project_management_year_1_20230227145010 Flashcards
Prof Duccio Turin definition of Construction
Need to consider its :Output - What type of buildingProcess - The people involvedCharacteristic
Brief 3
Determines requirements ClientsUsers
Land 3
LawyersChartered SurveyorsLand Use
Design 3
Consultants - Arch, Eng, QSStatutory Consent - Local AuthorityStandards - Proff Institutions
Procurement 3
Purchasing goods/servicesContractual Arrangements Tendering Process
Construction 3
Components, Plant, Labour, CapitalSub/contractorsStandards/Building control/Safety
Occupation 4
EquipmentFixtures/FittingsITFurniture
Maintenance 1
Facility Management
Building Cycle
Where the circle leads back to Land| Brief, Design, Land, Procurement, Construction, Occupation, Maintenance
Characteristics of Construction
Buildings Expensive Building process is large and complexFragmented Industry
How did the BuiEnv develop
Urbanisation, Building type, Standards/control, Management
Early Civilisation (3)
Relied on natural resources: Reeds, Trees, LeavesNeeded for Shelter and portableSkills within the family
Roman Impact (3)
753 BC to 27 BC and 64 AD to 1453 ADSophisticated structures/infrastructure/townsBuild Mats, stone, concrete, bricks, tiles, decorationBuilt largely by the Military
Dark Ages
Rural Farming focus around monasteries| Black Death 4m to 2.4m lack of tradesmen cost increase
17th, 18th, 19th Century
Wool Industry, Industrial buildings, Towns, large estatesIncreased Building Demand/complexityFormation of Bodies
Industrial Revolution
Wool/steam engine - Factories, mining, transportUrban housing for rural-urban migration workersPublic sector buildings, gov/edu/healthDisease/hygiene problems led to gov planning/control
Number of listed buildings
500,000 England and Wales
Evolution of Management of Projects
Created split design/construction, fragmented design/main contractor has responsibility of delivery. Discontented results created the project manager
Medieval Period (4)
600-150012 trade guilds where tradesmen followed workDesign followed trade practicesLarge Projects led by master tradesman or mason
Gothic Style (2)
Pointed Arch, Rib Vaulting (ceiling), Flying Butress| Enabled Slender, Higher, Complex structures
Renaissance Period (4)
1500-1600Grand Tour, introduced to other European designsBuildings influenced by craftsIntroduction of architect and contracting unit
Classical Period (4)
1600-1800Architect established, designed and contracted to buildEmergence of ContractorsChristopher Wren and Inigo Jones
Victorian Period
1800-1900Introduced Engineer Institutionalisation of constructionSeperation fo design and build
20th Century (5)
Commercialisation of clients and buisnessUnique buildings not necessarily follow styleFunctionalism of designDemand for complex buildings Increased Fragmentation
3 Factors evolving planning
IndustrialisationUrbanisation and population growthOvercrowding and Disease
Town Planning
-Diff Disciplines: Public Health, Building control, Housing Management, Town/Country Planning Asso 1899 Sir Ebenezer HowardLetchworth/Welwyn
Drivers of Construction Demand (Macro) (3)
Economic GrowthPolitical/Economic PolicyPopulation Growth
Drivers of Construction Demand (Micro)
Business activity/investmentResponse to society demandsMaintaining the building/building stock
Client
An individual or organisation that commissions the construction of a building
Factors effecting the Con. Industry
Nature of the demandDiversity of types of project Low barriers to entry/exit for firmsManner of industry evolution
Manner of industry evolution
Seperation of design and construction and manner of work carried out.
Broad Definition of Construction
Manufacturers of building products, (equipment/ components), various professional services by architects, surveyors, engineers and property managers’
Narrow Definition of Construction
Estimating the activity of firms that construct and maintain buildings and infrastructure – that is, just those businesses that undertake on-site activities
Overview - Nature of Con. Industry (8)
Highly fragmented, involving many organisations/ parties,highly complex, high uncertainly, high levels of risk, proceeds in sequential stages, expensive,dangerous
Characteristics of Projects (6)
Uniqueness - Location and issiesClearly defined objectives - Time cost QualityFixed timescaleTeam of people - TeamworkNo practice or rehearsal Change
Impact of Large Projects
Creates employmentImpact environmentCen/Loc Gov - Envi, Planning, Quality/workman standards
Product Life Cycle (PLC) (9)
Inception, Feasibility, Strategy, Pre Construction, Construction, Commissioning, Occupation, In-use, start
Consideration for each PLC Stage
ScopeParticipants and their rolesKey activities and output
Scope Management
Defining what work is required and then making sure all of that work – and only that work – is done.
Input to Construction Process (7) Management
Need, Land, Labour, Materials, Plant, Information, Captial
Output of Construction Process (5) Management
Finished Building, Investment, Employment, Profit, Carbon Emissions
Fragmentation
Lots of parties involved although mostly for short periods of time in the process
Health and Safety
1 of the highest fall/fatality per 1000| Workers 2x likely, disabling injury than other industries
Health and Safety Statistics
5% of total employment31% of total fatalities 10% of major/substantial injuriesLast 25 years 3,000 people have died
Overview - Management of Con. Industry
Over last 100 years the design & construction split and lack of manager has caused conflict and an adversarial culture. Introduction of PM a response to this problem.
Widening Procurement Options
Package Deal/TurnkeyManagement Contracting Design and build/design and developConstruction ManagementContractor Fee not fixed Price, able influence design
CIOB PM Defintion Abbreviated
Overall planning, control and co-ordination of a project from inception to completion aimed at meeting a client’s requirements, ensuring completion on time, within cost and to required quality standards
Basic PM Functions (4)
Scope ManagementTime Management Quality ManagementCost Management
Integrative PM Functions (4)
Risk ManagementHR ManagementCommunications ManagementContract/Procurement Management
What is PM About (4)
Achieving ObjectivesManaging GroupsKnowledge of Technical ProcessAnalysis and Control
Qualities/Skills PM Need (4)
Develop/maintain team spiritOrganise and LeadRight qualities of temperamentMaturity of judgement
Project Management Techniques (5)
Project ScopePlanning and schedulingFinancial ManagementStakeholder ManagementRisk Management
3 Measures of Project Success
Project Functionality - Performance of final productPM Effectiveness - Delivery in accordance to objectives Participants Commercial Performance - Whether PT gained financially from their contribution.
Categories of Land Owners
Traditional - Church crown aristocracyIndustrial - firmFinancial - institutionDevelopers - for profitHouseholders - home ownersConservation Charity - national parks
Value of Property Effected by (8)
Size/QualityLocationAgeLocal DemandAvailability of similar PropertyLocal TransportLocal amenities Value of similar properties
Development Appraisal
Compares Total Revenue with Total Cost of schemeHow much land/construction costCost of borrowingProject rental income/investment yield
Development Appraisal Variables (7)
Land PriceBuilding CostProject CostRental IncomeInterest Yields Investment Yields Time - Length uncertainty
Optimum Property Investor Position
A prime propertyGood quality productLong pre-let w/ blue-chip (does well in downturn) tenantA fully repairing & insuring lease arrangementRegular upward rent reviews
Current Major Issues in Con.
30% of projects still exceed their cost budget by 20% and 75% miss target completion by 10-15%.Significant moves to change industry, w/ more single source arrangements + collaborative working.
Emerson Report (criticism of industry)
Emerson Report (1962) concerned with relationships in the building process – lack of liaison, separation of education of professionals,
Banwell Reports (criticism of industry)
Banwell Reports (1964 & 1967) concerned with project organisation
Higgins & Jessop Report (criticism of industry)
Higgins & Jessop Report (1965) identified the need to co-ordinate design & construction First to suggest the overall co-ordination role
Drivers for Change in Con.
Quality driven agendaCommitment to peopleCommitted leadershipFocus on customerProduct team integration
Improving the project process
Product development Product implementationProduction of componentsPartnering the supply chain
Tagets for improvement
Capital Cost - -10%Construction Time - -10%Defects - -20%Accidents - -20%Productivity - +10%Turnover/Profit - +10%
Egan Report
199830% of construction is reworked,Labour is only 40-60% efficient,10% of materials are wasted,Accidents can account for 3-6% of total project costs
Change to Collaborative Culture
Integrated teamsNo blame cultureSharing ‘pain & gain’PartneringFrameworks.
Project Management changes
Introduction of client-facing manager of overall process| Use of a PMgr now mandatory on public sector projects
Construction 2025
UK should be in 2025- 33% in both initial cost and the whole life cost- 50% inception-completion time new build/refurb asset- 50% in greenhouse gas emissions inbuilt environment- 50% trade gap all exports/imports for product/materials
Drivers of Con 2025 delivery
Improved image of the industryIncreased capability in the workforceA clear view of future work opportunitiesImprovement in client capability & procurementA strong & resilient supply chainEffective research & innovation
Types of Castles
Shell Keep - Round/Curtain WallHall Keep - Large multi storeyHigh Curtain wall - Defence structure
Evolution of PM
Master tradesman PM More commercialisation, control cost client QSArchitect taking over design1800 split of architect and contractorDesign and construction kept drifting apartFormation of professional bodies
Tudor
1485-1560Non religious show off wealthSteep RoofFireplacesSmall Windows
Elizabethan / Jacobean
1560-1620Large mansions for aristocracy Grand TourJetting / Dutch GablesMore sophistication of housing
Planning Policy
Process of policy making, control and implementation.Public health - Indust rev hygeine/diseaseHouse Man - C’cil Housing, prevent mass cheap housingBuilding COntrol - Important over time
Inception
Initial Stage Statement of objectivesEnvironmental MandateApproval of feasibility Appointment of PM
Feasibility
Establishing/reviewing options to achieve objectivesUnderstand client demands/appraising optionsFinancial viabilityClient decision to proceed to strategy
Strategy
PM takes clients preferred optionsAssembling the teamEstablish infrastructure for managing/controlling projectFacility Management/Procurement strategy
Pre - Construction
Implement plans of strategy stageExecution of design process, obtaining legal consentClient approval with construction works
Construction
Facilities construction defined by design| Process involves greatest n.o of people/orgs/expenditure
Commissioning
Confirms building services systems are installedCommission strategy/schedule Training of client staff
Completion
Formal transfer of completed facilities Single or phased over timeEnsure client has knowledge/capability to operateFinal inspections
Evo Man Project : Middle Ages
ClientMaster Mason organises trade guildsMeasurer equate work to pay
Evo Man Project : 16th
Introduction of Architect| Functional specialists
Evo Man Project : 18th
Introduction of Engineers, QS, Main contractorSubcontractorsQS - 2 Measurer Client+Contractor
Evo Man Project : 20th
Introduction of PM, design teams
Estimate Value of Property
Similar propertyComparative contractors - cost of constructionResidual method - future estimateInvestment - opportunity cost
High Net to Growth Ratio
Maximising floorspace to let out| Minimise circulation space
Latham Report
Need for better teamwork and co-operation
Hardwoods 6
Long-lastingAngiosperms (seed vessel)Longer to grow Most hardwood species are tropical Need to be managed sustainablyDeciduous trees
Softwood 4
Gymnosperm (naked see)60-120 years relatively shorter growth1/3 of worlds wood / 80% of UK From Conifers
How many types of Timber
30,000
Wood Properties 3
Low thermal conductivity - good heat storageHigh strength - 2/3 of all houses timber frameLow weight
Anisotropic
Different properties when measured in different ways| Wood stronger across the grain
Wood Conversion
Cut logs into sections| Finished by planing or sanding
Tree Workings
Trunk gives structural strengthBark prevents mechanical damage Radical rays move food into sapwood for storage
Potential Wood Damage
Fungi - Metabolising organic material (Wet/dry rot)InsectsFire Damage
Fire Retardants
Reduce flaming of surfaceSlows it downImpregnation with leach-resistant chemicalsSurface coatings.
Preserving Timber
Fungicides/Insecticides| Impregnation modification - Chemicals to fill gaps
Properties of Steel (6)
High Strength Good Ductility High StiffnessSuitable for prefabricationHighly recyclableWorked by sawing, drilling, flame cutting, welding bolting
Steel
Alloy of Iron and Carbon0.4% carbon 2x strength1% carbon 3x strengthMore carbon incr tensile (hard) not strength more brittle.
Iron
Element Heated to 900AllotropicHematite/MagnetiteExtracted with coal and limestone
Cast Iron
Remelting Pig Iron w/ steel and cast iron scrap| Finished product has a high carbon content
Pig Iron
Used to make Cast and Wrought Iron| 4-5% Carbon
Wrought Iron
Pig Iron heated with Iron oxide in a furnace| Carbon/impurities react with oxygen to form slag
Cast Iron Properties
3-4% CarbonBetter than Wrought Corrosion resistant BrittleSuitable for castingNot suitable for Hot working
Wrought Iron Properties
Low 0.15% High 0.5-1.5%Good Resistance die to oxide layerReasonable tensile strength, Malleable and toughCan be forged, complex workCannot be cast, tempered or welded
Uses of Steel
Hot or cold rolled sectionsOff site quality controlRapid assembly
Iron/Steel Corrosion
Destructive attacks by external elementsWater vapour (rust)/electrolysis/oxygenAbrasion of protective coatings expose metalTemperature change expan/cont may fracture coatingsHumidity > 70% will initiate rusting but occurs > 50%Pollutants help hold moisture on the surface of the metal
Protective Coating
Painting - rust and mill scale must first be removedVitreous enamel - molten enamel form corro-resis coating Plastic coatings - coating PVC, acrylicSteel needs a zinc pretreatmentZinc is used to galvanise steel
Zinc Coating
Spraying or dipping in molten zincBarrier to the environmentBetter surface for welding/paintingDurability depends on thickness
Steel Reinforcement in Concrete
Take the tensile stresses away from concreteCarry proportion of the compressive stressesControl fire
Fire Protection Steel
Steel incombustible, strength reduced by high tempsLoad bearing strength reducesStructural integrity lost at 550Intumescent paint, expand 25-30 times, 2 hour protection
Concrete composition
Cement, Sand, Aggregate
Slump Test
Determines workability on site| Indication of correct consistency
Concrete Accelerators
Increases reaction between water and cement, set faster| Calcium Chloride
Concrete Retarders
Decreases rate of settingReduces 28 day strengthPhosphates/hydroxycarboxylic acids
Water-resisting admixtures
Hydrophobic| Stearates or Oleates
Air-entraining Admixtures
Improve workabilityReduce risk of segregationIncrease frost resistance Decrease compressive strength
Foaming Concrete
Low density
Concrete Failure
Chemical attack Frost - Freeze ThawAbrasionFireMovement – heat & moisture, creepCracking/spalling from corrosion of steel reinforcement
Concrete Chemical Attack
Leaching Sulphate AttackAlkali-Silica ReactionCarbonation
External Sulphate Attack
Water containing penetrates concreteSeawater - Sea defencesAcid RainExtensive crackingExpansionLoss of bond between cement paste and aggregateLoss of strength
Internal Sulphate Attack
Sulphate included in concrete when mixedSulphate rich aggregatesScreening and testing should prevent this
DEF
Delayed formation of the mineral ettringiteHigh early temps prevents normal formation of ettringite.Expansion and cracking
ASR
Alkali-Silica ReactionReact high alkaline cement + reactive silica in aggregateGel produces takes on water and leads to crackingOver time
HAC
High Alumina Cement Calcium aluminates rather than silicatesRapid strength developmentHowever mineralogical conversion reduced strengthIncreased vulnerability to chemical attack.
Steel Carbonation
Increases susceptibility to chloride attacks
Concrete Creep/Shrinkage
Long term deformation under sustained loads| Shrinkage depends on aggregate size
Concrete Repair
Epoxy resin
How Glass is made
High melting/viscosity reduced by adding sodium oxideReduces it from 1700Reduces energy and cost of manufacture
Float Glass
Thinner 6mm or 0.4mm/25mmMolten glass poured on molten tin Floats on tin, evenly spreadThickness controlled by pour speedAnnealing (control cooling) exit as 'fire' polished productVirtually parallel surfacesCan be tinted
How Float Glass is made
Raw Material FeedMelting FurnaceFloat BathCooling LehrContinuous ribbon of glassCross CuttersLarge plate lift-of devicesSmall plate lift-of devices
5 Main Glass Groups
Soda-Lime Glass - Bulbs/ContainersQuartz Glass - High meltingBorosilicate glass - Chem resistantLead glass - Low Melting radiation shieldingAlumino-silicate glass - Glass fibre
Glass Properties
Light transmission • Refractive indexThermal properties StrengthHardness - abrasion resistanceDurability - weatheringFire resistance
Gas Filled Glass
Argon gas| Lasts 15-20 years
Recycled Glass
Landfill tax doubled in 2009Fibreglass insulationRemeltingFine Aggregate
4 Material Considerations
SuitabilityDurabilityReliabilitySustainability
Triple Bottom Line
SocialEconomicEnvironmental
Construction Stat
50% of all materials globally used in construction| UK 200m tons of waste in 2012
Building Cycle
Extract Raw MaterialsPrimary/Secondary ManufactureConstructionBuilding UseEnd of lifeDemolish
Waste Hierarchy
LandfillRecover energyRecycle/CompostRe-useReduce
4 R’s + D
ReduceRe-useRecycleRecovery - (energy)Disposal
OSP
Off Site ConstrucitonManufacture away from place of installationStandardisation/Pre-AssemblyOccur all year round increase productivityRapid on site construction/improve time predictabilityQuality control
Non-Volumetric Construction
Assembled within a factory| Don’t enclose usable space, flat/two- dimensional
Volumetric Construction
Pre-assembled Pods (Kitchen/bathroom)| 3 Dimensional space
Closed/Open Systems
Closed - Combine w/ components from same manufacturOpen - More Flexibility, can combine with othersNeed to be standard Sizes
Why Prefabrication
Quickly made water tight, early installation of servicesSome modular systems have services incorporatedFactory better quality control and in theory zero defects
Factory Fabrication
Quickly address skill shortagesGreater build cost accuracy Reduce on-site time/injuryWaste minimisedLess damage to components/no on site storageEnable integration of BIM with more ease
Prefabrication Problems
Factory specific on-site foundations specific
Walter Segal Method| Huf Haus
Timber primary design and modularStandardised - no waste, cut/alter material, reduce costReduce wet trades, concrete plastering and bricklaying5 trained men in 6 days
EIA’s| BREEAM
Environmental Impact AssessmentMet environmental standardsSocial/economic impact considered
Portland Cement
1824 - Joseph AspdinHeated mixture of clay & chalk gave hydraulic cementMix burnt limestone + clay more calcined until CO2 goneMaterial ground into fine cement powder
Portland Cement Properties
Excellent strengthStronger than Roman cement5x stronger than hydraulic lime
Portland Cement Development
Rotary KilnsAddition of gypsum control settingUse of ball mills to grind clinker and raw materials
Hydraulic Lime| Non Hydraulic Lime
Limestone with reactive clay, hydration similar properties Portland cementHigher Clay stronger and less permeable 18-25%No clay non hydraulic
5 Types of Cement
Portland Cement Portland-composite CementBlast furnace CementPozzolanic CementComposite Cement
Sustainability in Concrete
Reduce amountLow embodied C - Heat eff, diff fuels, Clinker substitution Use of recycled materialsCarbon capture and storage
ThermosettingThermoplasticsElastomers
Synthetic polymers can be:Thermosetting - harden on heat and do not re-meltThermoplastics - soften and melt on heatingElastomers - Rubber retain original shape
4 Mineral Constitutions of Cement
Alite BeliteAluminate Ferrite
Cement Clinker
Clinker a nodular materialsLarge rotating drum containing steel ballsGypsum ground in to control setting properties
Clinker Process
- Clinker cools, liquid crystal = aluminate, ferrite low belite- Fast cool good - lots hydraulic react silicates + small, intergrown, aluminate and ferrite crystals.- Slow cool less hydraulic react silicates + coarse crystals of aluminate and ferrite - over-large aluminate crystals can lead to errattic seeng of cement.- Very slow cool, alite decomposes to belite + free lime.
Thermoplastic Example
PTFE| ETFE
Thermosetting Example
Phenolic ResinsAmino AcidsPolyester Resins
Epoxy Resin
ThermosetAdhesiveGood electrical insulator Hard / brittle unless reinforcedResists chemicals well
Polyester Resin
ThermosetStiff / hard / brittle unless laminatedGood electrical insulator Resists chemicals well Casting and encapsulation Bonding of other materials
PTFE
ThermoplasticResistant to chemical attackLight in weightNot brittleInexpensiveAdaptableCause minimal tissue reaction
ETFE
ThermoplasticHigh corrosion resistanceStrength over a wide temperature rangeHigh melting temperature, Excellent chemical / electrical / high-energy radiation resis
Elastomeric
Undergo large deformations / high elasticityLarge chain molecules twisted/coiled random mannerRubber
Additives
Added to improve desired propertiesPlasticisers - increase flexibilityFillers - Reduce cost, improve fire resistance, chalk/sandPigments - Dyes/pigments added Stabilisers - Reduce degradation by absorbing UV lightFlame retardantsHeat Stabilisers - work same under increased heat
Admixture
Modify setting/hardening properties of cementAcceleratorsAir-entraining - lightweight blocksRetardingWater reducing - plasticisers
Clay and Clinker
From clay reactants in the kiln of Lime, Silica, Alumina and iron produce the four mineral
Glass additions
Soda - reduce melting temp of silicaFlurospa and soldium sulphate - reduce bubblesCalcium/magnesium - stronger glass
Paint component
Pigment - colourBinder - bind to surfaceSolvent - control properties of paint for applicationExtender - go further
Plastic Sustainability
Un recyclable plastics| Reduce different types, easier to recycle
Unfired Brick
Air driedReduces shrinkage Improves strengthLow embodied energyEasier to recycleNo moisture resistance more sustainable
Stone
Igneous - GraniteMetamorphic - Marble (limestone)/slate (clay)Sedimentary - Limestone/clay
Brick Creating
Press, wire cut, mouldedDriedKiln3 different temperatures100 water, 400 burning carbon matter, 900 sintering
Power Culture (Handy)
Peoples activities are strongly influenced by a dominant figurePower is held by the few and from the centre
Role Culture (Handy)
Influenced by clear and detailed job descriptions in a well defined structurePower derives from a person position
Task Culture (Handy)
Teams are used to solve the problemPower derives from expertise Matrix so no single source of power
Person Culture (Handy)
Activities are influenced by the wishes of the individuals who are part of the organisation
Integration (Martin) Perspective
Culture values should be shared across the organisation, a unified culture
Differentiation (Martin) Perspective
Conflicting demands from individuals| Cultural pluralism
Fragmentation (Martin) Perspective
Constant changing of events, organisation as complex and unpredictable
Cultural Pluralism
When smaller groups within a larger society maintain their unique cultural identities
HRM
Strategies for managing people in order to achieve business objectives.
Soft HRM
An approach to HRM based on treating employees as the most important resource in a business.
Porters 5 Forces
Intensity of RivalryBargaining Suppliers/Sellers Threat of substitutes/new entrants
Hard HRM
An approach to HRM based on treating employees as a resource that needs to be managed.
Project Culture
A set of beliefs, attitudes and behaviours that exist independently of the individuals in the project.
Culture (GR Mills)
Abstract, long-term and socially determinedOften associated with psychological traits and beliefsNot emergent, dynamic and incentive-driven interactions
Group Decision Making Positive (4)
- Complete information/knowledge- Increased diversity of views and higher creativity- Wider acceptance/adoption of a solution- Group decisions accurate than decisions of individuals,
Group Decision Making Negative (5)
- Time consuming because solutions take longer- Individuals are quicker- Conformity pressures in groups- Group discussions may dominated by one/few members- Ambiguous responsibility
Barriers to Team Motivation (6)
Unclear objectives/directionInsufficient resourcesPower struggles/conflicts not confronted/resolved Poor job securityShifting goals/priorities (wrong prioritisation)Barriers tackled directly by dealing with cause or indirectly
Belbins 9 Team Roles Idea
Groups need the right mix / balance of people (skills and behaviour) to be effective.May build productive working relationshipsPeople, action and problem solving oritentated
Intrinsic Motivation
Performing well in order to gain an internal reward, coming from INside the individual
Extrinsic Motivation
Performing well in order to earn a reward
Hygiene Factors (5)
Factors causing job satisfactionSalary and benefitsWorking conditionsCompany policyJob securitySupervision and autonomy
Theory X
Managers take a pessimistic assume they’re unmotivated and dislike work. Team members need to be prompted, rewarded or punished constantly to complete their tasks.