Q, Is there a maximum post height.
A, EN 12767 states that you should test the tallest mast with the largest sign area. Therefore any product taller than the tested height does not comply with EN 12767. According to the UK's Highways Agency any product taller than the tested item will require a Risk Assessment to be carried out by the designer to determine its suitability.
Q, What wind loadings should I use
A,
Table NA.2 of BS.EN.12899-1:2007 states that for Wind Load EITHER design to BS.EN.1991-1-4 using the 10minute mean wind reference speed appropriate to the location of the sign, taken from the national wind map (shown in BS.EN.1991-1-4 UK National Annex which is in preparation) and adjusted for altitude. OR use the appropriate wind load value taken from the table, which has been calculated using BS.EN.1991-1-4.
Q, Is there a minimum sign mounting height
A, EN 12767 gives a minimum mounting height of 1.8m to the underside of the sign (2m to the first channel). According to the UK's Highways Agency any sign mounted lower than this will require a Risk Assessment to be carried out by the designer to determine its suitability.
Q, What is the minimum post spacings.
A,
To comply with EN 12767 there is a requirement to ensure a 1.5m gap at an impact angle of 20 degress which equates approximately to a 1.6m clear opening. Many software packages don't take into account the size of the post and provide inaccurate information.
A,
Yes. Of course being aluminium it requires no corrosion protection but if a coating is required for aesthetic purposes we would recommend powder coating.
Q, Can HIMAST have lighting or other equipment attached
A,
Yes. We can design and manufacture any bracketry requirements and as the post is hollow power cables are hidden from view within the section.
A,
EN 12767 sets test criteria for the evaluation of support structures. The national annex requires any steel sign support greater than 89mm dia. with a 3.2mm wall thickness or equivalent bending capacity to either be passively safe or protected by safety barrier.
Q, What is third party certification
Q, Does a product have to be tested to become passive
A,
This was set up by the UK Highways Agency because the UK had not implemented CE marking. Third party certification was the only way of allowing UK manufacturers to put something on the market without introducing another set of testing. Third part certification only allows for product to be sold in the UK. When the UK signs up to CE marking third party certification will be superseded.
Q, What competency is required to carry out third part certification.
A,
None. Varley and Gullivers HIMAST was certified by Arup Consulting Engineers.
Q, Is there a maximum post height.
A, EN 12767 states that you should test the tallest mast with the largest sign area. Therefore any product taller than the tested height does not comply with EN 12767. According to the UK's Highways Agency any product taller than the tested item will require a Risk Assessment to be carried out by the designer to determine its suitability.
Q, Is there a minimum sign mounting height
A, EN 12767 gives a minimum mounting height of 1.8m to the underside of the sign (2m to the first channel). According to the UK's Highways Agency any sign mounted lower than this will require a Risk Assessment to be carried out by the designer to determine its suitability.
Q, What wind loadings should I use
A,
Table NA.2 of BS.EN.12899-1:2007 states that for Wind Load EITHER design to BS.EN.1991-1-4 using the 10minute mean wind reference speed appropriate to the location of the sign, taken from the national wind map (shown in BS.EN.1991-1-4 UK National Annex which is in preparation) and adjusted for altitude. OR use the appropriate wind load value taken from the table, which has been calculated using BS.EN.1991-1-4.
Q, What is the minimum post spacings.
A,
To comply with EN 12767 there is a requirement to ensure a 1.5m gap at an impact angle of 20 degress which equates approximately to a 1.6m clear opening. Many software packages don't take into account the size of the post and provide inaccurate information.
A,
Yes. Of course being aluminium it requires no corrosion protection but if a coating is required for aesthetic purposes we would recommend powder coating.
Q, Can HIMAST have lighting or other equipment attached
A,
Yes. We can design and manufacture any bracketry requirements and as the post is hollow power cables are hidden from view within the section.
Compliance with EN 12767 does not ensure products are passively safe.
Why, because there is no requirement to have support structures tested at an approved test centre. Such a test facility can undertake the test regime, provide a report to confirm compliance with the relevant standard and provide a letter of conformity. Where is the credibility. If you took your car for an MOT at an unlicensed test facility it would not be legal. Test centres that are approved for carrying out crash testing such as
MIRA
are accredited to a recognised international standard. Accreditation demonstartes technical competence and the operation of a qulaity management system and is subject to continuing conformity. This situation can be made even worse where a Notified Body issues a
CE Mark
for the tested product. This then allows the product owner to sell its systems across Europe. A Notified Body has the authority to determine the suitability of the test facility without carrying out all the checks that an accredited facility is subject to.
Varley and Gullivers HiMAST was tested at MIRA
