1
Q
Types of Estimates
A
Conceptual, Schematic, Design Development, GMP or Construction Documents (CD)
2
Q
Four steps to an estimate
A
- Break the project into WBS tasks
- Assign a cost to each WBS task
- Summarize the “Direct Construction Costs”
- Add all “Indirect Construction Costs”
3
Q
Four principals to develop the WBS
A
- No overlap of scope between work packages
- Each work package should have a definitive start and end date
- No overlap of cost between work packages
- Final breakdown work package should be at level where progress can be measured precisely
4
Q
CORE Construction Presentation - Living Estimate
L S I G E Q G F
A
- Listen
- Study Cost History
- Investigate
- Gather Subcontractors Feedback
- Explore Options
- Quantity Scope
- Generate Detailed Estimate
- Forecast Future Market Conditions
5
Q
Documents needed to estimate costs
C G D S S S C I I B
A
- Contract Agreement
- General Conditions
- Drawings
- Specifications
- Soil Report
- Schedule
- Clarifications
- Inclusions
- Insurance requirements
- Bonds requirements
6
Q
CSI MasterFormat Groups (2)
A
- Procurement/Contracting Requirements Group
- Specifications Group
7
Q
Divison 01
A
General Requirements
8
Q
Division 02-19
A
Facility Construction
9
Q
Divison 20-29
A
Facility Services
10
Q
Division 30-39
A
Site and Infrastructure
11
Q
Division 40-49
A
Process Equipment
12
Q
3 Parts of SectionFormat
A
General, Products, Execution
13
Q
Earthwork Units
A
BCY/LCY and CCY and Acres
14
Q
Concrete Units
A
CY
15
Q
Concrete Formwork Units
A
SFCA (SF of Contact Area)
16
Q
Masonry Units
A
SF to #of blocks
17
Q
Rebar Units
A
lbs. or tons
18
Q
Roofing Units
A
Square
19
Q
Carpet
A
Square Yard
20
Q
Structural Steel
A
tons
21
Q
Direct Construction Costs =
A
Materials + Labor + Equipment
22
Q
Indirect Construction Costs=
A
Fees + Insurances + Bonds + Taxes
23
Q
Sources of Cost Information
A
- Historical costs database
- Subcontractor/Vendor Quotations
- Published Cost Data (RS Means)
- Experience
24
Q
Unit Cost Pricing =
A
Material + Labor + Equipment
25
Labor Hours per Unit=
total crew labor hours/daily output
26
Labor Dollars per Unit=
Daily Crew Labor Cost/Daily output
27
Work hours per unit=
crew work hours expended/daily output
28
units per work hour=
daily output/crew work hours expended
29
total work hours=
work hours per unit x planned quantity
30
total number of crew days=
planned quantities/daily output
31
Loose Volume=
bank volume x (1 + swell)
32
Bank Volume (imported soil)=
compacted volume/shrinkage factor
33
Imported soil (lcy)=
Compacted volume/shrinkage factor
34
Which document describes quality of work and the quality of the material and the construction execution procedures?
Technical Specifications
35
Which document issued by the architect illustrates what is to be built at the time of bid?
Plans
36
Which type of estimate is most appropriate when the contract documents are 30% to 90% complete?
Semi-Detailed estimate
37
Which estimate will give you the most level of details and be the most accurate?
Detailed estimate
38
During the design process, in which order are the different drawing sets completed?
Conceptual - Schematic Design - Design Development - Construction Drawings
39
T or F: In a CM@R delivery method, it is highly recommended to wait until the Design Professional has completed the 100% construction documents to hire the contractor and get pricing from its estimating department. This will prevent any change orders in the future.
False
40
List at least 3 factors that could affect the productivity rate of a crew on a jobsite
- Number of men in crew
- Other subs being behind
- Materials are not coming on time
41
Which type of insurance covers injuries to construction site workers employed at the job site?
Workers compensation
42
How does a construction company typically structure its accounting cost codes?
Typically organized following the CSI Materformat divisions, with some adaptions by companies
43
Accuracy of a detailed estimate is
2% to 4%
44
Accuracy of a conceptual estimate is
+/- 20%
45
Accuracy of a semi-detailed estimate is
+/- 5% to 10%
46
Division 01
General Requirements
47
Division 02
Existing Conditions
48
Division 03
Concrete
49
Division 04
Masonry
50
Divison 05
Metals
51
Division 06
Wood, Plastics and Composites
52
Division 07
Thermal and Moisture Protection
53
Divison 08
Openings
54
Division 09
Finishes
55
Divison 10
Specialties
56
You can find Electrical specifications under which division in the CSI MasterFormat?
Division 26
57
Which of the following items would not be included in a division 7 scope of work?
Architectural louvers/screens
58
Which type of insurance covers workers being laid off from their job?
Unemployment
59
What is a Work Breakdown Structure?
A list of tasks braking down the project into manageable work packages
60
T or F: Contingency is typically used to cover the risks that occur during a CM at risk project
True
61
A WBS typically includes which of the following for each work package?
The budgeted cost of the work scheduled
62
T or F: The "art" of estimating is being able to account for the unknown, the unseen and the unexpected
True
63
T or F: It is not important to verify that the General Project Description provided in a Geotechnical Report is accurate
False
64
What is the soil state called after the soil is put in place at its final location and final compaction ratio?
compacted
65
What is the earth material drawn from an excavation called?
Spoil
66
When excavating for utility trenches, it is important to note the soil characteristics/classification to:
Know if we will need to dig through hard rock that will require special equipment, and if we will need to use shoring
67
Trying to save cost on the geotechnical investigation scope by not doing as many soil borings as needed may result in:
All of the proposed answers and potential litigations on the project
68
T or F: The swell/shrink factor of a soil indicated in a soil geotechnical investigation report is the same thing as the swell factor used by earthwork contractors to estimate LCY of soils to be exported
False
69
The soil conditions indicated in the geotechnical report will help us price the following potential added cost to earthwork scope:
Hard rock digging, dewatering and over excavation
70
What is the soil state called if it is in its natural, or in place, or in situ, or undisturbed state?
Bank
71
Under which conditions would you want to epoxy coated rebar and welded wire fabric?
To prevent corrosion of the rebar/WWF
72
A welded wire fabric is called for on the drawings as WWF 8 x 8 - W6xW6
What does that mean?
It comes in sheets that are 8' x 8' and weighs 600 pounds
73
Other than the concrete strength expressed in PSI (i.e. 3,000 PSI concrete), list at least 3 concrete specifications that could add cost to the price of concrete CY:
Different admixtures that are required in the mix (mix design)
Reinforcement required in the specifications
Formwork required - what kind (earth form, reused, etc.)
74
T or F:Reinforcing bars are listed by the bar number, which corresponds to the bar diameter in 10th of an inches.
For example, a No. 7 bar (also referred to as a # 7) has a 0.7 inch nominal diameter.
False
Estimating
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