RFI - 098_Bennett Residence_Attunga Heights_Approval Issue E · MCU25/0042

ROOF DRAINAGE                                                                                                                                                                                                                   10000                                     600       900      600                                                          7000                                600                                 5446


NOTES:

All work to conform with Part MP 4.2 of the
Queensland Development Code (QDC)




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    3005
(Water Saving Targets).




                                                                                                                                                                                                                                                                                                                                                                                               6000mm setback




                                                                                                                                                                                                                                                                                                                                                                                                                 4500mm setback
Roof stormwater is to discharge to local
government requirements and approval.
Tank/s overflow and downpipes not
connected to rainwater tank/s to discharge




                                                                                                                           600




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    600
to interallotment drainage system/ to
nominated discharge points via bubbler
system/ to discharge to street channel system.


Based on assumed 5 minute rainfall intensity -
258mm/h 20 years recurrence interval.




                                                                                                                                                                                                                                                                                                     line of upper level walls under
                                                                                                                           5500
Gutters & downpipes shall be in accordance
with AS/NZS3500.5 domestic & Part 3.5.2, Vol 2
of the NCC.




                                                                                                                                                                                                                                                                                                                                                                           skylight
All downpipes to be 90mm/100mm U-PVC.
All gutters to be 150 Half Round Gutters
(7042mm² Cross section area).
Falls to be in accordance with clause 3.5.2.4,
Vol 2 of the NCC.

•     Effective roof catchment area (dwelling




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    13400
      only) 130 m²
•     Roof catchment per downpipe 50m²
•     Downpipes must not serve more than
      12m of gutter length for each downpipe
                                                                                                                                                                                                                                                                                                                                            skylights
•     Total rainfall intensity 130m² X 258mm/50 =
      670.8L/min
•     Stormwater pipes - 100 dia. Laid at 1 in
      100 minimum grade.
                                                                                                                                                                                                                                                                                                                                       Roof Catchment Area
                                                                                                                           7900




Downpipes are to be located where they will
not create a hazard to building users nor                                                                                                                                                                                                                                                                                                     130m²
impede window & door openings and the
like.                                                                                                                                                                                                                                                                                                                                       kliplok roofing
                                                                                                                                                                                                                                                                                                                                                   3.0°
 They are to be installed as close as
practicable to the supporting structure while
maintaining termite inspection clearances of
                                                                                                                                                            1500mm setback

                                                                                                                                                                             2000mm setback

                                                                                                                                                                                              2500mm setback




25mm. Downpipes are to be protected from
potential mechanical damage, be installed
no less than 100mm from electrical cables &
gas pipes & no less than 50mm from other                                                                                                                                                                                                                                                                              line of upper level walls under
services (AS3500.3.2 S4.11)
                                                                                                                           600




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    600
Downpipes are to service 12m maximum                                                                                                                                                                           2500mm setback
gutter length & be within 1.2m from each                                                                                                                                                                       2000mm setback
valley unless overflow is provided for (NCC




                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    2500
Vol2 7.4.5)                                                                                                                                                                                                    1500mm setback




                                                                                                                                                                                       Plan                                                                               600                                                                     8500                                        600
                                                                                                                                                                                        Upper Level Pitching                                1 : 100




                                                                                                                                                                                                                                                                                                                                                                     No.                    Description                               Date
                                                                                                                                            Project                                                                         Client                                 Drawing                                                                 Drawn by              C             Building Approval A                                26/03/2025                 Project number                  Scale at A3
                                                                                                                                            19 Attunga Heights                                                              Bennett Residence                      ROOF DRAINAGE                                                           DRH                   D             Building Approval B                                27/03/2025
                                                   dennishillarchitect                                                                                                                                                                                             PLAN                                                                                          E             Building Approval C                                14/04/2025
                                                                                                                                                                                                                                                                                                                                                                                                                                                                      065                       1 : 100

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                                                                                                                                                                                                                                                                                                                                                                 F
                                                                                                                                                                                                                                                                                                                                                                 G
                                                                                                                                                                                                                                                                                                                                                                               Building Approval D
                                                                                                                                                                                                                                                                                                                                                                               Building Approval E
                                                                                                                                                                                                                                                                                                                                                                                                                                  10/06/2025
                                                                                                                                                                                                                                                                                                                                                                                                                                  18/06/2025                         APRVL.09
Do not scale from drawings. Dimensions are to be checked on site prior to commencement of work. Discrepancies to be brought to the attention of the author. Any dimensions not nominated must be referred to the Architect for confirmation. The concepts and information contained in this document are the copyright of Architect. Use or copying of the document in whole or in part without the written permission of the Architect constitutes an infringement of copyright.      24/06/2025 8:44:11 AM