Appendix C - Engineering Report

 

 

 

 

 

  
  
   

 

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EXISTING WELL-DEFINED GULLY. REFER TO
DRAWING P08 FOR FLOW CALCULATIONS

 

    
 
 
    

100 DIA GROUTED ROCK PITCHING (300mm THICK) a
ON GEOFABRIC. FLOW DISSIPATION AND SCOUR 2
PAD TO EXTEND TO EXISTING GULLY. oa

       

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SWALE DRAIN.

_-~~~’PROPOSED 2.5m WIDE TURFED ONE-WAY CROSSFALL PAVEMENT. S~. (2s. EXISTING SWALE DRAIN
aa SWALE DRAIN. REFER DETAIL DIRECT STORMWATER RUNOFF TO \_---" 1) TO BE RETAINED
“ AND CALCULATIONS. -

 

 

 

 

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BUSHFIRE SETBACK
| a a REFER TO DRAWING P07 FOR DETAILS OF EXISTING} o
| aan VEGETATED COVENANT ~~ GULLY AND STORMWATER FLOW CALCULATIONS. _ “
q LEGEND
— @ —EIOH— — — __ EXISTING OVERHEAD ELECTRICAL & POLE
. —----+-— EXISTING EDGE OF PAVEMENT
;
Y SWALE DRAIN FLOW CAPACITY CALCULATIONS — — —wtoo— — — __ EXISTING WATER RETICULATION (DN100)
a Q100 FLOW - CMT 0.364Ha
GULLY LONGITUDINAL GRADE = 7.6% — — —S160— — — __ EXISTING GRAVITY SEWER (DN160)
MANNING'S EQN ———T——— _ EXISTING TELECOMMUNICATIONS
ie FLOW AREA = 0.173m?
_ a yi WETTED PERIMETER = 1.518m —> —> —> —> — _ EXISTING SWALE DRAIN
TN » C ROUGHNESS = 0.045 (UNMAINTAINED TURF) wro0- PROPOSED WATER RETICULATION (DN100)
a « “ FLOW DEPTH = 0.24m 2.50m
aA -N VELOCITY=1.45m/s --—-— =--™r™|:- S150 PROPOSED GRAVITY SEWER (DN150)
CAPACITY @ FLOW DEPTH = 0.24m*/s . LPS PROPOSED PRESSURE SEWER
CAPACITY @ MAX DEPTH = 1.11m*%s — DIRECTION OF FLOW
(1% AEP EVENT) [7 PROPOSED AC PAVEMENT
Le PROPOSED CONCRETE DRIVEWAY
we SWALE DRAIN - TYPICAL SECTION L_]
. SCALE 1 : 20 (A1); 1: 40 (A3) ; » * ° “ sm
oes SCALE 1:500 A1, 1:1000 A3
REV | DATE DESCRIPTION BY CHKD PROJECT: DRAWING TITLE:
> orsaaa aass PROPOSED RESIDENTIAL SUBDIVISION PRELIMINARY STORMWATER WALSH
E engineers@walshengnetau = (<a (ae! | cee eee at 7 TRILLER COURT, POMONA LAYOUT PLAN CONSULTING
W walsheng.net.au DIRECTOR APPROVAL ENGINEERS
CONSULTING J 4 15/72 Wises Road, Maroochydore 0.4558 rea 4665 for | LOVE POMONA PTY LTD
PO Box 5512, Maroochydore BC Q. 4558 This Copyright. Other than fc ss of and :
ENGINEERS AB.N. 39 611 482 716 FOR APPROVAL ofitmayin oy fro: by any means (een, meron DRAWING No: C6361/22/P05 REVISION
COUNCIL REFERENCE: SHEET: 5 of 8

 

 

FILENAME : C836-2-P05.cng -DATE: 1915722-4:10pm

 

Al Sheet Size J Design: Mvc__[Drawn:EPW _[Date: MAY 2022