Trussed Rafters or Roof Trusses are
specified for the majority of roofs in Ireland today. The
trussed rafter is an individually designed component, engineered
to provide a structural frame for the support of roof or similar
structures and have proved to be an efficient, safe and economical
method for supporting roofs since their introduction in 1964.
Trussed Rafters must only be manufactured by specialized timber
engineering companies.
DTE are experienced roof designers and manufacturers and are
therefore in an ideal position to assist in achieving affordable
solutions throughout the building industry.
DTE use state-of-the-art ‘Wolf
Systems’ software which provide the most advanced timber
roof design, manufacturing and management software available.
The whole roof is designed and specified using this state-of-the-art
computer aided technology. Trusses are designed in accordance
with the current Code of Practice, which is IS193:1986 and
the relevant Building Regulations.
DTE are one of Irelands leading Roof
Truss manufacturers and are approved by the National Standards
Authority of Ireland. Our position in the market place ensures
we can offer our customers a ‘quality product’
along with valuable ‘consumer confidence’.
Our trussed rafters are pre-fabricated from high quality,
stress graded timbers and joined together with steel nail-plate
fasteners, it is a flexible, practical and fully engineered
solution to roofing requirements. It is economical, as there
can be up to 40% less timber used than in a traditionally
formed roof and competitively priced, can reduce labour cost
on site due to the amount of pre-fabrication.
Standard trusses can be designed up to max span of 11 metres
in 35mm thick timber, and 16 metres for 47mm thick timber.
It is more economical to standardize
the range of pitches between 15 & 40 degrees, however,
trusses may be supplied outside this range. Care should be
taken when specifying because deflection problems may arise
with for example very shallow pitches.
Trusses are usually spaced at 600mm,
but can also be positioned at 400mm to support heavier loads.
DTE uses timber which is kiln dried
and stress graded, which complies with current building regulations.
Trusses may be treated with one of the new waterborne solutions,
or with non-corrosive spirit based organic solvents.
(Copper Chrome Arsenate and similar treatments, are not recommended).
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