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Gravity Sewer Systems

UPONOR INFRASTRUCTURE Uponor Gravity Sewer System ULTRA RIB 2

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

Uponor Ultra Rib 2 Gravity Sewer System

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Gravity Sewer Systems

5.2 Uponor Sewer System Ultra Rib 2 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. Key features of Ultra Rib 2 include: • 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

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Ultra Rib 2 considerably outperforms all current Nordic and European standards for underground sewer systems. The system's reliability is further enhanced by our tightened safety performance requirements, which are verified by deflection, impact resistance and Strohhalm testing. Strict inhouse 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). Oil and petrol resistant seals are made from nitrile rubber (NBR) and are marked yellow for easy identification. The seals are fitted in the second rib groove from the spigot end of the pipe.

Uponor Ultra Rib 2 Gravity Sewer System


Gravity Sewer Systems

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.

Pipe dimensions Outside diameter (mm) Inside diameter (mm) 200 175 250 220 315 277 450 396 560 493

Table 5.2.1

System and material specifications 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

Thermal conductivity

0,22

W/m · °C

Maximum continuous operating temperature

85

°C

Maximum momentary operating temperature

100

°C

Max. angle of joint deflection

2

°

DIN 52 612 (23 °C)

Table 5.2.2

Uponor Ultra Rib 2 Gravity Sewer System

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Gravity Sewer Systems

Approvals & Markings Approvals The Ultra Rib 2 system carries the Nordic Poly Mark and is INSTA-CERT certified and approved in the Nordic countries (Finland, Sweden, Norway and Denmark).

The INSTA-CERT certificates for all Uponor products can be viewed on our website at www.uponor.fi.

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 RIB2 PP 315/277 SN8 UD EN 13476

❄ ➁ 18 01 2007 13

Example markings on Ultra Rib 2 pipe

SEWER Manufacturer Application

ULTRA RIB 2

PP

315/277

SN8

Product

Material:

Outer and inner

Stiffness class

polypropylene

diameter

UD

EN 13476

Application area,

Product

Nordic Poly

Snowflake symbol. Production unit

UD = underground

standard

Mark

Pipe can be

drainage and sewer

handled in low

within the building

temperatures

➁ = Hadsund

18 01 2007 13 Production date: day/month/year/hour

structure and outside the building

Table 5.2.3

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Uponor Ultra Rib 2 Gravity Sewer System


Gravity Sewer Systems

Markings for Ultra Rib 2 fittings Explanations of the markings for Ultra Rib 2 fittings are given below.

Sample markings for Ultra Rib 2 branch sockets

UD

PP U1

ULTRA RIB2 SN8 DN/OD 200/200-45°

UD

1

U1

PP

U1

2 Application area UD =

Production date: Recyclable/raw material

Material:

Production unit

underground drainage

month/year

polypropylene

U1 = Nastola,

05 = polypropylene

Finland

and sewerage within the building structure and outside the building

1 ULTRA RIB 2

Product

SN8

Stiffness class

DN/OD 200/200 Nominal outer diameter

U1

2 45SDgr

Socket branch 45°

Nordic Poly Mark

Table 5.2.4

Uponor Ultra Rib 2 Gravity Sewer System

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Gravity Sewer Systems

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 generally applicable experience-based data exists. If these criteria are met, no additional 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 selfcleaning 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

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1.1, 1.2 and 1.3. The coefficient takes account of the branches and inspection 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 Wastewater 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 purpose self-cleaning diagrams for different sized Ultra Rib 2 gravity sewer pipes are presented in appendices 2.1 – 2.5.

Uponor Ultra Rib 2 Gravity Sewer System


Gravity Sewer Systems

Ultra Rib 2 Sewer System Installation Next, the structural adjustment and jointing 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. 2. Fit the seal in the second rib groove from the spigot end of the pipe. Ultra Rib 2 pipe installation

1. Cut the pipe along the rib groove using a fine-tooth saw. Deburr the cut edges with a blade or file.

Uponor Ultra Rib 2 Gravity Sewer System

3. Apply lubricant on the inside of the socket. To facilitate jointing, also apply the lubricant on the spigot end sealing ring.

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Gravity Sewer Systems

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.

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Uponor Ultra Rib 2 Gravity Sewer System


1. Branching off or onto an existing pipeline 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.

2. Cut the pipe along the rib groove using a fine-tooth saw. Deburr the cut edges with a blade or file.

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.

4. Cut the equivalent length of the branch fitting (as previously marked off) from the existing pipe and install the branch assembly into place.

Uponor Ultra Rib 2 Gravity Sewer System

Gravity Sewer Systems

Joining an Ultra Rib 2 pipe branch to an existing pipeline

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Gravity Sewer Systems

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.

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Uponor Ultra Rib 2 Gravity Sewer System


Gravity Sewer Systems

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

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.

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Gravity Sewer Systems

052ultrarib2  

http://www.uponor.fi/~/media/countryspecific/finland/download-centre/technical-handbook-eng/052ultrarib2.pdf?version=1