This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- The resultant hydrostatic force on a submerged plane is calculated using the pressure at the area's centroid.

- The center of pressure, where the resultant force acts, is always located at a point deeper than the centroid of the area.

- How to distinguish between vertical depth (h_c) and inclined distance (y_c) to the centroid, a common source of error on the exam.

- For curved surfaces, forces must be resolved into separate horizontal and vertical components for analysis.

- The vertical force component on a submerged curved surface is equal to the weight of the fluid column directly above it.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- The critical difference between mass density (ρ) and specific weight (γ) is the inclusion of gravity (g), a common exam tripwire.

- Specific gravity (SG) is a unitless ratio comparing a substance's density to that of water, simplifying calculations with water's known constants (62.4 lb/ft³ or 9,810 N/m³).

- Differentiating between dynamic viscosity (μ) and kinematic viscosity (ν) is crucial; always check the units given in the problem (e.g., Pa·s vs. m²/s) to select the correct formula.

- Exam problems test viscosity primarily through Reynolds number calculations, where using the wrong viscosity leads to an incorrect flow regime classification.

- The Bulk Modulus (K) quantifies a fluid's compressibility; a high K value, like water's, signifies that it can be treated as incompressible for most FE exam problems.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- The key ASTM steel grades and their yield strengths: A36 (36 ksi), A992 (50 ksi), and Grade 60 rebar (60 ksi).

- That the modulus of elasticity (E) for all structural steels is a constant 29,000 ksi, regardless of yield strength.

- How to avoid the common exam trap confusing a steel's strength with its stiffness.

- The purpose of different heat treatment processes: Annealing (softens), Quenching (hardens), and Tempering (toughens).

- To recognize Brinell, Rockwell, and Vickers as the names of standard material hardness tests.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- The specified compressive strength, f'c, is the 28-day strength used to calculate the modulus of elasticity, Ec.

- The NCEES FE Reference Handbook formula for Modulus of Elasticity is Ec = 57,000√f'c, where f'c must be in psi.

- The water-cement (w/c) ratio is the most critical factor controlling concrete strength; a lower ratio results in higher strength.

- Concrete is strong in compression but weak in tension, which is why steel reinforcement is essential to handle tensile forces.

- A common exam trap is a unit mismatch, such as using ksi instead of psi for f'c in the modulus of elasticity formula.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- How to identify the five key regions of a stress-strain curve: elastic, yielding, strain hardening, necking, and fracture.

- The specific definitions of yield strength and ultimate tensile strength and how to locate them on the diagram.

- The visual difference between ductile materials (like steel) and brittle materials (like cast iron) on a stress-strain curve.

- Common FE exam questions, such as calculating the Modulus of Elasticity from the linear portion of the curve.

- A mnemonic to easily remember the sequence of events on the curve: Every Young Student Understands Failure.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- How to correctly plot the initial stress state on Mohr's Circle using the NCEES sign convention for shear stress.

- The formulas for calculating the circle's center (average normal stress) and its radius (maximum in-plane shear stress).

- How to determine the principal stresses, which are the maximum and minimum normal stresses, directly from the circle's geometry.

- The application of the superposition principle for combined loading problems to find the initial stresses needed for Mohr's Circle.

- The critical relationship that a rotation of theta on a stress element corresponds to a rotation of 2-theta on Mohr's Circle.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- The NCEES sign convention: Positive shear is down on the right face of a cut, and positive moment causes a beam to sag like a smile.

- The graphical relationship where the slope of the shear diagram equals the negative of the distributed load intensity (dV/dx = -w).

- The critical shear-moment relationship: The slope of the moment diagram equals the shear force value (dM/dx = V).

- How to find maximum moment: The maximum bending moment always occurs at the point where the shear force diagram crosses zero.

- The concentrated moment trap: A clockwise applied moment causes an immediate upward jump in the moment diagram, a common point of confusion.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- The flexure formula, σ = Mc/I, is used to find the maximum bending stress at the outermost fiber of a beam's cross-section.

- Section modulus (S = I/c) simplifies the stress calculation to σ = M/S and represents a beam's geometric efficiency in resisting bending.

- A critical exam trap is failing to convert the bending moment (M) from kip-feet to kip-inches before calculating stress in kips per square inch (ksi).

- For beam design problems, calculate the required section modulus (S_req = M/σ_allow) and then select the lightest W-shape from the NCEES Handbook tables that meets or exceeds this value.

- The distance 'c' in the flexure formula is always the distance from the neutral axis to the extreme fiber, which is half the total depth for symmetric cross-sections.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- How to calculate maximum shear stress in a shaft and avoid the common radius versus diameter trap.

- The correct application of the polar moment of inertia (J) for both solid and hollow circular shafts.

- How to find the angle of twist and the critical final step of converting radians to degrees.

- The essential unit conversion from RPM to radians per second required for all power transmission problems.

- A simple mnemonic, "The Lazy Jay Goose," to easily recall the angle of twist formula, φ = TL/JG.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams.

In this episode you will learn:

- Understand that thermal strain (ε = αΔT) occurs with any temperature change, but thermal stress (σ = EαΔT) only develops if the object is constrained.

- Recognize that a temperature increase in a constrained member results in compressive stress, while a temperature decrease results in tensile stress.

- Be prepared to look up the Modulus of Elasticity (E) and the coefficient of thermal expansion (α) in the NCEES FE Reference Handbook.

- Watch out for distractor information in exam problems, such as the initial length of a member when only stress is required.

- Remember the key phrase: "No constraint, no stress" to avoid the common trap of calculating stress for a freely expanding object.

For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep