Estimating

The Unit of Time used to estimate labor is:

The Work Hour as the amount of work one person can do in one hour

What does the reference to Level 4 or Level 5 mean related to gypsum board?

The amount of "mud" to apply over the taped joints, and the amount of sanding to do to obtain a smooth wall finish

A Work Breakdown Structure (WBS) typically includes which of the following for each work package?

The budgeted cost of the work scheduled

It is not important to verify that the General Project Description provided in a Geotechnical Report is accurate.The design recommendation for the foundation system will be the same, regardless of the type of buildings constructed on the site.

False

Mortar and grout are the same thing when it comes to masonry takeoff.

False

Reinforcing bars are listed by the bar number, which corresponds to the bar diameter in 10th of an inches.

False

A masonry wall is 16'-8" long and 22'-0" high. It is made of 8" x 8" x 16" CMU blocks. It needs to be solid grouted for fire resistance, and it needs some rebar reinforcing. We assume that we'll need 3 lbs of rebar per SF of wall. How many pounds of rebars do you need to build it, accounting for 5% waste?

16.67' long x 22' high = 367 square feet Multiply by 3 lbs/SF = 1,101 lbs Multiply by 1.05 to account for the 5% waster = 1,156 lbs

A house floor plan is showing to be 42'- 6" x 35'- 3". The house has a gable roof, with a 6:12 roof slope, and the roof overhangs 2'-0" all around the house.What is the actual area of metal roof needed, in the unit typically used for roofing?

20.40

Which of the following items would not be included in a division 7 scope of work?

Architectural louvers/ screens

The Soil Tables and formulas contain the abbreviation BCY. What does BCY mean?

Bank Cubic Yards

Concrete quantities are estimated in:

Cubic Yard (CY)

Under which division in the CSI MasterFormat can you find the Exterior Doors specifications?

Division 6

Under which division in the CSI MasterFormat can you find the Millwork cabinets specifications?

Division 6

Under which division in the CSI MasterFormat can you find the Sheathing specifications?

Division 6

Under which division in the CSI MasterFormat can you find the Wood fascia and trim specifications?

Division 6

Under which division in the CSI MasterFormat can you find the Cementitious Siding specifications?

Division 7

Under which division in the CSI MasterFormat can you find the Dampproofing specifications?

Division 7

Under which division in the CSI MasterFormat can you find the Insulation specifications?

Division 7

Under which division in the CSI MasterFormat can you find the Roofing specifications?

Division 7

Under which division in the CSI MasterFormat can you find the Glass & Glazing specifications?

Division 8

What subcontractor(s)' scope(s) would need to be coordinated closely in order to provide fully operating access control devices on a door?

Door, Frame & Hardware Subcontractor + Electrical Subcontractor + Building Controls Subcontractor + Fire Alarm Subcontractor

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

The price of a roofing system will not be affected by the manufacturer warranty requirements on the roof.

False

To do a thorough review and prepare a bid analysis of Door, Frame & Hardware Subcontractors' proposals, you only need to make sure that they have priced the latest set of drawings and specifications, that they acknowledged all Addendums ,and that they have all spec' sections included (i.e.: doors, frames, hardware, etc.).

False

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

The amount of time required for a mason to lay a masonry unit varies with the [a], [b], and [c] of the unit.Therefore, it is important to separate each type of masonry when doing takeoff.

Size, weight, shape

What is the earth material drawn from an excavation called?

Spoil

Roofing is typically taken off by which unit of measure?

Square

What is the unit to be used when doing masonry takeoff?

Square Feet

What unit would you use to do the takeoff of a glass & glazing system?

Square Feet

Concrete formwork quantities are estimated in:

Square Feet of Contact Area (SFCA)

What unit would you typically use to do the takeoff of a roofing system such as asphalt shingles or single-ply roofing?

Squares

What unit would you use to do the takeoff of a waterproofing membrane?

Squares

The Direct Construction Cost includes all Materials, Labor and Equipment costs associated with the project plus:

Subcontractors Costs + Allowances + Contingencies + General Conditions

Which document describes quality of work and the quality of the materials and the construction execution procedures?

Technical Specifications

What type of information should you first take into consideration and note in your estimate when taking off batt insulation?

Note the thickness, type of insulation, and facing required

Which document issued by the Architect illustrates what is to be built at the time of bid?

Plans

During the design process, in which order are the different drawing sets completed?

Programming/Conceptual - Schematic Design (SD) - Design Development (DD) - Construction Drawings (CD)

What does the "mils" unit refer to for a metal stud?

The minimum base metal thickness in one thousandth (0.001) of an inch

A Welded Wire Fabric (WWF) is called for on the drawings as WWF 8 x 8 - W6xW6

The wire mesh is made of longitudinal and transverse wires that are 8" o.c. (on center) and the wires have a cut section area that is 0.06 square inch

Which statement below regarding Work Packages is incorrect?

There is no definitive schedule associated with the work packages.

One of the typical scope gaps left out by subcontractors is the power supply/transformer that will energize the door's electrified hardware.

True

The "Art" of estimating is being able to account for the unknown, the unseen, and the unexpected.

True

The term masonry encompasses all the materials used by masons in a project, such as block, brick, clay, tile, or stone.The tremendous amount of varied material available requires that estimators be certain they are bidding exactly what is required.

True

A curtain wall system crew is composed of four glazers at $36/hour and a helper at $24.75/hour. The crew can install 158 SF of curtain wall in a day. What is the labor hour rate per SF of that crew to install the curtain wall system?

Total daily labor cost of the crew = ($36 x 4 + $24.75) x 8 hours = $1,350Daily output = 158 SF/dayLabor rate per SF = $1,350 divided by 158 SF = $8.54/SF

Contingency is typically used to cover the risks that occur during a CM at risk project.

True

Which type of bond (masonry installation) is the least expensive?

Running bond

Which type of estimate is most appropriate when the contract documents are 30% to 90% complete?

Semi-Detailed estimate

What is the level of accuracy of a detailed estimate?

2% to 4%

Calculate the total volume of concrete required for the piers in a foundation system.The piers are 14'-6" diameter, 15' deep, and we need 48 piers total.Provide answer in CY (cubic yard).

4,404

How many days would it take to install 25,000 SF of slab-on-grade concrete if a C14F crew (9 workers) can do 3,350 SF a day?

7.5 days

The cost of labor to install a roofing system depends on the type of roof selected (shingles, built-up, single-ply, metal, etc...) and also on:

All these answers are correct

You can find the Masonry specifications under the CSI MasterFormat Division #:

Division 4

Which type of insurance covers workers being laid off from their job?

Unemployment

Rebars quantities are estimated in:

Weight (100-pounds or ton) or Length (feet or 100-feet)

What is the soil state called if it is in its natural, or in place, or in situ, or undisturbed, state?

Bank

Which estimate will give you the most level of details and be the most accurate?

Detailed Estimate

What contribute to the cost of CSI MasterFormat Section 09 30 00 Tiling?

Dimensions of the tile (face size and thickness) Mortar type and Grout type Manufacturing and supplier locations

You can find Electrical specifications under which division in the CSI MasterFormat?

Division 26

Under which division(s) of the CSI MasterFormat can you find specifications related to Concrete scope of work?

Division 3

The 4 steps to an estimate are (fill-in the blank): Step 1: Break the project into manageable components Step 2: Assign a cost to each component, including: [a] + [b] + [c] Step 3: Summarize the component = DCC = Direct Construction Costs Step 4: Add all "[d] Construction Costs"

a. Labor b. Material c. Equipment d. Indirect

The swell/shrink (expansion) factor of a soil indicated in a soil geotechnical investigation report (as a result of a Laboratory Swell test) is the same thing as the swell factor used by earthwork contractors to estimate LCY of soils to be exported.

False

Waterproofing and dampproofing are the same thing. They are both designed to resist the passage of water and to resist the hydrostatic pressures to which a wall or floor might be subjected.

False

How does a construction company typically structure its accounting cost codes?

Typically organized following the CSI MasterFormat divisions, with some adaptations by companies.

Which of the following would not be included in a division 6 scope of work?

Wood Doors

Which type of insurance covers injuries to construction site workers employed at the job site?

Worker's Compensation

The estimated cost of a project if built today is $4,000,000 and the costs are expected to rise 3.5 percent each year for the next 5 years. What will be the estimated cost if the project is built five years from now?

$4,750,745

Using the Historic Cost Indices listed in table below, how much would a bank that costs $1,500,000 in Provo, in 2012 cost if built in 2016 in Purdue?

(1,500,000 * 46.2) / 37.4 = $1,852,941

he plans call for the contractor to install 15,000 SFCA of concrete formwork. The crew makeup includes: - (1) Carpenter Foremen @ $35.55/hour - (2) Carpenters @ $33.55/hour - (2) Carpenters Helpers @ $25.35/hour - (1) Laborer @ $23.56/hour Given the crew makeup above, and a crew Daily Output of 370 SFCA, what is the productivity rate expressed in work hours per unit?

0.130

To account for rebar splicing and overlap, you should add ____ % more weight than your calculated rebar weight.

10%

Using the square foot costs from the table below, how much would a 124,000 sqft college dormitory cost?

124,000 sqft * $139.81 = $17,336,440

A building pad needs to be over-excavated to remove existing clay that could compromise the slab-on-grade and footings.The existing grade is at 2,000 feet. The building F.F.E. will be at 2,002.50 feet. The top of footing elevation is shown to be 24" below F.F.E. The footing depth is 18".The soil engineer recommended removing 24" below bottom of footings due to the existing clay.How deep will you need to over-excavate under the footings?

3'-0"

A building pad excavation is calculated as needing to excavate 37,500 Cubic Feet of clay type soil. The swell factor for that soil is estimated by the Geotechnical Engineer at 17%. How many Cubic Yard of soil will need to be exported by the Earthwork contractor?

37,500 Cubic Feet = 1,389 Cubic Yard multiply by 1.17 (17% swell factor) = 1,625 Cubic Yard

A masonry wall is 16'-8" long and 22'-0" high. It is made of 8" x 8" x 16" CMU blocks.How many blocks do you need to build it, accounting for 5% waste?

435

The plans call for the contractor to install 15,000 SFCA of concrete formwork. The crew makeup includes: - (1) Carpenter Foremen @ $35.55/hour - (2) Carpenters @ $33.55/hour - (2) Carpenters Helpers @ $25.35/hour - (1) Laborer @ $23.56/hour Given the crew makeup shown above, an 8-hour workday, how many total work hours are expended per day?

48

How many different CSI MasterFormat divisions exit?

50

A building pad excavation is calculated as needing to fill in 45,000 CCY of engineered type soil. The shrinkage factor for that soil is estimated by the Geotechnical Engineer at 25%. How many Cubic Yard of soil will need to be imported by the Earthwork contractor?

60,000

A metal roof on a floor plan is showing to be 35'- 6" x 23'- 3".The slope of the roof is 5:12.Calculate the actual area of metal roof needed. Provide your answer in Squares

8.94

A masonry wall is 16'-8" long and 22'-0" high. It is made of 8" x 8" x 16" CMU blocks.It needs to be solid grouted for fire resistance. You need 0.56 CF of grout per block. How many cubic yards do you need to build it, accounting for 5% waste?

9

What is a Work Breakdown Structure (WBS)?

A list of tasks braking down the project into manageable work packages

What specifications related to doors, frames & hardware would have a cost impact on the overall cost of a door opening assembly?

ADA requirements Fire rating of the opening (20 min. / 40 min. / 1 hr. / etc.) Life safety components (panic bar, door handing type, etc.)

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

What is the soil state called after the soil is put in place at its final location and final compaction ratio?

Compacted

Other than the concrete strength expressed in PSI (i.e. 3,000 psi), which concrete specifications could add cost to the price of concrete (typically expressed in $/CY)?Multiple answers are possible.

Concrete finish (stamped, trowel, broom, etc...) Designed placement Aggregate type Cement type Fiber Concrete color additives Quantity needed (small bath versus large batch) Curing Delivery mileage (distance from plant to jobsite) Add mixture composition (air entrainment, accelerator, fly ash, etc...)

You're doing the takeoff of a 2-story 120' x 60' building. The foundations are comprised of: Continuous spread footing around the perimeter of the building. Dimensions: 4'-6" wide x 2'-4" high Isolated footings. Dimensions: 7'-6" square x 26" highIsolated footings are located within the building footprint on a 20' o.c. grid both directions, but not along the gridlines where the continuous footing is located. What is the total volume of concrete required for the foundation system, expressed in CY (Cubic Yard)?

Continuous footing: 4.5' x 2.33' x (120' + 60' + 120' + 60') = 3,774.6 CF divided by 27 = 139.8 CY = 140 CY Isolated footing: (7.5' x 7.5' x 2.17') x 10 footings = 1,220.6 CF divided by 27 = 45.21 = 46 CY10 footings as we only have isolated footings on the inside gridlines. Total = 186 CY

The soil conditions indicated in a Geotechnical Report will help us price the following potential added cost to earthwork scope:

Hard-rock digging, de-watering and over-excavation

In terms of cost estimating, why is the height of the walls important to take into consideration?

To know how far up the masonry block needs to be carried before being installed in place To be able to estimate the cost of the scaffolding Because of safety concerns

Under which conditions would you want to use epoxy coated rebar and welded wire fabric?

To prevent corrosion of the rebar/WWF

Structural Steel is typically taken off by which unit of measure?

Ton

If a Geotechnical Report indicates a Swell % over 1.5% at a boring location, you need to think that you may be dealing with expandable clay type soil and that over-excavation of the site will most likely be required in order to have a suitable building pad for footings and slab-on-grad.

True

In addition to the door itself, there are six basic components of a door opening.Can you list them all, in the order they are typically installed at the jobsite? The first one needs to be installed first. It is a [a] The second one is used to attach the door to the first one. It is a [b] device (starts with a "h") The third one allows the door to open and close. It is a [c] device (starts with a "s") The fourth one allows the door to lock/unlock. It is a [d] device (starts with a "c") The fifth one is installed to seal the door. It is a [e] The sixth one is installed to make the door last longer. it is the [f]

frame hanging device Securing Device Controlling Device Protection trim

List 3 main factors that could affect the productivity rate of a crew on a jobsite.

worker availability, expertise, training, weather