052ultrarib2

uPONOr uLTrA rIB 2 GrAVITy SEWEr SySTEM 67

Gra

vity

Sew

er

Syst

ems

The Ultra Rib 2 system is designed to meet the strictest tightness, durability and strength requirements.

UPONOR INFRASTRUCTURE

uPONOr GrAVITy SEWErSySTEM uLTrA rIB 2

68 uPONOr uLTrA rIB 2 GrAVITy SEWEr SySTEM

Gra

vity

Sew

er

Syst

ems

The uponor ultra rib 2 Gravity Sewer

System offers the optimal solution

for wastewater drainage. ultra rib 2,

commercially available since 1999, is

the only sewer system on the market

with rib-stiffened pipes and fittings

made entirely from seamless SN 8 class

polypropylene (PP).

In the development of the ultra rib 2

system, close attention has been paid to

maximising the service life of the system.

KeyfeaturesofUltraRib2include:

•durable long-life materials

•rib-stiffened structure designed for

maximum stiffness, strength and

lightness

• jointing methods for easy and

ultra-reliable installation

•outstanding mechanical properties

including at low temperatures

5.2 Uponor Sewer System Ultra Rib 2

ultra rib 2 considerably outperforms all

current Nordic and European standards for

underground sewer systems. The system's

reliability is further enhanced by our tight-

ened safety performance requirements,

which are verified by deflection, impact

resistance and Strohhalm testing. Strict in-

house material and process requirements,

combined with external quality controls,

guarantee a system service life of over

100 years when the uponor installation

instructions are followed.

Uponor Ultra Rib 2 Gravity Sewer

System – sealing

The system's sealing rings are designed

to withstand both internal and external

pressure. To ensure protection from sand

and gravel, the seals are set deep within

the socket. As required, the system can

be delivered with standard seals or oil/

petrol resistant seals. Standard sealing

rings are made from styrene butadiene

rubber(SBR).Oilandpetrolresistant

sealsaremadefromnitrilerubber(NBR)

and are marked yellow for easy identifica-

tion. The seals are fitted in the second rib

groove from the spigot end of the pipe.


Gra

vity

Sew

er

Syst

ems

The uponor ultra rib 2 pipes and fittings

provide a comprehensive sewer pipe

system. The pipe is coloured terra cotta

on the outside, and has a light grey inner

surface for optimum visibility during

camera inspection.

Outside diameter (mm) Inside diameter (mm)

200 175

250 220

315 277

450 396

560 493

Pipe dimensions

Table 5.2.2

Table 5.2.1

Properties PP Unit Standard/test method

density 900 kg/m3 ISO 1183

ring stiffness Pipes SN8 kN/m2 ISO 9969

Fittings SN8 kN/m2 ISO 9969

Long-term elastic modulus E50 425 MPa ISO 527-2

Short-term elastic modulus E0 1650 MPa ISO 527-2

Thermal expansion factor 0,18 mm/m · °C

Thermalconductivity 0,22 W/m·°C DIN52612(23°C)

Maximum continuous operating temperature 85 °C

Maximum momentary operating temperature 100 °C

Max. angle of joint deflection 2 °

System and material specifications


Gra

vity

Sew

er

Syst

ems

Approvals

The ultra rib 2 system carries the Nordic

Poly Mark and is INSTA-CErT certified

and approved in the Nordic countries

(Finland,Sweden,NorwayandDenmark).

The INSTA-CErT certificates for all

uponor products can be viewed on our

website at www.uponor.fi.

Approvals & Markings

Example markings on Ultra Rib 2 pipe

Ultra Rib 2 pipe markings

The figure below shows the markings for

uponor ultra rib piping. Explanations for

the markings are given in the following

table.

SEWER ULTRA RIB 2 PP 315/277 SN8

Manufacturer Application Product Material:

polypropylene

Outer and inner

diameter

Stiffness class

UD EN 13476 ❄ ➁ 18 01 2007 13

Application area,

ud = underground

drainage and sewer

within the building

structure and out-

side the building

Product

standard

Nordic Poly

Mark

Snowflake symbol.

Pipe can be

handled in low

temperatures

Production unit

➁ = Hadsund

Production date:

day/month/year/hour

SEWEr uLTrA rIB2 PP 315/277 SN8 ud EN 13476 ❄ ➁ 18 01 2007 13

Table 5.2.3


Gra

vity

Sew

er

Syst

ems

Markings for Ultra Rib 2 fittings

Explanations of the markings for ultra

rib 2 fittings are given below.

UD1

2

U1PP U1

Application area ud =

underground drainage

and sewerage within

the building structure

and outside the

building

Production date:

month/year

recyclable/raw material

05 = polypropylene

Material:

polypropylene

Production unit

u1 = Nastola,

Finland

ULTRA RIB2 SN8DN/OD 200/200-45°

UD PP U1

ULTRA RIB 2 SN8DN/OD

200/20045SDgr

1

2

U1

Product Stiffness class Nominal outer diameter Socket branch 45° Nordic Poly Mark

Table 5.2.4

Sample markings for Ultra Rib 2 branch sockets


Gra

vity

Sew

er

Syst

ems

Ultra Rib 2 Sewer System Design

Structural design

The “Structural design” section of the

Wastewater Systems chapter specifies a

number of design criteria, for which gen-

erally applicable experience-based data

exists. If these criteria are met, no addi-

tional design calculations are required.

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 introductory section of

the Gravity Sewers chapter. Flow charts

for the ultra rib 2 pipe systems, which

use a roughness coefficient value of

0.25 mm, are presented in appendices

1.1, 1.2 and 1.3. The coefficient takes

account of the branches and inspec-

tion chambers typically incorporated in

wastewater sewer systems. The charts

are based on the inside pipe diameter,

although pipe size is expressed according

to the outside diameter. references are

made in the various charts to the flow

design examples presented in the Waste-

water Systems introductory section.

After pipe design, the self-cleaning

capacity and pipe gradient need to be

determined, based on the chosen pipe

size and design flow rate, for which pur-

pose self-cleaning diagrams for different

sized ultra rib 2 gravity sewer pipes are

presented in appendices 2.1 – 2.5.


Gra

vity

Sew

er

Syst

ems

Next, the structural adjustment and joint-

ing of ultra rib 2 pipes and fittings is

described. This section covers

•ultra rib 2 pipe installation

• jointing with ultra rib 2 socket bends,

branches and slip couplers

• installing ultra rib 2 adaptors for

concrete pipe

• joints and spigot/socket base clearance

The fittings of the ultra rib 2 sewer

system are also used in uponor's dupplex

sewer system and PP stormwater system.

1. Cut the pipe along the rib groove using

a fine-tooth saw. Deburr the cut edges

with a blade or file.

2. Fit the seal in the second rib groove

from the spigot end of the pipe.

3. Apply lubricant on the inside of the

socket. To facilitate jointing, also apply the

lubricant on the spigot end sealing ring.

Ultra Rib 2 pipe installation

Ultra Rib 2 Sewer System Installation


Gra

vity

Sew

er

Syst

ems

4. The joint is complete when the pipe end is pushed all the way into the base of the

socket. The pipes can also be slotted together by levering against the rearmost socket,

e.g. with a spade. When doing so, to avoid damaging the socket position a piece of

wood between the socket and the spade.

Joints and clearances

To ensure a sound joint, ultra rib 2 pipe

must be sawn as true as possible along

the rib groove. A well-fitted joint should

leave no gap between the spigot end and

socket base. This will not be achieved if

the pipe is cut unevenly. Final inspection

of the completed pipeline is carried out by

the developer or the developer's agent.


Gra

vity

Sew

er

Syst

ems

Joining an Ultra Rib 2 pipe branch to an existing pipeline

1. Branching off or onto an existing pipe-

line is performed using a branch fitting,

into which the existing line is inserted at

both ends and couplers are fitted over the

joints. Begin by marking off the length of

the branch fitting on the existing pipe.

3. Apply lubricant inside the socket ends

of the couplers. Fit a seal into the second

groove on each spigot end of the branch

fitting. Slot the branch fitting and the

couplings together, by pushing firmly all

the way to the base of the coupling.

2. Cut the pipe along the rib groove using

a fine-tooth saw. Deburr the cut edges

with a blade or file.

4. Cut the equivalent length of the branch

fitting (as previously marked off) from the

existing pipe and install

the branch assembly into place.


Gra

vity

Sew

er

Syst

ems

Installing an Ultra Rib 2 pipe adaptor for coupling to a concrete pipe socket

Coupling to a concrete pipe socket is performed using a spigot adaptor, with a sealing

ring fitted onto the adaptor's collar. Push the adaptor all the way to the base of the

concrete pipe socket; the sealing ring will roll into place, sealing the joint. No lubricant is

used in the concrete pipe joint.


Gra

vity

Sew

er

Syst

ems

Coupling to the spigot end of a concrete pipe is performed using a socket adaptor. Fit

a seal onto the spigot end of the concrete pipe. Push the adaptor into place over the

seal and carefully apply heat to the adaptor's flange; the flange will shrink onto the

concrete pipe, forming a tight joint. No lubricant is used in the concrete pipe joint.

Installing an Ultra Rib 2 pipe adaptor for coupling to a concrete pipe spigot end

78

Gra

vity

Sew

er

Syst

ems

052ultrarib2

Documents

Transcript of 052ultrarib2