Highway: Highway Maintenance Materials
A Guide to Understanding HA 104
What is HA 104?
HA 104 is a specification that sets out procedures and
defines materials for the best possible performance of
manholes and gullies when being installed and maintained on
roads. Originally developed by the Highways Agency in 2002
it has now been adopted by DRD Roads Service, National Roads
Authority and the Department of Transport. The specification
applies to all classifications of roads throughout Ireland.
Why was HA 104 Introduced?
Research has shown that premature failure in the bedding
material is one of the main factors contributing to poor
performance of chamber tops and gully top installations. It
has been shown that conventional materials, procedures and
material specifications have become superseded by more
recent product developments, and results of research have
led to an improved specification for the bedding material;
HA 104.
With an ever increasing awareness of the need to ensure work
is carried out to the best possible performance and to
reduce the need to go back and reinstate collapsed road
furniture, the HA introduced a specification benchmark for
local authorities to work from.
Is HA 104 relevant to roads in Northern Ireland?
Yes, the DRD Roads Service adopted HA 104 in August 2002 and
it is to be applied to all roads including, motorways, dual
carriageways, trunk roads, A and B class roads.
Download:
What is HA 104?
Is HA 104 relevant to roads in Republic of Ireland?
Yes, the National Roads Authority adopted HA 104 in October
2009 and it is to be applied to all national roads
including, motorways, dual carriageways and trunk roads. In
December 2010 the Department of Transport adopted HA 104 for
all regional roads and works carried out by City and County
Councils.
By using a bedding mortar that meets the requirements set
out in chapter 6 of the specification. Emtek’s Envirobed
HA104 is the new generation high performance mortar that has
been developed in line with this, ensuring that you gain the
most effective and durable ironwork reinstatements that can
be easily applied and quickly re-opened to traffic.
Watch the HA 104 Demo Video’s
Step 1 - Break out the failed ironwork
Step 2 - Prepare the chamber area
Step 3 - Check levels
Step 4 - Mix HA 104 compliant Bedding Mortar
Step 5 - Apply HA 104 compliant Bedding Mortar to chamber
Step 6 – Place manhole frame on HA 104 compliant Bedding
Mortar and tamp level
Step 7 - After 15 minutes the HA 104 compliant Mortar has
set
