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SCG 25353 Basement Drainage & De-watering - 02.12.2015 · RAP15/0034
Attached to the e-mail OPW16/0020 - Operational Works Application.
Revision Description Date
. . .
. . .
4 . . .
SITE COVER =47.41%
330° 43'05"
30.614
Legend:
2000
2 1. Electric Dewatering pump with
C7.0 generator backup. Acid Sulphate
treatment of the groundwater will be in
accordance with Core Consultants Acid
JETSKI
Sulphate Soil Investigation Report No.
PANEL LIFT DOOR
J000154_001_R_Rev0.
STORE
GATES
1 TURN AROUND 1
4.5 x 3.5 DRIVEWAY
.0 C7.0
RL 1.160 2. Piped drain to road reserve kerb and
CANOE RACK
channel. (Note: Drain to canal indicated
as a preferred option to avoid nuisance
of continual drainage to neighbourhood).
BASEMENT 11 10 9 8
240° 43'05"
GARDEN
20.117
12.8 x 10.0
3.5 x 2.0 LIFT 3. De-watering spears by specialist
RL 0.100 1.5 x 1.5 7
12
6 contractor.
WITTA CIRCLE
13
14 5
4 15
16
4
3
4. Cantilevered Contiguous concrete
17 2
STORE ROOM 18 1 piled wall. No ground anchors beyond
3.5 x 2.2
UP
60° 43'05"
wall (into neighbouring properties)
20.117
FOYER
CANAL
GLASS WALL
2.0 x 1.5
RL 250 WINE CELLAR
permitted.
2.9 x 1.0
POOL PLANT
ABOVE ROOM SEAT
3.5 x 1.9
MUD
GLASS WALL WITH FEATURE TIMBERS
ROOM
2.9 x 2.0
CUPBOARD
LINE OF V
GLASS WALL
VOID 6165
BATH FG
2.9 x 2.0 SH
GYM WC
2
SLD
SLD
WATER TANK STORE ROOM
6.6 x 5.5
3.5 x 5.5
POND
GLASS WALL
3.2 x 3.2
0.3m MAX UP SAUNA
2.9 x 2.5
16 1
15 2
14 3
13 12 4
11 10 9 8 7 6 5
MIRROR
2000
30.614
150° 43'05"
3 1
4
Basement Construction Methodology:
PREFERRED DRAIN TO CANAL
DEBUILD T/A
- The proposed basement area is to be retained via contiguous concrete piles forming a watertight FROM DE-WATERING PUMPS
perimeter to the proposed basement excavation.
- The proposed basement area will be de-watered prior to excavation via the installation of
PENDING CONCIL APPROVAL. SCG consulting ENGINEERS
STRUCTURAL●CIVIL●GEOTECHNICAL
ABN 40 098 481 899
dewatering sand spears serviced by electric pump housed in a temporary sound proof
constructed blockwork enclosure.
1/11 PROJECT AVE NOOSAVILLE QLD 4566
- The pump will have backup electric supply via a generator set which is to be manually operated
by the site foreman in the event of a power outage. Ph (07) 5455 5604 Fax (07) 5455 5696
- The site is to be tested for potential acid sulphate soils. If present the collected groundwater will
be treated for Acid Sulphates, in accordance with the Acid Sulphate Soils Management Plan. Title: BASEMENT DE-WATERING
- Extracted groundwater will be drained to the kerb and channel. However we believe a better
solution would be to drain directly to the canal which will avoid continual drainage into the road Project 47 Witta Circle
reserve, avoiding any nuisance to neighbours in the area. Noosa Heads
Rev. - 30.01.05
- The dewatering process will remain operational until a point where the buildings weight exceeds Rev.
the potential buoyancy forces from the groundwater. Date: Oct 2015 Drg No. 25353 -B1 .
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Revision Description Date
2 ONE WAY
CHECK VALVE
SITE COVER =47.41%
7 . . .
RISING
330° 43'05"
30.614 . . .
TO K & C
MAIN
. . .
2000
2
C7.0
Legend:
1. Grated Drain across driveway set at a
JETSKI
8 5 1 level higher than RL 2.1 Drain to 2. Outlet
PANEL LIFT DOOR
STORE 9 to 2 fitted with Rhinoflex Duckbill check
GATES
1 TURN AROUND 1
.0
4.5 x 3.5 DRIVEWAY
C7.0
valve to limit backflow.
RL 1.160
3 2. Atlantis Matrix Drainage cells for
CANOE RACK
6 infiltration of storm water into ground.
BASEMENT 11 10 9 8
240° 43'05"
GARDEN 3. Storage Area (wet area) set above top
20.117
12.8 x 10.0
LIFT
CANAL
3.5 x 2.0
RL 0.100 1.5 x 1.5
12
7 level of existing revetment wall. Fall to
6
rear of allotment.
WITTA CIRCLE
13
14 5
15 4
16 3
STORE ROOM
17 2 4. Fully tanked concrete basement walls
18 1
3.5 x 2.2
UP and floor, including driveway ramp and
60° 43'05"
20.117
FOYER adjacent retaining walls.
GLASS WALL
2.0 x 1.5
POOL PLANT
11 RL 250 WINE CELLAR
2.9 x 1.0 5. Grated drain and oversize drain (to
ABOVE 10
ROOM
3.5 x 1.9
SEAT avoid blockage) to 6.
MUD
GLASS WALL WITH FEATURE TIMBERS
ROOM
2.9 x 2.0
6. Baffled pump well (primary and
CUPBOARD secondary chambers) with a pump for
LINE OF V
each chamber. A grated inlet for the
secondary chamber. 2(No.) pumps
GLASS WALL
VOID 6165
BATH FG
2.9 x 2.0 SH (primary and backup pump). Rising main
GYM WC to 7 via air break above 7.
SLD
SLD
WATER TANK STORE ROOM
6.6 x 5.5
3.5 x 5.5
POND 7. Grated pit and gravity drain to back of
GLASS WALL
3.2 x 3.2
0.3m MAX UP SAUNA kerb adaptor.
2.9 x 2.5
16 1
15 2
14
13 12
11 10 9 8 7 6 5
4
3 8. Water Level Monitor battery driven from
MIRROR
pump supply batteries.
9. Channel Drain along wall base in slab
2000
profile. Drain to 5.
30.614
150° 43'05"
10. Battery Bank (6hr capacity) and
Basement Waterproofing Methodology 4 Generator backup. Provide wall mounted
instruction panel, detailing the operation
and on-going maintenance of the system.
-The basement will be constructed as a tanked (dry) waterproof box. The retaining walls - The pumps are to be served via a battery bank (UPS-uninterrupted power supply) with at
adjacent to the driveway and the driveway ramp will also be tanked integrally with the least 6hr operating capacity but connected to a mains supply recharge. A backup 11. Channel Drain along wall base in slab
basement. generator is to be provided to recharge the batteries in the event of an extended power profile. Drain to 6.
Minimal volumes of storm water will enter the basement via the driveway ramp into the outage. The generator is to be located in the basement with exhaust fumes extracted to
basement. This will be captured in part via a grated drain running across the driveway roof level. The generator is to have electric start capabilities switched in the event of low
which is set at a level to allow fall into a storm water soakage pit constructed adjacent battery charge and extended power outage DEBUILD T/A
the basement. The outflow point if the drain into the pit will be fitted with a rubber - The rising main from the pump set is to be extended to surface and drained above a level SCG consulting ENGINEERS
STRUCTURAL●CIVIL●GEOTECHNICAL
duckbill non-return. (Check) valve to stop backflow. An additional grated drain will be higher than RL.2.8m into a grated pit to provide an air break (tundish).
ABN 40 098 481 899
constructed across the driveway set at the entrance to the basement. This will drain to a - A water level monitor is to be provided in the garage at the lowest point which is set to
pump well for pumping up to ground level outside the building and allow drainage to the activate the secondary (backup) pump should the water level rise higher than the finished 1/11 PROJECT AVE NOOSAVILLE QLD 4566
street. floor level in the garage or a pre-determined freeboard level. Ph (07) 5455 5604 Fax (07) 5455 5696
- The pumpwell is to be baffled forming a primary and secondary chamber each fitted - The garage floor level and room containing the pump well configuration is to be set lower BASEMENT DRAINAGE &
than the adjacent home theatre to provide freeboard. Title:
with a Davey 0.4kw Dewatering Pump. The secondary pump will be activated following WATERPROOFING
failure of the primary pump or overflow from the primary chamber. The secondary - All roof water will be drained via a totally separate gravity system into the proposed water
Project 47 Witta Circle
chamber will have a grated inlet to capture any excess surface water. (Refer Schematic tank. The water tank is to be separated from the basement construction and is to be set Noosa Heads
Rev. - 30.01.05
Diagram Drawing B3). above the identified high groundwater level to avoid buoyancy issues. Overflow from the Rev.
tank will be via gravity drain to the kerb and channel. Date: Oct 2015 Drg No. 25353 -B2 .
Page 3
Revision Description Date
. . .
. . .
. . .
DEBUILD T/A
SCG consulting ENGINEERS
STRUCTURAL●CIVIL●GEOTECHNICAL
ABN 40 098 481 899
1/11 PROJECT AVE NOOSAVILLE QLD 4566
Ph (07) 5455 5604 Fax (07) 5455 5696
Title: BASEMENT PUMPING SCHEMATIC
Project 47 Witta Circle
Noosa Heads
Rev. - 30.01.05
Rev.
Date: Oct 2015 Drg No. 25353 -B3 .
Used in these records
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