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Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 144 (from laksa085)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa144.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www.insitutek.com/faq/what-is-evd/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www.insitutek.com/faq/what-is-evd/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www.insitutek.com\/faq\/what-is-evd\/","crawl_time":1773111779,"first_indexed_time":1755261555,"http_code":200,"src_unparsed":"com,insitutek!www,\/faq\/what-is-evd\/ s443","src_root_hash":"15816715209851515544","history_drop_reason":null,"meta_title":"What is Evd? - Insitutek","meta_descriptions":[],"attrs_boilerpipe_text":"Evd is the dynamic deformation modulus (also known as the dynamic deformation module, dynamic modulus of deformation, dynamic stiffness modulus, composite stiffness, effective stiffness or surface modulus). Modulus is the most accurate and independent means for judging deformation and, thus, a material’s level of compaction. Evd is used to measure bearing capacity and compaction quality for subsoil’s and subgrade materials, unbound base layers, granular layers, backfilling materials, soil stabilisation with lime, cold recycling materials and pavements, cycle tracks and footpaths.\nThe soil receives an impact of maximum force Fs transmitted through the fall of the drop weight onto a circular plate of radius r, which is assumed to be rigid. When the device is calibrated, the force is selected such that the maximum normal stress σ under the load plate is 0.1MN\/m2.\nTo calculate Evd, the deformability of the soil under a vertical load, as described above, with a settlement amplitude s (in mm) and the duration of impact ts:\nEvd (MN\/m2) = 1.5 x r x σ \/s\nFor the 10kg drop weight and 300mm diameter plate Evd = 22.5\/s\nFor the 15kg drop weight and 300mm diameter plate Evd = 33.75\/s","attrs_markdown":"[![](data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAvQAAAeAAQMAAACbmVElAAAAA1BMVEVHcEyC+tLSAAAAAXRSTlMAQObYZgAAAMlJREFUeNrtwTEBAAAAwqD1T20LL6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA4GfQHgAB4KQCZAAAAABJRU5ErkJggg==)![](https:\/\/www.insitutek.com\/wp-content\/uploads\/2025\/06\/Insitutek-Logo-Full-Colour-RGB-scaled.png)](https:\/\/www.insitutek.com\/)\n\n[Skip to main content](https:\/\/www.insitutek.com\/faq\/what-is-evd\/#ajax-content-wrap)\n\n[Close Search](https:\/\/www.insitutek.com\/faq\/what-is-evd\/)\n\n[Insitutek](https:\/\/www.insitutek.com\/)\n\n[search](https:\/\/www.insitutek.com\/faq\/what-is-evd\/#searchbox)\n\n[Menu](https:\/\/www.insitutek.com\/faq\/what-is-evd\/#slide-out-widget-area)\n\n- [Home](https:\/\/www.insitutek.com\/)\n- [You](https:\/\/www.insitutek.com\/you\/)\n- [Us](https:\/\/www.insitutek.com\/us\/)\n- [Together](https:\/\/www.insitutek.com\/together\/)\n- [Contact](https:\/\/www.insitutek.com\/contact-us\/)\n\n- [search](https:\/\/www.insitutek.com\/faq\/what-is-evd\/#searchbox)\n- [Menu](https:\/\/www.insitutek.com\/faq\/what-is-evd\/#slide-out-widget-area)\n\nInsitutek\n\n# What is Evd?\nEvd is the dynamic deformation modulus (also known as the dynamic deformation module, dynamic modulus of deformation, dynamic stiffness modulus, composite stiffness, effective stiffness or surface modulus). Modulus is the most accurate and independent means for judging deformation and, thus, a material’s level of compaction. Evd is used to measure bearing capacity and compaction quality for subsoil’s and subgrade materials, unbound base layers, granular layers, backfilling materials, soil stabilisation with lime, cold recycling materials and pavements, cycle tracks and footpaths.\n\nThe soil receives an impact of maximum force Fs transmitted through the fall of the drop weight onto a circular plate of radius r, which is assumed to be rigid. When the device is calibrated, the force is selected such that the maximum normal stress σ under the load plate is 0.1MN\/m2.\n\nTo calculate Evd, the deformability of the soil under a vertical load, as described above, with a settlement amplitude s (in mm) and the duration of impact ts:\n\nEvd (MN\/m2) = 1.5 x r x σ \/s\n\nFor the 10kg drop weight and 300mm diameter plate Evd = 22.5\/s  \n For the 15kg drop weight and 300mm diameter plate Evd = 33.75\/s\n\n- ### Previous PostWhat is the relationship between Evd and Ev2?\n- ### Next PostWhat different names is the PANDA® Variable Energy Dynamic Cone Penetrometer known as?\n\n## **Excel** beyond the expected.\n### Get in touch\nReady to build better? Let’s talk about how we can support your next project, and where we can go from there.\n\n## [Contact us](https:\/\/www.insitutek.com\/contact-us\/)\n\n### Stay connected\nJoin our community of like-minded industry professionals and receive insights from our visionary leader.\n\n### Quick links\n[\\[email protected\\]](https:\/\/www.insitutek.com\/cdn-cgi\/l\/email-protection#bad2dfd6d6d5fad3d4c9d3cecfcedfd194d9d5d7)\n\n[\\+61 (0) 7 3054 0540](<tel:+61 7 3054 0540>)\n\n- [Linkedin](https:\/\/au.linkedin.com\/company\/insitutek)\n- [Youtube](https:\/\/www.youtube.com\/c\/Insitutek)\n- [Whatsapp](tel:+61%20404%20114%20751)\n\n[![](https:\/\/www.insitutek.com\/wp-content\/uploads\/2025\/06\/Insitutek-Logo-with-Bcorp-white.png)](https:\/\/www.bcorporation.net\/en-us\/find-a-b-corp\/company\/insitutek\/)\n\n[Share](https:\/\/www.insitutek.com\/faq\/what-is-evd\/ \"Share this\")  [Share](https:\/\/www.insitutek.com\/faq\/what-is-evd\/ \"Share this\")  [Share](https:\/\/www.insitutek.com\/faq\/what-is-evd\/ \"Share this\")  [Pin](https:\/\/www.insitutek.com\/faq\/what-is-evd\/ \"Pin this\")\n\nCopyright © Insitutek Pty Ltd. All Rights Reserved.   \n[Privacy Policy](https:\/\/www.insitutek.com\/privacy-policy-3\/) [Terms and Conditions](https:\/\/www.insitutek.com\/website-terms-conditions-of-use\/) [Policies and Procedures](https:\/\/www.insitutek.com\/policies-and-procedures\/) [Environmental Social Governance (ESG)](https:\/\/www.insitutek.com\/environmental-social-governance-esg-reporting\/)\n\n[Close Menu](https:\/\/www.insitutek.com\/faq\/what-is-evd\/)\n\n- [Home](https:\/\/www.insitutek.com\/)\n- [You](https:\/\/www.insitutek.com\/you\/)\n- [Us](https:\/\/www.insitutek.com\/us\/)\n- [Together](https:\/\/www.insitutek.com\/together\/)\n- [Contact](https:\/\/www.insitutek.com\/contact-us\/)\n\n- [How We Can Help](https:\/\/www.insitutek.com\/faq\/what-is-evd\/)\n  - [Ground Improvement – delivering more sustainable outcomes](https:\/\/www.insitutek.com\/solutions\/ground-improvement-delivering-more-sustainable-outcomes\/)\n  - [In Situ Testing – enabling you to make better informed timely decisions](https:\/\/www.insitutek.com\/solutions\/insitu-testing-enabling-you-make-better-informed-timely-decisions\/)\n  - [Compaction Control](https:\/\/www.insitutek.com\/solutions\/compaction-control\/)\n  - [Bearing Capacity](https:\/\/www.insitutek.com\/solutions\/bearing-capacity\/)\n  - [Site Investigation](https:\/\/www.insitutek.com\/solutions\/soil-and-site-investigation\/)\n  - [Geotechnical Drilling](https:\/\/www.insitutek.com\/solutions\/geotechnical-drilling\/)\n  - [Asphalt Pavement Non Destructive Testing (NDT)](https:\/\/www.insitutek.com\/solutions\/asphalt-pavement-non-destructive-testing-ndt\/)\n  - [Concrete Pavement Non Destructive Testing (NDT)](https:\/\/www.insitutek.com\/solutions\/concrete-pavement-non-destructive-testing-ndt\/)\n  - [Pavement Condition Assessment](https:\/\/www.insitutek.com\/services\/pavement-condition-assessment\/)\n  - [Bridge Deck and Structure Condition Assessment](https:\/\/www.insitutek.com\/services\/bridge-deck-and-structure-condition-assessment\/)\n  - [Rail Formation & Ballast Condition Assessment](https:\/\/www.insitutek.com\/solutions\/rail-formation-ballast-condition-assessment\/)\n- [Our Products](https:\/\/www.insitutek.com\/faq\/what-is-evd\/)\n  - [Clay Soil Stabilisation – sustainable long-term ground improvement](https:\/\/www.insitutek.com\/products\/soil-stabilisation-terra-3000\/)\n  - [Light Weight Deflectometer](https:\/\/www.insitutek.com\/products\/light-weight-deflectometer\/)\n  - [Dynamic CBR](https:\/\/www.insitutek.com\/products\/dynamic-cbr\/)\n  - [Plate Load Test](https:\/\/www.insitutek.com\/products\/plate-load-test\/)\n  - [Intelligent Compaction](https:\/\/www.insitutek.com\/products\/intelligent-compaction\/)\n  - [Cone Penetration Test – CPT](https:\/\/www.insitutek.com\/products\/cone-penetration-test-cpt\/)\n  - [GRIZZLY® Dynamic Probing Super Heavy](https:\/\/www.insitutek.com\/products\/grizzly-dynamic-probing-super-heavy\/)\n  - [PANDA® Variable Energy DCP](https:\/\/www.insitutek.com\/products\/panda-instrumented-dcp\/)\n  - [eKODIAK® Multi-Mass Automated DCP](https:\/\/www.insitutek.com\/products\/ekodiak-multi-mass-automated-dcp\/)\n  - [PANDITO® Ultra-light DCP](https:\/\/www.insitutek.com\/products\/pandito-ultra-light-dcp\/)\n  - [PANDOSCOPE®](https:\/\/www.insitutek.com\/products\/pandoscope\/)\n  - [Zorn AT 2.0 Asphalt Tester](https:\/\/www.insitutek.com\/products\/zorn-at-2-0-asphalt-tester\/)\n  - [MIT-SCAN-T3 Asphalt & Concrete Pavement Thickness Test](https:\/\/www.insitutek.com\/products\/mit-scan-t3-asphalt-concrete-thickness-test\/)\n  - [Tie Bar & Dowel Bar Alignment – Concrete](https:\/\/www.insitutek.com\/products\/tie-bar-alignment-concrete\/)\n- [Services We Provide](https:\/\/www.insitutek.com\/faq\/what-is-evd\/)\n  - [Sales](https:\/\/www.insitutek.com\/services\/product-sales\/)\n  - [Product Training](https:\/\/www.insitutek.com\/services\/product-training\/)\n  - [Rent \/ Lease](https:\/\/www.insitutek.com\/services\/rent-lease\/)\n  - [Calibration & Repairs](https:\/\/www.insitutek.com\/services\/calibration-repairs\/)\n  - [Impact Rolling \/ High Energy Impact Compaction (HEIC)](https:\/\/www.insitutek.com\/services\/impact-rolling-high-energy-impact-compaction\/)\n  - [Pavement Condition Assessment](https:\/\/www.insitutek.com\/services\/pavement-condition-assessment\/)\n  - [Bridge Deck and Structure Condition Assessment](https:\/\/www.insitutek.com\/services\/bridge-deck-and-structure-condition-assessment\/)\n  - [PANDOSCOPE® Rail Formation & Ballast Condition Assessment](https:\/\/www.insitutek.com\/services\/pandoscope-ballast-formation-condition-assessment\/)\n- [Blogs](https:\/\/www.insitutek.com\/blogs\/)\n- [Contact Us](https:\/\/www.insitutek.com\/contact-us\/)","attrs_readable_markdown":"Evd is the dynamic deformation modulus (also known as the dynamic deformation module, dynamic modulus of deformation, dynamic stiffness modulus, composite stiffness, effective stiffness or surface modulus). Modulus is the most accurate and independent means for judging deformation and, thus, a material’s level of compaction. Evd is used to measure bearing capacity and compaction quality for subsoil’s and subgrade materials, unbound base layers, granular layers, backfilling materials, soil stabilisation with lime, cold recycling materials and pavements, cycle tracks and footpaths.\n\nThe soil receives an impact of maximum force Fs transmitted through the fall of the drop weight onto a circular plate of radius r, which is assumed to be rigid. When the device is calibrated, the force is selected such that the maximum normal stress σ under the load plate is 0.1MN\/m2.\n\nTo calculate Evd, the deformability of the soil under a vertical load, as described above, with a settlement amplitude s (in mm) and the duration of impact ts:\n\nEvd (MN\/m2) = 1.5 x r x σ \/s\n\nFor the 10kg drop weight and 300mm diameter plate Evd = 22.5\/s  \n For the 15kg drop weight and 300mm diameter plate Evd = 33.75\/s","meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

27 days ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	0.9 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://www.insitutek.com/faq/what-is-evd/
Last Crawled	2026-03-10 03:02:59 (27 days ago)
First Indexed	2025-08-15 12:39:15 (7 months ago)
HTTP Status Code	200
Meta Title	What is Evd? - Insitutek
Meta Description	null
Meta Canonical	null
Boilerpipe Text	Evd is the dynamic deformation modulus (also known as the dynamic deformation module, dynamic modulus of deformation, dynamic stiffness modulus, composite stiffness, effective stiffness or surface modulus). Modulus is the most accurate and independent means for judging deformation and, thus, a material’s level of compaction. Evd is used to measure bearing capacity and compaction quality for subsoil’s and subgrade materials, unbound base layers, granular layers, backfilling materials, soil stabilisation with lime, cold recycling materials and pavements, cycle tracks and footpaths. The soil receives an impact of maximum force Fs transmitted through the fall of the drop weight onto a circular plate of radius r, which is assumed to be rigid. When the device is calibrated, the force is selected such that the maximum normal stress σ under the load plate is 0.1MN/m2. To calculate Evd, the deformability of the soil under a vertical load, as described above, with a settlement amplitude s (in mm) and the duration of impact ts: Evd (MN/m2) = 1.5 x r x σ /s For the 10kg drop weight and 300mm diameter plate Evd = 22.5/s For the 15kg drop weight and 300mm diameter plate Evd = 33.75/s
Markdown	[![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAvQAAAeAAQMAAACbmVElAAAAA1BMVEVHcEyC+tLSAAAAAXRSTlMAQObYZgAAAMlJREFUeNrtwTEBAAAAwqD1T20LL6AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA4GfQHgAB4KQCZAAAAABJRU5ErkJggg==)![](https://www.insitutek.com/wp-content/uploads/2025/06/Insitutek-Logo-Full-Colour-RGB-scaled.png)](https://www.insitutek.com/) [Skip to main content](https://www.insitutek.com/faq/what-is-evd/#ajax-content-wrap) [Close Search](https://www.insitutek.com/faq/what-is-evd/) [Insitutek](https://www.insitutek.com/) [search](https://www.insitutek.com/faq/what-is-evd/#searchbox) [Menu](https://www.insitutek.com/faq/what-is-evd/#slide-out-widget-area) - [Home](https://www.insitutek.com/) - [You](https://www.insitutek.com/you/) - [Us](https://www.insitutek.com/us/) - [Together](https://www.insitutek.com/together/) - [Contact](https://www.insitutek.com/contact-us/) - [search](https://www.insitutek.com/faq/what-is-evd/#searchbox) - [Menu](https://www.insitutek.com/faq/what-is-evd/#slide-out-widget-area) Insitutek # What is Evd? Evd is the dynamic deformation modulus (also known as the dynamic deformation module, dynamic modulus of deformation, dynamic stiffness modulus, composite stiffness, effective stiffness or surface modulus). Modulus is the most accurate and independent means for judging deformation and, thus, a material’s level of compaction. Evd is used to measure bearing capacity and compaction quality for subsoil’s and subgrade materials, unbound base layers, granular layers, backfilling materials, soil stabilisation with lime, cold recycling materials and pavements, cycle tracks and footpaths. The soil receives an impact of maximum force Fs transmitted through the fall of the drop weight onto a circular plate of radius r, which is assumed to be rigid. When the device is calibrated, the force is selected such that the maximum normal stress σ under the load plate is 0.1MN/m2. To calculate Evd, the deformability of the soil under a vertical load, as described above, with a settlement amplitude s (in mm) and the duration of impact ts: Evd (MN/m2) = 1.5 x r x σ /s For the 10kg drop weight and 300mm diameter plate Evd = 22.5/s For the 15kg drop weight and 300mm diameter plate Evd = 33.75/s - ### Previous PostWhat is the relationship between Evd and Ev2? - ### Next PostWhat different names is the PANDA® Variable Energy Dynamic Cone Penetrometer known as? ## Excel beyond the expected. ### Get in touch Ready to build better? Let’s talk about how we can support your next project, and where we can go from there. ## [Contact us](https://www.insitutek.com/contact-us/) ### Stay connected Join our community of like-minded industry professionals and receive insights from our visionary leader. ### Quick links [\[email protected\]](https://www.insitutek.com/cdn-cgi/l/email-protection#bad2dfd6d6d5fad3d4c9d3cecfcedfd194d9d5d7) [\+61 (0) 7 3054 0540](<tel:+61 7 3054 0540>) - [Linkedin](https://au.linkedin.com/company/insitutek) - [Youtube](https://www.youtube.com/c/Insitutek) - [Whatsapp](tel:+61%20404%20114%20751) [![](https://www.insitutek.com/wp-content/uploads/2025/06/Insitutek-Logo-with-Bcorp-white.png)](https://www.bcorporation.net/en-us/find-a-b-corp/company/insitutek/) [Share](https://www.insitutek.com/faq/what-is-evd/ "Share this") [Share](https://www.insitutek.com/faq/what-is-evd/ "Share this") [Share](https://www.insitutek.com/faq/what-is-evd/ "Share this") [Pin](https://www.insitutek.com/faq/what-is-evd/ "Pin this") Copyright © Insitutek Pty Ltd. All Rights Reserved. [Privacy Policy](https://www.insitutek.com/privacy-policy-3/) [Terms and Conditions](https://www.insitutek.com/website-terms-conditions-of-use/) [Policies and Procedures](https://www.insitutek.com/policies-and-procedures/) [Environmental Social Governance (ESG)](https://www.insitutek.com/environmental-social-governance-esg-reporting/) [Close Menu](https://www.insitutek.com/faq/what-is-evd/) - [Home](https://www.insitutek.com/) - [You](https://www.insitutek.com/you/) - [Us](https://www.insitutek.com/us/) - [Together](https://www.insitutek.com/together/) - [Contact](https://www.insitutek.com/contact-us/) - [How We Can Help](https://www.insitutek.com/faq/what-is-evd/) - [Ground Improvement – delivering more sustainable outcomes](https://www.insitutek.com/solutions/ground-improvement-delivering-more-sustainable-outcomes/) - [In Situ Testing – enabling you to make better informed timely decisions](https://www.insitutek.com/solutions/insitu-testing-enabling-you-make-better-informed-timely-decisions/) - [Compaction Control](https://www.insitutek.com/solutions/compaction-control/) - [Bearing Capacity](https://www.insitutek.com/solutions/bearing-capacity/) - [Site Investigation](https://www.insitutek.com/solutions/soil-and-site-investigation/) - [Geotechnical Drilling](https://www.insitutek.com/solutions/geotechnical-drilling/) - [Asphalt Pavement Non Destructive Testing (NDT)](https://www.insitutek.com/solutions/asphalt-pavement-non-destructive-testing-ndt/) - [Concrete Pavement Non Destructive Testing (NDT)](https://www.insitutek.com/solutions/concrete-pavement-non-destructive-testing-ndt/) - [Pavement Condition Assessment](https://www.insitutek.com/services/pavement-condition-assessment/) - [Bridge Deck and Structure Condition Assessment](https://www.insitutek.com/services/bridge-deck-and-structure-condition-assessment/) - [Rail Formation & Ballast Condition Assessment](https://www.insitutek.com/solutions/rail-formation-ballast-condition-assessment/) - [Our Products](https://www.insitutek.com/faq/what-is-evd/) - [Clay Soil Stabilisation – sustainable long-term ground improvement](https://www.insitutek.com/products/soil-stabilisation-terra-3000/) - [Light Weight Deflectometer](https://www.insitutek.com/products/light-weight-deflectometer/) - [Dynamic CBR](https://www.insitutek.com/products/dynamic-cbr/) - [Plate Load Test](https://www.insitutek.com/products/plate-load-test/) - [Intelligent Compaction](https://www.insitutek.com/products/intelligent-compaction/) - [Cone Penetration Test – CPT](https://www.insitutek.com/products/cone-penetration-test-cpt/) - [GRIZZLY® Dynamic Probing Super Heavy](https://www.insitutek.com/products/grizzly-dynamic-probing-super-heavy/) - [PANDA® Variable Energy DCP](https://www.insitutek.com/products/panda-instrumented-dcp/) - [eKODIAK® Multi-Mass Automated DCP](https://www.insitutek.com/products/ekodiak-multi-mass-automated-dcp/) - [PANDITO® Ultra-light DCP](https://www.insitutek.com/products/pandito-ultra-light-dcp/) - [PANDOSCOPE®](https://www.insitutek.com/products/pandoscope/) - [Zorn AT 2.0 Asphalt Tester](https://www.insitutek.com/products/zorn-at-2-0-asphalt-tester/) - [MIT-SCAN-T3 Asphalt & Concrete Pavement Thickness Test](https://www.insitutek.com/products/mit-scan-t3-asphalt-concrete-thickness-test/) - [Tie Bar & Dowel Bar Alignment – Concrete](https://www.insitutek.com/products/tie-bar-alignment-concrete/) - [Services We Provide](https://www.insitutek.com/faq/what-is-evd/) - [Sales](https://www.insitutek.com/services/product-sales/) - [Product Training](https://www.insitutek.com/services/product-training/) - [Rent / Lease](https://www.insitutek.com/services/rent-lease/) - [Calibration & Repairs](https://www.insitutek.com/services/calibration-repairs/) - [Impact Rolling / High Energy Impact Compaction (HEIC)](https://www.insitutek.com/services/impact-rolling-high-energy-impact-compaction/) - [Pavement Condition Assessment](https://www.insitutek.com/services/pavement-condition-assessment/) - [Bridge Deck and Structure Condition Assessment](https://www.insitutek.com/services/bridge-deck-and-structure-condition-assessment/) - [PANDOSCOPE® Rail Formation & Ballast Condition Assessment](https://www.insitutek.com/services/pandoscope-ballast-formation-condition-assessment/) - [Blogs](https://www.insitutek.com/blogs/) - [Contact Us](https://www.insitutek.com/contact-us/)
Readable Markdown	Evd is the dynamic deformation modulus (also known as the dynamic deformation module, dynamic modulus of deformation, dynamic stiffness modulus, composite stiffness, effective stiffness or surface modulus). Modulus is the most accurate and independent means for judging deformation and, thus, a material’s level of compaction. Evd is used to measure bearing capacity and compaction quality for subsoil’s and subgrade materials, unbound base layers, granular layers, backfilling materials, soil stabilisation with lime, cold recycling materials and pavements, cycle tracks and footpaths. The soil receives an impact of maximum force Fs transmitted through the fall of the drop weight onto a circular plate of radius r, which is assumed to be rigid. When the device is calibrated, the force is selected such that the maximum normal stress σ under the load plate is 0.1MN/m2. To calculate Evd, the deformability of the soil under a vertical load, as described above, with a settlement amplitude s (in mm) and the duration of impact ts: Evd (MN/m2) = 1.5 x r x σ /s For the 10kg drop weight and 300mm diameter plate Evd = 22.5/s For the 15kg drop weight and 300mm diameter plate Evd = 33.75/s
Shard	144 (laksa)
Root Hash	15816715209851515544
Unparsed URL	com,insitutek!www,/faq/what-is-evd/ s443