Innovative storage parts to meetthe demands of the times

Aqua Palace
Plastic parts for preventing
urban-type floods and realizing
effective utilization of rainwater

Totetsu Manufacturing, Co., Ltd.

Aim to become the world standard
for solution for water problems

Aqua Palace

Aim to become the world standard
for solution for water problems

Characteristics
The structure can be selected.
An economically rational storage tank is realized.
Pressure resistant performance required under a parking lot is different
from what is required in a greenhouse. With the Aqua Palace, the structure
can be selected according to the installation site and the purpose of use.

Constructional elements
Top/bottom
surface plate

4 AD spacer (made of polypropylene)

Partition plate
Side plate

Auxiliary SP pipe

Partition plate
Attachment

Inspection and cleaning within the tank is possible.
Improvement in connection with maintenance and management
Underground storage tanks are affected by impact by cars, vibration during
an earthquake and variation of underground water. That is why the tanks
need inspection and maintenance in order to operate safely for as longas several tens of years. With the Aqua Palace, person can get inside andreliably inspect and maintain all the parts within the tank.

Porosity is high; it is higher than 92%, 95% at the highest.
Maintenance and improvement of storage efficiency
Porosity of the Aqua Palace varies according to the selected structure but, inany case, a high storage ratio exceeding 90% is possible. The larger the storagetank is, the higher the porosity is.

Outerperipherypipe

Auxiliary SP pipe

AD spacer
Inner axis pipe

Main SP pipe

Partition plate
Side plate

AD spacer
Attachment

Partition plate
Top/bottom
surface plate

1 Top/bottom surface plate (made of polypropylene)
Ultra-large storage tanks can be constructed
Achievement of solutions for global water problems
The Aqua Palace is stable in assembly in the vertical direction. Becauseof this, it can be used for construction of ultra-large storage tanks to besubstituted for dams and reservoirs, aided by adoption of the cell type or
hybrid type structure. It is expected to spread as a system contributing tosolution for global water problems in future.

Contributing to formation of a recycling-oriented society through the effective utilization of PVCIt has been found that resin products such as polyvinyl chloride (PVC) tubes
do not deteriorate, so long as they are under the ground and free from UVlight. Thus, in connection with construction of the Aqua Palace tank, recycled
products (including reused ones) will be proactively utilized for regions forwhich it is determined that the recycled products can be used "without aproblem" even if safety is taken into consideration.
A PVC tube to be disposed of.
Many PVC tubes are in such a good condition that they can be used all right, depending on the member they are used for.

2 AQUA PALACE

Aqua Palace

It can be used either as a top
surface plate or as a bottom
surface plate. It should be set
so that a smooth surface faces
downward when used as abottom surface plate, and thesmooth surface faces upward
when used as a top surface plate.

2 Partition plate (made of polypropylene)
A member constituting the mainpart of the Aqua Palace, along witha spacer pipe (SP pipe). These
plates can be integrated with one
another in the horizontal direction toform a plane.

3 Attachment (made of polypropylene)It mediates between thepartition plate and the ADspacer, connecting andintegrating them.

If it is connected via a partition plate
and an attachment, a slim pipe can beused as a main SP pipe. As a result,space which enables a person toconduct inspection is created within thewater storage tank.

5 Outer periphery pipe (made of polypropylene)
Two pipes face and are engaged
with each other when they areused. These pipes receive thesoil pressure conveyed throughthe side plate.

6 Side plate (made of polypropylene)
A flat plate that directly receives
the soil pressure from the lateralside. Four protrusions of inside theside plate come into contact withthe outer periphery pipe and the R-planes on the upper and bottom
sides touch the partition plate, sothat the pressure is distributed.

7 Joint piece (made of polypropylene)
This joint piece
connects a pluralityof partition plateswith one another toform an integrated
plane.

Piece for 4 corners

Piece for 2 corners

Piece for intermediates

for connecting a point
where corners of four
partition plates meetfor connecting a point
where corners of two
partition plates meetfor connecting a point
where sides of two
partition plates meet

8 Main SP (spacer) pipe (made of vinyl chloride)
In principle, VU200 (JIS standard or equivalent) should be used. In the caseof T-6 vehicle load or smaller, PVC-recycled (reused) pipes can be used.

9 Auxiliary SP pipe (made of vinyl chloride)
A PVC-recycled (reused) pipe with a diameter of 125 to 250 should beused.

10 Inner axis pipe (made of vinyl chloride)
A PVC-recycled (reused) pipe with a diameter of 50 to 100 should be used.
* Colors of products in the catalog are added for the purpose of distinction, and different from theactual product colors.

AQUA PALACE 3

Aim to become the world standard
for solution for water problems

Aqua Palace

Aim to become the world standard
for solution for water problems

Aqua Palace

Basic configuration of the Aqua Palace
Auxiliary SP pipe

Top surface plate

Level 3

Shock absorbing part (Level interval: h=500)

500(To be installed when the vehicle load of T-25 is required)

Level 2

Level spacing
h=2000The maximum level intervals
should be 2 meters in principle.

500

Pitch500

Pitch500Pitch500

Pitch

Main SP pipeAA

Level 1

OuterPeriphery Part

Configuration of the outer periphery part configuration

Outer peripherypipe

Outer periphery part

Bottom surface plate

Bottom surface plate

OuterPeriphery Part
Outer periphery partA-A cross section

Arrangementof topplates
surface plates
Arrangementof top surface

Auxiliary SP pipe

Partition plate

An inspection aisle should be secured

Side plate

Reserve

Seismic- reinforced
part reserve

The place to arrange top surface plates

In order to prevent the place marked , where corners of partition
plates meet, from becoming a weak point of the structure, the top
surface plate should be arranged as shown in the figure above.

Inner axis pipe

An inspection aisle should be secured

Partition
675
plate

The place to arrange partition plates

Pressure resistance reinforcement by reserves
More "reserves", which are installed within outer periphery parts, should
be installed so as to respond to the lateral soil pressure increasing as
the depth of the storage tank increases. In addition, inner axis pipes areinserted into the partition plate and the auxiliary SP pipe here, just like theouter periphery part.

∅120
∅92

Seismic-reinforced parts
For reinforcement, 1 to 5 inner axis pipes (PVC pipes) can be inserted fromfive holes in the partition plate into the outer periphery part.
* Colors of products in the catalog are added for the purpose of distinction, and different from theactual product colors.

4 AQUA PALACEIn order to ensure 100% earthquake resistance, one seismic-reinforced
part per approximately 50 square meters of the surface area within the tank(except for outer periphery parts) is provided. Inner axis pipes are inserted
into the partition plate and the auxiliary SP pipe here, just like the outerperiphery part.

AQUA PALACE 5

Aim to become the world standard
for solution for water problems

Aqua Palace

Aim to become the world standard
for solution for water problems

Aqua Palace

Configuration and assembly of each partThe center of the main body

Seismic-reinforced part

Partition Plate

Shock absorbing part

Attachment
AD spacer
Top/bottom surface plate

Shockabsorbing part

Main SP Pipe

Auxiliary SP pipe

AD spacer
Attachment
Partition plate
Top/bottom surface plate
The top/bottom surface plate is placed at bottom first, and the partition
plate is engaged onto the top/bottom surface plate and is connected by ajoint piece. Then parts are assembled in order from the bottom, as shown in
the figure above, to form a three-dimensional object.

If the strength of T-25 is required, a shock absorbing part is provided on
this. If the strength of T-14 or smaller is acceptable, the top/bottom surface
plate is provided on the top and assembly is completed.

Outer periphery part
Outer periphery pipes and auxiliary SP pipes are directly set to partition
plates, without using any attachments or AD spacers.

Inner axis pipes are usually inserted from holes in the uppermost partition
plate (See the figure below). There are five insert holes, and more pipes areinserted as the tank height is larger. The relation should be as follows:

Lateral pressure resistance reinforcement by reserves

Place to provide a hatch

Reserves are provided when the tank height is 2m or higher (including theshock absorbing part). The number of reserves is increased according tothe lateral pressure.

The place to provide a maintenance hatch is firmly reinforced by outerperiphery pipes located immediately below, and around the place.
Maintenancehatch

Tank height 1.0m --- 2 points (b and c)
Tank height 1.5m --- 3 points (a, b and c)
Tank height 2.0m or higher --- all points (a, b, c, d and e)

baedc
Outer periphery

Reserve

Reserve

Reserve

Reinforced Maintenance Reinforced
part
part
hatch

Side plate

Auxiliary SP pipe
Outer periphery pipe

6 AQUA PALACE

Place to insert inner axis pipes
Reserve

Outer periphery
Reserve

Reserve

Reserve

AQUA PALACE 7Aim to become the world standard
for solution for water problems

Aqua Palace

Aim to become the world standard
for solution for water problems

Aqua Palace

Standard structure of the Aqua Palace1

T-25 is the load capacity required where heavy-duty vehicles weighing
up to 25 tons are expected to enter. To be concrete, T-25 is required
below public parking lots or in the underground space of vacant land incities.

T-25-compatible
standard structure

4 H (height) = 3.0m

Specification

NO.

Shock absorbing part

1 H (height) = 1.0m

Specification

Top/bottom surface plate

1.0 m

Partition plateMain SP Pipe

Side plate• As main SP pipes, PVC pipes (including recycled/reusedproducts) of at least VU 150 or equivalent are used.
• Inspection holes are properly arranged so that theinside of the tank can be inspected and cleaned fromthe top of the tank.
• Normally, pressure resistance reinforcement with theuse of "reserves" is not used.

Pressure resistancereinforcing part
3.0 m

NO.

Main SP Pipe*"2 pitches, 1.0m" changes into "3 pitches, 1.5m" at thelowest step when H (height) =3.5m.
Specification is the same as in the case of H=3.0m.

Pressure resistancereinforcing partTop/bottom
surface plate

Outer periphery pipe

• As main SP pipes, PVC pipes of VU 200 or equivalentare used.
• A maintenance hatch is provided, and a person goes
into the tank to inspect and clean the inside of the tank.
• Normally, pressure resistance reinforcement with theuse of "reserves" is used.

Main SP Pipe

Inner axis pipe

2 H (height) = 1.5m

Specification

NO.

Auxiliary SP pipe

1.5 m

Shock absorbing part

Main SP pipe

• As main SP pipes, PVC pipes of VU 200 or equivalent
are used.
• A maintenance hatch is provided, and a person goes
into the tank to inspect and clean the inside of the tank.
• Normally, pressure resistance reinforcement with theuse of "reserves" is not used.

5 H (height) = 4.0m
Shock absorbing part

Inner axis pipe

3 H (height) = 2.0m

Specification

4.0 m

Shock absorbing part
2.0 m

• As main SP pipes, PVC pipes of VU 200 or equivalent
are used.
• A maintenance hatch is provided, and a person goes
into the tank to inspect and clean the inside of the tank.
• Normally, pressure resistance reinforcement with theuse of "reserves" is used.

Pressure resistancereinforcing partNO.

8 AQUA PALACE

SpecificationNO.

Pressure resistancereinforcing part• As main SP pipes, PVC pipes of VU 200 or equivalent
are used.
• A maintenance hatch is provided, and a person goes
into the tank to inspect and clean the inside of the tank.
• Normally, pressure resistance reinforcement with theuse of "reserves" is used.
*4 pitches, 2.0m under the shock absorbing part when H(height) =2.5m.
Specification is the same as in the case of H=2.0m.

Main SP pipe

Pressure resistancereinforcing part
Main SP pipe

AQUA PALACE 9Aqua Palace

Aim to become the world standard
for solution for water problems

Aim to become the world standard
for solution for water problems

Aqua Palace

Examples of construction of the Aqua Palace

2T-6-compatible
standard structure

T-6 is the load capacity required where only passengers pass and sometimes
up to medium-sized vehicles are expected to enter. This structure is used in theunderground space of gardens of collective housing and houses, parking space ofordinary households, farmland and greenhouses.

1 H (height) = 1.0m

Specification

NO.

1.0 m

Top/bottom surface plate

Partition plate• As main SP pipes, PVC pipes (including recycled/reusedproducts) of VU 200 or equivalent are used.
In some cases, however, two PVC pipes with a smaller
diameter (100 to 150) can be used instead.(See below)

Main SP pipe• A maintenance hatch is provided, and a person goes
into the tank to inspect and clean the inside of the tank.

Side plate

Outer periphery pipe

Top/bottomsurface plate• Pressure resistance reinforcement with the use of"reserves" is used only when H (height)=2.0m.

2 H (height) = 1.5m

NO.

Aqua Palace assembled to have a capacity of about 100m3.

1.5 m

Figure: An example of arrangement when two PVC pipes
are used per partition plate

Main SP Pipe
Inner axis pipe

3 H (height) = 2.0m

Main SP Pipe with a diameter of
100 to 150 Partition plate

NO.

Assembly work 1

Assembly work 2

 edium-sized udnerground water storage tank under construction: with a waterMstorage capacity of 95 m3.

S mall parts are assembled in the plant, transferred to the construction site andlifted by a crane.

2.0 m

Auxiliary SP Pipe

Pressure resistancereinforcing part

Partition plate

10 AQUA PALACEAQUA PALACE 11

Notes• The Aqua Palace should be assembled correctly.
Tasks including engagement of partition plates, or of a partition plate and a spacer,should be conducted properly and correctly. Incorrect engagement may lead tostructural breakdown or workers’ falls.
• Please beware of fall accidents.
Workers stepping on a partition plate of the outer periphery part should beware offall accidents.
• Open flame is strictly prohibited in the Aqua Palace.
Do not put flame or a heat source near the Aqua Palace. A fire or softening deterioration may be caused.

• Please beware of the lack of oxygen when entering the inside of thecompleted storage tank.
Workers entering the Aqua Palace tank in use for the purpose of inside inspection
should take advantage adequate measures against the lack of oxygen, toxic gases
and bacterial infections.
• Please take care during the design or construction work at a place
where the underground water level is high.
Plastic storage parts are easily affected by the buoyancy because of their specificgravity is small. Please take adequate measures against levitation when a storagetank is installed at a place where the underground water level is high. Pleasebeware of intrustion of rainwater into the surrounding areas or a rise in the level ofunderground water during the construction work, and take measures such as
drainage as necessary.

Totetsu Manufacturing, Co., Ltd.
Head Office

3-6-11 Osaki, Shinagawa-ku, Tokyo 141-0032
TEL 03-3493-5911 FAX 03-3493-1470

Kawagoe Factory 1599 Kamoda, Kawagoe City, Saitama Prefecture 350-0844
TEL 0492-22-6248 FAX 0492-26-0399

U R L：http://www.totetu.com
E-mail：tokyo@totetu.com

Agency*This specification provided in this catalog is subject to change as a result of new development or improvement.
2018.04.500.PPC