Page 17 - Surveyor 50.2 2015
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Adi Irfan Che Ani1, Ahmad Sairi2, Mohd Ikmal Fitri Maruzuki3, Mohd Zulhanif Abd Razak4, Hafsah Yahaya4
1Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia
2Building Control Department, Kajang Municipal Council, Selangor
3Faculty of Electrical Engineering, Universiti Teknologi MARA Pulau Pinang
4Hytech Consultancy, Malaysia
Surveying the Condition of a
Selected Flat Roof for Possible
Water Ponding Defect
Water ponding on a flat roof can slowly weaken the roof structure. As it is one of the
main sources of moisture problems in buildings, it has become an important issue that
should be addressed immediately. This study was conducted to identify the potential
location of water ponding and its possible causes on an academic building located
in Penang, Malaysia. The selected flat roof was built from concrete slab. Data were
collected by conducting a building survey (visual inspection) on the flat roof surface of
the building. Then a pictorial and written report was produced to facilitate the analysis.
There are 12 points of rainwater downpipes (RWDP) that have been identiļ¬ed as
potential locations of water ponding. The result shows that there are three criticality
levels of water ponding, namely, low, medium, and high. From 12 RWDP points, two
are categorized as having a high criticality level. The possible cause of water ponding
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