EN 1317

Test	Impact angle km/h	Impact angle degrees	Total vehicle mass kg	Type of vehicle
TB 11	100	20	900	Car
TB 21	80	8	1 300	Car
TB 22	80	15	1 300	Car
TB 31	80	20	1 500	Car
TB 32	110	20	1 500	Car
TB 41	70	8	10 000	Rigid HGV
TB 42	70	15	10 000	Rigid HGV
TB 51	70	20	13 000	Bus
TB 61	80	20	16 000	Rigid HGV
TB 71	65	20	30 000	Rigid HGV
TB 81	65	20	38 000	Articulated HGV

Containment levels	Acceptance test
Low angle containment T1 T2 T3	TB 21 TB 22 TB 41 and TB 21
Normal containment N1 N2	TB 31 TB 32 and TB 11
Higher containment H1 H2 H3	TB42 and TB 11 TB 51 and TB 11 TB 61 and TB 11
Very high containment H4a H4b	TB 71 and TB 11 TB 81 and TB 11

EN 1317

EN 1317, IRRRS & BS 6779

Bridge Parapets are designed to provide levels of containment that limit penetration of errant vehicles, and to protect others in the vicinity by redirecting vehicles on to a path as close as possible to the line of the parapet. Currently there are 3 standards:-

BS 6779 has been used for around 20 years and has proven itself over time to be an all encompassing document. The standard sets out defined criteria for both testing requirements and workmanship standards of Bridge Parapets. BS EN 1317 covers all Road Restraint Systems including Safety Fences. The big difference between BS 6779 and BS EN 1317 apart from the coverage of products is that BS EN 1317 is a performance based standard. This basically means that the standard is focused on the performance of a product and not the defined manufacturing and quality controls necessary to ensure repeatable performance. Workmanship standards and quality controls are now determined by the manufacturer. Due to the interim transition between BS 6779 to BS EN 1317 a document known as IRRRS (Interim Requirements for Road Restraint Systems) has been published. This document specifies all the systems that the Highways Agency have endorsed as being acceptable for use on the roads until BS EN 1317 is fully utilised. At this time manufacturers have until April 2005 to have a validated system to BS EN 1317.

European Standard BS EN 1317
Beware of compliant products that could fail in real life situations

EN 1317 draft and the new TD 19/06 document show the way to safety

VGAN 500

Aluminium
N1 W2 parapet successfully tested in accordance with EN 1317

VGSN 500

Steel N1 W1 parapet successfully tested in accordance with EN 1317

VGAN 1000

Aluminium
N2 W2 parapet successfully tested in accordance with EN 1317

VGSN 1000

Steel N2 W1 parapet successfully tested in accordance with EN 1317

VGSH 2000

Steel H2 W3 parapet successfully tested in accordance with EN 1317

V6GUARD

Steel H4a
parapet successfully tested in accordance with EN 1317

Building A Safer Future

For a Presentation on

BS EN 1317
contact
sales@v-and-g.co.uk

Varley and Gulliver Ltd