Construction Estimating

Course Description

Construction Estimating covers techniques of making estimates and computations of materials, labour, equipment, overhead costs and profits. Students utilise software packages during the course.

Within the SCNS taxonomy, ETC is the Engineering Technology (Civil) prefix. Daytona State publishes this at 3 credits, offered spring, with ETC4241 and MAC1114 as prerequisites, giving approximately 45 contact hours at the prefix's unsuffixed convention.

⚠ Daytona State states that this course is offered every two years. That is unusual and it has real consequences for degree planning — missing an offering can delay graduation by two years rather than one term. Confirm the schedule with an advisor and plan the prerequisite chain around it.

Estimating is where construction projects are won and lost, and the asymmetry is brutal: an estimate that is too high loses the bid; one that is too low wins it and then loses money on every day of the job. That is why estimators are valued, well paid, and persistently in short supply.

Daytona State does not publish a lecture and laboratory split for its ETC courses. The prefix's unsuffixed courses run at 15 contact hours per credit — ETC1250 at 3 credits and 45 hours, ETC2207 at 2 credits and 30 hours — while its C-suffixed courses run at 20 (ETC2207C, ETC2521C and ETC4414C are all 3 credits and 60 hours). This course is unsuffixed and is priced at the unsuffixed convention.

Learning Outcomes

Required Outcomes

• Describe the estimating process and its stages.
• Distinguish conceptual, preliminary, and detailed estimates and their uses.
• Read and interpret construction drawings and specifications for estimating.
• Perform quantity take-off systematically and completely.
• Organise a take-off so that it can be checked by someone else.
• Compute material quantities including waste allowances.
• Price materials using current cost data and quotations.
• Estimate labour hours using productivity data.
• Apply crew composition and labour rates.
• Describe the factors affecting labour productivity.
• Estimate equipment costs, including ownership and operating costs.
• Describe equipment selection and its cost consequences.
• Estimate subcontractor costs and scope.
• Identify and allocate overhead, both job and general.
• Apply profit and contingency appropriately.
• Assemble a complete estimate from its components.
• Check an estimate for completeness and error.
• Describe bid preparation and submission.
• Describe unit price, lump sum, and cost-plus arrangements.
• Use estimating software to prepare an estimate.
• Describe cost data sources and their limitations.
• Describe value engineering and cost reduction.
• Describe the relationship between the estimate and project cost control.
• Describe risk in estimating and how it is managed.

Optional Outcomes

• Describe conceptual estimating techniques.
• Describe life cycle costing.
• Describe change orders and their pricing.
• Describe claims and their cost basis.
• Describe building information modelling in quantity extraction.
• Describe professional certification in estimating.

Major Topics

Required Topics

• The estimating process
• Estimate types and their uses
• Reading drawings and specifications for estimating
• Quantity take-off
• Organising a checkable take-off
• Material quantities and waste
• Material pricing
• Labour hour estimation
• Crew composition and rates
• Labour productivity factors
• Equipment costs
• Equipment selection
• Subcontractor costs and scope
• Job and general overhead
• Profit and contingency
• Assembling the estimate
• Checking for error
• Bid preparation and submission
• Unit price, lump sum, and cost-plus
• Estimating software
• Cost data sources and limitations
• Value engineering
• Estimate and cost control
• Risk in estimating

Optional Topics

• Conceptual estimating
• Life cycle costing
• Change order pricing
• Claims
• BIM quantity extraction
• Professional certification in estimating

Resources & Tools

• Florida Building Code (floridabuilding.org) — free; the adopted code, its amendments, and the product approval system. The authority for anything in this guide about Florida requirements.
• ASCE 7 — Minimum Design Loads — the load standard the building code references; the wind provisions are what govern Florida design.
• ACI 318 — Building Code Requirements for Structural Concrete — the concrete design standard.
• American Concrete Institute (concrete.org) and American Institute of Steel Construction (aisc.org) — standards, design aids, and student resources.
• ASTM standards for construction materials and their testing — check library access before purchasing.
• Florida DBPR — Construction Industry Licensing Board (myfloridalicense.com) — free; contractor licensing categories and requirements.
• OSHA construction standards (osha.gov) — free; subpart P on excavation is the one to read first, and it is short.
• Estimating software and published cost data — ask what the programme uses and learn it properly; it is directly employable.
• Visit sites. Nothing in construction is understood as well from a drawing as from watching it built.
• ASPE — American Society of Professional Estimators (aspenational.org) and AACE International — professional bodies with recognised certifications; estimating credentials are directly marketable.
• Published cost data — RSMeans and equivalents; learn what the numbers include and, more importantly, what they exclude.

Career Pathways

• Civil engineering technologist or technician — SOC 17-3022.
• Cost estimator — SOC 13-1051; a well-paid speciality and persistently short of people.
• Construction manager — SOC 11-9021.
• Construction inspector and building inspector — SOC 47-4011; a common destination with its own certification pathway.
• Materials testing and quality control technician — concrete, soils, and asphalt testing, with recognised certifications.
• Structural design support and detailing.
• Surveying and site engineering support.
• Public works and transportation agencies — county, municipal, and state; stable employment with benefits.
• Land development and site design support — a large Florida sector given sustained construction activity.
• Storm damage assessment and resilience work — a distinctively Florida speciality.
• Contracting — ⚠ a state-licensed activity under Chapter 489, Florida Statutes, requiring documented experience.
• Continue to a bachelor's or master's — ⚠ see the note on engineering technology and professional licensure.

Special Information

⚠⚠ An estimating error is discovered after you are contractually committed

• This is what makes estimating different from other calculations in construction. A structural error is caught in review; an estimating error is caught when the job is halfway through and the money has run out.
• Omissions are more dangerous than arithmetic errors. A quantity computed wrongly is usually caught by a sanity check; a scope item nobody priced at all is invisible until it must be built.
• Use a systematic take-off and a checklist, work in a consistent order, and never rely on memory for what has been included.
• Organise the take-off so somebody else can check it. Clear references to drawing and location, and workings that can be followed — an estimate only you can verify is an estimate nobody has verified.
• Read the specification, not just the drawings. The specification governs quality and method, and it routinely contains cost drivers the drawings do not show.
• Read the whole contract — liquidated damages, retainage, insurance and bonding requirements, and who bears which risks all belong in the number.
• Document your assumptions and qualify the bid. Every estimate rests on assumptions; writing them down converts a dispute into a conversation.
• ⚠ Beware the winner's curse. The lowest bid frequently belongs to whoever made the largest mistake, and winning a job you priced wrongly is worse than losing it.
• Compare the estimate against actual cost afterwards. That feedback loop is the only way an estimator improves, and organisations that skip it repeat their errors indefinitely.

⚠ Labour productivity is the assumption that decides the outcome

• Material quantities are objective; labour is a judgement, and it is where estimates most often go wrong.
• Published productivity data describes average conditions. Your conditions — site access, weather, crew skill, repetition, overtime — may be nothing like average.
• ⚠ Florida heat reduces productivity measurably, and summer work outdoors is genuinely slower. An estimate built on national average data will under-price it.
• Repetition improves productivity, so the tenth identical unit costs far less labour than the first — and a small job gets none of that benefit.
• Overtime reduces hourly productivity as well as raising the rate, so it costs more than twice.
• Congestion and trade stacking slow everyone down, and a compressed schedule is more expensive per unit of work.
• Keep your own historical data. What your crews actually achieved on past jobs beats any published figure.
• Sanity-check the total. Cost per square foot, or per unit, against comparable projects catches errors that line-by-line checking misses.

⚠⚠ Florida's building code is shaped by wind, and that changes the engineering

• The Florida Building Code imposes wind design requirements that are among the most demanding in the United States, and they follow directly from hurricane experience — Hurricane Andrew in particular drove a fundamental revision of how buildings are designed and inspected in this state.
• Wind load frequently governs rather than gravity load in Florida structures. Uplift is the characteristic problem: wind lifts roofs off buildings, and the entire load path from roof to foundation must be continuously tied together to resist it.
• The continuous load path is the central concept. Roof to wall, wall to floor, floor to foundation — a single missing connection in that chain defeats every other connection in it. Straps, hold-downs, and anchors exist for that reason and their omission is a serious defect.
• High-Velocity Hurricane Zones have their own requirements, and product approval is required for many components — windows, doors, roofing — before they may be used.
• Design wind speeds vary by location and by risk category, and they are determined from the code's maps rather than assumed.
• Flood requirements interact with wind requirements in coastal zones, and both interact with the National Flood Insurance Program's rules.
• ⚠ The code is amended and reissued on a cycle, and local jurisdictions may amend further. The edition adopted where the work is being built is what governs.
• ⚠ Rule 11 applies emphatically. Verify the current adopted edition and the applicable wind speed with the authority having jurisdiction — this is not something to take from a course guide.

⚠⚠ Engineering technology is not engineering for licensure purposes

• This distinction matters for anyone who may want to become a licensed Professional Engineer, and students frequently discover it too late.
• An engineering technology degree and an engineering degree are different qualifications, accredited under different criteria, and state licensing boards treat them differently.
• Requirements for PE licensure vary by state, and a technology degree may mean additional experience, a different pathway, or in some states no pathway at all.
• ⚠ If professional licensure is a goal, establish the pathway before you invest years in a programme — ask the Florida Board of Professional Engineers directly, and ask about any state you might move to.
• This is not a criticism of engineering technology. It is a distinct and valuable discipline oriented to application and implementation, and most graduates never need a PE licence — but the ones who do need to have planned for it.
• ABET accredits both, under different commissions; check which one a programme holds.
• ⚠ Rule 11 applies — licensure requirements change; verify with the board rather than relying on any course guide.

How Florida course levels affect transfer

The first digit of an SCNS number denotes the year of offering, not transferability. Courses at the 1000 and 2000 levels transfer transparently between Florida public institutions, and 3000 to 4000 is unproblematic since both are upper division. The boundary that actually matters is 2000 to 3000, where lower-division credit generally cannot satisfy an upper-division requirement — and it is live in these prefixes, where Daytona State offers both associate-level and bachelor of applied science coursework.

ETC4206 is 3 credits and approximately 45 contact hours, offered spring at Daytona State, with ETC4241 and MAC1114 as prerequisites.

⚠ Daytona State states this course is offered every two years — plan your degree around it and confirm the next offering with an advisor. See also this repository's ETC2207 and ETC2207C (Construction Planning and Estimating) guides.