Operational Material
Outline
1
Resource Inputs and Basic Headings
2
Data Requirements
3
Overall Methodology
4
A 7-sheet Survey Questionnaire
5
Overall Validation Process
6
Timetable
2
Classification of the Construction
Sector
3 Basic
Headings
Residential
Building
Construction
and Civil
Engineering
NonResidential
Building
Civil
Engineering
3 Categories
of Input
Resources
50 Input Resources
Machinery
38
Materials & Products
Equipment
5
Equipment items
Labor
7
Labour services
Machinery
38
Materials & Products
Equipment
5
Equipment items
Labor
7
Labour services
Machinery
38
Materials & Products
Equipment
5
Equipment items
Labor
7
Labour services
3
Data Requirements
Materials
1
…
38
Residential
Non Residential
Civil Engineer.
Expenditure Value
Expenditure Value
Expenditure Value
Resource Mix [%]
Resource Mix [%]
Resource Mix [%]
Importanc
e
Importanc
e
Importanc
e
Importanc
e
Importanc
e
Importanc
e
Importanc
e
Importanc
e
Importanc
e
Price
Price
Price
Price
Price
Price
Price
Price
Price
Equipment
Resource Mix [%]
Resource Mix [%]
Resource Mix [%]
1
Hire Rate
Hire Rate
Hire Rate
…
…
…
…
5
Hire Rate
Hire Rate
Hire Rate
Labour
Resource Mix [%]
Resource Mix [%]
Resource Mix [%]
1
Labor Rate
Labor Rate
Labor Rate
…
…
…
…
7
Labor Rate
Labor Rate
Labor Rate
Contractor’s mark-ups
…
…
…
Professional Fees
…
…
…
4
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
5
A 7-Sheet Survey Questionnaire
1
Identification Form
2
Explanatory Notes
Introduction
3
Material
4
Equipment
5
6
7
5 Technical
Survey Forms
Labour
Project Prices (Optional – used as checks on
input based PPPs)
Supporting Information
6
1. Introduction
1 Country
2 Currency
Survey respondent
3 Name
4 Employer
5 Type of Employer
Consultant
academic
research
Govern.t
Other
6 Contact details
7 Telephone
8 Email
Purpose of the survey
collect mid year national average prices
Base date for prices
9 Please tick box
Prices averaged over the year
Mid year prices
National average price level
10 Geographical base
11
National average factor
7
2. Notes – Item Descriptions
General
notes
Item
descriptions
and units
Identify
If products
specs.
Locally
available
Commonly
used
Materials
and
services
Identical or
equivalent to
prescribed
items
and collect
their
prices
Not identical but equivalent
Report in
Columns
10
For materials & equipment
Report in
Column 5
For labour
Report in
Column 4
Other notes (materials,
equipment, labour)
Report in
Proprietary products
Not metric dimensions
If
alternative
units of
measure.
If unit not
per hour
Columns
10, 8 or 7
Report
Situation
Number of
hours
For equipment hire, if per day
or week
In Column 5
In Column 8
For labor, if different unit
In Column 4
Column 5
8
2. Notes - Prices
Types of prices
Materials
Equipment hire
Labour
Actual purchasers’
prices
Rental charges
Actual employment
cost
Geographical location
Prices can be
influenced
Site context
Size of projects
Local resource and distribution costs,
geographic, seismic or climatic conditions,
local market conditions, etc.
Respondents should assume reasonable site
contexts with good access.
The larger the projects, the larger the
quantities, and hence lower unit costs.
9
3. Material – Layout of the questionnaire
1
2
3
4
5
6
7
8
9
10
Ref
Item
Specifications
Notes
Pref.
Unit
Alternati
ve. Unit
Unit
Price
Residential
Non
Residential
Civil
Engineering
Notes and Comments
01
Aggregat
e for
concrete
Clean, hard,
strong
m3
1
1
1
1
02
1
1
03
1
1
36
1
37
38
1
Electriv
ity
Typical
average
commercial..
KWhr
1
1
Enter “1” or “*” if important
Comments
10
4. Equipment – Layout of the questionnaire
1
2
3
4
5
6
7
Alternative.
Unit
Unit Price with
operator
Unit Price without
operator
Ref
Item
Specifications
Notes
Pref.
Unit
01
Wheeled loader and
excavator
1.0m3 loader
capacity
hour
Compact track
loader
Rated
capacity: 864
kg
hour
8
Notes and comments
02
03
04
05
Comments
11
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
05
Structural steel worker
hour
06
Electrician
hour
07
Machine (equipment) operator
hour
02
03
04
Comments
12
6. Project Prices – Layout of the questionnaire
1
2
Ref
Project Type
01
Single storey average quality detached house masonry
(brick or block) or timber frame
02
Two storey attached house, mass market, centre unit in terrace/
row of four units, otherwise as above
3
4
5
Pref.
Unit
Alternative.
Unit
Unit rate
m 2 floor
area
m 2 floor
area
m 2 floor
area
m 2 floor
area
6
Notes and comments
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.
13
7. Supporting Information – Layout of the
questionnaire
The mix of construction resources
01
Construction materials and products
02
Construction equipment
03
Construction site labour
Total project value
Contractors’ mark-ups
01
Total mark-up of which, general site costs and
temporary works
02
Head office overheads
03
Profit
04
Other contractors costs
Professional Fees
01
Overall percentage addition for professional
services
Residential
Non
Residential
Civil
Engineering
100%
100%
100%
Residential
Non
Residential
Civil E.
Residential
Non
Residential
Civil E.
14
Example of Resource Mixes
Residential
Non-residential
E
27%
M
63%
M
63%
L
10%
E
25%
L
12%
Civil Engineering
M
47%
E
23%
L
30%
15
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)
16
Timetable
2011
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Price collection will be
conducted between
July and October 2011
Mid year prices to be
reported
17
THANK YOU
18