Pyrite

Pyrite Resolution Board Statistics: Fourth Update

Pyrite Resolution Board Statistics

The Pyrite Resolution Board (PRB) has produced eight reports since the Pyrite Remediation Scheme was introduced in February 2014. Statistics are provided on the PRB website and in recent news articles. See statistics below and follow links for original data.

Statistics as of 14th July 2016:

  • 1248 received applications
  • 161 applications at Validation stage
  • 77 applications at Verification stage
  • 597 dwellings included in the scheme
  • 358 dwelling remediated
  • 55 applications refused

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Statistics reporting in the eighth quarterly report of the PRB:

26th February 2014 to 4th January 2016:

  • 995 completed applications
  • 37 developments containing multiple applications
  • 63 single site applications
  • 809 Validated applications
  • 744 applications included in scheme
  • 163 dwellings completed remediation
  • Works contracts in place for 184 dwellings
  • Tendering underway for 104 dwellings
  • Remedial Works Plans under preparation for 246 dwellings
  • 17 applications refused
  • No outstanding appeals
  • PRB received a total of €484,000 from liable parties in 2015

Statistics reporting in the seventh quarterly report of the PRB:

26th February 2014 to 2nd October 2015:

 

  • 887 completed applications
  • 33 developments containing multiple applications
  • 55 single site applications
  • 729 Validated applications
  • 660 applications included in scheme
  • 98 dwellings completed remediation
  • Works contracts in place for 108 dwellings
  • Tendering underway for 8 projects (219 dwellings)
  • Remedial Works Plans under preparation for 3 projects (75 dwellings)
  • 12 applications refused
  • 1 appeal decision pending

 


Statistics reported in the sixth quarterly report of the PRB:

26th February 2014 to 3th June 2015:

  • 763 completed applications
  • 33 developments containing multiple applications
  • 49 single site applications
  • 637 Validated applications
  • 520 applications included in scheme
  • Pilot project of 5 dwellings remediated (September to November 2014)
  • 16 dwellings completed remediation in 2015
  • Works contracts in place for 132 dwellings
  • Tendering underway for 65 dwellings
  • Remedial Works Plans under preparation for 163 dwellings
  • Anticipated 236 dwellings to be remediated in 2015
  • 11 dwellings refused from scheme (five have appealed)
  • In 5 cases, agreement has reached with builders/developers regarding contribution towards cost of remediation of 67 dwellings

Statistics reported by the Pyrite Resolution Board for 7th June 2015:

  • Total 763 applications (significant pyritic damage)
  • 115 applications in Validation Stage
  • 117 applications at Verification Stage
  • 520 applications included in the scheme
  • 8 applications refused

Statistics reported by the Pyrite Resolution Board for 1st May 2015:

  • Total 712 applications (significant pyritic damage)
  • 107 applications in Validation Stage
  • 97 applications at Verification Stage
  • 508 applications included in the scheme
  • 7 applications refused

Statistics reported in the fifth quarterly report of the PRB:

26th February 2014 to 31st March 2015:

  • 697 completed applications
  • 33 developments containing multiple applications
  • 49 single site applications
  • 583 Validated applications
  • 496 applications included in scheme
  • Pilot project of 5 dwellings remediated (September to November 2014)
  • Remediation of 20 dwellings commenced in February 2015
  • Contractors appointed to 72 dwellings in March 2015
  • Testing underway for 63 dwellings
  • Remedial Works Plans under preparation for 179 dwellings
  • 11 dwellings refused from scheme (three have appealed)

Statistics reported in the fourth quarterly report of the PRB:

26th February 2014 to 1st January 2015:

  • 622 completed applications
  • 27 developments containing multiple applications
  • 47 single site applications
  • 483 Validated applications
  • 321 applications included in scheme
  • Average 3 applications per week since 3rd quarterly report
  • 2 appeals in process
  • Pilot project of 5 dwellings remediated (September to November 2014)

The Irish Independent reported an update on the Pyrite Remediation Scheme statistics for the end of January 2015:

  • Total 632 applications
  • 485 applications Validated
  • 328 applications included in scheme
  • Work at tender stage for 73 dwellings
  • Work completed on 5 dwellings

Statistics reported by the Pyrite Resolution Board for 31st October 2014:

  • Total 590 applications
  • 151 applications in Validation Stage
  • 231 applications at Verification Stage
  • 208 applications included in the scheme

Statistics reported by the Pyrite Resolution Board for 7th October 2014:

  • Total 575 completed applications and 36 commenced applications
  • 144 applications in Validation Stage
  • 220 applications in Verification Stage
  • 2 Verified applications awaiting decision
  • 206 applications included in the scheme
  • Remediation contracts in place for 5 dwellings
  • 3 applications not considered

Statistics reported by the Pyrite Resolution Board for 4th July 2014:

  • Total 521 completed applications and 35 commenced applications
  • 312 applications in Validation Stage
  • 127 applications in Verification Stage
  • 27 Verified applications awaiting decision
  • 52 applications included in the scheme
  • 3 applications not considered

Statistics reported by the Pyrite Resolution Board for 15th April 2014:
  • 418 completed applications and 146 commenced applications
  • 84 applications Validated and referred to Verification Stage
Read the rest

USA: Burying 38,000 m3 of pyritic rock

PenDOtt Route 2001 project

State Route 2001, in Pike County, Pennsylvania, is undergoing considerable improvements. Back in March 2014, the Pocono Record (08.03.14) reported that a major phase of the improvement in Lehman Township was delayed due to the identification of pyritic rock along the route alignment. Quoting from the article:

“Bore samples taken two years ago for this project did not initially reveal a pyrite problem, but recent borings did show it in various places along the entire project area, which runs from where the last phase ended at Little Egypt Road to Oakridge Road.”

In July 2014, PyriteProblem.com reported on how engineers from the Pennsylvania Department of Transportation (PennDOT) were attempting to determine how much pyrite was present and how to mitigate the problem.… Read the rest

Dr A Brian Hawkins: Pyrite research compilation

Dr A Brian Hawkins

Dr Brian Hawkins, a former Reader in Engineering Geology at the University of Bristol and independent consultant engineering geologist, passed away in January 2016. A remembrance article for Dr Hawkins can be found at the University of Bristol news pages (here).

Research into the engineering implications of pyrite oxidation and sulfur-species

Since at least the 1980s, Dr Hawkins was involved with the examination of, and research into, cases of pyrite heave. He published two books and over 20 papers on the topic of pyrite oxidation and sulfur-species in geological materials.… Read the rest

Pyrite Resolution Board Statistics: Third Update

Pyrite Resolution Board Statistics

The Pyrite Resolution Board (PRB) has produced eight reports since the Pyrite Remediation Scheme was introduced in February 2014. Further statistics are provided on the PRB website and in recent news articles. See statistics below and follow links for original data.

Statistics reporting in the eighth quarterly report of the PRB:

26th February 2014 to 4th January 2016:

  • 995 completed applications
  • 37 developments containing multiple applications
  • 63 single site applications
  • 809 Validated applications
  • 744 applications included in scheme
  • 163 dwellings completed remediation
  • Works contractors in place for 184 dwellings
  • Tendering underway for 104 dwellings
  • Remedial Works Plans under preparation for 246 dwellings
  • 17 applications refused
  • No outstanding appeals
  • PRB received a total of €484,000 from liable parties in 2015

 

Statistics reporting in the seventh quarterly report of the PRB:

Report not available on the PRB website.… Read the rest

European Court gives opinion in James Elliott case

European court of justice opinion delivered

The Advocate General of the European Court of Justice, Campos Sanchez-Bordona has delivered an opinion on Case C-613/14 (James Elliott Construction Ltd v Irish Asphalt Ltd). The Opinion was given in response to the request for a preliminary ruling from the Supreme Court of Ireland. The Opinion was delivered on 28/01/2016. The full text of the Opinion and the conclusions can be read by clicking here.

Interpretation and implications

An excellent summary of the James Elliott Construction Ltd v Irish Asphalt Ltd case can be found here on the EU Law Radar website.… Read the rest

Research Paper: Use of a granular interface in construction over pyritic ground

Use of a granular interface over pyritic ground

Czerewko and Cross (AECOM) have published a paper on the use of a granular construction interface to separate road pavements from underlying pyritic subgrade. The authors consider case studies and the implications for road construction where such an interface has and has not been used.

The paper, titled “Benefits of a granular construction interface in highway construction over pyritic subgrades for mitigating against deleterious ground effects” follows a prior case history publication by M. Czerewko on the construction of the A46, whereby pyritic subgrade extended over much of the road scheme:

Czerewko, M.A., Cross, S.A., Dimelow, P.G., and Saadvandi, A.… Read the rest

Research Paper: Identification of pyrite induced heave

Pyrite Induced Heave

Taylor, Cripps and Clarke (University of Sheffield) have published a paper on the identification of pyrite induced heave using chemical and structural assessments. The authors consider the use of chemical and structural assessments to determine whether pyritic heave caused structural damage in a number of case studies.

The paper, titled “The identification of pyrite induced foundation heave by chemical and structural assessments” follows prior research on the in-situ investigation of pyritic fill by the authors:

Taylor, A.J., Cripps, J.C., and Clarke, S.D. (2015). The effect of temperature and moisture content on the behaviour of pyritic fill: development of an in situ monitoring system.… Read the rest

Research Paper: Granular interface over pyritic subgrade

Czerewko and Cross (AECOM) have published a paper on the use of a granular construction interface to separate road pavements from underlying pyritic subgrade. The authors consider case studies and the implications for road construction where such an interface has and has not been used.

The paper, titled “Benefits of a granular interface over pyritic subgrades” follows a prior case history publication by M. Czerewko on the construction of the A46, whereby pyritic subgrade extended over much of the road scheme:

Czerewko, M.A., Cross, S.A., Dimelow, P.G., and Saadvandi, A. (2011). Assessment of pyritic Lower Lias mudrocks for earthworks.… Read the rest

Case Study: Pyrite in “Chinese Drywall”

Chinese drywall

According to the Wikipedia page on the topic, Chinese Drywall refers to “…an environmental health issue involving defective drywall manufactured in China and imported to the United States starting in 2001”. Drywall is also known as plasterboard and is comprised predominantly of gypsum plaster.

problems and potential cause

According to the Construction Lawyers Blog:

“Most of the homes that have Chinese drywall were built between 2001 and 2008”

“Testing of Chinese drywall has found unusually high instances of pyrite.”

“There is speculation that the pyrite oxidation results in sulfur compounds being released by the drywall during periods of high heat and humidity.”

“Reports show that homeowners typically complain of corroding copper in their homes, and a rotten egg odor emanating from copper surfaces that, in turn, turn black and exhibit a powdery ash type substance. 

Read the rest

Uses of pyrite: historic and modern

Pyrite is the cause of many problems in engineering, but in the past (and more recently) it has found a number of uses. This post considers some of the historical and present uses of pyrite. Links to references are included where further information can be found. This post is frequently updated with new technologies, so please check back regularly.

Historic uses of pyrite

Ignition source

In the 16-17th centuries, pyrite was used as a source of ignition in early guns. According to (Willbanks 2004), the “wheel lock” weapon was invented in Germany around 1517.… Read the rest