Understanding BS EN ISO 22282-2: A Guide to Geohydraulic Borehole Testing
The BS EN ISO 22282-2:2012 standard is a critical document for civil engineers, hydrogeologists, and geotechnical contractors. It defines the requirements and procedures for determining the local water permeability of soil and rock using open systems within a borehole. Unlike closed systems that use packers to isolate sections under pressure, open systems typically involve measurements where the water surface is open to atmospheric pressure. Scope and Purpose of the Standard
The primary goal of this standard is to establish groundwater conditions and determine the hydraulic properties of the ground. These parameters are vital for:
Foundation Stability: Assessing how water flow affects the bearing capacity of the soil.
Seepage Analysis: Predicting water ingress into excavations or through dams.
Structural Integrity: Ensuring that engineering works can withstand geohydraulic pressures.
The standard applies to tests conducted both above and below the groundwater table in various geological conditions. Core Testing Methods
BS EN ISO 22282-2 outlines three primary methods for measuring permeability ( ) based on the ground's expected flow characteristics: Constant Flow Rate Method: Best for: Higher permeability soils (typically
Procedure: A steady flow of water is injected or withdrawn while recording the change in the water head over time until stability is reached. Variable Head Method (Falling or Rising Head): Best for: Intermediate permeability ranges.
Procedure: An instantaneous change in the water level (head) is induced—either by adding water (falling head) or removing it (rising head)—and the rate at which the level returns to its original state is recorded. Constant Head Method:
Procedure: The water level in the borehole is maintained at a constant height above or below the static water level, and the volume of water required to maintain this level is measured over time. Equipment and Technical Requirements
To ensure accuracy, the standard mandates specific equipment standards and calibration protocols:
Water-Level Measurement: Devices must be accurate to within 0.01 meters.
Flow Measurement: Devices used to measure the rate of injection or withdrawal must be accurate to within 5% of the reading range.
Calibration: All instruments must be calibrated before use, and these records must be included in the final test report. Implementation and Reporting
A standard-compliant investigation requires two distinct reports:
Field Report: Contains raw data, including borehole location, depth of the test section, initial water levels, and time-stamped measurements during the test.
Test Report: Provides the final interpretation of results, including calculated permeability values, graphs of head vs. time, and details on any unsaturated soil conditions encountered. Where to Access BS EN ISO 22282-2
The full technical document is a copyrighted publication and is usually obtained through official standards bodies or technical libraries: ISO 22282-2:2012 - Geotechnical investigation and testing
BS EN ISO 22282-2:2012 is the British implementation of the international standard for geotechnical investigation and geohydraulic testing, specifically focusing on water permeability tests in a borehole using open systems. Core Purpose and Scope
Objective: It specifies requirements for determining the local permeability of soil and rock both above and below the groundwater level.
Application: The standard is part of geotechnical investigation services performed in accordance with EN 1997-1 and EN 1997-2 (Eurocode 7).
Current Status: The 2012 version remains current and was last reviewed and confirmed by the International Organization for Standardization (ISO) in 2023. Primary Test Methods
The standard identifies three main methods based on the expected permeability range of the ground: Constant Flow Rate Method: Used for higher permeabilities (
m/s). It involves maintaining a steady water flow and recording the head change over time.
Variable Head Method: Used for intermediate permeability ranges. This involves inducing an instantaneous head change (e.g., "slug test") and recording the decay of that head over time.
Rising/Falling Head Tests: Common field applications where water is either added to (falling) or removed from (rising) the borehole to measure the rate of level change. Equipment and Setup Requirements
To ensure accuracy, the standard specifies technical requirements for the following:
Borehole Preparation: Guidance on isolating test sections in both stable (rock) and non-stable (soil) ground, using perforated tubes, filter packs, or packers. Measurement Accuracy: Water Level: Accuracy must be within 0.01 meters.
Flow Rate: Devices must have an accuracy within 5% of their range.
Calibration: All equipment must be calibrated before use or at regular intervals during testing. Calculation and Reporting
Formulae: Permeability is calculated using factors like the radius and length of the test section, and the slope of the line from a graph of the natural log of the head versus time (
Documentation: A field report must be completed on-site, including an installation record (equipment type) and a log of measured values.
Informative Annexes: The standard includes examples of test reports and guidance on the interpretation of results. ISO 22282-2:2012 - Geotechnical investigation and testing
The BS EN ISO 22282-2:2012 standard specifies the requirements for determining local water permeability in soils and rocks both above and below the groundwater level. It focuses specifically on geohydraulic tests conducted in open boreholes, also known as "open systems," which do not use packers to isolate test sections. Key Content of the Standard
The document is approximately 36 pages long and covers the technical principles, equipment, and procedures necessary for field execution. Test Methods Included:
Constant Flow Rate Method: Measuring the flow rate required to maintain a specific water level.
Constant Head Method: Maintaining a constant pressure head and measuring the resulting flow.
Variable Head (Falling/Rising Head) Method: Measuring the rate of water level change over time. Applications:
Establishing groundwater conditions and hydraulic properties of the ground.
Assessing the stability of foundations, shear strength, and seepage conditions.
Gathering data for the design and implementation of civil engineering works.
Soil Conditions: It includes procedures for both saturated and unsaturated soil conditions. Document Structure
The standard follows a structured format common to ISO geotechnical documents:
Scope: Defines applicability for geotechnical investigations under EN 1997-1 and EN 1997-2.
Equipment: Lists requirements for measuring devices, water supply, and borehole preparation.
Test Procedures: Step-by-step instructions for preparing the test section and conducting measurements.
Results and Reporting: Requirements for field reports, data interpretation, and final test reports. Official Sources for the PDF
As a copyrighted document, official digital versions are available for purchase through several standards organizations: BSI Knowledge: The primary UK source for the "BS" version.
ISO Official Store: Provides the core international version.
DIN Media: Offers the BS EN ISO version for international buyers. ISO 22282-2:2012 - Geotechnical investigation and testing
BS EN ISO 22282-2:2012 is the authoritative British and International Standard for determining the local water permeability ( ) of soil and rock through open-system borehole testing bs en iso 22282-2 pdf
. It is a critical component of geotechnical investigations used to assess site safety, structural integrity, and seepage conditions for civil engineering projects. BSI Knowledge Core Objectives The standard provides a rigorous framework for: Establishing local groundwater conditions.
Determining hydraulic properties (permeability) of both saturated and unsaturated ground.
Informing the design of foundations, earthworks, and dewatering programs. iTeh Standards Primary Test Methods
The standard specifies three distinct methodologies based on the expected permeability of the ground: iTeh Standards Procedure Summary Constant Flow Rate High permeability (
Impose a steady flow and record the change in hydraulic head over time. Variable Head Intermediate permeability
Induce an instantaneous head change and monitor the decay (recovery) rate. Constant Head Lower permeability ( 10 to the negative 7 power 10 to the negative 4 power
Maintain a fixed water level and measure the flow rate required to keep it constant. Key Technical Features Open-System Focus:
Unlike other parts of the ISO 22282 series that use packers (seals), Part 2 focuses on tests conducted in "open holes" where an isolated section is defined by the borehole's geometry. Unsaturated Soil Requirements:
Includes specific guidance for testing above the groundwater table, requiring a pre-saturation phase to reduce suction and ensure reliable Calculation Models:
Annex B outlines recognized interpretation methods, such as the Bouwer and Rice Cooper–Bredehoeft–Papadopoulos Calibration & Compliance:
Mandates the use of calibrated instruments and detailed reporting of field data to meet Eurocode 7 requirements. iTeh Standards Practical Applications
Consultants and geotechnical engineers use this standard to: BSI Knowledge SIST EN ISO 22282-2:2012 - iTeh Standards
BS EN ISO 22282-2 an international standard that specifies requirements for determining the local water permeability of soils and rocks in an open borehole
. It is a critical component of geotechnical investigation services, aligning with Eurocode 7 (EN 1997-1 and EN 1997-2) to provide data for foundation design, seepage analysis, and dewatering programs. cdn.standards.iteh.ai Core Scope and Objectives This standard deals specifically with open systems
, where water is injected into or withdrawn from an isolated section of a borehole without the use of permanent seals or closed-loop pressure monitoring typical of Part 6. It applies to both saturated and unsaturated conditions , above and below the groundwater level. cdn.standards.iteh.ai Primary Test Methods
The standard outlines three primary methods based on the expected permeability ( -value) of the ground: standards.iteh.ai Constant Flow Rate Method : Best for high permeabilities (
m/s). It involves maintaining a steady injection or withdrawal rate while recording the change in hydraulic head over time. Variable Head Method : Ideal for intermediate ranges ( 10 to the negative 6 power 10 to the negative 9 power
m/s). An instantaneous change in head is produced (e.g., falling or rising head test), and the rate of recovery is measured. Constant Head Method : Suitable for mid-range permeabilities ( 10 to the negative 4 power 10 to the negative 7 power
m/s). A constant water level is maintained, and the required flow rate to sustain it is recorded. cdn.standards.iteh.ai Technical Requirements for Execution Test Section Preparation
: In non-stable ground, the standard requires perforated tubes, filter material, or open-end tests at the casing base. In stable rock, isolation may involve inflated packers or temporary piezometers. Equipment Accuracy : Water level measurements must be accurate to , and flow rate devices must be accurate within of their measuring range. Unsaturated Soils
: The standard provides specific guidance for pre-saturating low-permeability soils (silts/clays) to minimize the effects of suction, which can otherwise lead to unrepresentative results. Data Interpretation
: Informative annexes include standard interpretation models such as the Bouwer and Rice Cooper–Bredehoeft–Papadopoulos cdn.standards.iteh.ai Practical Applications The data derived from these tests are essential for:
SIST EN ISO 22282-2:2012 - Water Permeability Tests in Boreholes
The Role of BS EN ISO 22282-2 in Geotechnical Engineering BS EN ISO 22282-2 is a critical technical standard that defines the procedures for determining the local water permeability of soils and rocks. As part of the broader BS EN ISO 22282
series on geohydraulic testing, this specific part focuses on water permeability tests conducted in boreholes using "open systems"—meaning tests performed without the use of packers to isolate sections. Purpose and Scope
The primary aim of the standard is to provide a reliable framework for establishing groundwater conditions and determining the hydraulic properties of the ground. These parameters are essential for: Foundation Design
: Assessing the stability and drainage requirements for large structures. Seepage Analysis
: Predicting how water will move through the earth, which is vital for dams and retaining walls. Dewatering Programs
: Planning the removal of groundwater during construction to ensure a dry and safe working environment. Core Test Methods
The standard details three primary methods for measuring the permeability coefficient (
), selected based on the expected flow characteristics of the site: Constant Flow Rate Method : Best for highly permeable ground (
m/s), where water is injected or withdrawn at a steady rate while measuring head changes. Variable Head Method : Used for intermediate permeability ( 10 to the negative 6 power 10 to the negative 9 power
m/s), involving an instantaneous change in water level followed by a measurement of its recovery over time. Constant Head Method : Suited for lower permeability ranges ( 10 to the negative 4 power 10 to the negative 7 power
m/s), where a fixed water level is maintained and the required flow rate is recorded. Technical Implementation
BS EN ISO 22282-2 provides rigorous requirements for equipment accuracy, such as water-level measurements precise to 0.01 m and flow rate devices accurate within 5% of their range. It also offers specific guidance for preparing test sections in different ground conditions, including non-stable soils requiring casing and unsaturated conditions where pre-saturation may be necessary. Conclusion
By standardizing these geohydraulic tests, BS EN ISO 22282-2 ensures that geotechnical investigations yield consistent and comparable data. This accuracy directly impacts project safety and cost-effectiveness, allowing engineers to make informed decisions about structural integrity and groundwater management. Bouwer and Rice models mentioned in the standard's annexes? ISO 22282-2:2012 - Geotechnical investigation and testing
BS EN ISO 22282-2 is an essential international standard for geotechnical engineers and hydrogeologists, specifically covering water permeability tests in boreholes using open systems. As part of a larger series on geohydraulic testing, this standard provides the technical framework for measuring how easily water flows through soil or rock in its natural state.
The standard is indispensable for site characterization in projects involving foundation design, tunneling, and groundwater management. You can obtain the official BS EN ISO 22282-2 PDF from authorized retailers like the BSI Knowledge Store or DIN Media. Scope and Application
This part of the ISO 22282 series focuses on determining local permeability in both saturated and unsaturated ground conditions.
Geotechnical Investigation: It aligns with Eurocode 7 (EN 1997-1 and EN 1997-2) requirements for site investigations.
Open Systems: Unlike "closed systems" that use packers to isolate sections under high pressure, Part 2 deals with "open hole" tests, where the water level is typically manipulated in the casing or piezometer.
Broad Reach: It is used to evaluate the stability of foundations, seepage conditions for dams, and the effectiveness of dewatering programs. Core Test Methods
The standard outlines three primary methodologies based on the expected permeability ( ) of the ground: Constant Flow Rate High permeability (
Maintaining a steady water flow and recording the resulting head change over time. Variable Head Intermediate permeability
Inducing an instantaneous head change (slug test) and recording the decay/recovery as it returns to equilibrium. Constant Head Low permeability ( 10-410 to the negative 4 power
Maintaining a fixed water level and measuring the flow rate required to keep it constant. Equipment and Technical Requirements
To ensure accuracy and compliance, the following equipment and steps are mandatory under BS EN ISO 22282-2: BS EN ISO 22282-2:2012 - BSI Knowledge
A useful feature of BS EN ISO 22282-2 is its comprehensive standardization of water permeability tests in boreholes using open systems
. This standard is vital for geotechnical engineers and geologists to accurately determine the hydraulic properties of the ground, which directly impacts the safety and structural integrity of engineering projects. BSI Knowledge Key Technical Features Versatile Test Methods
: The standard outlines three specific procedures based on the permeability ( ) range of the soil or rock: Constant Flow Rate : Used for higher permeabilities (
), where a steady flow is maintained while recording head changes. Variable Head (Rising/Falling) Understanding BS EN ISO 22282-2: A Guide to
: Ideal for intermediate ranges, involving an instantaneous head change and monitoring the decay over time. Constant Head : Applied for lower permeabilities ( 10 to the negative 7 power
), maintaining a fixed head and measuring the resulting flow. Broad Environmental Application : It specifies requirements for testing in both saturated and unsaturated conditions
, and for test sections located either above or below the groundwater level. Standardized Test Section Preparation
: Provides clear instructions for preparing test sections in different soil conditions, such as using perforated tubes with filter packs for non-stable ground or packer isolation for stable rock. Data Accuracy & Reporting
: Mandates precise equipment calibration (e.g., water-level measurement accuracy within
) and defines specific field and test report contents to ensure consistent result interpretation. iTeh Standards Practical Benefits Engineering Insights
: Provides data essential for assessing foundation stability, shear strength, and seepage conditions. Project Decision Support
: Helps in planning groundwater lowering, assessing the effectiveness of dam cut-offs, and determining the absorption capacity for grouting. Regulatory Compliance
: Serves as a standard part of geotechnical investigation services aligned with Eurocode 7 (EN 1997-1 and EN 1997-2). BSI Knowledge
You can access or purchase the full documentation through the BSI Knowledge portal or other authorized standards retailers like summary of the calculation formulas
Here’s a sample review for the standard BS EN ISO 22282-2:2012 – Geotechnical investigation and testing – Part 2: Permeability tests in a borehole using open systems (PDF format):
Title: Essential for geotechnical engineers – but the PDF has typical drawbacks
Rating: ⭐⭐⭐⭐ (4/5)
Review:
As a geotechnical consultant, I regularly need ISO 22282-2 for specifying and interpreting open-system permeability tests (e.g., Lefranc, open-end, and packer tests without back pressure). The BS EN ISO version is the UK-adopted standard, so it’s identical to the international one but includes the UK foreword and national annex.
Pros:
Cons (PDF-specific):
Verdict: Buy it if you’re legally required to follow BS EN standards. For reference only, a library copy or preview might suffice. The technical content is excellent, but BSI’s PDF formatting lags behind modern e-documents.
It was a typical Monday morning for John, a quality assurance manager at a leading geosynthetic manufacturing company in the UK. As he sipped his coffee, he began to review the company's product development pipeline. One of the projects that caught his attention was the development of a new geotextile product, which was required to meet specific international standards.
John knew that the product had to comply with the BS EN ISO 22282-2 standard, which specified the requirements for the determination of the tensile strength of geotextiles. He quickly opened his computer and searched for the standard online.
After a few clicks, he landed on a webpage that offered the BS EN ISO 22282-2 PDF for download. John was relieved to find that the standard was readily available, and he quickly downloaded it to his computer.
As he began to review the standard, John noticed that it was divided into several parts, with Part 2 specifically focusing on the test method for determining the tensile strength of geotextiles. He realized that this standard would be crucial in ensuring that their new product met the required specifications.
John spent the next few hours thoroughly reviewing the standard, highlighting key sections, and making notes on the testing procedures that needed to be followed. He was impressed by the level of detail provided in the standard, which gave him confidence that their product would meet the required standards.
With a clear understanding of the testing requirements, John was able to communicate effectively with the product development team, ensuring that they designed and manufactured the product in accordance with the BS EN ISO 22282-2 standard.
As the day went on, John received updates from the testing laboratory, which confirmed that the product had passed the tensile strength tests with flying colors. John was thrilled to see that their product met the required standards, and he knew that this would give them a competitive edge in the market.
The successful testing and certification of the product to BS EN ISO 22282-2 marked a significant milestone for John's company, and he felt proud to have played a key role in ensuring that their product met the highest international standards.
The availability of the BS EN ISO 22282-2 PDF had made it possible for John to access the information he needed quickly and efficiently, allowing him to focus on ensuring that their product met the required specifications. He made a mental note to always keep a copy of the standard handy, as it would undoubtedly be a valuable resource for future projects.
Title: BS EN ISO 22282-2:2012 – Geotechnical investigation and testing. Determination of permeability of soil and rock using field testing
Standard Overview:
BS EN ISO 22282-2 is a crucial European standard adopted from the international ISO framework. It specifies the requirements for performing field permeability tests by the open hole method (also known as slug tests or bailer tests) in soils and rock. This part of the ISO 22282 series focuses on tests conducted in a single borehole without packers, providing essential data for hydrogeological and geotechnical projects.
Key Technical Contents (What the PDF includes):
Who needs this PDF?
Why purchase the official PDF?
Available from: BSI Group, ISO member bodies, or authorized standards resellers (e.g., ANSI Webstore, SAI Global, Techstreet).
Related standards:
BS EN ISO 22282-2:2012 defines the requirements for determining water permeability in soils and rocks through borehole tests using open systems. 🏗️ Scope and Application
This standard is part of the geohydraulic testing suite used in geotechnical investigations (EN 1997-1 and EN 1997-2).
Target Environment: Applicable to tests conducted both above and below the groundwater table. Purpose: To determine the local permeability coefficient (
) for foundation design, seepage analysis, and slope stability.
Limitations: Focuses on "open systems" where water level is free to move or is maintained at a specific head within a borehole. 🧪 Core Test Methods
The standard details three primary methods for executing the tests:
Variable Head Test: Measuring the rate of water level rise or fall (rising/falling head) after an initial displacement.
Constant Head Test: Maintaining a steady water level and measuring the flow rate required to keep it constant.
Constant Flow Rate Test: Injecting or pumping water at a fixed rate and measuring the resulting head change over time. 🛠️ Equipment and Preparation
Specific technical requirements are mandated for the testing apparatus: Water Level Measurement: Accuracy must be within 0.01 m.
Flow Meters: Measurement accuracy should be within 5% of the range.
Installation: Includes requirements for filter packs, perforated tubes, and the preparation of test sections in both stable and unstable ground. 📝 Reporting Requirements INTERNATIONAL STANDARD ISO 22282-2
In the world of civil engineering, BS EN ISO 22282-2 is the rulebook for measuring how water flows through the ground using open borehole systems. It’s a critical standard used to ensure that everything from skyscrapers to high-speed railways stays standing on solid, dry-ish ground. The Story: Testing the Ground for HS2
Imagine a massive infrastructure project like the HS2 (High Speed 2) railway in the UK. Before a single rail can be laid, engineers need to know if the ground will behave like a solid foundation or a soggy sponge.
The Problem: At a site like Greatworth, engineers needed to design deep foundations and drainage systems. If they underestimated the ground's permeability, water could seep in and destabilize the entire structure.
The Standard in Action: To get accurate data, they turned to BS EN ISO 22282-2:2012. This standard provided the specific "recipes" for three types of tests:
Constant Head Tests: Pumping water in at a steady rate to see how much the ground can "drink".
Falling Head Tests: Filling a borehole to the top and timing how fast the water level drops.
Rising Head Tests: Pumping water out and watching how fast the groundwater rushes back in. Title: Essential for geotechnical engineers – but the
The Result: By following the rigorous procedures in the BS EN ISO 22282-2 PDF, contractors like Stuart Wells were able to provide precise permeability values. These numbers allowed the designers to build safer foundations, plan effective dewatering, and ultimately keep the project on track. Why This Standard Matters
Safety: Prevents structural failures caused by hidden water flow or seepage.
Efficiency: Helps engineers design the right amount of drainage, saving millions in construction costs.
Reliability: Using a standardized "open hole" method ensures that data from one site can be accurately compared to another across the globe. INTERNATIONAL STANDARD ISO 22282-2
It is critical to use the official, copyrighted version for legal compliance, project tenders, and audit trails. Unauthorized copies (often found free online) may be outdated, incomplete, or non-compliant with UK/EU regulations.
Under-dewatering an excavation can lead to flooding and instability; over-dewatering can cause ground settlement and damage to neighboring structures. BS EN ISO 22282-2 ensures the data used for dewatering calculations is reliable.
BS EN ISO 22282-2:2012 is a British-adopted European standard that is identical to the international ISO 22282-2. Its full title is: "Geotechnical investigation and testing — Determination of permeability of soils in the laboratory — Part 2: Determination of permeability using water flow in a rigid-wall permeameter."
This document is part of a multi-part series that specifies methods for measuring how easily water passes through soil samples. Specifically, Part 2 focuses on the constant-head and falling-head tests using a rigid-wall permeameter, typically used for granular soils like sands and gravels.
To fully understand the ecosystem, know that ISO 22282 is a multi-part series:
| Part | Title | Focus | |------|-------|-------| | Part 1 | General requirements | All permeability testing | | Part 2 | Permeability tests in soils using water and air | This document | | Part 3 | Permeability tests in rock (water) | Lugeon tests, packer tests | | Part 4 | Pumping tests | Large-scale aquifer tests | | Part 5 | Infiltrometer tests | Surface infiltration rates | | Part 6 | Water level monitoring | Borehole water level measurement |
Note: BS EN ISO 22282-2 supersedes older national standards such as BS 5930 (in parts) and previous UK permeability test guidelines.
BS EN ISO 22282-2:2012 is an essential technical standard for any geotechnical laboratory or field testing company conducting borehole permeability tests using open end or packer systems. It ensures consistency, repeatability, and international recognition of test results.
To comply with UK regulations (post-Brexit, the “BS EN” designation remains valid), engineers must purchase the official PDF from BSI or an authorized reseller. Using the official document guarantees access to full annexes, calculation examples, and critical notes on equipment calibration that are often omitted from unauthorized copies.
Disclaimer: Prices and availability are subject to change. Always verify the latest version (currently 2012, confirmed still active as of 2026) before purchase.
The BS EN ISO 22282-2:2012 standard specifies the requirements for water permeability tests in boreholes using open systems. This part of the ISO 22282 series is a critical component of geotechnical investigations, used to determine the local permeability of soil and rock both above and below the groundwater level. Key Features of the Standard
Scope & Application: Defines procedures for geohydraulic testing to establish groundwater conditions and gather hydraulic properties essential for the design of foundations, retaining structures, and underground works.
Open System Methodology: Focuses on tests conducted in open boreholes without the use of packers, including both rising head and falling head test methods.
Test Environment: Applicable for stable and non-stable soil/rock, as well as unsaturated conditions.
Required Equipment: Specifies the use of casings, piezometers, and precise measuring devices for water volume and time (reading in seconds).
Reporting Requirements: Mandates comprehensive field reports that include a graphical presentation of results, quality evaluations, and limitations of the data to ensure third-party transparency. Typical Applications
Site Stability: Assessing foundation stability and seepage conditions for structural integrity.
Dewatering Planning: Determining groundwater inflow/outflow parameters for excavation and dewatering projects.
Engineering Modeling: Providing hydraulic input parameters for seepage and groundwater models used in environmental assessments.
For professional access or to purchase the full document, you can visit the BSI Knowledge store or other authorized standards distributors like NBS. INTERNATIONAL STANDARD ISO 22282-2
BS EN ISO 22282-2:2012 defines procedures for measuring water permeability in soils and rocks via borehole open systems, supporting Eurocode 7 geotechnical site investigations. The standard covers techniques for assessing groundwater flow in foundation design and environmental assessments, replacing parts of BS 5930. For official access, you can find the full document on the BSI Knowledge portal or the ISO Online Browsing Platform.
ISO 22282-2:2012(en), Geotechnical investigation and testing
BS EN ISO 22282-2 the specific British and International standard for water permeability tests conducted in boreholes using open systems
. It is part of a larger series of standards focused on geotechnics and hydrogeology. Key Aspects of BS EN ISO 22282-2
The standard defines the procedures for measuring the hydraulic conductivity of soil and rock. Unlike Part 3 (which covers pressure tests in closed systems like packers), Part 2 focuses on open systems
, where water levels are monitored in a borehole or a standpipe. Test Methods : It details both constant-head falling/rising-head Constant-head
: Water is added or removed to maintain a stable level, and the flow rate is measured. Falling/Rising-head
: The water level is suddenly changed, and the rate at which it returns to static equilibrium is recorded. Application
: Essential for civil engineering projects, such as designing foundations, dams, and drainage systems, where understanding how water moves through the ground is critical. Requirements
: Specifies the equipment needed, the preparation of the borehole, the execution of the test, and the required data for reporting results. Where to Find the Document
As a copyrighted technical standard, the full PDF is generally not available for free legally. You can obtain official copies from the following sources: British Standards Institution provides the BS EN ISO version specifically for the UK. International Organization for Standardization offers the core ISO 22282-2 document. IHS Markit/Techstreet : Common commercial aggregators for engineering standards. The 22282 Series Context
To understand the full scope of ground permeability testing, it helps to know where Part 2 fits: : General rules and requirements.
: Water permeability tests in a borehole using open systems (This document). : Water pressure tests in rock. : Pumping tests. : Infiltrometer tests.
The BS EN ISO 22282-2:2012 standard specifies the requirements for determining the local permeability of soil and rock using water permeability tests in open boreholes. It is a critical component of geotechnical investigations used for foundation design, seepage analysis, and dewatering planning. Core Objectives
The standard provides a framework for geohydraulic testing to:
Determine the hydraulic properties of the ground (permeability, transmissivity).
Establish groundwater conditions above and below the water table.
Assess site features crucial for the structural integrity of engineering works. Primary Test Methods
The standard outlines three main methods based on the expected permeability ( -value) of the ground: Application Range ( Procedure Summary Constant Flow Rate >10-6is greater than 10 to the negative 6 power
Injecting or withdrawing water at a steady rate while measuring head change over time. Variable Head 10-610 to the negative 6 power 10-910 to the negative 9 power
Producing an instantaneous change in hydraulic head and measuring its decay over time. Constant Head 10-410 to the negative 4 power 10-710 to the negative 7 power
Maintaining a steady hydraulic head and measuring the required flow rate over time. Equipment & Requirements Essential tools for compliance include:
Borehole setup: Casing or piezometers, and in some cases, perforated tubes or filter material.
Measurement devices: Flow rate sensors (5% accuracy) and water-level gauges (0.01 m accuracy).
Calibration: All equipment must be calibrated periodically or immediately before use. Accessing the PDF
This standard is a copyright-protected document published by the British Standards Institution (BSI) and the International Organization for Standardization (ISO).
Official Purchase: You can buy the full PDF from authorized retailers like the BSI Knowledge Store or the ISO Store.
Previews: Some standards platforms like iTeh Standards offer a free preview of the first few pages. INTERNATIONAL STANDARD ISO 22282-2
Before searching for a "bs en iso 22282-2 pdf", engineers must understand the value of the document. Here is why compliance matters:
