Re: [PSES] Seismic requirements- Euro Machinery Directive
Hi! Sad enough to say, Italy regularly undergoes earthquakes with casualties and/or damages to structures with a period of about 10 to 20 years. That without forgetting that Greece is also a EU member. Kind regards Canio Dichirico ESO www.eso.orghttp://www.eso.org Germany P.S. Mt Aetna has never moved from Sicily :) From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: 2014 November 25 01.45 To: EMC-PSTC@listserv.ieee.org Subject: Re: [PSES] Seismic requirements- Euro Machinery Directive Mike, Even tho Mt Aetna at Pompeii still erupts regularly, it doesn't seem to be enuf to get Italy on the earthquake map. :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.orgmailto:p.perk...@ieee.org _ _ _ _ _ Italy still gets quakes on a regular basis. Mike Sherman Graco Inc. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.orgmailto:emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe)http://www.ieee-pses.org/list.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.orgmailto:sdoug...@ieee.org Mike Cantwell mcantw...@ieee.orgmailto:mcantw...@ieee.org For policy questions, send mail to: Jim Bacher j.bac...@ieee.orgmailto:j.bac...@ieee.org David Heald dhe...@gmail.commailto:dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Seismic requirements- Euro Machinery Directive
Some of the product specific standards include requirements for protection against siesmic effects, although I don’t know of any which are harmonised under the Machinery Directive. Probably the one closest is: BS ISO 11031. Cranes. Design principles for seismic load” which is still a draft (12/30269745 DC). Purchaseable from BSI for GBP20. I’ve just had a quick look at it, and it contains quite a lot of maths, but it also gives risk factors for different territories worldwide. I’d say it’s probably a good start for answering the question you asked (and since it’s a draft, it’s cheap!). I’m not sure whether or not I agree with Lauren that the MD does not require you to consider siesmic effects. What I do know is that it’s wrong to think that just because the risk is very low in places like the UK then you never need to do anything about earthquake protection.* If you are designing serious infrastructure (rail, power stations etc) then earthquake risk definitely needs to be on your radar. Nick. *note: not that I’m accusing you of this! On 24 Nov 2014, at 21:37, Pete Perkins 0061f3f32d0c-dmarc-requ...@ieee.org wrote: ok group, I'm dealing with a large machine which, by design, seems top-heavy. The issue of stability in an active seismic environment has been raised. Are there any specific requirements or guidance in Euro standards pertaining to seismic stability? :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Seismic requirements- Euro Machinery Directive
From the MD Annex I 1.3.1. Risk of loss of stability Machinery and its components and fittings must be stable enough to avoid overturning, falling or uncontrolled movements during transportation, assembly, dismantling and any other action involving the machinery. If the shape of the machinery itself or its intended installation does not offer sufficient stability, appropriate means of anchorage must be incorporated and indicated in the instructions. I'd interpret this to apply to seismic stability if that could be a concern. -Dave -Original Message- From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: Monday, November 24, 2014 4:37 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Seismic requirements- Euro Machinery Directive ok group, I'm dealing with a large machine which, by design, seems top-heavy. The issue of stability in an active seismic environment has been raised. Are there any specific requirements or guidance in Euro standards pertaining to seismic stability? :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Seismic requirements- Euro Machinery Directive
Dave, We're familiar with these usual stability requirements and the mechanical team is confident the equipment is adequate for these circumstances. The additional questions arise from direct seismic action and the additional forces developed during such an event. It doesn't seem to me that the Euro Zone is particularly active from the seismic point of view and we've not run into this issue before but are doing our due diligence here to ensure that no stone is left unturned. The USGS Seismic history of the earth 1900-2014 website doesn't even include a reporting zone for Europe. So maybe this isn't an issue for the MD. :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org _ _ _ _ _ From the MD Annex I 1.3.1. Risk of loss of stability Machinery and its components and fittings must be stable enough to avoid overturning, falling or uncontrolled movements during transportation, assembly, dismantling and any other action involving the machinery. If the shape of the machinery itself or its intended installation does not offer sufficient stability, appropriate means of anchorage must be incorporated and indicated in the instructions. I'd interpret this to apply to seismic stability if that could be a concern. -Dave -Original Message- From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: Monday, November 24, 2014 4:37 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Seismic requirements- Euro Machinery Directive ok group, I'm dealing with a large machine which, by design, seems top-heavy. The issue of stability in an active seismic environment has been raised. Are there any specific requirements or guidance in Euro standards pertaining to seismic stability? :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Seismic requirements- Euro Machinery Directive
Hi Pete: I've never run across a seismic requirement for the EU. If for some reason you want to apply some seismic tests as part of your safety evaluation, the telecom industry here is the USA includes seismic requirements in Telcordia standard GR-63. I suspect that there may be some candidate MIL specs as well. Joe Randolph Telecom Design Consultant Randolph Telecom, Inc. 781-721-2848 (USA) j...@randolph-telecom.com http://www.randolph-telecom.com -Original Message- From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: Monday, November 24, 2014 4:37 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Seismic requirements- Euro Machinery Directive ok group, I'm dealing with a large machine which, by design, seems top-heavy. The issue of stability in an active seismic environment has been raised. Are there any specific requirements or guidance in Euro standards pertaining to seismic stability? :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Seismic requirements- Euro Machinery Directive
Pete, I do not think seismic stability is in scope of the MD concerns, nonetheless for EU seismic concerns take a look at EN 1998-1: Eurocode 8: Design of structures for earthquake resistance - Part 1: General rules, seismic actions and rules for buildings and consider the requirements for non-structural elements of buildings. It is a complex topic. Enjoy! Regards, Lauren Crane KLA-Tencor -Original Message- From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: Monday, November 24, 2014 4:52 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Seismic requirements- Euro Machinery Directive Dave, We're familiar with these usual stability requirements and the mechanical team is confident the equipment is adequate for these circumstances. The additional questions arise from direct seismic action and the additional forces developed during such an event. It doesn't seem to me that the Euro Zone is particularly active from the seismic point of view and we've not run into this issue before but are doing our due diligence here to ensure that no stone is left unturned. The USGS Seismic history of the earth 1900-2014 website doesn't even include a reporting zone for Europe. So maybe this isn't an issue for the MD. :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org _ _ _ _ _ From the MD Annex I 1.3.1. Risk of loss of stability Machinery and its components and fittings must be stable enough to avoid overturning, falling or uncontrolled movements during transportation, assembly, dismantling and any other action involving the machinery. If the shape of the machinery itself or its intended installation does not offer sufficient stability, appropriate means of anchorage must be incorporated and indicated in the instructions. I'd interpret this to apply to seismic stability if that could be a concern. -Dave -Original Message- From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: Monday, November 24, 2014 4:37 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Seismic requirements- Euro Machinery Directive ok group, I'm dealing with a large machine which, by design, seems top-heavy. The issue of stability in an active seismic environment has been raised. Are there any specific requirements or guidance in Euro standards pertaining to seismic stability? :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats
Re: [PSES] Seismic requirements- Euro Machinery Directive
Italy still gets quakes on a regular basis. Mike Sherman Graco Inc. - Original Message - From: Lauren Crane lauren.cr...@kla-tencor.com To: EMC-PSTC EMC-PSTC@LISTSERV.IEEE.ORG Sent: Monday, November 24, 2014 4:58:07 PM Subject: Re: [PSES] Seismic requirements- Euro Machinery Directive Pete, I do not think seismic stability is in scope of the MD concerns, nonetheless for EU seismic concerns take a look at EN 1998-1: Eurocode 8: Design of structures for earthquake resistance - Part 1: General rules, seismic actions and rules for buildings and consider the requirements for non-structural elements of buildings. It is a complex topic. Enjoy! Regards, Lauren Crane KLA-Tencor -Original Message- From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: Monday, November 24, 2014 4:52 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Seismic requirements- Euro Machinery Directive Dave, We're familiar with these usual stability requirements and the mechanical team is confident the equipment is adequate for these circumstances. The additional questions arise from direct seismic action and the additional forces developed during such an event. It doesn't seem to me that the Euro Zone is particularly active from the seismic point of view and we've not run into this issue before but are doing our due diligence here to ensure that no stone is left unturned. The USGS Seismic history of the earth 1900-2014 website doesn't even include a reporting zone for Europe. So maybe this isn't an issue for the MD. :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org _ _ _ _ _ From the MD Annex I 1.3.1. Risk of loss of stability Machinery and its components and fittings must be stable enough to avoid overturning, falling or uncontrolled movements during transportation, assembly, dismantling and any other action involving the machinery. If the shape of the machinery itself or its intended installation does not offer sufficient stability, appropriate means of anchorage must be incorporated and indicated in the instructions. I'd interpret this to apply to seismic stability if that could be a concern. -Dave -Original Message- From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org] Sent: Monday, November 24, 2014 4:37 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: [PSES] Seismic requirements- Euro Machinery Directive ok group, I'm dealing with a large machine which, by design, seems top-heavy. The issue of stability in an active seismic environment has been raised. Are there any specific requirements or guidance in Euro standards pertaining to seismic stability? :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p
Re: [PSES] Seismic requirements- Euro Machinery Directive
Mike, Even tho Mt Aetna at Pompeii still erupts regularly, it doesn't seem to be enuf to get Italy on the earthquake map. :) br, Pete Peter E Perkins, PE Principal Product Safety Engineer PO Box 23427 Tigard, ORe 97281-3427 503/452-1201 fone/fax p.perk...@ieee.org _ _ _ _ _ Italy still gets quakes on a regular basis. Mike Sherman Graco Inc. - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
Re: [PSES] Seismic requirements- Euro Machinery Directive
In message 003c01d00839$3ce78bb0$b6b6a310$@cs.com, dated Mon, 24 Nov 2014, Pete Perkins 0061f3f32d0c-dmarc-requ...@ieee.org writes: It doesn't seem to me that the Euro Zone is particularly active from the seismic point of view and we've not run into this issue before but are doing our due diligence here to ensure that no stone is left unturned. The USGS Seismic history of the earth 1900-2014 website doesn't even include a reporting zone for Europe. Southern Italy is prone to seismic effects. Temblors do occur, but there are also longer-term ground movements along the east coast that have interesting effects on reinforced concrete floors. Maybe the USGS doesn't know that. (;-) -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to emc-p...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas sdoug...@ieee.org Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: dhe...@gmail.com
