1.Preliminary model
estimation and
2.Actual Model
costing
Prepared by:
Assoc. Prof. Sr Dr. Mastura Jaafar
PART A:Preliminary
model estimation
Is
a
cost
estimation/planning for
developing your model.
Objective: To enable the
design
team
to
determine how much is
needed for developing a
model
1.Taking Off-To know the quantity of material, type of
material and unit used.
2. Need to know the price of material-Where to get the
price?
Supplier
Internet-CIDB website/JKR
Contractor/consultant
How to get the quantity of the
materials?
Model drawing and its specification-roof plan/floor
plan/elevations.
Information from the drawing:Type and size of material
Connection
Finishes-paint
Examples
Examples
Examples
Taking off sheet
Waqf
4
Nos
100
Pcs
Column 4” X 4”
Concrete roofing tiles
20
Nos
Timber 1” X 1” (300’ length)
Costing estimations
Material
Labour
Equipment
Wastage
Profit
Basic elements
Elements
Element of Quantity
Material
Plywood, roofing material, nails, batten 1” X 2” etc
Labour
RM50.00/days/8 hours
Wastage
% according to the type of material
Profit
10% from the overall model cost
Equipment
Saw, hammer, cutter, electric drill,
(Based on actual market price)
Cost Estimation
Quantity of material X price (RM) =material price (M)
Wastage (…..% from M)= W
Labor= how many hours X how many people X
rate/hour (RM) =L
Equipment (buying)=E
Profit (10% from {M+L+W+E} =P
Total cost estimation = M+L+W+E+P
To assess whether a balanced distribution of costs
have been achieved amongst the various elements
of the model.
To provide comparison of costs of the preliminary
estimation and actual costing
Actual cost estimation based on weekly estimation.
Students need to provide:
1. Preliminary model estimation2. Weekly model estimation-based on actual work done
3. Actual model costing=accumulative of weekly
estimation with a report on costing comparison between
1 and 3.
The actual model costing for the new project is
ready.
1. Preliminary model estimation = RM1,500.00
2. Weekly model estimation-based on actual work done
(could be different from PME either +/-)
Week 1 =RM500.00
Week 2=RM1,200.00
3. Actual model costing based on work done =Week
1+Week 2=RM1,700.00
4.Cost Differences in
estimation =RM 200.00
cost
planning
and
actual
PART C: ELEMENTARY ESTIMATION
Objective: To propose estimation based each model
elements.
Task: Students need to provide estimation based on
each model elements that are:1.Foundation/ground beam
2.Column
3.Floor
4.Wall
5.WallFinishes
and
6.Column
(The element list depending on each proposed model)
1. Preliminary model estimation = 29th Nov
2. Weekly model estimation=weekly report (together
with other reports-A4)=29th Nov and 9th Dec
3. Actual model costing and Cost Differences = 9th Dec
4.Elementary estimation = 9th Dec.