Download
1 / 18
200 likes | 392 Views
Construction & Civil Engineering: Operational Aspects. ICP-Africa Regional Workshop Pretoria, South Africa 20 - 24 June 2011. Outline. Resource Inputs and Basic Headings. 1. Data Requirements. 2. Overall Methodology. 3. A 7-sheet Survey Questionnaire. 4. Overall Validation Process. 5.
E N D
Construction & Civil Engineering: Operational Aspects • ICP-Africa Regional Workshop • Pretoria, South Africa • 20 - 24 June 2011
Outline Resource Inputs and Basic Headings 1 Data Requirements 2 Overall Methodology 3 A 7-sheet Survey Questionnaire 4 Overall Validation Process 5 Timetable 6
Classification of the Construction Sector 3 Basic Headings 50 Input Resources 3 Categories of Input Resources Construction and Civil Engineering Machinery Machinery Machinery 38 38 38 Materials & Products Materials & Products Materials & Products Residential Building Equipment Equipment Equipment Equipment items Equipment items Equipment items 5 5 5 Labor Labor Labor Labour services Labour services Labour services 7 7 7 Non-Residential Building Civil Engineering
Data Requirements Residential Non Residential Civil Engineer. Expenditure Value • Expenditure Value • Expenditure Value Materials Resource Mix [%] Resource Mix [%] Resource Mix [%] To be obtained from National Accounts as part of the process of splitting GDP into basic headings 1 Importance Importance Price Price Importance Importance Price Price Importance Importance Price Price … Importance Price Importance Price Importance Price 38 Equipment Resource Mix [%] Resource Mix [%] Resource Mix [%] Resource Mix [%] Resource Mix [%] Resource Mix [%] Hire Rate Hire Rate Labor Rate Labor Rate Hire Rate Labor Rate 1 … … … … … … … Labor Rate Labor Rate Hire Rate Hire Rate Labor Rate Hire Rate 5 Labour 1 … 7 Contractor’s mark-ups … … … … … … Professional Fees
Overall Methodology 1 Basic Heading (BH) breakdown into 3 sub-headings: Materials, Labor, Equipment 2 Calculate unweighted PPPs for the 3 sub-headings by group of countries 3 Aggregate the PPPs for the 3 subheadings using the Resource Mixes to obtain weighted PPPs for the 3 BHs 4 Adjust the 3 BH PPPs for mark ups, professional fees and end-user taxes 5 Combine the adjusted BH PPPs using expenditures on the BHs as weights to obtain overall PPPs for construction
A 7-Sheet Survey Questionnaire Identification Form Introduction 1 Explanatory Notes 2 5 Technical Survey Forms Material 3 Equipment 4 Labour 5 Project Prices (Optional – used as checks on input based PPPs) 6 Supporting Information 7
1. Introduction • 1 • Country • 2 • Currency • Survey respondent • 3 • Name • Other • Govern.t • Consultant • academic • research • 4 • Employer • 5 • Type of Employer • 6 • Contact details • 7 • Telephone • 8 • Email • Mid year prices • Prices averaged over the year • Purpose of the survey collect mid year national average prices • Base date for prices • 9 • Please tick box • National average price level • 10 • Geographical base • 11 • National average factor
2. Notes – Item Descriptions Materials and services Locally available General notes Identify and collect their prices Identical or equivalent to prescribed items Commonly used Item descriptions and units If product specs. Not identical but equivalent Column 10 Proprietary products Report in Not metric dimensions For materials Report in Column 5 If alternative units of measure For labour Report in Column 4 Other notes Report in Column 10 Report Situation Number of hours For equipment hire, if per day or week In Column 5 In Column 8 If unit not per hour In Column 4 Column 5 For labour, if different unit
2. Notes - Prices Types of prices Materials Equipment hire Labour Actual purchasers’ prices Rental charges Actual employment cost Prices can be influenced Geographical location Local resource and distribution costs, geographic, seismic or climatic conditions, local market conditions, etc. Site context Respondents should assume reasonable site contexts with good access. Size of projects The larger the projects, the larger the quantities, and hence lower unit costs.
3. Material – Layout of the questionnaire 9 1 2 3 4 5 6 7 8 10 Ref Item Specifications Notes Pref. Unit Alternative. Unit Unit Price Residential Non Residential Civil Engineering Notes and Comments 01 Aggregate for concrete Clean, hard, strong m3 1 1 1 02 1 1 03 1 1 1 36 1 37 1 38 Electrivity Typical average commercial.. KWhr 1 1 Enter “1” or “*” if important Comments
4. Equipment – Layout of the questionnaire 1 2 3 4 5 6 7 8 Ref Item Specifications Notes Pref. Unit Alternative. Unit Unit Price with operator Unit Price without operator Notes and comments 01 Wheeled loader and excavator 1.0m3 loader capacity hour 02 03 04 05 Compact track loader Rated capacity: 864 kg hour Comments
5. Labour – Layout of the questionnaire 1 2 3 4 5 6 7 Ref Item Pref. Unit Alternative. Unit Number of hours Unit Price Notes and comments 01 General (unskilled) labourers hour 02 03 04 05 Structural steel worker hour 06 Electrician hour 07 Machine (equipment) operator hour Comments
6. Project Prices – Layout of the questionnaire 6 1 2 3 4 5 Ref Item Pref. Unit Alternative. Unit Unit rate Notes and comments 01 Single storey average quality detached house masonry (brick or block) or timber frame m 2 floor area m 2 floor area 02 Two storey attached house, mass market, centre unit in terrace/ row of four units, otherwise as above m 2 floor area m 2 floor area 03 04 10 Length of concrete sewer pipes, 0.5m diameter, average 2 m depth m length m length 11 Length of concrete sewer pipes, 1m diameter, average 3 m depth m length m length The collection of project prices is optional as those prices are not essential for the calculation of PPPs. They can however be used as an additional resource in the validation process.
7. Supporting Information – Layout of the questionnaire The mix of construction resources Residential Non Residential Civil Engineering 01 Construction materials and products 02 Construction equipment 03 Construction site labour Total project value 100% 100% 100% Contractors’ mark-ups Residential Non Residential Civil E. 01 Total mark-up of which, general site costs and temporary works 02 Head office overheads 03 Profit 04 Other contractors costs Professional Fees Residential Non Residential Civil E. 01 Overall percentage addition for professional services
Overall Validation Process Data Compilation National Level (Intra-country Validation) Initial data validation Finalization of data Regional Level (Inter-country Validation) Initial data validation Analytical Tables (QT/DT) Temporal Analysis Finalization of Data Global Level (Inter-country Validation Across Regions)
Timetable 2011 Dec Nov Sep Oct Jun Jul Aug Price collection will be conducted between July and October 2011 Mid year prices to be reported
