Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
TOPIC 1:
PRELIMINARY
ESTIMATES
DEFINATION AND IMPORTANCE
OF PRELIMINARY ESTIMATES
DEFINATION
 Defined as an activity in particular work to make
possible...
USE OF THE PRELIMINARY
ESTIMATE METHOD
 To ascertain the actual cost forecast of a
project.
 Assist the client in knowin...
Cont’d
 If the estimate is higher that the client budget
for that particular project, the following could
be carried out ...
Cont’d
 If the estimate is low than the allocated
sum, the following could be done
 Accept the estimate
 To modify the ...
METHOD FOR PRELIMINARY
ESTIMATE
 UNIT
 CUBIC
 FLOOR AREA
METHOD WHEN IT IS USED NOTE
UNIT OF
MESUREMENT
UNIT
Inception feasibility
Appropriate for project
that have standard unit
...
THE SELECTION OF THE
METHOD WILL DEPEND ON
 The information and time to prepare the
estimate
 The experience of Quantity...
UNIT METHOD
 This method is also referred to as ‘cost according to
building function’
 Estimate the building cost base o...
USAGE
 The cost estimate is obtained by multiplying the
number of accommodation for a new building with
the cost per unit...
Example:
Estimate the total cost to build a mosque to house a
congregation of 500 individuals.
From a suitable cost data, ...
CUBIC METHOD
 In Malaysia this method is seldom or almost
never used
 Only in certain case, it is utilized
 To calculat...
USAGE
 Measure the volume of the new building and
its volume is then multiplied with the suitable
price rate per m3
 Unr...
i. Height of pitch roof
from the top surface of the foundation to
half apex / height of roof
ii. Height of flat roof
From ...
L
W
Flat roofPitch roof
Example
Estimate the total cost to build a 2-storey bungalow if the
construction cost/m3 of a similar construction is RM
5...
20.00
10.00
1.00
3.50
3.50
1.50
a) Pitch roof
Building volume = 20.00 x 10.00 x [1.00 +2(3.50) + ½ (1.50)]
=20.00 x 10.00 x 8.75
=1750m3
Total building co...
b) Flat roof
Building volume = 20.00 x 10.00 x [1.00 +2(3.50) + 0.60]
=20.00 x 10.00 x 8.60
=1720m3
Total building cost = ...
Floor area method
 Make a preliminary estimate as most of the cost data
are kept or are available in this form
 The meas...
Cont’d
 The rate per m2 chosen must be current rate as
building cost often differ
 The site, external works, condition o...
USAGE
 The floor area of a building to be erected. Only the
building used this floor area method. Other works
may use oth...
EXAMPLE
Estimate the cost of the building by referring to the plans
given if the construction cost is RM 1,500/m2
25.00
8....
CONT’D
Floor area
Ground floor
25.00 x 5.00 = 125.00
10.00 x 3.00 = 30.00
5.00 x 7.00 = 35.00
190.00
First floor
25.00 x 5...
UNIT CUBIC FLOOR AREA
 Fast and easy
 Easiest method to
obtain cost limit to
prepare the monetary
allocations for severa...
DISADVANTAGES
UNIT CUBIC FLOOR AREA
 An unrefined method
and in accurate. Only
suitable to provide
and overall
approximat...
Upcoming SlideShare
Loading in …5
×

Preliminary estimate

39,048 views

Published on

Published in: Education, Business, Technology
  • As a single mother every little bit counts! This has been such a great way for me to earn extra money. As a single mother every little bit counts! Finally, a vehicle for making some honest to goodness real money to make life easier and happier now that I don't have to pull my hair out budgeting every penny every day.Thanks for the rainbow in my sky. ●●● http://ishbv.com/goldops777/pdf
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • DOWNLOAD THIS BOOKS INTO AVAILABLE FORMAT (2019 Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { https://soo.gd/irt2 } ......................................................................................................................... Download Full EPUB Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download Full doc Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download PDF EBOOK here { https://soo.gd/irt2 } ......................................................................................................................... Download EPUB Ebook here { https://soo.gd/irt2 } ......................................................................................................................... Download doc Ebook here { https://soo.gd/irt2 } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book THIS can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THIS is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBooks .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, Cookbooks, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, Ebooks, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story THIS Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money THIS the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths THIS Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • ♥♥♥ https://tinyurl.com/y4urott2
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Your opinions matter! get paid BIG $$$ for them! START NOW!!.. ▲▲▲ http://ishbv.com/surveys6/pdf
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Get access to 16,000 woodworking plans, Download 50 FREE Plans... ➤➤ http://ishbv.com/tedsplans/pdf
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here

Preliminary estimate

  1. 1. TOPIC 1: PRELIMINARY ESTIMATES
  2. 2. DEFINATION AND IMPORTANCE OF PRELIMINARY ESTIMATES DEFINATION  Defined as an activity in particular work to make possible offer to execute task base on a stipulated sum  Technique to forecast the possible cost incurred for a certain building or construction project via a systematic calculation employing certain method, prepare at early stage of the project  Is a part of the cost planning process that is controlling of the project cost at the design stage before any drawings are embarked upon.
  3. 3. USE OF THE PRELIMINARY ESTIMATE METHOD  To ascertain the actual cost forecast of a project.  Assist the client in knowing to what extent he need to be financially committed to a particular project  Estimated is also function as a design guide whether the project to the allocation made either
  4. 4. Cont’d  If the estimate is higher that the client budget for that particular project, the following could be carried out :-  The design could be altered to reduce the cost  Extra provisions are sought after or requested from the client  The project is postponed or cancelled
  5. 5. Cont’d  If the estimate is low than the allocated sum, the following could be done  Accept the estimate  To modify the design and/or the specifications to increase the estimate appropriate to the provision set aside.
  6. 6. METHOD FOR PRELIMINARY ESTIMATE  UNIT  CUBIC  FLOOR AREA
  7. 7. METHOD WHEN IT IS USED NOTE UNIT OF MESUREMENT UNIT Inception feasibility Appropriate for project that have standard unit of accommodation, its commonly used to establish the cost limit for public sector project Cost/student Cost/classroom Cost/bed Cost/ chair CUBIC Outline proposal Used to calculate the volume of air- conditioned space or space which is given mechanical ventilation Cost/m3 FLOOR AREA Outline proposal Used extensively, can be used for almost all types of building Cost/m2
  8. 8. THE SELECTION OF THE METHOD WILL DEPEND ON  The information and time to prepare the estimate  The experience of Quantity Surveyor  The total and type of cost data available
  9. 9. UNIT METHOD  This method is also referred to as ‘cost according to building function’  Estimate the building cost base on the size depends on the population unit  Example: the total number of student in a school, total number of bed in a hostel or hospital and etc.  Easier method but the most unrefined.  Total population can be obtained from the client or the design team
  10. 10. USAGE  The cost estimate is obtained by multiplying the number of accommodation for a new building with the cost per unit of accommodation based on a suitable building  The current unit of accommodation can be obtained by calculating from the sketch design or by obtaining information from the client.
  11. 11. Example: Estimate the total cost to build a mosque to house a congregation of 500 individuals. From a suitable cost data, get the cost/ congregation of a similar mosque that has been updated. Lets us say that the cost is RM 1400.00/ congregation. Total cost = Number of accommodation x cost/congregation 500 individuals x 1,400 = RM 7000,000.00
  12. 12. CUBIC METHOD  In Malaysia this method is seldom or almost never used  Only in certain case, it is utilized  To calculate the space which is need to be air- conditioned  To calculate the space that needs mechanical ventilation
  13. 13. USAGE  Measure the volume of the new building and its volume is then multiplied with the suitable price rate per m3  Unrelated works is to be volume must be calculated separately  The volume of the building is calculated as follows: Volume = length x width x height
  14. 14. i. Height of pitch roof from the top surface of the foundation to half apex / height of roof ii. Height of flat roof From the top surface of foundation to 600mm above the flat roof or parapet wall (which is higher)
  15. 15. L W Flat roofPitch roof
  16. 16. Example Estimate the total cost to build a 2-storey bungalow if the construction cost/m3 of a similar construction is RM 550.00. estimate the construction cost base on a) Pitch roof b) Flat roof
  17. 17. 20.00 10.00 1.00 3.50 3.50 1.50
  18. 18. a) Pitch roof Building volume = 20.00 x 10.00 x [1.00 +2(3.50) + ½ (1.50)] =20.00 x 10.00 x 8.75 =1750m3 Total building cost = volume x cost/m3 =1750m3 x RM550.00 =RM962,500.00
  19. 19. b) Flat roof Building volume = 20.00 x 10.00 x [1.00 +2(3.50) + 0.60] =20.00 x 10.00 x 8.60 =1720m3 Total building cost = volume x cost/m3 =1720m3 x RM550.00 =RM946,000.00
  20. 20. Floor area method  Make a preliminary estimate as most of the cost data are kept or are available in this form  The measurement for GFA must be similar between the new building and the analyzed building  Need to consider criteria in measurement of area  In the calculation the floor area of a building there are several criteria need to be taken 1. The actual area of the building 2. If the project offers a standard or different type of accommodation it is better for each to be priced separately 3. Unrelated work to the area, for example, external work must be priced separately
  21. 21. Cont’d  The rate per m2 chosen must be current rate as building cost often differ  The site, external works, condition of contract, the quantity and the quality of equipment and others that related to the floor area must be calculated separately  It is clear and difficulty of this method lies in choosing the appropriate rate, which requires experience, observation and familiarity toward varied building types
  22. 22. USAGE  The floor area of a building to be erected. Only the building used this floor area method. Other works may use other method like approximate quantity. Total cost = area x cost/m2 gross floor area (GFA) Area – calculate the area of the building. The measurement method differs according to practices Cost/m2 GFA – from similar building type and function
  23. 23. EXAMPLE Estimate the cost of the building by referring to the plans given if the construction cost is RM 1,500/m2 25.00 8.00 10.00 3.00 15.00 5.00 25.00 10.00 10.00 7.00 5.00 Ground floor plan First floor plan
  24. 24. CONT’D Floor area Ground floor 25.00 x 5.00 = 125.00 10.00 x 3.00 = 30.00 5.00 x 7.00 = 35.00 190.00 First floor 25.00 x 5.00 = 125.00 10.00 x 3.00 = 30.00 155.00 345.00 Total cost = area x cost/m2 Gross Floor Area = 1500.00 x 345.00 = RM 517,500.00
  25. 25. UNIT CUBIC FLOOR AREA  Fast and easy  Easiest method to obtain cost limit to prepare the monetary allocations for several years to come  No necessity for drawings  The estimate can be prepared quickly  The client and architect easily understand the concept of floor area. most work items are appropriately associated with the concept of floor area rather than the volume method  Cost data easily available as most of the data from previous project most utilize this method ADVANTAGES
  26. 26. DISADVANTAGES UNIT CUBIC FLOOR AREA  An unrefined method and in accurate. Only suitable to provide and overall approximate estimate  Does not take into account changes to plan, number of storeys and other factors related to design  Unrelated work concerning unit of accommodation has to be calculated separately.  Does not take into account changes to plan, height, of storey and the overall height of the building  Unrelated work to the volume has to be calculated separately  Does not help architect in design work as it is difficult to predict or to know the effects of the changes to specifications, design, etc. to the cost per m3  Difficult to obtain similar cost data  Does not take into account changes to plan, height, of storey and the overall height of the building as these factors effect the building cost  Other work which are not related to the floor area must be calculate separately  Difficult to calculate and allocate the cost for different site conditions, quality of materials, condition of contract and etc.

×