Glostrext Technology
Group of Companies .since 1992. Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Welcome to Glostrext Technology Group of Companies
We offer trusted measurements, large quantity wireless-sensors-based reliable automated data, specialist testing, monitoring works and creative automation solutions in various engineering industries.
Our Services and Solutions:
Pile Load Test and Bi-Directional Static Geotechnical Glostrext Load Testing Instrumentation Instrumentation (BDSLT) and Engineering Survey
Wireless Sensors Automation and Accredited and Online IoT Solutions Calibration Structural Health Services Monitoring
Glostrext Technology HQ @ Subang 2, Damansara West
Vision Objective Core Values
To obtain the hallmark for trusted To provide innovative technologies and Trustworthiness on data provided specialist builders, technical excellence, trusted data empowering our clients to Respect team work spirit innovative services and creative solutions. make decision based on facts. Fairness via facts based decisions Caring via structured sharing & training
Glostrext Technology Sdn. Bhd. (649873-V) Glostrext Technology (S) Pte Ltd (200905332R) Spectest Sdn. Bhd. (236932-K) 30 Kaki Bukit Road 3, #01-02 & #06-09 Empire Techno No. 11A, Jalan Apollo U5/194, Seksyen U5, Bandar Centre, Singapore 417819. Pinggiran Subang, 40150 Shah Alam, Selangor, Malaysia. +65-6846 9808, +65-8299 5577 +603-7832 2012 +603-7832 3646 +65-6846 9800 [email protected], [email protected] [email protected]
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Glostrext Technology
Group of Companies .since 1992. Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Pile Load Test and Glostrext Instrumentation
We provide a complete range of high-quality pile tests instrumentation services since 1992. Over the years, the Group has emerged as the trusted specialist builder in planning, supervision and conducting field instrumentation, wireless sensors and remote online data monitoring systems, automatic pile test monitoring, analysis and reporting works for pile load tests, with emphasis on Glostrext Instrumentation Techniques for driven and jacked-in spun piles, R.C. piles, steel pipe piles, cast-in-place bored piles, barrettes and micropiles in Malaysia, Singapore and Asia region. Our innovative Glostrext Instrumentation Method, where each and every sensor can be individually calibrated for reliable instrumentation scheme, has been widely accepted and used in more than six hundred (600) projects for the instrumented static load tests on driven, jacked-in and bored cast-in-place piles worldwide for the past 10 years.
Reaction anchors system with H-piles as reaction Rebar for whole building as Tension micropile Kentledge blocks reaction ‘monster block’, 1993 system, 1994 reaction system, 1995 test, 1996 system, 1997
Kentledge vs reaction anchors Reaction piles system, KLCC Jimah tension test, 2005 Penang 2X Glostrext system TSP test, Bunker system side by side, 1999 Convention Centre, 2002 for spun pile, 2007 Island JB, 2008
Scale R2 Scale T2 Vibrating Wire Load Cell 1 & 2 Scale T1 Scale R1
Jacked-in spun pile with ICT at Marina South, 2010 Glostrext, Terengganu, 2008
LVDT S3
* at the back of jack LVDT S2 1000 TONS ENERPAC JACK LVDT S4 LVDT S1
On Site Automatic data logging system VW Extensometer housed in Extensometer pressure manifold maintains 51mm i.d. steel pipes the anchors pressure during monitoring period.
5000t Kentledge MLT, Record breaking 8,000t MLT VW Strain Gauges installed to main Bottom anchor for VW Extensometer Extensometer assembly with VW sensor Platinum Park, 2010 (by Sunway) at KLCC Pkg 2, reinforcement bar. 2013 Typical pile instrumentation & monitoring Setup (conventional & Glostrext)
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Glostrext Technology
Group of Companies .since 1992. Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Bi-Directional Static Load Testing (BDSLT) We provide high-quality BDSLT services for carrying out static load tests on bored piles as an alternative option to using kentledge blocks setup or reaction pile system for the piling industry needs, including incorporate our innovative Glostrext Instrumentation Method in BDSLT. Bi-Directional Static Load Testing was conducted by applying hydraulic pressure to the pre- installed hydraulic jacks in piles using an air-driven hydraulic pump, creating an upward force to test resistance of pile upper element (upper shaft friction) and an equal, but downward force to test resistance of pile lower element (combined lower shaft friction and end bearing). Key advantages of the BDSLT method include: (i) Significant advantage in Safety and Space implications. Kentledge setup involve work at height, heavy lifting work, working during night and high risk activities. For BDSLT, it’s low “footprint” and “low headroom” requirement for testing. BDSLT installation activities is already part of the steel cage fabrication and lowering of cage process, hence BDSLT is low risk, safe and flexible (over water, confined space, etc.); (ii) Considerable Time and Cost savings, especially for very high loading tests. Approximately 3 to 6 weeks needed for Kentledge tests including setup and unloading but BDSLT can be deployed in fast speed; (iii) Equivalent MLT top loaded settlement curve can be constructed from BDSLT results. (Ref: CP4:2003, Pg. 196-197, ASTM D8169-18 Bidirectional Test Guidelines and TR63-2018-SSC Technical Reference on Bi-Directional Static Axial Load Test).
Figure A: Instrumentation levels for Test Pile BP16 (2200mm Ø) near BH BP16 Pile length = 39.38 m from Existing GL of RL +39.55 m and 32.055 m from cut-off level of RL +32.225 Hydraulic hoses
SPT value, N (blows/30cm)
0 100 200 300 0.0m EGL RL +39.55 m 0
1 Instruments Level No. 14 2 3 18 class B, 2.5" GI/steel pipe with VWSG A 4 67mm to 70mm i.d. fully B4 4 accessible for housing VW C4 38 extensometer and sensors 5 D4 6 41 E4 6.20m depth, Anchored Lev. A-0 7 F4 7.325m 35 TT1 7.325 COL RL +32.225 m Total= 24 8
9 44 Sonic Logging Pipe 6 9.45 m VWSG Lev A GSG A1, A2 9.45m 10 150 TT1 2 11 TT2 2 12 188 12.7m Anchored Lev. A-1 TT3 2 13 TT4 2 214 14 Total= 8
15 250
16 300 17 18 300
19 GSG B1, B2 19.2m 214 19.2 m VWSG Lev B 20 21 300 22 50 23
24 250 25 300 25.7m Anchored Lev. A-2 26 GSG C1, C2 26.2m 26.2 m VWSG Lev C 26.7m Anchored Lev. A-3
Depth below original ground levelDepthground original below (m) 27 300 TT2
27.88 m BD Jacks 28 TT3 300 28.7m Anchored Lev. A-4 29 Shale, RQD = 13% 29.2 m VWSG Lev D GSG D1, D2 29.2m 30 29.7m Anchored Lev. A-5 31 Shale, RQD = 0% 32 Shale, RQD = 0% 33 GSG E1, E2 33.95m 34 Shale, RQD = 0% 33.95 m VWSG Lev E 35 Shale, RQD = 0% 36 37 Shale, RQD = 0% 38 Shale, RQD = 0% 38.2m Anchored Lev. A-6 38.7 m VWSG Lev F 39 GSG F1, F2 38.7m TT4 39.2m Anchored Lev. A-7 40 Shale, RQD = 0% 41 Pile toe at 39.38 m depth Shale, RQD = 0% 42 43 LEGEND: 44 Vibrating Wire Strain Gauge 45 (VWSG, 4 no. Geokon VSM-4000 at each level) 46 Tell-tale Extensometer 47 (TT, 2 no. at each level) 48 denotes Glostrext anchored level (2 sets per level) 49 Bi-directional hydraulic jacks & bearing plates assembly (3.1), 50 denotes VW Glostrext Sensors (2 sets per level) lowering of steel cage (3.2) & test & monitoring setup at site (3.3) SI Borehole : BH-BP16 Page 3-8 Glostrext 2020 Rev. 1.0
Glostrext Technology
Group of Companies .since 1992. Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Geotechnical Instrumentation and Engineering Survey
Spectest Sdn Bhd was formed in 1992, founded by our managing director, Ir. Dr. Lee Sieng Kai. Over the years, we have grown to provide a complete range of high-quality geotechnical instrumentation services with emphasize on large quantity wireless- sensors-based reliable automated data via online remote monitoring, suitable for monitoring of Deep Excavations & Foundation Piles, Hillside Development, Slope Engineering & Landslides, Building Settlements, Dams, Tunnels, Environmental, Vibration and Noise etc... Trusted measurement data providers in Geotechnical Instrumentation since 1992: Throughout the years, the company has built up a solid track record and experiences on satisfactorily completion of more than 300 high quality geotechnical instrumentation and monitoring projects for both public and private sectors, from among major deep excavation monitoring works for Petronas Twin Towers (1993), Berjaya Times Square (2003), hillside development monitoring for Theme Park Hotel, Genting Highland (1993), Pumping Station Diaphragm Wall and Cold Water Intake Structure monitoring for Manjung Power Station (2000), deep excavation, structural and environmental effect of construction monitoring for Lot 171 Development, KLCC (2007, Lot 348 KL Sentral (2009)) to the latest web-based continuous monitoring displayed via online web visualization services for large quantity wireless-sensors-based reliable automated data like smart ground anchors monitoring at MET 5 (2020). The company has since emerged as the leading geotechnical instrumentation and monitoring specialists for planning, supervision and conducting field geotechnical instrumentation, with emphasize on large quantity wireless-sensors-based reliable continuous automated data via online remote monitoring in the region. Latest advancement in Internet of Things (IoT) solutions, wireless sensors and equipment, monitoring techniques and analysis software and many others instrumentation and monitoring tools has been successfully adopted and installed by Spectest Sdn Bhd since 1992, both during the construction phase or after the structures had been put into service. Our trusted services and technologies greatly assist the Engineers and Clients to optimize and improve their design and project performance, resulting in significant cost saving besides maintaining safe engineering practice. The latest instruments and techniques are adopted by the Company in the measurement works to ensure the best quality service to the Clients.
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Glostrext Technology
Group of Companies .since 1992. Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Wireless Sensors and Online Structural Health Monitoring System We provide a complete range of high-quality low cost online Structural Health Monitoring System via advanced wireless- sensors-based remote monitoring coupled with communication through the internet, or Internet of Things (IoT) solutions for both under construction and completed structures.
Note : Our international technologies partners include Worldsensing (Barcelona) and Geokon Incorporated (USA) and others
Key advantages include: (i) It allows remote monitoring with minimal human intervention once the system is installed and commissioned, hence minimize human error in readings; (ii) It allows remote access of data, anywhere with internet access and anytime, be it in emergency, movement locked down time or just hard-to-access infrastructures; (iii) Continuous large quantity reliable automated data gives complete picture of structure behavior for engineers to make informed decisions; (iv) Cost saving through advancement of IoT technology and easy maintenance; (v) Reduce risk and made operations safer; (vi) Enable structural health of buildings/infrastructures to be checked by any party interested including public at large.
Building structural health monitoring system for Glostrext Technology HQ @ Subang 2, Damansara West
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Glostrext Technology
Group of Companies .since 1992. ` Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Automation and IoT Solutions We provide practical Internet of Things (IoT) solutions for the engineering industries, using advanced sensor technology and automated data acquisition systems, data capturing and visualization software, to enable small, modest to mega projects to post monitoring data and analysis display to the web in an economic and cost effective manner. Our DataCentre web monitoring services utilizes professional data analysis software to store logged data, display and publish it to the Web.
Advanced wireless-sensors-based remote monitoring and data visualisation with IoT solutions Note : Our international technologies partners include Worldsensing (Barcelona), Geokon Incorporated (USA) and others
EL Beam Monitoring
MET 5 Ground Anchors Monitoring
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Glostrext Technology
Group of Companies .since 1992. \ Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Accredited Calibration Services
Our aim has always been to provide trusted measurements and monitoring data of highest quality, innovative and cost effective solutions to our clients. Besides having in-house specialized advanced calibration centre for sensors of inclinometer probes, in place inclinometers, tiltmeters, linear variable displacement transducers, extensometer transducers, load cells and others, we maintain strong collaboration with international technologies partners and suppliers on the best practice of quality control and calibration procedure of the equipment and sensors. Our dimensional laboratory is accredited to MS ISO/IEC 17025 by SAMM, Standards Malaysia. Unlike other systems, for our innovative Glostrext Instrumentation Method, in fact each and every sensor can be individually calibrated to ensure reliable measurement in pile instrumentation scheme.
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Glostrext Technology
Group of Companies .since 1992. ` Glostrext Instrumentation Method : A novel technology empowering You to make decisions based on Facts Sharing via Structured Training and Research & Development We appreciate our talented and passionate people in the Group, encourage teamwork spirit and knowledge sharing to realize their potential and career advancement via structured internal training, courses offered by our international technologies partners, besides actively participating in and continued contribution of publications in regional and international conferences from time to time. Besides in-house specialized high technology services and IoT solutions, we maintain strong collaboration with Universities and our international technologies partners including Geokon Inc. (USA), Worldsensing (Barcelona) and VDV (Iceland) and others.
The up-scale research and development of innovative GLOSTREXT pile testing technology by our founder, Ir. Dr. Lee Sieng Kai, in collaboration with University of Malaya, was awarded with numerous national awards, including Gold Medal in the 6th Malaysia Technology Expo (MTE 2007, 29-31 March 2007, Putra World Trade Centre, Kuala Lumpur), Gold Medal in the International Exposition of Research and Invention of Institution of Higher Learning (Pecipta 2007) held in conjunction with World Innovation Forum at Kuala Lumpur Convention Centre, co-organized by the Ministry of Science, Technology and Innovation Malaysia and USM. Internationally, the GLOSTREXT innovation has also successfully won Gold Medal in the British Invention Show (BIS 2007) held from 17th to 20th October 2007, London.
GLOSTREXT TECHNOLOGY SDN BHD
No. 90, Jalan Sentral 28, Taman Nusa Sentral, (649873-V) 79100 Nusajaya, Johor, Malaysia. Tel : +6012-282 1528 / +6012-322 1162 JB Branch Web : www.glostrext.com
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