056stormwaterpe
description
Transcript of 056stormwaterpe
uPONOr PE STOrMWATEr SySTEM 103
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The heavy-duty stormwater drainage solution
UPONOR INFRASTRUCTURE
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The uponor PE Stormwater System meets
the majority of requirements related to
the storage and drainage of high storm-
water volumes.
The system consists of gravity sewer
pipes used primarily:
•for stormwater drainage
•as stormwater harvesting tanks
•for ventilation
•as culverts
•as stormwater attenuation tanks
The system and its inspection chambers
can be connected to all known sewer
system brands.
The PE stormwater system forms a
com pre hensive and flexible system,
comprising standard components with
a 800–1,600 mm diameter, as well as
fittings and special inspection chambers.
The pipe delivery length is 3 m and 6 m,
although these can be supplemented
with 1.5 m fitting pipes for optimal fitting
on site.
uponor PE Stormwater System pipes are
double-wall pipes with a smooth inner
surface. These pipes are designed for
maximum durability.
5.6 Uponor PE Stormwater System
The inside smoothness of the pipe guar-
antees optimal flow properties.
For a guaranteed long service life and
maximum strength, the system's com-
ponents are made of abrasion resistant
polyethylene. The material has high
impact resistance, even at –20 °C, and
is resistant to hydrogen sulphide and
similar corrosive substances.
The pipe sockets are equipped with a
fixed EPdM rubber seal. Once installed,
this guarantees high sealing pressure and
100% joint tightness.
The system comprises lightweight pipes
that are easy to transport and handle.
The pipes come in two stiffness classes:
– SN 4 and SN 8 – making them ideal for
a wide range of applications.
Jointing is quick and simple: the spigot
end slots directly into a socket containing
a fixed seal.
The uponor PE Stormwater System is
highly resistant to most solvents, acids,
oils and alkalis. A detailed description of
the system’s chemical resistance is given
in the chapter Materials and Service Life.
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Socket
Seal
Sample pipe profile
Figure 5.6.1
SN 4 pipes SN 8 pipes
Inside diameter Volume Outside diameter Weight Outside diameter Weight
mm m3/m mm kg/m mm kg/m
800 0,50 920 32,4 920 42,8
1000 0,79 1120 56,1 1140 106,8
1200 1,13 1320 97,2 1340 134,4
1400 1,54 1640 133,3 1640 193,3
1600 2,01 1840 225,0 1840 275,0
Pipe dimensions
Table 5.6.2
Properties PE100 Unit Standard/test method
density ≥ 940 kg/m3 ISO 1183
ring stiffness SN 2-4-8 kN/m2 ISO 9969
Long-term elastic modulus E50
180 MPa ISO 527-2
Short-term elastic modulus E0 800 MPa ISO 527-2
Thermal expansion factor 0,17 mm/m · °C
Thermal conductivity 0.4 W/m · °C dIN 52 612 / 23 °C
Impact resistance test temp. -20 °C EN 1411
Maximum continuous operating temperature 45 °C
Maximum momentary operating temperature 85 °C
Max. angle of joint deflection ≥ ø800 1 °
System and material specifications
Table 5.6.3
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Approvals & Markings
Approvals
The PE stormwater system is manufactured
according to uponor’s strict quality require-
ments. All pipes are produced in compliance
with uponor factory standard 750, which is
based on the EN 13476-1 standard.
Markings
The pipes carry the following markings
at the socket end:
1000 SN 8 02 2007 PE
Inside diameter Stiffness class Production date:
month/year
Material: polyethylene
1000
SN
8
02 2
007
PE
Table 5.6.4
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Handling
This section describes how the products
are to be loaded, transported, unloaded
and stored.
PE stormwater pipe must be stored on
wooden racks, to protect the pipe sockets
from loading. The maximum stacking
height for pipe bundles is shown in the
table below.
Storage in direct sunlight/heat must be
avoided wherever possible as, due to
their material properties, the pipes can
bend or lose their roundness.
To prevent damage to pipes and fittings,
unloading must be carried out care-
fully and in the proper manner. Never
use chains or cables for fastening down,
unloading or handling pipe loads. Never
unload by tipping.
The storage site must be properly pre-
pared before receiving pipe deliveries.
Stands or racks must be provided for
loose pipes, the storage site must be on
level ground, and suitable pallets must
be provided for storing pipe fittings and
similar products.
Diameter 1 bundle 2 bundles 3 bundlesmm
800 x
1000 x
1200 x
1400 x
1600 x
Pipe storage
Table 5.6.5
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PE Stormwater System Design
Structural design
For suitable installation conditions for
the pipe, refer to the table in the intro-
duction section of the drainage and
Sewer Systems chapter.
Flow design
When determining the pipe system’s
dimensions, it is important to ensure that
the system has sufficient flow and self-
cleaning capacity to ensure trouble-free
operation. The main design principles are
presented in the introduction section of
the drainage and Sewer Systems chapter.
Flow charts for the PE Stormwater System
are presented in appendices 8.1, 8.2 and
8.3. These charts use a roughness coef-
ficient value of 0.25 mm for the whole
system, including fittings and inspection
chambers. The roughness coefficient of
the pipe alone is 0.06 mm.
Protection against
hydrostatic uplift
The pipes can be anchored down, for
example, with a geotextile or geonet, to
protect them against hydrostatic uplift
due to rising groundwater levels. An
alternative option is to drain the site.
According to experience, hydrostatic up-
lift is not problematic if the backfill above
the pipe crown corresponds to the pipe
diameter, and the volume weight of the
backfill is 18 kN/m or higher.
The uplift of an empty PE pipe below
groundwater level and the ballasting
effect of the backfill can be calculated
using the chart given below. This calcula-
tion is performed per pipe metre. The
chart can also be used to calculate the
hydrostatic uplift of cylindrical tanks.
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The following chart shows the minimum
required depth of backfill above the pipe
crown, for the SN 4 uponor PE Storm-
water System pipe.
Minimum required depth of cover to prevent hydrostatic uplift in groundwater areas
Dep
th o
f co
ver
abov
e cr
own
(m)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500
soil type 1: bulk density = 16 kN/m3 soil type 2: bulk density = 18 kN/m3 soil type 3: bulk density = 20 kN/m3
Pipe size - inside diameter (mm)
As the chart shows, the bulk density of
the backfill is crucial with respect to how
deep the pipe must be laid to prevent
hydrostatic uplift.
The chart is based on the use of SN 4
stiffness class pipes, but can also be
applied to SN 8 pipes.
Geotextiles and geonets are used to
increase pipe ballast and prevent uplift.
After the pipe or tank is laid, the trench
is filled with a suitable initial backfill
material(haunching)uptothepipe's
centerline.
Minimum required depth of cover for SN 4 class Uponor PE
Stormwater System pipe to prevent hydrostatic uplift in groundwater areas
The geotextile or geonet is wound over
thepipe(inmostcasestransverselyacross
the pipe, although the direction depends
on the roll width and which direction
hasthehighesttensilestrength).When
laying the textile or net, it is important to
ensure that the anchorage length meets
minimum requirements on both sides of
the pipe. This requires a separate calcula-
tion. Initial backfilling and compacting is
then continued.
This chart is based on the pipe diameter
and backfill depth for three different
backfill soil types.
Diagram 5.6.6
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Geotextile
Geotextile
The geotextile or geonet should be
covered with non-cohesive soil as, due
to superior interaction between non-
cohesive soil and geotextiles/nets, the
anchorage length of the textile/net can
normally be shortened.
If the geotextile or geonet is used to sta-
bilise the pipe, the width of the textile/
net must be calculated separately.
Figure 5.6.7 Laying a geotextile or geonet
Geotextile or geonet installation for increased pipe ballast
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PE Stormwater System Installation
The following section describes the
handling and jointing of uponor PE
stormwater pipe.
3. Remove any sand etc. from the socket
and seal.
4. Clean the spigot end and lubricate
it with Uponor lubricant.
1. The ideal method for unloading PE
stormwater pipes is to use two lifting
slings on each pipe. This method protects
the socket and seal, and the spigot end,
from damage.
2. Check each pipe for transport damage
or flaws.
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5. The pipes are coupled by pushing the
spigot end fully home to the base of the
socket. If an excavator bucket is used to
push the pipe into place, always place a
block of wood between the bucket and
the pipe. The pipe must not be cut.
6. Initial backfill must be evenly com-
pacted on both sides of the pipe. Uneven
compaction can result in the transverse
displacement and deformation of the pipe.
7. After final backfill and compaction, the
pipe interior is inspected as necessary, for
any deformation and for angular deflec-
tion of the joints.
In the case of deeper trenches, a pipe
grapple can be used as an excavator
attachment for safer pipe placement.
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Jointing with other pipe types
The uponor PE Stormwater System,
including all inspection chambers, fittings
and adaptors, is fully compatible with all
known piping systems on the market.
1. Uponor PE Stormwater System
– concrete chambers or structures
The PE pipe can be connected to a
concrete chamber using a concrete-cast
PE socket.
Installation and casting of a concrete-cast
PE socket:
•An expansion sealing strip is installed
alongside the fixed collar of the PE
socket to be cast, on the water pressure
side of the collar.
•The castable PE socket is fastened to
a casting form, which is sealed around
the socket.
•A 35 MPa strength concrete suitable
for harsh environments is then cast
around the socket.
•The embedded socket is coupled to
the pipeline.
Concrete
Concrete-embedded socket
Water pressure
Expansion sealing strip
Concrete-cast PE socket installation
Figure 5.6.9
Pipeline direction changes are achieved
using socket bends. The maximum allow-
able angular deflection of the joints is 1 °.
Angular deflection, degrees 3 m pipe displacement 6 m pipe displacement
SDgr mm mm
1 52 105
Max. allowable angular deflection
Table 5.6.8
NOTE: The length of standard pipes and
fittings cannot be changed. Special-
length fitting pipes are used for fine-
tuning the pipeline length.
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2. Uponor PE Stormwater System
– concrete pipes
uponor's PE stormwater chambers can
be connected to concrete pipelines using,
for example, Fernco adaptor couplings.
An alternative option is to cast a castable
uponor PE socket onto a concrete socket.
3. Uponor PE Stormwater System
– PVC pipes
Smooth PVC pipes are coupled to PE
chamber inlets/outlets via a PVC double
socket. uponor also delivers bespoke
solutions and joints that require welding.
Connection to Uponor Stormwater Syste
m DW
Connection to sm
ooth PVC pipe
Connection to Ultra
Rib 2 system
Connection to sm
ooth ProFuse pipe
Connection to concrete pipe
4. Uponor PE Stormwater System
– Ultra Rib 2 and Dupplex pipes
ultra rib 2 or dupplex pipes are con-
nected to PE chamber inlets/outlets with
spigot or socket adaptors. uponor also
delivers bespoke solutions and joints that
require welding.
5. Uponor PE Stormwater System
– PE pipes
Smooth PVC pipes are coupled directly to
PE chamber inlets/outlets and the joint
is then electrofusion welded. These pipes
can also be coupled with a slip coupler.
Coupling with other pipe types can be
carried out, either using separate fittings
or by using inspection chambers equipped
with fixed inlet/outlet connections.
Coupling methods
Figure 5.6.10
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PE stormwater pipe connections
If, for example, a surface water drain
is to be connected to the stormwater
sewer, uponor can deliver pipes or fit-
tings with ready-welded connections.
An alternative option is to use special
PE inlets designed for 110 or 160 mm
diameter pipes. In such a case, a hole is
drilled into the pipe, a PE inlet is installed
in the hole, and a short PVC socket pipe
or bend is fitted to the inlet.
1. Drill the inlet hole with a hole drill.
2. Install the PE inlet in the hole.
3. Apply lubricant to the socket pipe. 4. Install the socket pipe.
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Ln1,500 mm
250 250 250 250 250 250
Bevel
Point of cut
Shortening a fitting pipe
1. Cut the fitting pipe flush with the rib
edge using e.g. a circular saw.
2. Bevel the end in accordance with
Table 5.6.12 with e.g. an electric plane.
3. To ensure a watertight joint, check the
spigot end for cracks or damage.
4. Couple the spigot end with the socket
in the normal manner.
Bevel
Pipe Bevel
Width (mm) Width (mm)
800 30
1000 40
1200 40
1400 40
1600 40
Pipe sizes and bevelling
Table 5.6.11
Figure 5.6.12