Structural Concrete Design and Lab

Course Description

Structural Concrete Design and Lab introduces the analysis and design of reinforced concrete building structures. Students explore the concepts, materials, and code practices routinely used in the design of reinforced concrete members and structural systems, and the course addresses how building members behave as it relates to their design.

Within the SCNS taxonomy, ETC is the Engineering Technology (Civil) prefix and the C suffix marks a combined lecture-and-laboratory course. Daytona State publishes it at 3 credits, offered spring, with ETG3533 and its laboratory as prerequisites, giving approximately 60 contact hours at the prefix's C-form convention.

Reinforced concrete is a composite that works because of a coincidence and a design decision. The coincidence is that steel and concrete expand at almost the same rate with temperature, so they can be bonded permanently. The design decision is that concrete is assumed to carry no tension at all — it cracks, and the steel is placed exactly where the tension will be. Understanding where tension occurs in a member is therefore the whole of reinforced concrete design, and misplacing reinforcement is not a detail but a structural failure waiting to happen.

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

Learning Outcomes

Required Outcomes

• Describe the composite behaviour of reinforced concrete.
• Describe the properties of concrete relevant to structural design.
• Describe reinforcing steel grades, sizes, and properties.
• Describe the assumptions underlying reinforced concrete design.
• Describe strength design and load and resistance factors.
• Determine factored design loads from code requirements.
• Analyse a reinforced concrete beam in flexure.
• Design a singly reinforced beam for a given moment.
• Describe balanced, under-reinforced, and over-reinforced sections.
• Explain why under-reinforced design is required and what it achieves.
• Design a doubly reinforced beam where required.
• Design T-beams and describe effective flange width.
• Analyse and design for shear and design stirrups.
• Describe diagonal tension and how shear reinforcement resists it.
• Design for development length, splices, and anchorage.
• Describe bond and its role in composite action.
• Analyse and design short columns under axial load and moment.
• Describe slenderness effects in columns.
• Design one-way slabs.
• Describe two-way slab systems in outline.
• Check serviceability, including deflection and crack control.
• Apply cover and detailing requirements.
• Prepare reinforcement detailing and placing drawings.
• Apply code provisions correctly and cite them.

Optional Outcomes

• Describe prestressed and post-tensioned concrete.
• Describe footing and foundation design.
• Describe retaining wall design.
• Describe seismic detailing principles.
• Use structural analysis and design software.
• Describe existing structure assessment and repair.

Major Topics

Required Topics

• Composite behaviour of reinforced concrete
• Concrete properties for design
• Reinforcing steel properties
• Design assumptions
• Strength design and load factors
• Factored design loads
• Beam flexural analysis
• Singly reinforced beam design
• Balanced, under- and over-reinforced sections
• Ductility in design
• Doubly reinforced beams
• T-beams and effective flange width
• Shear design and stirrups
• Diagonal tension
• Development length, splices, and anchorage
• Bond
• Short column design
• Slenderness effects
• One-way slab design
• Two-way slab systems
• Serviceability, deflection, and crack control
• Cover and detailing
• Reinforcement detailing drawings
• Applying and citing code provisions

Optional Topics

• Prestressed and post-tensioned concrete
• Footing and foundation design
• Retaining walls
• Seismic detailing
• Structural software
• Assessment and repair of existing structures

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.

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

⚠⚠ Under-reinforced design is deliberate — it is what makes failure survivable

• Reinforced concrete beams are designed so that the steel yields before the concrete crushes, and that is not an accident of the arithmetic. It is the single most important safety principle in the subject.
• Steel yielding is ductile. The member deflects visibly, cracks widen, and the failure announces itself over time — giving occupants warning and a chance to evacuate.
• ⚠ Concrete crushing is brittle and sudden. An over-reinforced section fails without warning, at full load, in an instant. It is stronger on paper and far more dangerous in reality, which is exactly why codes limit reinforcement ratios to prevent it.
• This is a general principle in structural engineering — ductile failure modes are preferred over brittle ones even at the cost of capacity, because warning is worth more than strength.
• Shear failure is also brittle, which is why shear design is conservative and why stirrups matter so much.
• Detailing delivers the design. Correct bar placement, development length, splice location, and cover are what make the calculation true — and a perfectly calculated beam with reinforcement in the wrong place is not a beam that works.
• Bars in the wrong face is the classic and catastrophic error. Reinforcement belongs where the tension is, which in a cantilever is the top and in a simple span is the bottom — and getting it backwards has collapsed structures.
• Check that what you designed can actually be built — congested reinforcement that concrete cannot flow around produces voids exactly where strength is needed.

⚠⚠ 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.

ETC4415C is 3 credits and approximately 60 contact hours, offered spring at Daytona State, with ETG3533 and its laboratory as prerequisites.

See this repository's ETC4414C (Applied Structural Design 1) guide for the preceding structural course.