Global Testing and Research Laboratory

14/09/2026

Scan the QR Code to associate with us and Connect with Global Testing & Research Laboratory

For quick and convenient access to Global Testing & Research Laboratory, simply scan the QR code using your mobile phone. Through this QR code, you can easily connect with us and explore our testing, inspection, and laboratory services.

Global Testing & Research Laboratory (GTRL), Patna is committed to providing reliable, accurate, and professional third-party material testing services in the fields of:

Mechanical Testing
Chemical Testing
Non-Destructive Testing (NDT)
Construction Material Testing
Soil & Geotechnical Testing
Environmental & Water Testing
Research & Technical Testing Services

Your quality assurance begins with the right testing partner.
Scan the QR code today and Connect with GTRL – Quality, Accuracy & Confidence in Every Test.

“Scan the Code. Connect with GTRL. Test with Confidence.”

12/09/2026

Quantities of raft foundation components are calculated from the approved structural drawings and BBS. RCC concrete is calculated as L × B × T, PCC/blinding as L × B × t, and edge shuttering as 2(L + B) × T. Reinforcement steel should be calculated strictly from the Bar Bending Schedule (BBS). Excavation, waterproofing, binding wire, chairs/supports, and other items should be considered as per project drawings and specifications.

Note: Raft thickness, reinforcement, and other structural details must be based on the structural and geotechnical design, not on thumb rules.

12/09/2026

Engineering Key words

12/09/2026

Amazing detailing notes

⚙️ *6200 SERIES BEARING: Quick Size Guide* ⚙️

*What is 6200 Series:*
*Type:* Deep groove ball bearing, single row
*Features:* High precision, long life, industrial grade

*Popular Sizes:*
*6200:* ID 10 mm, OD 30 mm, Width 9 mm
*6202:* ID 15 mm, OD 35 mm, Width 11 mm
*6204:* ID 20 mm, OD 47 mm, Width 14 mm
*6205:* ID 25 mm, OD 52 mm, Width 15 mm
*6208:* ID 40 mm, OD 80 mm, Width 18 mm
*6210:* ID 50 mm, OD 90 mm, Width 20 mm

*Key Dimensions:*
*ID:* Inner Diameter = shaft size
*OD:* Outer Diameter = housing bore size
*Width:* Thickness of bearing

*Rule:* Last two digits × 5 = ID for bearings 04 and above. Example: 6205 → 05 × 5 = 25 mm ID. Always check OD + Width for housing fit.

*Save for maintenance, machine shop + design engineers.*

⚙️📏

11/09/2026

UPV & REBOUND HAMMER TEST
Non-Destructive Assessment of Concrete

Assess Your Concrete Without Damaging the Structure!

The Ultrasonic Pulse Velocity (UPV) and Rebound Hammer Tests are widely used Non-Destructive Testing (NDT) methods to assess the quality, uniformity, surface hardness, and internal continuity of concrete.

🔹 UPV Test

Helps assess:

Internal quality & continuity
Concrete uniformity
Possible cracks, voids & honeycombing
Areas requiring further investigation
🔹 Rebound Hammer Test

Helps assess:

Surface hardness
Relative concrete uniformity
Variations in concrete quality
Areas requiring further assessment
🏗️ Suitable For

Buildings • Bridges • Columns • Beams • Slabs • Foundations • Industrial Structures • Infrastructure Projects

✅ Why NDT Testing?

Non-Destructive • Minimal Damage • Quick Assessment • Reliable Technical Evaluation

Using UPV + Rebound Hammer together can provide a more comprehensive assessment of concrete condition. Where appropriate, results may support strength estimation through suitable established correlations.

🏢 GLOBAL TESTING AND RESEARCH LABORATORY (GTRL), PATNA

Professional | Reliable | Technical NDT Services

📞 Call / WhatsApp: 9798697785

For UPV, Rebound Hammer & Other Concrete Testing Requirements, Contact GTRL Today

11/09/2026

Timber / Wood Testing Services – GTRL
1. Moisture Content Test of Timber
Ensuring Quality Through Accurate Moisture Content Testing

Moisture content is one of the most important properties affecting the strength, durability, dimensional stability, and service life of timber and wood products.

Global Testing and Research Laboratory (GTRL), Patna, provides reliable Moisture Content Testing services to determine the percentage of moisture present in wood.

Excessive moisture can lead to shrinkage, swelling, fungal growth, decay, and structural deterioration. Accurate moisture assessment helps manufacturers, engineers, contractors, and users ensure that timber is suitable for its intended application.

Applications:
Construction timber and structural wood
Furniture and plywood manufacturing
Doors, windows, and wooden products
Flooring and interior applications
Quality control of raw and finished wood materials

Trust GTRL for Accurate Timber Testing – Quality Wood for Stronger Structures.

2. Density Test of Timber / Wood
Measuring the Strength Potential of Wood Through Density Testing

Density is a fundamental physical property of timber that influences its strength, stiffness, durability, and overall performance.

Global Testing and Research Laboratory (GTRL) conducts Density Testing of Timber and Wood Products to determine the mass per unit volume of wood.

The test provides valuable information for material classification, quality control, structural applications, and comparison of different wood species.

Applications:
Structural timber assessment
Furniture and wood product manufacturing
Species identification and classification
Quality assurance of construction materials
Research and development of wood products

GTRL – Measuring Wood Quality with Precision, Building Confidence Through Testing.

3. Modulus of Rupture (MOR) Test of Timber
Evaluating the Bending Strength of Timber

The Modulus of Rupture (MOR) test determines the maximum bending strength of timber before failure.

Global Testing and Research Laboratory (GTRL) provides reliable MOR Testing services to evaluate the load-bearing capacity and structural performance of wood materials.

This test is essential for understanding how timber behaves under bending forces and helps ensure that wood products meet the required strength and performance criteria.

Key Benefits:
Determines maximum bending strength
Assesses structural performance of timber
Supports material grading and classification
Helps in quality control and product development
Ensures suitability for engineering applications
Applications:
Structural beams and timber members
Furniture and wooden components
Construction-grade wood
Engineered wood products
Research and manufacturing industries

Strong Timber Starts with Reliable Testing – Trust GTRL for Accurate MOR Testing.

4. Modulus of Elasticity (MOE) Test of Timber
Measuring the Stiffness and Performance of Wood

Modulus of Elasticity (MOE) is an important mechanical property used to determine the stiffness and deformation characteristics of timber.

Global Testing and Research Laboratory (GTRL) conducts MOE Testing to evaluate how timber responds to applied loads and its ability to resist bending and deformation.

Accurate MOE testing helps engineers and manufacturers select appropriate wood materials for structural and non-structural applications.

Key Benefits:
Determines stiffness of timber
Evaluates deformation under load
Supports structural design and material selection
Assists in grading and classification of wood
Improves quality assurance of timber products
Applications:
Wooden beams and structural members
Furniture manufacturing
Construction timber
Engineered wood products
Infrastructure and building projects

Precision Testing for Better Wood Performance – GTRL, Your Trusted Timber Testing Partner.

5. Compression Strength Test of Timber
Understanding the Load-Bearing Capacity of Wood

Compression Strength Testing determines the ability of timber to withstand compressive forces without failure.

GTRL conducts reliable compression testing of wood to assess its performance under vertical and axial loads.

This test is essential for evaluating timber used in structural columns, supports, and other load-bearing applications.

Applications: Construction timber, wooden columns, structural supports, furniture components, and engineered wood products.

GTRL – Testing Strength Today for Safer Structures Tomorrow.

6. Tensile Strength Test of Timber
Measuring the Resistance of Wood Against Pulling Forces

Tensile Strength Testing evaluates the ability of timber to resist forces acting in tension.

GTRL provides accurate tensile testing services for wood and timber products, supporting material selection, product development, and structural quality assessment.

Reliable Testing. Accurate Results. Stronger Timber Applications.

7. Shear Strength Test of Timber
Assessing Resistance Against Shearing Forces

Shear Strength Testing determines the ability of timber to resist sliding or shearing forces acting within the material.

This test is important for evaluating the performance of timber joints, structural members, and wooden components used in construction and manufacturing.

GTRL – Ensuring Every Timber Component Meets Performance Expectations.

8. Hardness Test of Timber
Evaluating the Surface Resistance and Durability of Wood

Hardness Testing measures the resistance of timber against indentation, wear, and surface damage.

GTRL offers Timber Hardness Testing services for assessing the suitability of wood used in flooring, furniture, doors, panels, and other applications requiring durable surfaces.

Quality Wood Deserves Quality Testing – Choose GTRL.

9. Nail Withdrawal / Screw Withdrawal Test of Timber
Ensuring Reliable Fastening Performance in Wood

Withdrawal Testing evaluates the resistance of timber against the extraction of nails, screws, and other fasteners.

This test helps determine the holding capacity and performance of wood connections used in furniture, construction, and engineered timber products.

Strong Connections Begin with Reliable Testing – GTRL.

10. Water Absorption Test of Wood
Understanding the Water Resistance of Timber Products

Water Absorption Testing determines the amount of water absorbed by timber when exposed to moisture.

The results help assess dimensional stability, durability, and suitability of wood for different environmental conditions.

GTRL – Protecting Wood Quality Through Scientific Testing.

Common Timber Testing Services by GTRL
S.No. Test Name
1 Moisture Content
2 Density
3 Modulus of Rupture (MOR)
4 Modulus of Elasticity (MOE)
5 Compression Strength
6 Tensile Strength
7 Shear Strength
10 Water Absorption
11 Dimensional Stability
13 Bending Strength
14 Impact Strength
Master Promotional Tagline for Timber Testing

"From Moisture to Strength, GTRL Ensures Every Piece of Timber Meets Quality, Performance, and Reliability Standards."

Trust GTRL for Advanced NDT Solutions—Because Strong Foundations Build a Safer Tomorrow.

📞 Contact: +91 9798697785
Global Testing and Research Laboratory, Patna

11/09/2026

Strengthening Foundations with Advanced Crosshole Sonic Testing

Global Testing and Research Laboratory (GTRL), Patna, provides reliable and advanced Crosshole Sonic Testing (CSL) services for assessing the integrity and quality of deep foundation piles.

Crosshole Sonic Test is a non-destructive testing (NDT) method used to evaluate cast-in-situ concrete piles by measuring ultrasonic wave travel time between parallel access tubes installed inside the pile. Using advanced Proceq equipment, the test helps identify potential defects such as voids, honeycombing, cracks, inclusions, and weak concrete zones.

Key Benefits
Non-destructive and reliable pile integrity assessment
Detection of hidden defects within concrete piles
Accurate evaluation of concrete quality and uniformity
Suitable for bored cast-in-situ piles and deep foundations
Supports quality control and structural safety during construction

At GTRL, our experienced technical team follows standard testing procedures and utilizes advanced equipment to deliver accurate and dependable test results for critical infrastructure projects.

Applications

Crosshole Sonic Testing is widely used for bridges, flyovers, high-rise buildings, industrial structures, dams, and other major foundation projects.

Trust GTRL for Advanced NDT Solutions—Because Strong Foundations Build a Safer Tomorrow.

📞 Contact: +91 9798697785
Global Testing and Research Laboratory, Patna

11/09/2026

GTRL and Team is at Site for UPV and Rebound hammer test

11/09/2026

ULTRASONIC PULSE VELOCITY (UPV) & REBOUND HAMMER TEST
Non-Destructive Assessment of Concrete Structures
Assess Concrete Quality Without Damaging Your Structure

The Ultrasonic Pulse Velocity (UPV) Test and Rebound Hammer Test are widely used Non-Destructive Testing (NDT) methods for assessing the quality, uniformity, and general condition of existing concrete structures.

These tests are suitable for buildings, bridges, foundations, columns, beams, slabs, walls, retaining structures, and other reinforced concrete elements.

At Global Testing and Research Laboratory (GTRL), Patna, we provide professional NDT testing services to support engineers, consultants, contractors, developers, government organizations, and infrastructure projects in evaluating existing concrete.

🔹 What is the UPV Test?

Ultrasonic Pulse Velocity (UPV) is a non-destructive test in which an ultrasonic pulse is transmitted through concrete and the time taken for the pulse to travel through the concrete is measured.

Pulse Velocity = Path Length / Transit Time

UPV testing helps assess:

Concrete uniformity and homogeneity
Internal continuity of concrete
Possible cracks, voids and honeycombing
Areas showing variations in concrete quality
Internal discontinuities and defects
Locations requiring further investigation

In simple terms: UPV helps provide an indication of the internal quality and continuity of concrete without cutting or damaging the structure.

🔹 What is the Rebound Hammer Test?

The Rebound Hammer Test (Schmidt Hammer Test) is a non-destructive surface hardness test used to assess the relative uniformity and surface hardness of hardened concrete.

During testing, a controlled impact is applied to the concrete surface and the resulting Rebound Number (Rebound Index) is recorded.

The test helps in:

Assessing surface hardness
Comparing concrete quality at different locations
Identifying areas with comparatively lower rebound values
Evaluating concrete uniformity
Supporting the condition assessment of existing structures

In simple terms: Rebound Hammer testing provides an indication of the surface hardness and relative uniformity of concrete.

🔹 Why Combine UPV & Rebound Hammer Tests?

UPV and Rebound Hammer tests assess different characteristics of concrete. Performing both tests can provide a more comprehensive picture of concrete quality and uniformity.

Test What It Indicates
UPV Test Internal continuity, uniformity & possible discontinuities
Rebound Hammer Test Surface hardness & relative uniformity

The combined assessment can help identify areas that may require further detailed investigation or corrective action.

Where appropriate, the results may also support the estimation of compressive strength through a suitable established correlation, subject to project requirements and applicable standards.

🔹 Where Can These Tests Be Used?

Our NDT services can be useful for:

🏢 Buildings & Structures
🌉 Bridges & Flyovers
🏗️ Columns, Beams & Slabs
🏠 Residential & Commercial Projects
🏭 Industrial Structures
🧱 Foundations & Concrete Elements
🚧 Infrastructure Projects
🔍 Condition Assessment of Existing Structures

🔹 Benefits of NDT Testing

✔ Non-destructive assessment
✔ Minimal disturbance to the structure
✔ Helps identify variations in concrete quality
✔ Suitable for existing structures
✔ Helps select areas for further investigation
✔ Supports engineers and consultants in condition assessment
✔ UPV and Rebound Hammer can be used together for improved assessment

Important Technical Note

UPV and Rebound Hammer tests are indicative non-destructive assessment methods. Results can be influenced by factors such as moisture condition, surface condition, carbonation, aggregate type, age of concrete, temperature, test orientation, and other site conditions.

Therefore, results should be interpreted by a competent technical professional. NDT results should not be considered a direct replacement for destructive compressive-strength testing. Where required, core testing or other appropriate investigations may be recommended.

Get Your Concrete Tested by GTRL
Global Testing and Research Laboratory (GTRL), Patna

Professional • Reliable • Technical • Non-Destructive Testing Services

Whether you are assessing an existing building, bridge, industrial structure, foundation, column, beam, slab, or other concrete element, GTRL can assist you with suitable NDT testing and technical assessment.

📞 For UPV, Rebound Hammer & Other Testing Requirements

Call / WhatsApp: 9798697785

Contact GTRL today for your concrete testing requirements and technical assistance.