Engineering Services Planning Limited Integrated M&E building services planning presentations Planning support for the construction industry in order to:

Engineering Services Planning Limited

Integrated M&E building services planning presentations

Planning support for the construction industry in order to:

• Provide an insight into M&E building services planning

• Assist in the development of M&E overview programmes

• To integrate these with construction programmes


Presentation Number 01

Identification and Coordination of M&E Building Services

Part 1 - Introduction to the M&E Services

Part 2 - Coordinated Services

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Part 1 - Introduction to the M&E Services

• What are the Key Mechanical & Electrical (M&E) building services?

Key Mechanical Services

• Heating - Low temperature hot water (LTHW) supplied by boilers and pumps via pipe work systems -

feeding radiators, heaters, air conditioning systems (HVAC) and fan coil units (FCU’s)

• Cooling - Chilled water (CHW) supplied by chillers and pumps via pipe work systems - feeding air

conditioning systems (HVAC) and fan coil units (FCU’s) and cooling units for electrical switch rooms

• Gas – Generally used to supply the boilers and fit out kitchens

• Drainage - Soil & vent and rainwater draining into sumps and sewers controlled by pumps via pipe work

systems

• Water services - Water supplies for domestic use and plant services – stored in tanks & supplied by pumps

via pipe work systems

• Fire Protection - Sprinklers and wet/dry risers – stored in tanks & supplied by pumps via pipe work systems

(wet risers have pumps, dry risers do not have pumps for fire service use)

• Heating Ventilation & Air Conditioning (HVAC) - Supply & extract air – supplied & extracted by air handling

units (AHU’s) & fans via ductwork systems• GHG


Key Electrical Services

• High Voltage cables (HV) - Incoming supplies from electrical utility companies

• High Voltage cables (HV) - Supplies from electrical HV switch rooms to electrical LV switch rooms

• Low Voltage cables (LV) - Supplies from electrical LV switch rooms to main mechanical plant and main

mechanical plant control panels

• Low Voltage cables (LV) - Supplies from electrical LV switch rooms to electrical distribution boards,

equipment and control panels

• Electrical Containment - Ladder rack, cable tray/basket, trunking and conduit for installation of electrical

services

• Busbars – Utilised to feed heavy duty plant items and multiple electrical supplies such as electrical risers

• Lighting & Small Power - Outgoing electrical circuits from distribution boards and control panels

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Engineering Services Planning LimitedUtility Supply Switch Rooms

HV Switch Rooms

LV Switch Rooms

TXSection 1 Section 2

Section 1

Utility Supply 2

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Typical HV Switch Room and Cabling Arrangement

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HV Cable

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Level B1

Section 2

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Utility Supply 1

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HV Cables

HV Cable

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LV cables

Mechanical plant control sw itches

Electrical riser Electrical riser

Landlord sw itchpanel LLV1

Section 1 Section 2

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B2 level

Cable link

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Overview of a typical HV cable installation Overview of a typical LV cable installation GHG


Special Systems

In addition to mechanical and electrical there are other services banded together under the title of Special Systems.

• Fire & Voice Alarm (FA/VA) – Fire Detection & Alarm

• Security - Building access control and CCTV

• Building Management System (BMS) - Building mechanical systems control and monitoring

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Electrical Containment Installed by the Electrical Contractor

• HV ladder rack• LV ladder rack/cable tray• Trunking & conduit• FA/VA primary cable tray/basket• BMS primary trunking/cable tray• Security primary trunking

Electrical Containment and wiring Installed by other M&E Contractors

• FA/VA secondary cable tray/basket/conduit & wiring - Installed by the FA/VA contractor

• BMS secondary trunking/cable tray/conduit & wiring - Installed by the BMS contractor

• Security secondary trunking/conduit & wiring - Installed by the security contractor• Mechanical plant containment & wiring - Installed by the mechanical contractor• HVAC plant containment & wiring - Installed by the ductwork contractor• Fire protection plant containment & wiring - Installed by the fire protection contractor• hgh


Electrical Containment

Part 2 – Coordinated Services

When planning the coordinated installation of M&E building services the important factors to consider are: 1. Start on Site and Area Availability

2. Primary M&E Services Routes

3. Primary M&E Services Coordination

M&E Services Risers – Topic of a further presentation

M&E Plant and Switch Rooms – Topic of a further presentation

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1. Start on Site and Area Availability

Questions:

2. What would constitute a meaningful commencement for the M&E services?

3. What would constitute a plant or switch room release (Room Ready) for the M&E services?

Answers:

4. Meaningful Commencement

• The predetermined start on site date for M&E building services does not want to be over ambitious.

• The project build sequence and logistical plan will need careful consideration to realistically identify what the site conditions are going to be at that future point in time.

• It may be worthwhile deferring the M&E services commencement date and reducing the overall duration in order to provide better access, more work faces and less concurrent working with construction trades.

• Starting piecemeal works in ad hoc areas will create confusion as to the meaningful commencement date.

• If there is only one notice to proceed the M&E contractors overall contract duration commences from that date.

• Typically the M&E services would follow the completed block work in agreed areas, with builder’s work holes formed and plinths constructed (if required at that point)

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2. Room Ready

Room ready dates can be subjective regarding their suitability of handover for M&E contractor’s commencement. A room ready list should include:

• Walls, floor slabs and soffit construction complete including the builder’s work holes

• Area clean and debris free

• Walls, floor slabs and soffit dry and watertight

• Plant plinths and bund walls complete

• Floors sealed and walls mist coated

• Safety aspects such as edge protection and barriers addressed

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2. Primary M&E Services Routes Questions:

1. What is a primary M&E services route?

2. Where are the primary M&E services routes?

3. What are the key M&E plant and switch rooms and where are they located?4. GHG


Answers:

1. A primary M&E services route is a group of M&E systems forming:

• A link between mechanical plant rooms in basement areas

• A link between electrical switch rooms in basement areas

• A link from mechanical plant rooms in basement areas to mechanical riser locations

• A link from electrical switch rooms in basement areas to electrical riser locations

• Mechanical riser installations

• Electrical riser installations

• A link from mechanical risers to mechanical plant rooms on upper floor levels

• A link from electrical risers to electrical switch rooms on upper floor levels

2. The primary M&E services routes are located in:

• Corridors adjacent to plant/switch rooms

• Arterial corridors around and through central core areas

• Specific mezzanine floor levels

• Plant and switch rooms

• Vertical risers

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Mechanical Plant Room

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Ventilation duct work

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Electrical containment

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Typical basement mechanical plant and electrical switch rooms layout plus the locations of vertical risers

Corridor

Corridor

Corridor

Corridor

3. Some of the plant and switch rooms indicated in the table below would be repeated on other floor levels.


Title Location

Chiller Plant Room (Mechanical) Basement – otherwise roof level

Boiler Room (Mechanical) Basement – otherwise roof level

Fire Protection Plant Rooms (Mechanical) Basement

Domestic Water Plant Rooms (Mechanical) Basement and Roof Levels

Generator Plant Rooms (Electrical) Basement – otherwise roof level

Utility Incoming Substations (Electrical) Basement

Landlord HV Switch Rooms (Electrical) Basement

Landlord LV Switch Rooms (Electrical) Basement and Roof Levels

Supply Air Plant Rooms (Mechanical) Basement and Roof Levels

Stair/Lift Pressurisation Plant Rooms (Mechanical) Basement and Roof Levels

Cooling Towers (Mechanical) Roof Level

Car Park Supply & Extract Plant Rooms (Mechanical) Basement

Plant Rooms Supply & Extract (Mechanical) Basement and Roof Levels

Examples of primary M&E services routes:

• A pipe work link between a chiller located in the basement and its cooling tower located on the roof

• A pipe work installation from a boiler room or a chilled water plant room feeding numerous items that

require heating & cooling properties

• Ventilation duct work from a plant room connected to other duct work in a vertical riser

• Ventilation duct work from a plant room supplying and extracting air to other plant rooms

• Containment and cables installed between electrical switch rooms located in the basement and upper

floor levels

• Containment and cables installed from electrical switch rooms to mechanical plant rooms located in the

basement and upper floor levels

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3. Primary M&E Services CoordinationQuestions:1. What is the definition of “coordination” in this context?2. What would be a typical M&E services coordinated sequence?

Answers:3. The term “coordination” refers to:-

• The impact of M&E services installations on each other (who goes first – what goes where - and how)

• The methods adopted to install them (trade contractor programme coordination meetings – 3D modelling)

• The impact of the M&E services on the construction programme (key dates - site logistical plan & access)

• The methods adopted to integrate them (integrated programme development and progress monitoring)

Implementing the above will achieve an accurate target programme and subsequent 4D model.

2. The sequence in which the M&E services need to be installed will generally be from the highest to the lowest (soffit downwards). This is likely to differ along the primary routes due to:-

• The locations of plant and switch rooms

• The locations of vertical risers

• The locations of incoming utility services

• Access requirements for maintenance or future installation

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Engineering Services Planning LimitedThe sketch below provides a sectional example of primary M&E services located in a corridor, indicating how they could be installed from the soffit down.

FA/VA, BMS & Security

containmentLV Cable Trays

Lighting & Power Trunking

Blockwork Walls

Slab

HV Ladder Rack

SoffitFire Protection

Pipe Work

Incoming Water Mains

Drainage Pipe

Duct Work

Duct Work Branch

Chilled Water Pipes

Typically in a corridor M&E trades each install their own supports from the soffit as the first programme item.

Followed by water mains, drainage and fire protection pipe work. Generally M&E services that would not require any further access once they had been installed, tested and insulated.

Followed by the ductwork and its branches to adjacent rooms, which would require testing and insulation.

Then the chilled water pipework, which also branches off to adjacent rooms and needs to be accessible.

Electrical containment is always the lowest and final service to be installed. Its completion and subsequent cable installation will be dependent on the mechanical services completion.

The coordinated installation sequence needs to prioritise the earliest release for HV & LV cable installations.

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Summary details:

• Identify the key M&E services

• Identify the primary M&E services routes

• Identify the key programme dates and interfaces

• Interface the project logistical plan and access requirements

• Determine the programme structure to accommodate the above items

• Divide the programme into coordinated areas to enable performance monitoring

• Establish a sequence of coordinated activities for the primary M&E service routes

• Achieve the shortest period of time to install the high level mechanical services prior to release for electrical services containment commencement. Typically this will be +/- 8 weeks.

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Where can you find further information:

The Engineering Services Planning website provides:

• M&E services template programmes for mechanical plant and electrical switch rooms• Examples of progress monitoring schedules• A Guide to M&E Building Services Planning Manual• Our Collaborative Planning Paper• hhghgh


Documents

Engineering Services Planning Limited Integrated M&E building services planning presentations Planning support for the construction industry in order to: