foundation performance is not only measured at the surface — it is understood beneath it.

🌙 Salam AidilfitriSemoga Hari Raya ini dipenuhi dengan kegembiraan, kedamaian, dan masa yang bermakna bersama keluarga s...
20/03/2026

🌙 Salam Aidilfitri

Semoga Hari Raya ini dipenuhi dengan kegembiraan, kedamaian, dan masa yang bermakna bersama keluarga serta insan tersayang.

Kami amat menghargai setiap kerjasama dan sokongan yang telah diberikan sepanjang perjalanan ini.

Selamat Hari Raya Aidilfitri, Maaf Zahir dan Batin.

👷‍♀️✨ Celebrating the women who continue to make meaningful contributions across engineering, construction, and infrastr...
08/03/2026

👷‍♀️✨ Celebrating the women who continue to make meaningful contributions across engineering, construction, and infrastructure.

Their expertise, dedication, and leadership help drive progress in every project and every site.

Happy International Women’s Day.

🧐 How much load can a friction pile really carry?A recent Bi-Directional Pile Load Test was carried out for a project in...
06/03/2026

🧐 How much load can a friction pile really carry?

A recent Bi-Directional Pile Load Test was carried out for a project in Central Jakarta, providing valuable insight into the performance of a deep friction pile within the local soil profile.

Project Overview
•⁠ ⁠Pile Diameter: 1200 mm
•⁠ ⁠Pile Length: 44.650 m
•⁠ ⁠Test Load: 5500 kN
•⁠ ⁠Pile Type: Friction Pile

In dense urban environments like Jakarta, deep piles often rely heavily on shaft resistance rather than end bearing. Understanding how load is transferred along the pile shaft is essential for verifying the design assumptions.

By using the Bi-Directional Pile Load Test, engineers can apply the load internally within the pile. This method allows the shaft resistance and base response to be evaluated separately, providing a clearer picture of how the pile behaves under load.

It also allows higher test loads to be achieved without the need for massive external reaction systems — a significant advantage for deep foundation testing in restricted construction sites.

Every soil profile tells a different story, and field testing remains one of the most reliable ways to confirm how a pile truly performs.

Would a conventional static load test have been practical for this pile?

🌙 During this blessed month, we commemorate Nuzul al-Quran - the revelation of the Holy Quran.A moment that reminds us o...
06/03/2026

🌙 During this blessed month, we commemorate Nuzul al-Quran - the revelation of the Holy Quran.

A moment that reminds us of the values of guidance, patience, compassion, and unity.

May this meaningful occasion bring peace and blessings to all who observe.

✨ Warmest Wishes During This Sacred SeasonMay this sacred season bring peace, blessings, and forgiveness to you and your...
18/02/2026

✨ Warmest Wishes During This Sacred Season

May this sacred season bring peace, blessings, and forgiveness to you and your loved ones.
May you be abundantly blessed by Allah’s grace and mercy.

On behalf of our entire team, we wish our clients, partners, and friends continued health, harmony, and success.
May this meaningful time inspire kindness, unity, and renewed purpose in everything we do.

Thank you for your continued trust and support, we look forward to building stronger partnerships together.

🌙 Wishing you a blessed and peaceful season.

Address

20 Jalan PP 11/5, Alam Perdana Industrial Park
Puchong
47130

Telephone

+60162168129

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