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The analysis is actually done to be used by the designer and the client for future project and therefore, comparison between two or more buildings can be made.
This is brief project cost information gathered from bills of quantities.
Apart from the cost analysis, information such a brief project specifications and the overall project information are also included in the ECA.
Purpose for ECA
To show the cost relationships between several sections/ parts of the building, if there are any.
To allow comparisons of cost with other different projects.
The cost that is obtained from the cost analysis is insufficient to determine the actual price. It has to take into account the conditions and the details of the project and the quality and quantity of work involved. The cost analysis has been introduced to provide cost information especially for the process of cost planning.
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The cost analysis is prepared by examining the information of a project which has been planned or constructed in which the bills of quantities have been priced. Therefore, the cost analysis is prepared based on the data received from the successful tender and is not based on the ‘actual’ sum of the project. However, there are several reasons as to why the cost analysis is not prepared based on the ‘actual’ cost:
The final account is often complex and requires much ttime to analyze the changes in the account. This would result in the decreasing interest of the individual preparing the cost analysis.
The preparation of the final account is time consuming due to several reasons and this could result in the cost analysis that is published to be out-dated
The historical data for cost planning may not be accurate especially during high inflation (although there are procedures to update this by using indices).
It is difficult to make allocations for the increase in cost and contractual claims, which are tailored to the individual elements.
Uses of ECA
It enables clients and designers to know and appreciate how cost is distributed among the functional components of a building and compared to the overall cost of a building.
It enables clients and designers to develop ideas as to how element costs could have been allocated to obtain a more balanced design. This judgement is important to gauge the effectiveness of cost and quality of a building.
Belated remedial action
Allows remedial action to be taken on receipt of high tender, by revealing the sources of over-expenditure that is by making comparisons between estimated costs and tender price. This will enable belated remedial action to be taken.
The cost analysis could be used as a source of cost information to help with the cost planning of future building projects.
Abbreviations of forms
To simplify the elaboration the author will use the following abbreviations for each form.
Form 1 – F/1
Form 2 – F/2
Form 3 – F/3
FORM 1 – Information on total project and analyzed building
This form is divided into two sections; the first section provides overall information on the project including the location, the client, type of contract etc. The second section provides information and analysis of a single building. Each separate building in the project has a different analysis.
The main purpose for the information in Form 1 is to inform the user of the analysis the background of the project and the condition of its price level. This will enable the user to make the necessary adjustments to cater for differences in location, market condition, type of contract, size of contract and specifications of the project.
Building type and Code :
There are ten classifications on types of building based on (C1/SfB Classification – Table 0):
0 : Land, Planning, Landscape
1 : Civil Engineering Work
2 : Transport, Industrial Buildings
3 : Administrative Buildings
4 : Health and Welfare Buildings
5 : Refreshment, Recreation Buildings
6 : Religious Buildings
7 : Educational, Cultural, Scientific Buildings
8 : Residential Buildings
9 : Buildings, Spaces in general
Residential Buildings for this project shall be classed under category 8: – Buildings, Spaces in general
Construction classes are divided into:
A : Reinforced concrete framed construction
B : Steel framed construction
C : Timber framed construction
D : Light framed steel or reinforced concrete construction
A – 2 – 321
A 2-storey reinforced concrete framed construction with Gross Floor Area of 321m2 is expressed as follows:
The combination of a 2 storey hall building made of reinforced concrete framed construction with Gross Floor Area of 321m2 is expressed as follows:
A – 321
3- Residential Buildings
3) Job Title: Cadangan Membina Sebuah Banglo 2 Tingkat
4) Location: Daerah Melaka Tengah, Melaka
5) Client: State the type of client whether government, private or semi government-Private
6) Tender date: Date fixed for close of tender- 7/1/2007
INFORMATION ON TOTAL PROJECT
7) Project details and site condition:
Explanation shall include the following:
Accessibility to site
Proximity of other buildings
Site topographical and geological conditions
Any omission or exclusion from project
Example of elaboration: The project comprise the construction and completion of 2 storey banglo and associated ancillary building and external works. The purpose site is flat and in good condition.
8) Contract: Type of contract used – Standard PAM Form of Contract (with quantities)
9) Market Condition: Brief report on market condition shall be provided with regard to availability of materials and labour, keenness and competition – Market condition is competitive and price of labour and materials are stable.
10) Tender List:
List of tenders received. If the number is too many, state at least the lowest five, arranged in descending order. The highest tender value is listed last in the table. Indicate whether tenders were from local builders (L), by international builders (INT), or by joint venture between the two (JV). Refer to tender report.
If there are only a few tenders, the list is as follows:
If the tender list is extensive, the list is as follows :
*The highest tender value
11) Gross Floor Area:
Method of measurement:
Total of all enclosed spaces fulfilling the functional requirements of a building measured to the internal face of enclosing walls (or column, door and the like)
Enclosed spaces are defined as all spaces that have a floor and a ceiling and enclosing walls on all sides at full or partial height. Open balustrades, louvers, screens, columns and the like shall be deemed enclosing walls.
The gross floor area is measured gross without omission to areas occupied by columns, internal structures or party walls, etc.
Areas of lift rooms, tank rooms, engine rooms and the like above main roof are also calculated in GFA.
Sloping surfaces such as staircases, galleries, tiered terraces and the like shall be measured flat on plan
Spaces that fulfill the functional requirements of building which are not enclosed spaces shall be shown separately under Unenclosed Spaces.
B & L: Measured gross without omission to areas occupied by columns, staircases and partitions.
GFA = 6156m2
Usable area 231
Circulation area 32
Ancillary area 48
Internal divisions 10
FORM 2 – Summary of element costs
In general, Form 2 shows the systematic breakdown of the costs of elements of a building. There are more than 20 elements in Form 2 and each element is grouped under six group elements (five building groups and one for each group element of external work and preliminary work). Form 2 provides information on the total cost of element, cost per m2 GFA, element unit quantity, element unit rate, ratio of element per m2 GFA, etc which could be used to make a realistic estimate and to prepare the cost plan for new projects. It could also be used to make cost comparisons to ensure cost does not exceed the estimate.
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Total cost of element (RM):
This is the total cost of element and the cost shall follow the List and Contents of element in the Manual. If cost is not related to the said element, (-) shall be inserted. If costs of more than one element are group together, abbreviated notes shall be provided explaining where they are grouped. All the total cost made from Bills of Quantities or calculated by EUQ x EUR.
WBLFF : Total cost of element = EUQ x EUR
= 136 m2 x 125
= RM 17000.00
Cost/m2 GFA (RM) :
Calculated by dividing Total Cost of element with GFA.
FRAME : Cost/m2 GFA = Total Cost
= RM 255,200
= RM 795.016/m2
Element Unit Quantity :
All areas shall be the net areas, for example, area for external walls shall omit area of windows and doors, etc. if the quantity is measured in volume (air conditioning spaces) volume is calculated by multiplying the net area with the height of the space to be air conditioned. The abbreviation used is Tm3. All the amount according to taking off or measured through drawings.
Element Unit Rate (RM) :
Calculated by dividing Total Cost of Element with Element Unit Quantity. It is rounded off to the nearest ringgit.
UPPER FLOORS : Element unit rate = Total Cost
= RM 8000.00
Element Ratio /m2 GFA :
Calculated by dividing Element Unit Quantity with GFA. It is stated to three decimal places.
ROOF : Element ratio/m2 GFA = EUQ
= 204 m2
Reinforced Concrete (m3) :
Quantity of reinforced concrete in elements in m3.
Reinforcement (kg) :
Quantity of reinforcement in kg.
Formwork (m2) :
Quantity of formwork in m2.
FORM 3 – Brief Specification
Form 3 provides brief information on project specifications based on each element. It briefly describes the various components in each element including the types and quality of materials used. This form provides a brief picture of the building standards and quality and this information is important for cost comparison purposes.
It can be refer to the list and contents of elements. Elaborate briefly the specifications according to the elements. All the specification had made from Bills of Quantities.
For example of the specification in the elemental cost analysis, in piling works, the specification must have all works related to foundation piling including sheet piling left in and also need to state the system used, whether it is consultants design or otherwise, number, average length and size of the pile.
BENEFIT OF ELEMENTAL COST ANALYSIS
ECA means the analyze of cost related to the elements, in construction industry a building or any kind of construction we can divide into number of elements, and price of which is related with that element is called as an elemental cost, elemental costs include material costs, labor costs, and sub-contractor overhead and profit.
ECA is also important and give benefits due to the companies that can intends to establish a cost information service by setting out goals and collecting information in a planned and systematic way in collecting and spreading information on a number of elemental cost plans available at the moment. These cost plans will further expanded and users will be able to select the database using a range of criteria, among others, type of building, floor area, date, client type, number of stories, location and method of construction.
ECA does help a quantity surveyor when it comes to similar projects that are gone to be built next due to its feature that act as a reference about the price or cost information that is useful to prepare a budget plan. Although it is roughly similar, the project that is being compared to previous project’s ECA must be in the relevant range of time
The Elemental Cost Analysis (ECA) is relevant to used. The cost analysis is prepared by examining the information of a project which has been planned or constructed in which the bills of quantities have been priced. Therefore, the cost analysis is prepared based on the data received from the successful tender and is not based on the actual sum of the project. That is the price quoted in the Final Account. There is a possibility for some to think that it would be better to analyses the actual cost as compared to the cost predicted in the tender.
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