accomodation - new

8/9/2019 Accomodation - New

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ACCOMODATION OF

SERVICES


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INTRODUCTIONINTRODUCTION

Accommodation of services is very important during designstage.

A proper planning is needed in order to ensure the safety and

location of the services are strategic and easy to be foreseen bythe people in the building.

Each building will not provided adequate functionality if theservices is not accommodated in the right way.

Accommodation of services is very important to ensure the safetyof the services.

Method of installation also plays an important role to ensure

adequate functionality


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ProvisionofServices

Above the structural slab

- electrical conduit laid on top of slab after it is cast

- top screeding must be thick enough to bring finish

floor level above that of the conduit

- fibre or metal under floor ducting for electrical

especially telephone wiring may be used

- to reduce weight use lightweight concrete or

foamed mortar


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ProvisionofServices

Below the slab or below it supporting beam

- ribs or secondary beams on the underside

of the floor pipes may be suspended fromthe slab or rib soffit

- concealed with suspended ceiling at the

level of the rib or beam soffit


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Service Ducts

Ducts for service pipes and cables must run

both vertically and horizontally through the

building.

The horizontal ducts usually follow route of

corridors to allow ease of access, and may

be between false ceiling and the structural

floor.


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ELECTRICALELECTRICAL

AIRAIR--CONDITIONINGCONDITIONING

FIRE PROTECTIONFIRE PROTECTIONSYSTEMSYSTEM

TELECOMMUNICATIONTELECOMMUNICATION

TYPES OF

SERVICES


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TYPES OF SERVICESTYPES OF SERVICES


Electrical ProtectionElectrical Protection

BusbarBusbar TrunkingTrunking

AIRAIR--CONDITIONINGCONDITIONING

DuctingDucting

Concealed InstallationConcealed Installation

FIRE PROTECTION SYSTEMFIRE PROTECTION SYSTEM

Method of InstallationMethod of Installation

TELECOMMUNICATIONTELECOMMUNICATION


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AA wiringwiring systemsystem isis aa methodmethod ofof installinginstalling thethe electricalelectrical

conductorsconductors inin thethe buildingbuilding..

ItIt mustmust provideprovide supplysupply ofof electricityelectricity wherewhere requiredrequired withwithcompletecomplete safety,safety, reliability,reliability, protectingprotecting thethe buildingbuilding andand itsits

contentscontents fromfrom thethe riskrisk ofof damagedamage byby firefire andand protectprotect thethe

occupantsoccupants fromfrom injuryinjury formform shockshock..

AllAll wiringwiring systemssystems mustmust bebe providedprovided withwith electricalelectrical

protectionprotection..

ElectricalElectrical protectionprotection cancan bebe providedprovided inin twotwo waysways..


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ELECTRICAL PROTECTIONELECTRICAL PROTECTION

By providing continuous channels in or on the walls andfloors of the building, formed during construction. They

may be formed by:

i. In parts of the building structure, in the form of ducts,channels and chases.

ii. By shallow metal or fibre ducts and later covered with

concrete screed of plaster.

iii. Running special trunking.


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ELECTRICAL PROTECTIONELECTRICAL PROTECTION

By providing the cables themselves with

sufficiently strong protection sheath of

suitable material. Types of sheating are:

Tough rubber sheath

Polychloroprene sheating

Plastic sheating Lead alloy sheating


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BUSBAR TRUNKING SYSTEM

Busbar trunking system is a totally enclosedelectrical distribution system comprising solidconductors separated by insulating materials.


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BUSBAR TRUNKING

Distribution Trunking

i. Usually applied to distribute power over apredetermined area.

ii.

The busbar trunking can be run vertically orhorizontally or a combination of both.

iii. Power is taken from the busbar trunking by the use oftap off units which connect at defined positions alongthe busbar trunking and allow power to be taken form

the system usually via a suitable protective device.


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Feeder Trunking

For interconnect between switchboards or between

switchboard & transformer

More economical to use


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BUSBAR TRUNKING SYSTEMBUSBAR TRUNKING SYSTEM


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Electrical conduits are installed under the mechanical room slab floor.


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Underground electrical duct is installed.


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Fiber optic cable installation


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AIR CONDITIONINGAIR CONDITIONING

Air conditioning is the control of temperature and humidity in a

building as well as the cleaning of particles from the air.

The type of air-conditioning system that is being studied is

Split Unit System.

As the name suggests, a split system is an air conditionerwhich has been 'split' into two sections - an indoor 'evaporator'

unit and an outdoor 'condenser' section.

There are several accommodation method adopted for air-

conditioning :

i. Ducting

ii. Concealed installation


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DUCTING

Air conditioning ducts are the most cost effective and

efficient method of conveying cold air from point to

point, and distributing it where its needed.

Air conditioning ducts are manufactured from

lightweight polythene, and are compatible with most

air conditioners, evaporative cooler and fans.


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DUCTINGDUCTING

Air conditioning ducting (silver) installed in the ceiling


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CONCEALED INSTALLATIONCONCEALED INSTALLATION

ConcealedConcealed underunder thethe surfacesurface ofof walls,walls, floors,floors,beamsbeams oror aboveabove thethe ceilingceiling etcetc..

InstalledInstalled toto wallswalls beforebefore plasteringplastering workworkcommencecommence..

AlsoAlso cancan bebe mountedmounted toto wall,wall, ceilingceiling andand floorfloor..

ForFor thethe externalexternal 'condenser''condenser' unitunit hashas oneone or or twotwofansfans itit maymay bebe locatedlocated onon thethe roof,roof, onon aa wallwallbracketbracket oror inin anyany of of aa numbernumber ofof otherother location,location,

completelycompletely concealedconcealed..


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CENTRAL AIR CONDITIONER -

SINGLE UNIT

This installation has a connecting duct throughthe outside wall of the house into one end ofof

thethe airair conditioner,conditioner, withwith thethe existingexisting ductworkductworkofof thethe househouse connectedconnected toto thethe otherother sideside..


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CENTRAL AIR CONDITIONERCENTRAL AIR CONDITIONER --

SINGLE UNITSINGLE UNIT


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FIRE PROTECTION SYSTEMFIRE PROTECTION SYSTEM

There are several types of fire protection systeminstalled in the building such as :

i. Fire alarm system

ii. Hose reel

iii. Portable fire extinguisher

The accommodation for fire protection system

includes :i. Surface installation

ii. Concealed installation


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METHOD OF INSTALLATIONMETHOD OF INSTALLATION

i)i) Surface InstallationSurface Installation

Installed on the surface of walls and soffit ofInstalled on the surface of walls and soffit of

ceilings.U

sually used for wiring using conduits.ceilings.U

sually used for wiring using conduits.

Example fixed to walls, ceilings, beams, etc.Example fixed to walls, ceilings, beams, etc.


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METHOD OF INSTALLATIONMETHOD OF INSTALLATION

ii) Concealed Installationii) Concealed Installation

Concealed under the surface of walls,Concealed under the surface of walls,

floors, beams or above the ceiling etc.floors, beams or above the ceiling etc.

Installed to walls before plastering workInstalled to walls before plastering workcommence.commence.

Also can be mounted to wall, ceiling andAlso can be mounted to wall, ceiling andfloor.floor.


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FIRE SAFETY SYSTEM


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PREVIOUS EXAM QUESTIONSPREVIOUS EXAM QUESTIONS

The large number of services and extensive equipment requiredThe large number of services and extensive equipment requiredin many types of building necessitates early consideration ofin many types of building necessitates early consideration ofmeans of housing them both vertically and horizontally. Explainmeans of housing them both vertically and horizontally. Explainand illustrate the FOUR (4) methods of accommodating servicesand illustrate the FOUR (4) methods of accommodating servicesas described.as described.

Services can be accommodated in THREE (3) ways i.e. aboveServices can be accommodated in THREE (3) ways i.e. abovethe structural slab; within its actual thickness and below the slabthe structural slab; within its actual thickness and below the slabor below its supporting beam. Explain briefly the circumstancesor below its supporting beam. Explain briefly the circumstancesand method for each of the above provisions of services in floors.and method for each of the above provisions of services in floors.

The methods of accommodating electrical services across theThe methods of accommodating electrical services across thefloor will depend to some extent on the type of floor. Suggest, byfloor will depend to some extent on the type of floor. Suggest, byjustifying its suitability, and explain with the aid of sketches TWOjustifying its suitability, and explain with the aid of sketches TWO(2) alternative methods of accommodating such services across(2) alternative methods of accommodating such services acrossthe floor.the floor.


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YOUR TASK

Please update the notes withthe required sketches/

drawings or photographs....

TQ!

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