Catalogue EPAMS EN

EPAMSÂŽ Siphonic cast iron drainage system

Comprehensive pipe solutions

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Location

Project

Area (m²)

Building Type

Shanghai

Shanghai Pudong International Airport Terminal 1

176 000

Airports

Hefei

Anhui International Exhibition and Conference Centre

34 157

Exhibition Centres

Xian

Xian Xianyang International Airport

35 110

Airports

Dongguan

Dongguan Nokia Factory Phase I

16 080

Industrial Buildings and Factories

Dongguan

Dongguan Nokia Factory Phase II

12 400

Industrial Buildings and Factories

CHINA

MACAU Sai Wan

Macau Tower Convention and Entertainment Centre

Cotai

Venetian Macau at Cotai (Parcel 1) – Podium, Expo and Energy Centre

Nape

7 250

Exhibition Centres

120 548

Casinos/ Integrated Resorts

MGM Grand Macau

29 603

Casinos/ Integrated Resorts

Cotai

City of Dreams at Cotai – Podium, Energy Centre, Theatre and Hotel B1/B2 Amenity Deck

36 589

Casinos/ Integrated Resorts

Macau

Wynn Cotai

8 900

Casinos/ Integrated Resorts

Wan Chai

Hong Kong Convention and Exhibition Centre Extension – Old Atrium Link

4 830

Exhibition Centres

Chep Lap Kok

Hong Kong International Airport – Contract 312 East Hall Expansion Works

6 340

Airports

Mong Kok

The Mall - Langham Place (URA – Development Scheme K2)

3 325

Commercial Buildings and Offices

Tsuen Wan

MTR – Drainage Improvement Works to Electronic Workshop at Tsuen Wan Depot

1 320

Railway/Metro Stations

Discovery Bay

ESF Foundation – Discovery College

4 710

Schools and Universities

Tseung Kwan O

ASD – TKO Sports Ground at Area 45 (Main venue for East Asia Games 2009)

4 780

Stadium and Sports Centers

Tuen Mun

ASD – Joint-User Complex & Wholesales Fish Market at Area 44

1 440

Public Markets

Tseung Kwan O

MTR – New Toilet for Temporary PTI at Tseung Kwan O South Station

Tsuen Wan

MTR – Upgrade Drainage System for Recreation and Office Building at Tsuen Wan Depot

Tuen Mun

MTR – Tuen Mun Workshop Roof Water Drain Improvement and Roof Repair

Chep Lap Kok

Cathay Pacific Cargo Terminal at Hong Kong International Airport

53 607

Airports

TangCity Mall, Tangerang

15 825

Commercial Buildings and Offices

HONG-KONG

120

Railway/Metro Stations

1 450

Railway/Metro Stations

540

Railway/Metro Stations

INDONESIA Jakarta TAÏWAN Tainan

Far East Department Store Commercial Building

1 873

Commercial Buildings and Offices

Taichung

Dung Shan Middle School

1 700

Schools and Universities

Kaohsiung

Kaohsiung Carrefour Shopping Mall

7 910

Commercial Buildings and Offices

Taichung

Jing Yi University

1 850

Schools and Universities

Taichung

Yung Chung Elementary School

1 280

Schools and Universities

Taichung

Toung Hai University

2 208

Schools and Universities

Taichung

AVT Apartments

1 660

Resdiential Buildings

Hsinchu

Tax Office Building

946

Commercial Buildings and Offices

Taichung

Hwa Yang Building

2 567

Commercial Buildings and Offices

Taipei

Shulin Carrefour Shopping Centre

5 795

Commercial Buildings and Offices

Taichung

Court Building

1 000

Commercial Buildings and Offices

Hsinchu

Land Bank Building

800

Commercial Buildings and Offices

Nan Tou

Pu Tai Elementary School – Gymnastics Building

5 160

Schools and Universities

Hualien

Pu Lien Building

1 180

Commercial Buildings and Offices

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EPAMS®

Stimulate your networks with EPAMS® siphonic drainage systems

Global warming and climate change are the most extensively researched and discussed topical issues affecting the environment. The associated effects are the variability of rainfall and cyclonic patterns that are being observed globally.

In the Asia/Pacific region, there is evidence of prominent increases in the intensity and/or frequency of rainfalls during summer monsoon, when droughts can be observed in winter.

Appropriate drainage of rooftops then becomes a challenge in highly developed residential, commercial and industrial areas which, due to space constraints, see the general size of the buildings constantly increasing.

Traditionally, the run-off collection from the rooftops is drained at regular points by gravity flow. The larger the roof surface, the more numerous points. Discharge downpipes are designed to flow up to a maximum of one third (literature sometimes states ½) full under the action of gravity.

For large rooftops and/or high rise buildings, drainage by gravity flow is a very inefficient way to drain water since the pressure head driving the flow is only the few millimeters (≈ 100mm) of water depth in the gutter, irrespective of the height of the building.

For these specific building projects, cast iron siphonic roof drainage system is the most appropriate to address intense rainfall. Due to projects thoroughly designed and executed, EPAMS® siphonic system is also the safest answer.

A siphonic roof drainage system is also one of the most effective technologies offered for capturing rainwater from a building roof top to aid in implementing rainwater harvesting.

Additional benefits include reduced discharge of rainwater to lakes, streams, rivers and sanitary systems, and decreased dependence on municipal water supplies.

Rainwater harvesting tank

EPAMS / 1

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EPAMS® technical principles A modern technique based on a dynamic principle.

Alternative method to gravity drainage system, the « siphonic » drainage system is designed so that the pipework can operate up to full bore during a rainstorm.

Harnessing the principle of mechanical energy conservation between the high points – rainwater outlets – and the low point which is the main drain, siphonic systems are based on Bernoulli’s Equation or energy balance relationship.

In a siphonic system the fluid has static, kinetic and potential energies that balance regardless if the individual pressure, velocity or potential energy conditions change.

Once the pipework is filled with water, the column of water in the downpipe wants to fall and the water in the horizontal collector pipe is literally sucked or siphoned and falls below atmospheric.

Siphonic systems are designed to enhance flow and exclude air from the pipework.

The EPAMS® siphonic system is a combination of original anti-vortex outlets preventing air entering the pipework and cast iron SMU pipe system designed to run 100 % full.

The EPAMS® typical pipework consists of one or several horizontal pipes installed with no gradient, connected to a downpipe.

If it happens to rain at a rate below the design DRI (Dimensional rainfall intensity), the system simply acts like a traditional gravity system with an air-water mixture at atmospheric pressure (see explanations on siphonic regimes p12).

FOCUS Operating mechanism

In case of intense rainfall, the rainwater flows towards the outlet equipped with an anti-vortex mechanism.

When the grid is half covered by rainwater -30 mmthe mechanism limits the entering of air into the pipe system and initiates negative pressure.

As the speed and the water flow increase the air entering the system decreases; it creates suction of the water into the roof outlets. When no air is entering the pipework, the drainage capacity of the siphonic system is at its optimum level.

At the bottom of the downpipe, the pipework is increased by generally two diameter sizes – causing decompression and reduction in the flow velocity.

Before connection to the main drain the system returns to gravity flow.

Fields of use Siphonic roofwater harvesting systems utilize the potential energy of the building to create negative pressure in the pipework.

Siphonic rainwater drainage system EPAMS® is ideal for: • l ow-rise buildings with a vast roof surface including airport terminals and aircraft hangers, malls, office complexes, warehouses, train stations, stadiums, convention centers and factories.

• it is also very efficient for high rise buildings.

We generally consider 3 m being the minimum height and 60 m2 the minimum roof surface (drained by a single downpipe) compatible with an EPAMS® siphonic system.

EPAMS / 2

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Advantages The first advantage is the method itself which compared to gravity has a much better absorbing capacity. A siphonic system is thus more capable of addressing intense rainfalls, regularly observed in Asia, and preventing the roof overloading.

Once the system is fully primed, there is an abrupt increase of velocity within the pipes and they flow full bore under negative pressure.

Because the system flows under pressure, the majority of the pipework can be horizontal rather than vertical. So, compared to gravity systems, siphonic velocity allows : • smaller pipe sections • long horizontal runs without gradient which can be installed very close to the roof or ceiling and reduced need for vertical pipework.

It was estimated that for the simple case of an outlet with a given diameter of vertical downpipe, a siphonic system would have approximately up to six or eight times the flowrate capacity of a conventional gravity system.

All these features mean full use of internal space and aesthetics being preserved in architectural projects.

Siphonic system EPAMSÂŽ is also made to accommodate site drainage limitations.

The harvested run-off can easily be drained to a specific location favoring water management, storage, treatment and beneficial reuse.

The global cost of a syphonic drainage system and a gravity flow are differently apportioned but siphonic systems result in a significant reduction in lengths (esp below ground pipes) and material.

EPAMS / 3

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EPAMS® technical principles Rooftop drainage in total safety In case of intense rainfall, safety rests with quick and efficient drainage.

The safety of EPAMS® siphonic systems leans on three cornerstones : • Accuracy of the design study and project follow-up, including trade coordination and installation in full compliance with the study.

• Products design: suitable siphonic outlets plus pipes and brackets able to withstand negative pressure and dynamic loading from siphonic flow.

• Clear guidance for maintenance requirements.

Design accuracy A siphonic roof drainage system is truly an « engineered system » which must be designed with careful and expert analysis. The pipework design is the key factor for performance and operational safety.

The system must always be properly balanced and the flow velocity controlled. To protect the lifespan of the EPAMS® siphonic systems, the SAINT-GOBAIN PAM design sets that the dynamic pressure within the system should never exceed 5 bar.

Trained people specifically in charge will handle your siphonic project till the acceptance of work; each change in the plans results in the need of a new study.

Before the acceptance of work, SAINT-GOBAIN PAM or a delegated third party checks on site that the installation fully meets the last study isometries; any modification on an EPAMS® pipework route at installation stage needs further approval from PAM.

SAINT-GOBAIN PAM salesmen, trained to the EPAMS® system first evaluate your roof drainage project. When feasibility is confirmed, a technical team, designs both technical study and network sizing using the dedicated EPAMS® Software.

This thorough management of the EPAMS® projects - feasibility study, project follow-up and control after installation completion – is carried out to ensure the EPAMS® system efficiency and provides the project manager with total peace of mind.

Products design Siphonic systems are sometimes considered to involve potential risks of claims and losses.

Specific care has been brought to the design of the EPAMS® outlets to enhance their absorbing capacity up to 8l/min/m2 * which corresponds to a rainfall amount of 480 mm/h.

The extended surface of an EPAMS® outlet represent 700 cm2 which can be compared to a DN300 gravity flow outlet and then means no more risk!

EPAMS® outlets are 100% metal to provide mechanical strength and durability. There is no risk of damage during insulation and waterproofing works on rooftops.

They fully comply with EN 1253 for flow capacity, watertightness, solidity, mechanical strength, resistance to heat and climatic stresses (resistance to Ultra Violet…) where most of the competitors’ are only tested on flow rates.

EPAMS® grid and the anti-vortex device are made in one piece which allows quick removal with no risk of error at reassembling and ensures easy intervention and maintenance.

EPAMS® being an all metal system is stable and serviceable in total safety, over a long period of time.

* Maximum value, specific for the Asian area

EPAMS / 4

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Maintenance Many specifiers are concerned that siphonic roof drainage systems need much higher levels of maintenance, but all roof drainage systems need adequate maintenance including gravity.

Gutters should be inspected and cleaned when appropriate twice a year and even more frequently where specific clogging risks exist (trees and airborne debris).

For EPAMS® systems, all necessary recommendations and information are described in the Technical Assessment*: biannual maintenance is highly required.

In a building project a clogged outlet could under certain conditions affect the system balance and cause damage.

The maintenance rate is fully detailed in the Maintenance Manual supplied with the study at submission stage for approval.

Specific labels are applied on the system to remind that any modification on an EPAMS® pipework route requires approval from PAM. In practice, due to the outlet design and the traditional ranges, maintenance on siphonic EPAMS® systems requires no special skills, nor specific tools.

All these factors ensure efficient maintenance and prevent potential malfunction over time.

EPAMS®: rely on the outstanding properties of the PAM cast iron systems Cast iron properties – mechanical strength and stability, thermal expansion coefficient, resistance to negative pressure, acoustic properties, resistance to fire and outstanding service life– make the EPAMS® system the best choice to design a safe and reliable siphonic system.

The installation of the EPAMS® system is generally performed by installers trained with our products.

The traditional assembly as work progresses is perfectly aligned with the reality and constraints of the job site, so that 100% of the expected performances are effectively achieved.

SAINT-GOBAIN PAM being liable for dimensioning studies they carry out, installation is thoroughly checked and technical compliance validated after inspection is completed.

EPAMS® siphonic systems have proven to be a reliable and totally safe solution over time. Specific design and procedures allowed that no claim has been registered against an EPAMS® system for the past 20 years it has been installed on projects worlwide. *The EPAMS® siphonic system is run by a Technical Assessment (5+14/14-2386), and undergoes precise controls.

EPAMS / 5

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EPAMS® technical features Hydrodynamic forces in the design of thrust blocks Traditional gravity flow systems generally operate without pressure; the anchoring strategy takes into account end thrust forces liable to occur from overloading risks and considers static fluids.

The siphonic principle is fully dependent on flow velocity. This water in motion produces forces whenever velocity or flow direction change. The forces produced are called hydrodynamic forces.

must be anchored or restrained where necessary to ensure pipework stability. The anchoring is essentially made with the installation of grip collars over clamped on the usual couplings or with self-anchored high pressure joints like GRIP HP couplings.

These devices, types and locations, are specified in the technical study and design and include a safety margin.

In a siphonic pipework, changes in flow regime or direction can cause unbalanced hydrodynamic forces. Like unbalanced hydrostatic forces, hydrodynamic forces are called thrust forces liable to drive to joint dislocation.

In EPAMS® siphonic drainage systems design, the range of fluid velocity is limited to 6 to 8 l/s. As such, the resulting unbalanced hydrodynamic forces induced are around ten times lower when compared with unbalanced hydrostatic forces.

If the couplings ensure watertightness, the jointing areas have to be secured to counteract these forces and the EPAMS® siphonic system

Formulas

F1

Thrust effect due to hydrostatic pressure*:

F2 Thrust effect due to dynamic pressure:

Tightening torque for grip collars and GRIP HP couplings PAM grip collar is so designed that it is normally not necessary to check the torque: the assembly is completed when the edges of the plates are tightened to fullest extent.

For high pressure GRIP HP couplings, the torque needs being checked.

For both types of couplings, if using a powered tool, this torque can be programmed to the minimum torque requirement. (see opposite)

* at a change of direction under alpha angle.

PAM grip collars DN

Torque

50-125

20 N.m

150-300

30 N.m

DN

GRIP HP-S Torque

GRIP HP-Inox Torque

100

20 N.m

20 N.m

125

20 N.m

20 N.m

150

30 N.m

30 N.m

200

50 N.m

30 N.m

250

65 N.m

50 N.m

300

80 N.m

80 N.m

400

80 N.m

90 N.m

500

80 N.m

90 N.m

600

120 N.m

80 N.m

EPAMS / 6

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Address end thrust forces : the specific case of watertightness test To assess the EPAMS® pipework watertightness, it may happen that a watertightness test is carried out. In this specific case, the anchoring rules and thrust blocks calculations are the ones used for a pipework liable to undergo thrust forces due to unbalanced hydrostatic forces.

Couplings alone

Grip collars on couplings

Anchoring rules to address hydrostatic pressure Straight runs of the pipework In case of accidental overloading, straight runs between two fixed points do not experience exceptional forces, grip collars are then not necessary.

Stack support pipes

The couplings will only have to address hydrostatic pressure. They generally withstand: • 5 bars for couplings like PAM Rapid S from DN 50 to 200 • 3 bars for the same couplings for DN 250 and 300

Changes of direction and specific elements End thrust forces can exert in changes of direction, gradient and specific components like branches and plugs for example. In these areas, the forces have to be addressed to avoid any risk of disconnection or slippage of the pipe system: • isolating the section subjected to thrust forces between two fixed points, like stack support pipes i.e and •a dapting the joints (selection of couplings + over clamped grip collars) between these fixed points.

End thrust force calculation:

Couplings and grip collars can be used as well as GRIP HP couplings provided that their performance is compatible with the forces entailed.

Remark: under end thrust forces, where a coupling is secured with a grip collar, the maximum performance of both is limited by the weakest performance of the two products.

Depending on the forces and site constraints, other restraints to address the forces might have to be installed on the pipework route: concrete thrust blocks or mechanically welded devices can be used alternatively to self-anchored joints.

Their resistance and shapes will be designed so that the forces entailed are adequately counteracted. They will also be designed according to their location in the building walls, ceilings beams etc… and shall comply with the relative Codes of Practice.

For deviation with angle α: Thrust force = 2 x Pressure (in bar) x Section (in cm²) x sin(α/2) i.e. At 10 bars, a 88° bend DN150 (diameter 15.2 cm) will undergo the following thrust force: 2 x 10 bars x 7.6cm x 7.6cm x π x sin (88°/2) = 2 521 daN End thrust force (daN) DN S (mm2)

Angle of bend α 22° 45° 88°

50

2 043

7.8

15.6

28.4

75

4 536

17.3

34.7

63.0

100

8 332

31.8

63.8

115.8

125

12 668

48.3

97.0

176.0

150

18 146

69.2

138.9

252.1

200

31 416

119.9

240.4

436.5

250

54 325

207.3

415.8

754.7

300

77 437

295.5

592.7 1 075.8

400

135 526

517.2 1 037.3 1 882.9

The opposite table gives the details of end thrust forces to consider for 10 m of head water column (1 bar pressure) for the PAM cast Iron bends most commonly found in each diameter Plugs are prohibited on an EPAMS® pipework and as access door pipes are designed to withstand a hydrostatic pressure according to their diameter, no special care is to consider on pipe terminations subjected to overloading.

Thrust blocks or restraints shall be calculated to resist thrust forces calculated with the above values multiplied by the pressure (in bar) to consider. These values shall be increased by a 50% safety margin (multiplying coefficient of 1.5) to avoid support bending or deformations.

For intricate bearing structures or very important thrust forces, the multiplying coefficient will be 2.

EPAMS / 7

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EPAMS® design features Focus on areas subjected to dislocation forces Like previously stated, on EPAMS® siphonic system, the unbalanced hydrodynamic forces will arise in changes of directions and specific locations where changes in the flow regime occur.

Grips collars are specified on couplings where they shall withstand dislocation forces. Grip collars like any bracketing device or fix points are used to restrain the pipework and ensure its stability.

Note: if the pipework was to be tested in watertightness all the couplings should be gripped and the end thrust forces suitably addressed (see details on p7).

To avoid overloadings, it is compulsory that siphonic drainage systems are discharged at atmospheric pressure into the main sewer drain.

At stack ends, the bottom pipe increases in diameter –generally two extra diameters – causing decompression and reducing the flow velocity.

The decompression zone is subject to high turbulences, and subsequently, every component at the bottom of the stack, before the change in flow regime, shall be gripped and the forces from the pipes weight addressed through stack support pipes.

Seeking balance of potential energy and head losses on the pipework can call for reduction of the nominal diameters to increase head losses.

Tapered pipe reducer Short access pipe Stack support pipe

Horizontal pipe connected to the outlet

Tapered pipe reducer

All the gripped components are specified in the isometries of the design study.

when expected pressure is > 0.5 bar or < - 0.5 bar.

Gravity bend

By regulation, the reduction of nominal diameter (DN) of discharge pipes is prohibited in the direction of flow, except for siphonic systems like EPAMS® (EN 12056-3 §7.6.5) where it can be useful to control the pressure level.

Increase and reduction of nominal diameters are made with the tapered pipe reducer.

Head of the stack: the negative pressure will be at its highest at the head of the stack (down to - 0.9 bar); the couplings will therefore be systematically installed with grip collars Change of direction: in changes of direction

on stacks and low collectors, the couplings will be gripped. Where a change of direction will be added or removed, SAINT-GOBAIN PAM will carry out a new study taking the new head loss into account.

On horizontal runs, the pipe reducer will be installed so that the pipe invert is continuous.

EPAMS / 8

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Specific points on the network An EPAMS® pipework consists of one or several horizontal pipes without fall connected to a downpipe: horizontal runs and stacks are made of ENSIGN- SMU S cast iron components.

The joints are made with PAM Rapid couplings or other couplings of the PAM range able to withstand a negative pressure of 900 mbar.

Connections of the roof outlets to the pipe system: Depending on the jobsite constraints, the connection can be made flat or vertical.

DN 50 Roof outlet

DN 50 Roof outlet

Minimum dimension flat branching

Minimum dimension vertical branching

Decompression zone This area where the siphonic system returns to gravity flow regime can be designed vertically or horizontally, in both cases, the air reserve shall be sufficient to break the flow speed.

In the case of vertical decompression the zone shall be a minimum of 50 cm and in the case of horizontal decompression the minimum distance requirement will be 3m.

Case n°1: Vertical decompression zone in the last metre of the stack.

Case n°2: Decompression zone directly connected to a manhole.

If the manhole is connected close to the stack, the short access pipe is optional. The potential important discharge rates shall be taken into account for the manhole sizing.

Tapered pipe reducer Short access spipe Stack support pipe Tapered pipe reducer Gravity bend

Case n°3: Horizontal decompression zone.

This solution must be considered before the design study.

Pipe support

Stack support pipes are installed at the bottom of stacks to address forces due to changes in the flow regimes.

Every 15 metres, is the general requirement.

Stack support pipe

Short access spipe Stack support pipe

Manhole cover

Tapered pipe reducer Tapered pipe reducer

Sewer main

Gravity drain

EPAMS / 9

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EPAMSÂŽ design features Pipeworks stability Stack support pipe for open slab penetrations A pipework is subjected to different forces liable to affect its stability. Stack supports are cast iron components designed to address these efforts when a stack is installed through open slab penetrations.

On straight runs, stack support pipes should be installed to address the pipes weight. At the bottom of the stack, the stack support pipe addresses both pipes weight and end thrust effort. For the last case, it is recommended that the support and fixings should be adapted accordingly.

We recommend to position the first stack support pipe at the base of the first floor, and then every subsequent fifth floor, in case of a standard average 2.5 m between floors, or more generally every 15 m.

In case of closed slab penetrations, no stack support pipe is required.

Stack support pipe with acoustic insulation The support bracket covered with rubber gasket prevents the structure- borne noise from the drainage network from radiating at the slab level.

Rubber gasket

Stack support pipe installed vertically

Stack support pipe installed horizontally

Either on cantilever arms or stack support consoles for DN 100.

Wall bracketing system in mild steel, for use with stack support pipes and brackets, is available.

EPAMS / 10

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Bracketing features The bracketing system is used to affix the pipework to the building structure.

Since EPAMS® systems are designed to operate up to full bore, the bracketing design values will always consider full pipes.

For cast iron, the bracketing system is designed to carry the weight of the pipe only and its content, which makes the specifiers’ design work easier.

To prevent dislocation, the bracketing system shall be compatible with the loads to be addressed and selected to restrain pipework movement due to flow speed.

Pipe weight in kg per metre.

DN

50

75

100

125

150

200

250

300

400

500

600

Pipe weight (kg/m)

6

11

16

24

31

54

82

113

185

278

390

Note: The technical specifications for threaded rods and metal brackets shall be established on this basis

Bracketing requirements for EPAMS® siphonic roof drainage system

Number of brackets

Because of flow speed, two brackets per pipe length shall be installed for horizontal or vertical pipework. It is also recommended to use one bracket per length or fitting (when the shape allows it, i.e branches…).

Vertical run

For the EPAMS® siphonic system, only round full and rubber lined brackets shall be used.

Horizontal run

For brackets affixed to plain threaded rods, the distance between the bearing structure (concrete slab, steel frame, etc.) and the axis of the pipe shall not exceed 500 mm. If this maximum distance could not be respected, the rigidity of the fixings should be increased (triangulation… steel knee brace).

Pipes Fittings*

2 1

Pipe length > 2 m

2

Pipe length < 2 m Fittings*

1 1

Consult local requirements for compliance. * When the shape of the fitting permits

Support for horizontal pipework

Support for vertical pipework

For siphonic pipework, the requirement for horizontal runs is two load bearing brackets per pipe. For an indication, they should be installed at 0.75 m from each spigot so that, ideally, the distance between two brackets should be 1.5m.

For EPAMS® stacks, the brackets aim at preventing the pipework to fall over but also at preventing dislocation due to flow speed. The requirement is that two brackets be fitted for each floor level. Ideally the brackets should be installed one third from the upper spigot, and one third from the lower spigot.

Due to flow velocity specific to the design for siphonic system, no gradient is required.

=

= 1,5 m mini

EPAMS / 11

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EPAMSÂŽ special features Maintenance general features Keeping the roof outlets clean is key in the good working order of an EPAMS siphonic system.

The Technical Assessment recommends they should be cleaned minimum twice a year.

Be sure the leafguard grid is in place Clean the leafguard grid

Any element like plant matters (leaves, twigs...) or debris from the surrounding can end up on rooftops and must be regularly cleared away to prevent clogging in the pipework or of the EPAMS outlets.

Remove the nut caps

Maintenance cleaning frequency will highly depend on the building environment. For buildings surrounded by trees and gardens inspections shall be more frequently done and the maintenance rate shall also be higher than the standard twice a year requirement.

Unscrew the nuts and lift the leafguard grid to remove it.

For all types of roof outlets the cleaning process has to be carried out as displayed opposite.

Special cases Welded roof outlets Clean the inside of the roof outlet bowl.

Visual inspection of the welds. Reprocess where necessary.

Outlets for membrane waterproofed roofs Inspection of the area where the waterproofing sheet or membrane and the roof outlet connects. Reprocess where necessary.

Where roofing elements have been subjected to extreme weather conditions (high winds, storms, etc.), an inspection of the roof outlets is advisable to check products integrity.

Make sure that debris are not allowed to get into the EPAMS pipework during cleaning operations Refit the anti-vortex / leafguard device according to the reverse procedure.

Explanations on siphonic regimes 1. No rain 2. R ainfall starts at low intensityâ&#x20AC;&#x201C; Drainage is made by gravity flow 3. C ontinuous flow is obtained acc. to the rainfall intensity and roof area drained 4. R ainfall intensity increases to the maximum DRI â&#x20AC;&#x201C; Flow continues by gravity until the maximum value is reached 5. N o more air entering the system â&#x20AC;&#x201C; Kinetic and pressure energies enhance quickly the absorbing capacity to the maximum design flow rate 6. R ainfall intensity stabilizes to max value => absorbing siphonic flow rate is maintained 7. R ainfall intensity decreases â&#x20AC;&#x201C; Flow comes back to gravity regime 8. Rainfall intensity stabilizes to low value => absorbing gravity flow rate is maintained 9. N o more rain â&#x20AC;&#x201C; the rooftop surface is emptying

Outlet Flowrate (l/s)

Rainfall intensity (l/min.m2) Imax = DRI

Q

Siphonic by design

Q

Max gravitary

Q

I<max gravity

Gravitary

Gravity flow

Siphonic flow

Gravity flow

Time (s)

EPAMS / 12

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EPAMS® 100% metal outlets Square plate 500 x 500

French Technical Assessment CSTB (5+14/14-2386) for Roof Outlets

Ø 340

70

The EPAMS® system is a combination of SMU / ENSIGN cast iron pipes, fittings and accessories, jointed with SMU Rapid 2® stainless steel couplings.

The EPAMS® outlets are made of 3 different parts: •T he Anti-Vortex mechanism, aluminium grating. Bolted on the bowl is the same for all the outlets.

• An identical stainless steel bowl for all the outlets, on which different components can be assembled depending on the field of use.

width 0,4

14,5 40 Ø 192

Anti-vortex mechanism Cast aluminium 400

Bowl Stainless steel Tail Stainless steel

stainless steel tail available •A in four DN: 50 – 75 – 100 – 125.

Installation­­ The EPAMS® outlets are easy to install.

The installation has to be done in accordance to the good practice and the Technical Assessment requirements.

SAINT GOBAIN PAM EPAMS® all metal outlets full guarantee mechanical strength and durability.

They totally comply with EN 1253 on every specific point: flow capacity, watertightness, solidity, mechanical strength, heat resistance and climatic stresses (resistance to Ultra Violet…)

The grating and the anti-vortex mechanism are made in one piece. This allows quick removal with no risk of mistake at reassembling, easy intervention and maintenance.

EPAMS / 13

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EPAMS® syphonic roof outlets range EPAMS® outlets to be welded - Stainless steel body, including M10 bolts - Aluminium grating

DE

Weight

Capacity

mm

kg

l/s

50

Product code 171283

58

5.4

13

Surface drainage m2 260

75

171284

83

5.7

23

460

100

171285

110

6.4

26

520

125*

172850

135

8.3

26*

520

DN

This outlet is the basis for the three next outlets, on which are grafted various elements depending on the application field See previous pages for main dimensions

EPAMS® outlets with flange - Stainless steel body, including M10 bolts - Aluminium grating - Aluminium flange

DE

Weight

Capacity

mm

kg

l/s

50

Product code 171288

58

6.2

13

Surface drainage m2 260

75

171289

83

6.5

23

460

100

171290

110

7.2

26

520

100**

206377

110

7.2

26

520

125*

172871

135

9.1

26*

520

125**

211377

135

9.1

26*

520

DN

* The advantage of the DN 125 outlet is in the “gutters” application where the water cover height can exceed the 55 mm figure (see French Technical Assessment 5+14/14-2386) ** Supplied in stainless steel 316

Elevating kits for the anti vortex mechanism Description

Dimension mm

Product code

Elevating device + anti vortex

90

171291

Elevating device + anti vortex

250

171292

Anti-Vortex device fitted to Elevating Kit.

250 mm

For roof with waterproofing protection by fine gravel or by flags on isolating layer by fine gravel.

90 mm EPAMS / 14

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EPAMS® outlets with steel plate - Stainless steel body, including M10 bolts - Aluminium grating - Stainless steel plate - 500 x 500 mm

DE

Weight

Capacity

mm

kg

l/s

50

Product code 171081

58

6.4

13

Surface drainage m2 260

75

171267

83

6.7

23

460

100

171305

110

7.4

26

520

125

172874

135

9.3

26*

520

DN

* The advantage of the DN 125 outlet is in the « gutters » application

EPAMS® outlets for flexible PVC membranes - Stainless steel body, including M10 bolts - Aluminium grating - Laminate-steel PVC plate - 500 x 500 mm

DE

Weight

Capacity

mm

kg

l/s

50

Product code 171286

58

6.8

13

Surface drainage m2 260

75

171287

83

7.1

23

460

100

171263

110

7.7

26

520

125

172876

135

9.6

26*

520

DN

* The advantage of the DN 125 outlet is in the « gutters » application

Anchoring steel plate for EPAMS® outlet with flange Description

Product code

Anchoring steel plate

172431

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EPAMS® outlets : application fields EPAMS® syphonic roof outlets range EPAMS® outlet to be welded Application field: This roof outlet is especially designed to be welded (or brazed) in gutters or in metal roof valleys

EPAMS® outlet with flange Application field: This roof outlet can be used for roofs containing extra-thick metal gutters or valleys as well as for roofs waterproofed by synthetic or bituminous membranes

EPAMS® outlet with steel plate

Technical: The plate is fixed to the roof outlet body in the factory by bonding then tightening with 6 nuts on the 6 bolts. This assembly can never be disassembled. The stainless steel plate is tinned on the two faces.

Plate size 500 x 500mm with a thickness of 0.4mm.

Application field: This roof outlet is used on all the roofs mentioned in the field of application of the French Technical Assessment 5+14/14-2386, except for those with waterproofing by synthetic membrane

EPAMS® outlet for flexible PVC membrane Technical: The plate is fixed to the roof inlet body in the factory by bonding then tightening with 6 nuts on the 6 bolts. This assembly can never be disassembled. The dimensions of the steel-PVC laminated plate are 500 x 500mm with a total thickness of 1.8mm. It consists of a galvanised steel sheet, thickness 0.62mm, covered in the factory on one face by a PVC membrane (from SIKA-SARNAFIL). The steel part contains 4-drilled holes for possible fixing to the roof. This plate is compatible with PVC-P membranes.

Application field: This roof outlet is used on non-accessible roofs and/or with equipment zones, and waterproofed by synthetic PVC-P membranes according to the manufacturer Technical Assessment.

Waterproofing is provided by a weld between the various PVC elements to seal it in a traditional way. The membrane may be visible or may be given heavy mineral protection. For this latter case, it is possible to use gravel > 15mm but in this case the roof outlet is to be fitted with an elevating kit for the anti vortex mechanism (see page 14).

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EPAMS® projects in France

Projet

Types of buildings

Surface (sm)

Date

NOUVEAU STADE DE LILLE (ETUDE 3)

Stadium ; sport arenas

66 452

06/08/2010

CENTRE COMMERCIAL AÉROVILLE

Shopping malls

47 242

24/08/2012

SATELLITE S4 CORPS CENTRAL

Airports

19 017

19/03/2010

RETAIL PARK

Logistic buildings

15 517

16/08/2011

SFR - BAT 1&2 - TRANCHE 1

Commercial buildings

14 917

01/03/2013

SATELLITE S4 AILE SUD

Airports

13 368

01/04/2010

SATELLITE S4 AILE NORD

Airports

10 730

23/02/2010

PLATEFORME LOGISTIQUE APHM

Logistic buildings

10 365

24/11/2011

DÉCATHLON OXYLANE LESQUIN

Commercial buildings

8 176

22/03/2011

STADE DE NANTES

Stadium ; sport arenas

7 820

05/07/2012

HALL D'ATHLÉTISME

Stadium ; sport arenas

7 774

07/07/2011

DUPONT MÉDICAL FROUARD

Commercial buildings

7 237

14/10/2011

STADE ARMAND CESARI

Stadium ; sport arenas

4 860

18/01/2011

PISCINE DE KIBITZENAU

Stadium ; sport arenas

4 657

18/04/2013

DÉCATHLON OXYLANE CALAIS

Commercial buildings

4 446

20/06/2011

LIAISON AC

Airports

4 010

09/11/2010

ILOT B CŒUR BASTIDE

Commercial buildings

3 876

16/11/2010

CENTRE DE FORMATION DE CAEN

Education buildings

3 702

12/09/2013

STADE DE LA ROCHELLE

Stadium ; sport arenas

3 498

28/01/2010

GALLOO PLASTICS

Recycling facilities

3 360

05/06/2012

POLE LOGISTIQUE BOURG EN BRESSE

Logistic buildings

3 068

12/07/2011

TENNIS LILLE

Stadium ; sport arenas

2 452

20/03/2014

Visit us on saint-gobain-pam-cast-iron.com

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SAINT-GOBAIN PAM Soil & Drain Business Unit Head Office & Marketing Department 91, avenue de la Libération 54076 Nancy Cedex - France Tel: +33 (0)3 83 95 20 00 Fax : +33 (0)3 83 95 29 51

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- 11/2014 I EPAMS Asia I BAT-CAT - 71 A I 2 000 ex

www.pam-cast-iron.com

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