073 modern method of construction

MODERN METHOD MODERN METHOD OF CONSTRUCTIONOF CONSTRUCTIONPART 1PART 1

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MODERN METHOD OF MODERN METHOD OF CONSTRUCTIONCONSTRUCTION

Revisions to Building RegulationsRevisions to Building RegulationsBuilding Regulations in the past were only Building Regulations in the past were only

concerned only with the health and safety concerned only with the health and safety of people in and around buildings.of people in and around buildings.

More recently the Regulations have been More recently the Regulations have been broadened to cover the performance of broadened to cover the performance of buildings.buildings.

This includes thermal and acoustic This includes thermal and acoustic performance. performance.


House builders are concerned with House builders are concerned with meeting higher standards, but with meeting higher standards, but with the prospect that performance might the prospect that performance might be tested after construction.be tested after construction.

This can lead to costly remedial work This can lead to costly remedial work if performance falls short of the if performance falls short of the standard required. standard required.


Some house builders are looking Some house builders are looking at MMC as a potential way of at MMC as a potential way of providing more predictable providing more predictable performance in the completed performance in the completed dwelling.dwelling.

WHAT ARE MODERN METHODS OFWHAT ARE MODERN METHODS OFCONSTRUCTION?CONSTRUCTION?

Modern methods of construction is a Modern methods of construction is a collective term used to describe a number collective term used to describe a number of construction methods.of construction methods.

The methods being introduced into UK The methods being introduced into UK house building differ significantly from so-house building differ significantly from so-called conventional construction methods called conventional construction methods such as brick and block.such as brick and block.


Housing Corporation-classificationHousing Corporation-classificationsystem for dwellingssystem for dwellingsOff-site manufactured – VolumetricOff-site manufactured – VolumetricOff-site manufactured – PanellisedOff-site manufactured – PanellisedOff-site manufactured – HybridOff-site manufactured – HybridOff-site manufactured – Sub-assemblies Off-site manufactured – Sub-assemblies

and componentsand componentsNon off-site manufactured modern Non off-site manufactured modern

methods of constructionmethods of construction


Definition based on attributes such as Definition based on attributes such as efficiency and quality.efficiency and quality.

Most MMC being constructed at present is Most MMC being constructed at present is subject to Housing Corporation grants.subject to Housing Corporation grants.

The information in this PPT is therefore The information in this PPT is therefore based on that systembased on that system

Volumetric constructionVolumetric constructionThree-dimensional units produced in a Three-dimensional units produced in a

factory, fully fitted out before being factory, fully fitted out before being transported to site and stacked onto transported to site and stacked onto prepared foundations to form the dwellingsprepared foundations to form the dwellings


VOLUMETRIC / MODULAR VOLUMETRIC / MODULAR CONSTRUCTIONCONSTRUCTION

Volumetric construction (often referred to as Volumetric construction (often referred to as modular construction) involves the production modular construction) involves the production of three-dimensional units in controlled factory of three-dimensional units in controlled factory conditions, prior to transportation to site.conditions, prior to transportation to site.


Modules can be delivered to site in a variety Modules can be delivered to site in a variety of formsof forms

some may simply be a basic empty shell some may simply be a basic empty shell awaiting on-site finishingawaiting on-site finishing

others may have already been completely others may have already been completely fitted out with all the necessary fitted out with all the necessary internal/external finishes and services, and internal/external finishes and services, and be purely ready for on-site assembly.be purely ready for on-site assembly.


The maximum size of a volumetric unit is The maximum size of a volumetric unit is only really determined by the practicalities only really determined by the practicalities of transportation, road and site access.of transportation, road and site access.

The strength and rigidity of the modules is The strength and rigidity of the modules is a very important factor and must be a very important factor and must be sufficient enough to allow them to be sufficient enough to allow them to be securely transported and craned into place securely transported and craned into place on-site without being damaged.on-site without being damaged.


The majority of the volumetric construction The majority of the volumetric construction in the UK to date has been used in:in the UK to date has been used in:

HotelsHotelsstudent accommodationstudent accommodationhealth authoritieshealth authoritiesNHS Trusts and fast food sectors. NHS Trusts and fast food sectors.


Family-sized accommodation is becoming Family-sized accommodation is becoming increasingly popular.increasingly popular.

Terraced ‘town-house’ might typically be Terraced ‘town-house’ might typically be broken down in four basic modules, plus a broken down in four basic modules, plus a roof and even possibly a dormer window roof and even possibly a dormer window module.module.


Weatherby Building System (WBS’s) Weatherby Building System (WBS’s) range of systems are ideal for use with range of systems are ideal for use with volumetric modules and include traditional volumetric modules and include traditional polymer cement renders, thin-coat silicone polymer cement renders, thin-coat silicone & acrylic finishes and brick slip cladding, & acrylic finishes and brick slip cladding, which can all be applied either prior to site which can all be applied either prior to site delivery or after the modules have been delivery or after the modules have been finally positioned on-site.finally positioned on-site.


Some of the benefits of VolumetricSome of the benefits of VolumetricConstruction Construction More cost effective that traditional More cost effective that traditional

methods of constructionmethods of constructionRapid on-site assembly timeRapid on-site assembly time Improved qualityImproved qualityReduced defects & snaggingReduced defects & snagging


Less disruption on-siteLess disruption on-siteBetter predictability and controlBetter predictability and controlGood thermal, acoustic and wind resistant Good thermal, acoustic and wind resistant

propertiespropertiesFantastic choice of external finishes Fantastic choice of external finishes

availableavailable


ArquitectonicaTrinity PlaceSan Francisco, California


The buildings are conceived as a series of The buildings are conceived as a series of rectangular prisms that rest on each rectangular prisms that rest on each other. other.

Each building has a different volumetric Each building has a different volumetric composition that results in an individual composition that results in an individual expression within the common vocabulary expression within the common vocabulary of the block. of the block.


The arrangement of volumes is intended The arrangement of volumes is intended to form a multidimensional neighborhood to form a multidimensional neighborhood of buildings, with some structures of buildings, with some structures expectedly anchored firmly on the ground, expectedly anchored firmly on the ground, some less expectedly suspended above some less expectedly suspended above other volumes, some informally other volumes, some informally overlapping.overlapping.

A large vertical “gateway,” with a grand A large vertical “gateway,” with a grand staircase, leads up to the interior park-like staircase, leads up to the interior park-like courtycourty


Panellised construction systemsPanellised construction systemsFlat panel units built in a factory and Flat panel units built in a factory and

transported to site for assembly into a transported to site for assembly into a three-dimensional structure or to fit within three-dimensional structure or to fit within an existing structurean existing structure


Systems can include wall, floor and roof Systems can include wall, floor and roof panels to create the complete structural panels to create the complete structural shell.shell.

Factory-made structural floor and roof Factory-made structural floor and roof panels are known as ‘cassettes’.panels are known as ‘cassettes’.


There are many different types of panel, theThere are many different types of panel, theMain-types are:Main-types are:Open panels: panels delivered to site Open panels: panels delivered to site

where insulation, windows, services and where insulation, windows, services and linings are fitted.linings are fitted.

All structural components are visible. All structural components are visible.


Panels can be structural (transmitting load Panels can be structural (transmitting load to the foundations) or non-structural (used to the foundations) or non-structural (used as non-load bearing separating walls and as non-load bearing separating walls and partitions).partitions).


Closed panels: panels based on a Closed panels: panels based on a structural framing system (such as the structural framing system (such as the type used for open panel systems), which type used for open panel systems), which can have factory fitted windows, doors, can have factory fitted windows, doors, services, internal wall finishes and externalservices, internal wall finishes and external

cladding.cladding.The internal structural components can The internal structural components can

only be seen around the perimeter of the only be seen around the perimeter of the panel.panel.


Concrete panels: structural wall panels, Concrete panels: structural wall panels, which can include cladding (often bricks or which can include cladding (often bricks or brick slips), insulation materials, windows brick slips), insulation materials, windows and doors.and doors.

Composite panels: panels made from a Composite panels: panels made from a combination of different materials that act combination of different materials that act together to provide structural support.together to provide structural support.


Structural insulated panels are a specific Structural insulated panels are a specific form of composite panel.form of composite panel.

Structural insulated panels (SIPS): Structural insulated panels (SIPS): sandwich construction comprising two sandwich construction comprising two layers of sheet material bonded to a foam layers of sheet material bonded to a foam insulation core.insulation core.

They do not rely on internal studs for their They do not rely on internal studs for their structural performance. structural performance.


Used primarily as wall and roof panels.Used primarily as wall and roof panels. Infill panels: non-loadbearing panels Infill panels: non-loadbearing panels

inserted within a structural frame.inserted within a structural frame.Any type of panel can be used although Any type of panel can be used although

framed panels are more common.framed panels are more common.Masonry can also be used.Masonry can also be used. itit


Curtain walling: vertical building enclosure Curtain walling: vertical building enclosure system that supports no loads other than system that supports no loads other than its own weight and the environmental its own weight and the environmental loads that act uponloads that act upon


Volumetric units integrated with panellisedVolumetric units integrated with panellisedsystemssystemsHybrid construction is also referred to as Hybrid construction is also referred to as

semivolumetric construction.semivolumetric construction.Highly serviced areas such as kitchens or Highly serviced areas such as kitchens or

bathrooms can be constructed as bathrooms can be constructed as volumetric units, with the rest of the volumetric units, with the rest of the dwelling constructed with panels.dwelling constructed with panels.


What is SIP's, Structural Insulated Panels?


Steel SIP's are engineered panels made Steel SIP's are engineered panels made from a dense core of EPS (expanded from a dense core of EPS (expanded polystyrene) sandwiched between two polystyrene) sandwiched between two exterior layers of galvanized steel, resulting exterior layers of galvanized steel, resulting in a solid one-piece that provides structural in a solid one-piece that provides structural framing, insulation, and exterior sheathing.framing, insulation, and exterior sheathing.

The 200mm wide interlocking panels are The 200mm wide interlocking panels are strongstrong

First few courses; note the First few courses; note the sandy soilsandy soil

Closer View of first few coursesCloser View of first few courses

First storeyFirst storey

Different wall thicknesses Different wall thicknesses shownshown

External ViewExternal View

073 modern method of construction

Engineering