Using external roof space to upgrade HVAC services
A
Roof-Pro product story
Edited by the Buildingtalk editorial team
Oct 17, 2008
Roof-Pro Systems design and manufacture bespoke support systems to utilise external roof space to facilitate building services upgrades.
Case Study of the recent successful project at the Victory Services Club in Marble Arch where Roof-Pro Systems enable building services to be upgraded without compromising the roof, either by overloading the deck or penetrating the waterproofing.
During consultancy for the building services, appointed engineers Hulley and Kirkwood became aware that they would have to utilise the external space on the roof to house a range of services equipment including an Air Handling Unit (AHU), seven VRV condensers and the associated runs of cable tray and ducting.
The situation was far from straight forward with the project complicated by a tight roof space and impediments including roof lights, redundant upstands and a light weight concrete roof deck which required managing the load on the roof to a maximum action of 2.5kN/m2..
In order to overcome these issues Roof-Pro were commissioned to engineer a professional support solution to support the building services without compromising the roof, either by overloading the deck or penetrating the waterproofing.
The site restrictions influenced heavily on the design.
The service locations were divided into two areas on the roof, one area for the support of the AHU and the other for the support of the condensers.
Due to very limited space both service areas had to be located above roof lights measuring 2.6mt wide x 6mt long x 1.1mt high.
The Roof Pro design team engineered a support frame that spanned over the roof lights at a height of 1.3mt.
Assessments conducted by Roof-Pro engineers specified the use of steel channels suitable for supporting the services over large spans and braced punch box section steels for upright support.
The need for maintenance access was incorporated into the design by the combining of an access platform and cat ladders with the services in both locations.
Come the day of installation, the off site fabricated framework was easily and quickly erected on site, with each support base positioned without the need to penetrate the roof or form roofing details.
Installation was carefully co-ordinated with the project team to ensure that all design factors were considered.
With constant liaison with the structural engineers at FJ Samuely on the designs, and co-ordination of activities with the main contractors Fileturn and project managers Workman, the project resulted in a complete success for the project team and client.
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