M3 CONCEPTS Flashcards
Who said this quote?
“For engineering and construction projects, accurate early cost estimates are extremely important to the sponsoring organization and the engineering team.”
Oberlender, 2000
a process, just like any endeavor that requires an end product. Information must be assembled, evaluated, documented, and managed in an organized manner.
Estimating
defined as an estimate that has been prepared before completion of detailed engineering, according to the Association for Advancement of Cost Engineering (AACE) International
Early Estimates
a valuation based on opinion or roughly made from imperfect or incomplete data; a calculation not professedly exact; an appraisement; also a statement, as by a builder, in regard to the cost of certain work.
Estimate
made during the project planning and design
phases, are necessarily approximate because they are compiled before the project is completely defined
Preliminary Cost Estimates
This analysis is based on the estimated expenditure per unit of use, such as cost per patient, student, seat, or car space. Construction expense may also be approximated as the average outlay per unit of a plant’s manufacturing or production capacity.
Cost per Function Estimate
This method involves estimating the price of a proposed structure through updating the construction cost of a similar existing facility. It is done by multiplying the original construction cost of the existing structure by a national price index
Index Number Estimate
This method of estimating facilities costs is an approximate cost obtained by using an estimated price for each unit of gross floor area.
Unit Area cost estimate
This estimate is based on an approximated expenditure for each unit of the total volume enclosed.
Unit Volume Cost Estimate
This analysis is based on unit costs per square unit area of floors, unit length of perimeter walls, partition walls, and unit roof area.
Panel Unit Cost Estimate
This analysis uses quantities of major work items taken from partially completed design documents. These are priced using estimated unit prices for each work item taken off. During the design stage, this type of estimate is considered to provide.
Partial Takeoff Estimate
- A detailed compilation of the nature and quantity of each type of work required.
- Taking off quantities is done in substantial detail, with the work being divided into many different work types or classifications (i.e. CSI divisions).
- It should be both accurate and consistent.
Quantity Survey
Typical Basis of Quantity Survey
- Drawings
- Technical Specifications or Notes
- Conditions imposed at the time of preparation
prepared by the client’s quantity surveyor, details the required work with associated quantities. If included in a contract, with adjustments permitted only through a variation order authorized by the client’s agent.
Bill of Quantities (BOQ)
General Principles for Taking-Off
a. Receipt of Drawings
b. Preliminary Study of Drawings
c. Queries with Designers
d. Initial Site Visit
e. Where to Start
General Principles for Taking-Off
Physical drawings should be dated, listed, and checked against a drawing register to track revisions. Any discrepancies must be clarified.
Receipt of Drawings
General Principles for Taking-Off
Before taking dimensions, the taker-off should review drawings for completeness and consistency, ensuring alignment between architectural and engineering plans.
Prelimenary Study of Drawings
General Principles for Taking-Off
Initial drawing reviews may highlight missing information or discrepancies. These should be documented using a Request for Information (RFI) and resolved early to prevent workflow disruptions.
Queries with Designers
General Principles for Taking-Off
A site visit helps visualize project conditions, assess site boundaries, access, utilities, and adjacent buildings, and document existing conditions through notes or photographs.
Initial Site Visit
General Principles for Taking-Off
If all drawings are available, the taker-off could follow the order in New Rules Measurement -NRM2, generally reflecting the construction process. However, incomplete designs may necessitate adjustments.
Where to Start
TRUE or FALSE
For Quantity Surveys, all measurements are taken from the internal face of external walls.
TRUE
TRUE or FALSE
For Quantity Surveys, deductions are made for internal walls, lift shafts, stairwells, etc. – gross internal floor area
FALSE
NO deductions are made
TRUE or FALSE
External works and non-standard items such as piling are calculated separately and then added
into the estimate.
TRUE
- Refers to the process of determining quantities for trade work sections in a Bill of Quantities (BOQ) or schedule.
- It involves extracting key dimensions from drawings and transferring them to take-off paper or software for quantification.
Taking-Off
