control in construction management - bme | … activities in... · · 2014-04-30wall and floor...

2014.04.28.

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CONTROL IN

CONSTRUCTION

MANAGEMENT

BUTE – Faculty of ArchitectureDepartment of construction technology and management

István Vidovszky PhD

CM4Controlling of construction technology2014.04.28

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Vidovszky – BUTE – Department of Construction Technology and Management

• Introduction

• Overall control

• Time monitoring

• Resource control

• Cost and financial monitoring

• Quality control

• Work operation control

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CONTROLLED ACTIVITIES

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Cost control

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Work operation control

Quality control

Resource control

Time control

Financial control


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SCHEDULE CONTROL

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scheduleing daily controlling of the scehule

delays / early finshes

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TIME CONTROL

possible consequences – management tasks

schedule change

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duartion of the construction activity

norm

work capacity

material

grade

applied technology

technical circumstances

TIME INFLUENCING FACTORS

possible work hours / day

possible work days / week

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POSSIBLE ACTIONS IN CASE OF DELAY

• increasing work capacity

• increasing working hours /day or week

• changing technology / material

• (?reducing grade?)

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TIME-COST RELATIONS

calculation method

� specific performance indicators of the construction works –

(currancy unit / time unit / working unit)

e.g. 15 € / hour / worker

� specific cost or cost proportions of the work activities / groups of

activities (%)

e.g. cost of loadbearing walls = 4-5% of the total construction cost

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TIME-COST RELATIONS

Examples – specific performance indicators

groups of activities specific indicator

bricklayer work 180-210 € /day/ worker

motorized work 400-480 € /day/ worker

wall and floor tiling 220-280 € /day/ worker

metal sheet worker 300-360 € /day/ worker

Painter works 280-320 € /day/ worker

building installation 360-440 € /day/ worker

assembly works 400-480 € /day/ worker

other 200-240 € /day/ worker

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TIME-COST RELATIONS

Examples – specific cost proportions of the work activities

groups of activities approx. % of total construcion cost

earthwork 3-5%

foundation 8-10%

loadbearing walls 10-14%

partition walls 10-12%

slabs 12-15%

roof structure and surface 14-16%

built-in furniture 5-8%

building installation 18-21%

extranal establishments 6-10%

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TIME-COST RELATIONS

calculation methodo

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t specific cost of

the construction

activity

specific

performance

indicators of the

construction

works

/

1200€ 15€/h/worker/ 80 working hours

maximum total

working hour

without cost

overrun

20 worker - 4 hours

(half a day)

1 worker - 80 hours

(2 weeks)

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CONSEQUENCES OF TREATING DELAYS

• extra cost of changing technology

• extra cost of increasing capacity

• cost of the extra human resource

(extra working hours or workers)

• cost of the extra eqiupment

calculation required

cost monitoring – resource monitoring

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COST CONTROL IN GENERAL

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COST CONTROL

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FINANCIAL PLANNING

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FINANCIAL CONTROL

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FINANCIAL CONTROL

actual budget

income

time

costs

actulized cash-flow plan

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Aim:

QUALITY ASSURANCE DURING THE CONSTRUCTION

to ensure to safisfy the of the project, for witch it was undertken

standards and regulationsquality statment

product description (specification)

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Quality and Grade

low grade – selection of less durable, less noble surfaces, materils

QUALITY ASSURANCE DURING THE CONSTRUCTION

low quality – oparation faileurs, functional problems

high grade - low quality

low grade – high quality ☺☺☺☺

��

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QUALITY ASSURANCE

architectural supervision

quality surveyor

daily controlling routine

client

designers

contractor

authority

state

participant contolling process contolling aspect

every aspect

aesthetical quality/ accordance with the plan

every aspect

before construction,after hand over accordance with the plan

INN

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every legal aspectduring the construction


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QUALITY ASSURANCE AND CONTROL

Who does it? Who is responsible?

• forman

• general forman

• site manager

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executed workapplied standard

inspection of the executed work

QUALITY ASSURANCE AND CONTROL

work-operation control +

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WAYS OF QUALITY CONTROL

Tools for inspection:

• performance control

• sampling (statistical sampling)

• non-destructive testing (e.g. Ultra

sonic or X-ray tests)

• trend analyses

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PERFORMANCE CONTROL

e.g. - masonry wall

• measurents• plumb / level• alignement• right angles

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PERFORMANCE CONTROL

e.g. – tiled surface

• plumb / level• aligment• joints

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PERFORMANCE CONTROL

e.g. – carpentry structure / joinery work

• measurents• joints• alignements

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Engineering activity for the assembly

• in case of complicated spacial structures

• 3D computer model

• laser beam control for the assembly

OPERATION CONTROL

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SOURCES

Neszmélyi L. (szerk.): Építési műszaki ellenőri szakképzés. Szabványügyi ismeretek. Minőségügyi és minőségirányítási ismeretek. Terc, 2011.

Neszmélyi L. (szerk.): Építési műszaki ellenőri szakképzés. Jogi ismeretek. Munkavédelem. Tűzvédelem. Terc, 2011.

Klujber R. : Építési Munkák Időtervezése becslési eljárással. 2014 (presentation)A Guide to the Project Magement Body of Knowledge (PMBOK Guide), PMI, Four Campus Bulward, Newton Squre, Pennsilvania, 1996.Construction Extention to a Guide to the Project Magement Body of Knowledge (PMBOK Guide), PMI, Newton Squre, Pennsilvania, 2000.http://www.prospects.ac.uk/building_surveyor_job_description.htm 2013-04-13 http://www.prospects.ac.uk/quantity_surveyor_job_description.htm 2013-04-13 http://aibs.businesscatalyst.com/fabs/about_building_surveyors 2013-04-13 http://en.wikipedia.org/wiki/Quantity_surveyor 2013-04-13

Pictures:http://moreintelligentlife.com/content/arts/boutique-engineering 2014-04-23


control in construction management - bme | … activities in... · · 2014-04-30wall and floor...

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