mechanical & electrical building services · 2014-06-13 · design criteria: (the system is...

05 Mechanical & Electrical Building Services

5.1 IntroductionThis Royal Institute of British Architects (RIBA) Stage 3 Report outlines the current understanding of the mechanical and electri-cal services requirements associated with the refurbishment of Ashton Old Baths.

Following approval of this document, and receipt of Client sign-off, Stage 4 design will commence.

Prior to moving to RIBA Stage 4 it is critical that we set out the principles of the design to ensure that it meets the needs of Place First Architects, The European Regional Development Fund (ERDF) & Heritage Lottery Fund (HLF). This will enable an ap-proximate cost estimate of the mechanical and electrical services to be generated in sufficient detail to give price comfort to move forward. This document will allow formal approval by Place First Architects of the current design and cost estimate before engag-ing in the more detailed design activities and production informa-tion. This will also provide a basis for programme and an audit trail for changes.

The project will produce a suitable flexible solution that will meet the buildings objectives and be an economic, effective and value conscious solution.

Energy Consumption and Carbon Emissions

The Building Services will be designed to meet the Client/User Requirements with minimal use of energy consumption and as-sociated carbon emissions.

The building is subject to the Building Regulations Approved Doc-ument L2B (2010), and subsequent amendments including 2013 amendments which came into effect April 2014.

Building Research Establishment Environmental Assessment Method (BREEAM)

The BREEAM target rating for the project is ‘very good’.

Technical Standards

The standards detailed in section 8 will be applied, where appro-priate, to the HVAC Services provided under the project.

Design Life

Building services systems and equipment will be specified to have a design life in accordance with the recommendations of the rel-evant CIBSE Guides.

Typically this relates to a design life of 15-30 years with the ex-ception of batteries.

Building services systems are normally refurbished or replaced during the life of the building.

Existing Utility Services

GeneralThe existing utility service plans are currently being investigated for existing gas, water, electrical and Telecoms services in the vicinity of the site.

Gas InfrastructureWe assume that sufficient gas capacity shall be available for this building without any utility reinforcement due to the building lo-cation and predicted demand. Applications shall be made to Na-tional Grid in order to gain confirmation.

Electrical InfrastructureWe assume that sufficient electrical capacity shall be available for this building without any utility reinforcement however in order to make allowances for the Phase 2 development it is envis-aged that a new utility substation will be required to be provided within the building.

Applications shall be made to Electricity Northwest Ltd in order to gain confirmation.

Water InfrastructureAfter reviewing the water & drainage network plan for the area in relation to the proposed development we would advise that there appear to be waste & drainage pipes in the vicinity of the site. Applications shall be made to United Utilities in order to gain confirmation.

Telecoms InfrastructureWe assume that sufficient telecoms capacity shall be available for this building without any utility reinforcement. Applications shall be made to BT in order to gain confirmation.

5.2 Building Engineering Services

Ashton (Old) BathsStage 3 Report

The mechanical systems including heating, cooling, water serv-ices and fresh air requirements will be based on the following design criteria: (The system is based on an open plan layout).

Design Concept

As per latest information by the conservation specialist existing widows are not openable so the concept of natural ventilation is not possible as far as offices are concerned. At level 0 the open plan sitting area can be served with natural ventilation with the help of traffic flow if occupancy is limited to 20 people at a time otherwise this area will also be added in mechanical ventila-tion system with local Low Pressure Hot Water Service (LPHWS) heating by wall mounted radiators to booth seating in perimeter and toilet areas and a radiant panels serving the common areas at level 0.

Bearing in mind discussion with the building control officer and acoustic Engineer it is deemed the only solution is mechanical ventilation to avoid cross talk and control the noise from the open plan seating of the level 0. As per this ventilation strat-egy for the offices in the pod, filtered fresh air will be supplied from a central heat recovery air handling unit installed in plant room via duct work from the air handling unit to the pod accom-modated within floor channel to service risers on both sides of lift shaft. From here the ductwork will rise to serve each office levels. Fresh air will be supplied in the vicinity of the Fan coil units in ceiling void. Fan coil units will not only provide comfort cooling in summer but also heating in winter with reversible VRF heat pump system, outdoor units will be placed at roof of single storey rooms and refrigerant pipes will follow the same route as duct work (Ventilation and heating strategy drawings areattached for further illustration).

5.3 Mechanical Engineering ServicesVentilation, Space Heating, Cooling And Air Conditioning:

External design conditions

Summer:29°C dry bulb20°C wet bulb

Winter:-5°C dry bulb-5°C wet bulb

Internal design conditions

Temperatures:Offices:Summer: 22 C ± 2C.Winter: 20°C ± 2°C

Temperatures selected are in accordance with Chartered Institu-tion of Building Services Engineers (CIBSE) recommendations.

Fresh air supply and ventilation rates

Ventilation strategy is based on a sealed and controlled environ-ment, 10 l/s/person - 1 person per 10.0m2 (BCO) plus 10% spare capacity.

Rate selected are in accordance with Part F of the current Build-ing Regulations.

Toilets: Six air changes per hour extract minimum

Noise:

The HVAC design will meet following criteria

Offices NR35WC’s NR40

Filtration:

Mechanical ventilation systems shall provide final particulate fil-tration to EU7 standard.

Offices:

The Offices shall be designed to CAT A fit out standards, Fresh Air will be supplied by Air handling with the help of duct work to each space as per 10 l/s per person on a floor by floor basis as a sealed building to include comfort cooling and heating.

Heating

Low temperature hot water level 0

LTHW will be sourced from the energy efficient condensing boiler (flue position to be agreed) coupled to a solar thermal solution. All LTHW boiler, pumps and ancillaries shall be located within the plant rooms. LTHW shall provide heating by radiators in booth seating perimeter areas in level 0 and WC’s. It will also be used to provide heat through Radiant Ceiling panel or under floor heating in the open plan common area at level 0.

VRF heating and cooling in the pod offices

All offices in the pod will be heated and cooled with VRF heat pump system

Domestic Water Installation

Coldwater shall be stored in water tanks, located at high lev-el and distributed via risers, complete with an automatic water pressure booster pump set. Units shall be located within a plant room. Domestic hot water will be sourced by condensing boiler coupled to a solar thermal solution.

Drainage Installation

Subject to a survey, vertical soil stacks shall be provided to serve all areas. All above ground drainage shall be installed to comply with BS 12056:2000 and the requirements of the LocalAuthority Inspector.

Acoustic insulation will be employed as necessary where stacks drop in sensitive areas.

The building shall be served by either a gravity or symphonic rainwater system which may be connected to a rain water recov-ery system.

Sprinkler System Office

(Refer to fire engineering solution WSP): On-going at Stage B.A Sprinkler System shall be installed to serve the building to sat-isfy requirements. The Life Safety Ordinary Hazard Group shall be confirmed, however due to the intended travel distances this may be Ordinary Hazard group 3.

Natural Gas

A Natural gas is require to serve condensing boiler(s) proposed to provide the heating source for the radiators and radiant panel heating circuit as well as hot water supply to the toilets andKitchen. A gas service shall be applied for from local provider.

Automatic Controls Installation

Provision shall be made for a Building Energy Management Sys-tem which shall provide control both centrally and as required remotely for the complete HVAC systems for the development. Energy monitoring facilities shall also be made available for me-tering of incoming services from pulsed meter supplies and zones as required by building regulation.

All landlord Primary services shall be metered via the BMS.

Smoke Ventilation

In conjunction with the fire consultant WSP, a system of smoke ventilation may be required for escape stairwells and ancillary areas. Please refer to separate specialist report.


5.4 Electrical Engineering ServicesDesign Concept

The electrical systems shall be selected & provided to suit the use and layout of the existing and new structure in a sympathet-ic & complimentary manner. The electrical installations shall be provided in accordance with the building regulations and British Standards. Generally the systems shall utilise low energy equip-ment such as LED lighting along with intelligent control to con-serve energy usage. Energy consumption of large items shall be metered separately.

Lv Supply

Electrical power will be derived from the local utility provider. A new LV metered TP&N utility supply shall be applied for the build-ing or the existing utility supply shall be upgraded to serve the requirements of the building if suitable. This project only covers phase 1 of the development however phase 2 should be con-sidered when determining the power requirements and it is as-sumed that a new electricity substation will be required to serve both phases of the development.

Lv Distribution A new MCCB section board shall be provided within a switch room as indicated on the electrical layouts, the new MCCB section shall be supplied from the new utility supply. Sub distribution for the offices in the new pod construction shall be via underground ducting to the new risers located on either side of the lift shaft. Supplies shall be derived from distribution boards within the risers to each of the tenant demises. Metering shall be in accordance with Part L of the building regulations. Local landlords distribution boards shall serve the rest of the building. A switch room shall be allocated in a suitable location to house the incoming supplyand main distribution equipment. At this stage allowance for the switch room should be approximately sized at 3m x 3m.

Small Power

A complete new small power system will be provided throughout the building to generally consist of:-

- Electrical distribution equipment and final distribution MCB boards- 230V 13A Twin/Single switched socket outlets for general and computer use- 230V 13A single switched socket outlets for cleaning and maintenance.- 230V 13A switched fused connection units to items such as hand dryers, urinal flushing systems within toilets etc.- Supply to all IT computer hub units etc.- Electrical supplies to water heaters/water boilers/hand dryers- Lift supply- Power to panels, mechanical plant & equipment as required.

A dado trunking system shall be provided within the offices pods for all power and data requirements.

All socket outlets and circuits designated for computer use will be provided with high integrity earthing, i.e. socket outlets complete with dual earth connection and dual earth connections in the lo-cal distribution boards to include a warning label.

All items of mechanical plant/equipment requiring an electrical supply will be provided with a means of local isolation. Power and control supplies will be installed to all mechanical services plant and equipment.

The circuits will be dedicated to the equipment they serve and will be fed from a suitable sub distribution power board.

The above is not meant as an exhaustive list but to illustrate the various power supplies that will be required.

Cable Containment

The building will incorporate suitable cable containment systems throughout to carry all the various cable types e.g. power, data, fire alarm etc.

It is envisaged that cable containment shall be provided in the following forms:-

- Dedicated galvanised steel trunking combined with steel conduit for enclosing final circuit low smoke and fume small power and lighting cables- Under floor pvc cable ducts shall be provided to contain sub main cabling from the switch room to the office pod risers.- Dedicated proprietary steel cable basket systems will be employed for LSF data/voice cabling.- Fire alarm cabling will be installed on a dedicated galvanised steel cable tray system.

The main routes and type of primary cable containment shall be confirmed at the next stage of design.

Generators & Back Up Power

Not expected to be required at this stage, however space allow-ance shall be provided for the phase 2 requirements.

General Lighting

Office areas

Lighting shall be automatically controlled to react to the pres-ence of personnel and the amount of natural light available, by automatically altering the output from individual or groups of luminaires to maximise operational efficiency and convenience. Luminaires shall be suspended types utilising LED lamp technol-ogy with light outputs suitable for an office environment.

Control of the office area lighting shall be provided in zones on the basis of a combination of occupancy control via PIR sensors, daylight linking, absence detection and conventionalswitching as required.

Main circulation areas

A combination of lighting types shall be provided to compliment the area of illumination. It is proposed that recessed/surface mounted or suspended luminaires shall be provided within thecentral hub area, seating booths and perimeter rooms depend-ent on the ceiling or building fabric available for installation. It is proposed that floodlighting shall be provided and fixed to the external façade of the pod construction for up lighting the inter-nal features of the existing building.

Control of the main area lighting shall be daylight linked, and switched via a management system.

Emergency Lighting

Emergency lighting will be provided throughout the building to the current British Standards to meet the recommendations of BS 5266.

Emergency lighting will be provided to cover escape routes and open areas to facilitate evacuation in the event of total power failure.

External Lighting

External lighting shall be provided to illuminate the features and branding of the building.

These requirements shall be discussed at the next stage.

Lightning Protection

The existing lightning protection system installed on the building shall be inspected to verify compliance with the current stand-ards, remedial works shall be provided to any areas of thesystem which fail to meet current standards.

Fire Alarm System

An automatic fire alarm system is proposed to be provided throughout the building. It is envisaged the system will be based on an analogue/addressable fire alarm system consisting of:-

- Main fire alarm panels- Manual call points- Automatic point detection- Beam detection or aspirating pipework at high level.- Sounders/flashing beacons

The category of fire alarm system shall be dictated by the fire strategy and building insurers.

The requirement of a redcare or similar system shall be discussed at the next stage.

CCTV

The CCTV requirements shall be discussed at the next stage

Intruder Alarm

It is proposed that an intruder alarm system shall be provided to cover all entrances to the building along with PIR detection in certain areas. The detailed requirements of the system shall be discussed at the next stage.

Comms / Data

The comms/data requirements shall be discussed at the next stage.

Access Control

The access control requirements shall be discussed at the next stage.


5.5 BREEAMThe building is required to become BREEAM certified to ‘Very Good’. It is our understanding that the works can be classed as ‘Major Refurbishment’, as defined by the BRE, and so be as-sessed under BREEAM Offices 2008.

A Pre Assessment BREEAM workshop with the Project Team will be held at the earliest opportunity to determine the potential score and BREEAM rating for the building. The BRE Pre Assess-ment tool will be completed and issued to the design team fol-lowing the workshop, together with the evidence requirements for all credits targeted. This Pre Assessment report will sum-marise the actions from the workshop, including the measures and commitments from the design team. It will highlight the opportunities and risks of credits associated with the proposed BREEAM strategy, the minimum standards required for achiev-ing a ‘Very Good’ rating and the specific issues associated with a shell and core assessment. It is expected that review of evidence is only required during the formal (Design/ Post Construction) assessment stages.

A single round of design team comments will then be request-ed for feedback through the agreed point of contact within one week. The draft Pre Assessment report will be revised and is-sued formally to the client and design team after receiving the team’s comments, incorporating an agreed projected score. The BREEAM issues identified as targeted and the overall projected score will be carried through into detailed design by the contrac-tor and design team.

After instruction has been received to commence the Formal BREEAM assessment (Design and Post Construction stages) the assessor will attend to an initial meeting to discuss the PreAssessment report. Following this, the assessor will compile and issue a BREEAM Tracker document identifying credit evidence requirements, team member responsibilities, outstanding evi-dence required and actions to be undertaken.

The project team and contractor will then be required to produce to the Assessor documentary evidence that complies with the cir-culated evidence schedule for each BREEAM issue, to prove com-pliance with the BREEAM criteria. Evidence required is normally submitted in two phases to the assessor by the project team: a complete evidence file for the BREEAM Interim Assessment at Design Stage (DS) and a further complete evidence file for the Fi-nal BREEAM Post Construction Stage (PCS) Assessment (both in electronic format), provided to the assessor via the agreed point of contact. The BREEAM Tracker document will track the flow ofevidence as the assessment progresses. This will be updated and re-issued once prior to the interim report submission to the BRE and once again prior to the final report submission.

Once the BREEAM DS assessment is approved and Quality As-sured (QA) by BRE, an Interim certificate will be issued to the assessor. The Assessor will undertake a Site Inspection reportas part of the PCS process which examines the as-built develop-ment. Once the BREEAM PCS assessment is approved and Qual-ity Assured (QA) by BRE, a Final BREEAM certificate will be issued to the assessor.

The following describes the Mechanical & Electrical services which require design input from the appointed Mechanical & Electrical Sub-Contractors, and the interface between the Mechanical & Electrical Sub-Contractor, the Main Contractor and the Clients design team.

This should be read in conjunction with BSRIA BG 6/2009 (A Design Framework for Building Services) which forms part of BSRIA’s ongoing research into the contractual issues which arise within the design process associated with building services and indicates appropriate splits in duties and responsibilities.

In relation to the CDP works for the project these are interpreted and summarised as follows:

• BMS & Controls• Lightning Protection System• Secondary cable containment systems• Brackets and Fixings

BMS & Controls

The Mechanical Sub-Contractor will appoint a BMS specialist to undertake the detailed design, supply, install, test and commis-sion the BMS system to include control panels, power cabling, control cabling, control equipment, outstations, interfaces and programming. All electrical power supplies associated with plant and equipment which emanate from HVAC control panel shall be the responsibility of the BMS controls specialist.

The specialist shall pass the design to the design team for com-ment. Upon confirmation to proceed the specialist shall supply, install, test and commission the BMS system.

5.6 CDP Elements

Lightning Protection

The contractor will employ the services of a lightning protection specialist to carry out the inspection and if required design, sup-ply, install and commissioning of a new lightning protection sys-tem to comply with BS EN 62305 for the refurbished building.The specialist will undertake a soil resistivity test as part of the risk assessment to confirm the soil type.

The specialist will be responsible for undertaking a lightning pro-tection risk assessment calculation in line with BS EN 62305-2 utilising an industry approved software package. This will deter-mine the level of protection required.

Secondary Containment System

This will relate to all primary containment routes comprising tray, ladder and trunking installations. Excluded from this will be sec-ondary cable containment.

The Electrical Sub-Contractor shall be responsible for the final sizing and selection of secondary cable containment comprising of final tray/trunking/conduit routes and for including the details on their installation/working drawings.

Brackets & Fixings

The sub-contractor shall be responsible for providing all neces-sary brackets and fixings for ductwork, pipework and electrical containment which shall be installed at intervals in accordance with the respective manufacturer’s recommendations.

General

Consideration will be given during the design stages to the main-tenance requirements of the M&E installations and will lead to discussions with the building operators during the detaileddesign period.

The provision of adequate access around plant is imperative for any maintenance operations and will lead to an appropriate plant selection, orientation and system fit.

Co-ordination of the services will include analysis of access to removable or serviceable parts as well as special separations.The selection of all plant will be optimised against the following criteria:-

• Reliability of Manufacturer and / or Supplier;• Service Life Guarantees or MTBF indications;• After Sales Service and availability of recognised / approved service procedures;• Cost / availability of parts;• Life cycle costs;• Energy efficiency;• Construction quality matches the environment and location of plant (IP, fire rating,corrosion resistance, acoustic properties etc.);• Quoted performance is verifiable and complies with applicable standards;• Periodic maintenance frequency is acceptable to end user.

Key activities during stage E include:

• Meetings with Utility providers to determine incoming supplies• Meetings with client to determine all specialist systems• Ongoing meetings with design team to co-ordinate M&E serv-ices• Development of M&E calculations• Development of M&E detailed design drawings• Compilation of M&E tender documentation

5.7 Plant Replacement And Maintenance Strategy

5.8 Stage 4 Activities


General

The following standards will be applied, where appropriate, to the M&E Services provided for the refurbishment of Ashton Old Baths:-

British Standards and other related Documents

• All relevant British Standards and Codes of Practice;• IEE Wiring Regulations BS7671:2008 (including all amend-ments)• CIBSE Guides;• CIBSE Lighting Guides;• Electricity at Work Regulations 1989;• Health & Safety Act;• Building Regulations;• Fire Officer Requirements;• Local Authority Requirements; and• The installations will comply with NICEIC & ECA standards.

Note that the above list is not exhaustive and does not preclude the application and implementation of other appropriate stand-ards.

5.9 Technical Standards

Ventilation Strategy Layouts

M101 - Ventilation Strategy Level 0M102 - Ventilation Strategy Level 1M103 - Ventilation Strategy Level 2M104 - Ventilation Strategy Level 3

Heating Strategy Layouts

M111 - Heating Strategy Level 0M112 - Heating Strategy Level 1M113 - Heating Strategy Level 2M114 - Heating Strategy Level 3

Domestic Water Supply Strategy

M121 – Domestic Water Supply Strategy

Small Power Strategy Layouts

E101 - Small Power Strategy Level 0E102 - Small Power Strategy Level 1E103 - Small Power Strategy Level 2E104 - Small Power Strategy Level 3

Lighting Strategy Layouts

E111 - Lighting Strategy Level 0E112 - Lighting Strategy Level 1E113 - Lighting Strategy Level 2E114 - Lighting Strategy Level 3

5.10 Drawings

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D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-11

3 T1

28/05

/2014

16:01

:57


Purpose of issue

PRELIMINARY

PLACE FIRST


LEVEL 2PROPOSED SMALL POWER

& FIRE ALARM LAYOUT


1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTESLEGEND

C

FAP

IAP

S

2

H

S

2 2 2 2 2 2

2 2 2 2 222 2

2 2 2 2 2 2

CSS

S S

S S S S

S S

SS

Drawing Number Rev



Drawing Title

SuffixBy


Project Title

Client

Suitability


Plot

Date

:Fil

e Nam

e :I:\A

SHTO

N OL

D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-11

2 T1

28/05

/2014

16:02

:48


Purpose of issue

PRELIMINARY

PLACE FIRST



& FIRE ALARM LAYOUT


1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTESLEGEND

C

FAP

IAP

S

2

H

2 2

2 22

2

C

C C

C

HRV FAPIAP

C

H S

SS S

Drawing Number Rev



Drawing Title

SuffixBy


Project Title

Client

Suitability


Plot

Date

:Fil

e Nam

e :I:\A

SHTO

N OL

D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-11

1 T1

28/05

/2014

16:03

:41


Purpose of issue

PRELIMINARY

PLACE FIRST



& FIRE ALARM LAYOUT


1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTESLEGEND

C

FAP

IAP

S

2

H

Drawing Number Rev



Drawing Title

SuffixBy


Project Title

Client

Suitability


Plot

Date

:Fil

e Nam

e :I:\A

SHTO

N OL

D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-10

4 P1

28/05

/2014

15:58

:31


Purpose of issue

PRELIMINARY

PLACE FIRST


LEVEL 3PROPOSED LIGHTING STRATEGY


1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTES

Drawing Number Rev



Drawing Title

SuffixBy


Project Title

Client

Suitability


Plot

Date

:Fil

e Nam

e :I:\A

SHTO

N OL

D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-10

3 P1

28/05

/2014

15:59

:59


Purpose of issue

PRELIMINARY

PLACE FIRST




1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTES

Drawing Number Rev



Drawing Title

SuffixBy


Project Title

Client

Suitability


Plot

Date

:Fil

e Nam

e :I:\A

SHTO

N OL

D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-10

2 P1

28/05

/2014

15:59

:17


Purpose of issue

PRELIMINARY

PLACE FIRST




1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTES

Drawing Number Rev



Drawing Title

SuffixBy


Project Title

Client

Suitability


Plot

Date

:Fil

e Nam

e :I:\A

SHTO

N OL

D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-10

1 P1

28/05

/2014

15:57

:08


Purpose of issue

PRELIMINARY

PLACE FIRST




1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTES

S

2 2 2 2 2 22

C

S

S

Drawing Number Rev



Drawing Title

SuffixBy


Project Title

Client

Suitability


Plot

Date

:Fil

e Nam

e :I:\A

SHTO

N OL

D BA

THS\

08-B

IM_C

AD\08

.1-W

IP\08

.1.1-

CAD\

08.1.

1.5-E

LEC\

E-11

4 T1

28/05

/2014

16:01

:09


Purpose of issue

PRELIMINARY

PLACE FIRST



& FIRE ALARM


1:100

P.T. S.L. B.K. MAY 2014

Suitability

Zone / Mileage

www.urscorp.eu


NOTESLEGEND

C

FAP

IAP

S

2

S