Residential Electrical Service Panels — Power, Panels, and the Code

In this episode I cover everything a Class B general contractor needs to know about residential electrical service panels for the CSLB licensing examination. From the historical reason your home runs on alternating current to the specific code numbers that drive exam questions, I walk you through service sizing under both the California Electrical Code and Title 24 Energy Code, the function of every conductor entering the main panel, the physics of split-phase voltage, grounding electrode systems including the Ufer ground, meter placement clearances, working space requirements, permit rules, and the authority hierarchy governing this work in California.

Key concepts covered include the 100-amp historical CEC minimum and the 200-amp modern standard driven by California Energy Code Title 24, why the two hot legs are 180 degrees out of phase, why neutral and ground bond only at the main panel and never at a subpanel, the three grounding electrode methods under CEC Article 250.52, the 3-foot clearance requirement from doors and gas meter vents, the 10-foot maximum distance from the front corner of the residence, working space dimensions at the panel, and how the Authority Having Jurisdiction governs code compliance and alternate methods.

I built an audio practice quiz specifically for this episode — twelve questions read aloud so you can answer by tapping while driving to a job site. Find the link in the description below. Tap the link that says PassTheCSLB and it will take you directly to the quiz.

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Introduction and Disclaimer
1:18 A Hundred and Forty Years of Electrical History
3:42 The Journey of Power: Pole to Panel
5:40 Split-Phase: The Physics Behind 120 and 240 Volts
8:38 The Four Wires and What Each One Does
12:05 Service Sizing: From 100 Amps to California's New Mandate
15:20 The Grounding Electrode System and the Ufer Ground Story
18:29 Meter Placement and Panel Working Space
20:46 Permits, Authority, and the AHJ
23:35 Memory Anchors and Key Numbers

California B License Exam - Residential Electrical Service Panels | Study Guide

Electrical Calculations for the California General B Contractor Exam

I built this episode specifically for General B candidates who need to master electrical calculations before walking into the PSI testing center. In this episode I cover every calculation type that official CSLB preparation resources consistently identify as testable material — from the foundational Ohm's Law and Watt's Law triangles through continuous load sizing, voltage drop limits, kitchen circuit baselines, demand factors, and three-phase power. Because this exam is strictly closed-book with a calculator provided, I go beyond explaining the concepts and focus on locking the exact numbers, multipliers, and constants into memory.

Key concepts covered in this episode include: Ohm's Law and Watt's Law triangle method with original mnemonics, the 80 percent continuous load rule and 125 percent conductor sizing multiplier, mixed continuous and noncontinuous load calculations, the 3 percent branch circuit and 5 percent total system voltage drop limits, the 1,500 volt-ampere minimum for kitchen small appliance circuits, demand factors with electric heat calculated at 100 percent, and the 1.732 three-phase power constant. I also cover the history of these electrical units — the real stories behind Volta, Ampere, Ohm, and Watt — because knowing the why is what makes the numbers stick.

There is an audio practice quiz linked in the description specifically for this episode. The quiz is designed for people studying on the go — questions are read aloud and you answer by tapping. If you are driving to a job site, in between tasks, or have limited sitting-down study time, that quiz format was built for you. Find the PassTheCSLB link in the description below.

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Introduction and the History of Electrical Units
1:23 Ohm's Law and Watt's Law — The Two Triangles
8:22 The 80 Percent Rule and Continuous Loads
11:41 Mixed Loads — Continuous and Noncontinuous Together
14:13 Voltage Drop — The Distance Problem
17:48 The 1500 Volt-Ampere Kitchen Rule
20:04 Demand Factors and Service Sizing
21:47 Three-Phase Power and the 1.732 Factor
25:52 Closed-Book Survival — Eight Trigger Numbers

California B License Exam - Electrical Calculations | Complete Study Guide

Electrical Conductors: Wire Types, Sizing, and California Code

I built this episode to cover everything the General B exam draws from when it tests electrical conductors — and it tests this material under the Core Trades domain, which is thirty percent of your total score. In this episode I walk you through how to read wire gauge designations, why the A W G system runs backwards, how to identify every cable type by its construction and application, and the single most important California-specific amendment that overrides the base National Electrical Code on aluminum wiring.

Key concepts covered in this episode: American Wire Gauge sizing from 18 A W G through 4/0 A W G and into the k c m i l and M C M system, the letter-by-letter breakdown of T H H N and T H W N dash two wire, N M cable jacket color codes and ampacity ratings, the five-times bending radius rule, service entrance cable, the critical grounding difference between Type MC and Type A C cable, underground feeder cable construction, the continuous load eighty percent rule, and the California Electrical Code amendment to Article 310 restricting aluminum conductors to a minimum of 1/0 A W G. All material is referenced to the 2025 California Electrical Code derived from the 2023 NEC under Title 24, Part 3.

There is an audio practice quiz in the description specifically built for this episode. Twelve questions, read aloud, you tap your answer — designed for people studying on the go. Find the link in the description below marked PassTheCSLB and tap it to go straight to the quiz.

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Introduction and Disclaimer
1:16 Copper and Aluminum: The History Behind the Rules
4:59 The A W G Sizing System
8:14 T H H N and T H W N dash two Decoded
11:00 N M cable and Romex
14:54 Ampacity and Load Rules
17:12 Cable Types: SE, MC, AC, and UF
22:50 California Electrical Code Amendments
25:36 How to Think on the Exam
28:49 Call to Action

California B License Exam - Electrical Conductors | Complete Study Guide

Concrete Mixtures and Placement — CSLB General B Exam Prep

В этом эпизоде я разбираю одну из самых насыщенных числами тем экзамена General B — бетонные смеси и их пропорции, пять типов Portland cement, полную кривую твердения с ограничениями по нагрузке, методы укладки включая boom truck и правила вибрирования, расчёт объёма в кубических ярдах, minimum cover для арматуры, lap splice и контроль качества через slump test и цилиндры. Я объясняю каждое число с точки зрения инженерной логики — почему оно такое, откуда взялось, и как оно отражено в официальных учебных материалах CSLB. После этого эпизода ты сможешь уверенно отвечать на вопросы по любому из этих подразделов.

In this episode, I break down one of the most number-dense topics on the California General B contractor exam — concrete mix ratios, all five Portland cement types, the full curing timeline with load restrictions, placement methods including boom truck logistics and vibrator rules, cubic yard volume calculations, rebar minimum cover, lap splice requirements, and quality control through slump testing and cylinder acceptance. Every number is explained through engineering logic — not just memorized. After watching, you will be prepared to answer questions across all of these sub-topics as they appear in CSLB study materials.

Аудиовикторина по этому эпизоду уже готова — двенадцать вопросов в стиле PSI, читаются вслух, отвечаешь нажатием. Идеально для учёбы в дороге, на объекте или в обеденный перерыв. Ссылку найдёшь в описании под видео — PassTheCSLB.

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Введение / Introduction
1:05 Состав бетона / Concrete Mix Ratios
4:06 Виды цемента / Portland Cement Types
8:23 Сроки твердения и PSI / Curing Timeline & Minimum PSI
11:23 Методы укладки / Placement Methods
14:07 Расчёт объёма / Volume Calculations
15:51 Арматура и контроль качества / Rebar Cover & Quality Control
19:41 Ключевые числа / Key Numbers to Memorize

Бетонные Смеси и Укладка | Concrete Mixtures & Placement | CSLB B

Concrete Finishing, Joints, Slump Test & Site Preparation — California Class B Exam

В этом эпизоде я разбираю полный цикл бетонных работ для экзамена California General Building, Class B. Ты узнаешь точную последовательность операций отделки бетонной поверхности — от screeding до broom finishing, три типа швов с формулами расчёта глубины и расстояния, полный протокол slump test по ASTM C143, правила curing и все критические числа, которые нужно знать наизусть. После этого эпизода ты будешь уверенно ориентироваться в этих темах и отвечать на вопросы по Core Trades — Domain Three.

This episode covers the full concrete work cycle for the California General Building Class B exam. Topics include the exact sequence of concrete surface finishing operations from screeding to broom finishing, all three joint types with depth and spacing formulas, the complete slump test protocol per ASTM C143, curing methods and temperature thresholds, and all critical numbers required for the exam. After watching, you will be fully prepared to answer Core Trades Domain Three questions on concrete and site preparation.

К этому эпизоду есть аудиовикторина — вопросы зачитываются вслух, отвечаешь нажатием на экран. Это идеально для тех, кто учится в дороге, на обеде или прямо на объекте. Ссылка — в описании под видео: PassTheCSLB.

0:00 Введение / Introduction
1:15 Подготовка площадки / Site Preparation
5:53 Последовательность отделки / Finishing Sequence
10:34 Типы швов / Joint Types & Formulas
14:57 Испытание на осадку / Slump Test
19:03 Уход за бетоном / Curing
22:24 Ключевые числа / Key Numbers to Memorize

This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

| Concrete Finishing & Joints | CSLB B

В этом эпизоде я разбираю одну из самых насыщенных числами тем экзамена General B — бетонные смеси и их пропорции, пять типов Portland cement, полную кривую твердения с ограничениями по нагрузке, методы укладки включая boom truck и правила вибрирования, расчёт объёма в кубических ярдах, minimum cover для арматуры, lap splice и контроль качества через slump test и цилиндры. Я объясняю каждое число с точки зрения инженерной логики — почему оно такое, откуда взялось, и как оно отражено в официальных учебных материалах CSLB. После этого эпизода ты сможешь уверенно отвечать на вопросы по любому из этих подразделов.

In this episode, I break down one of the most number-dense topics on the California General B contractor exam — concrete mix ratios, all five Portland cement types, the full curing timeline with load restrictions, placement methods including boom truck logistics and vibrator rules, cubic yard volume calculations, rebar minimum cover, lap splice requirements, and quality control through slump testing and cylinder acceptance. Every number is explained through engineering logic — not just memorized. After watching, you will be prepared to answer questions across all of these sub-topics as they appear in CSLB study materials.

Аудиовикторина по этому эпизоду уже готова — двенадцать вопросов в стиле PSI, читаются вслух, отвечаешь нажатием. Идеально для учёбы в дороге, на объекте или в обеденный перерыв. Ссылку найдёшь в описании под видео — PassTheCSLB.

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Введение / Introduction
1:14 Состав бетона / Concrete Mix Ratios
4:42 Виды цемента / Portland Cement Types
9:24 Сроки твердения и PSI / Curing Timeline & Minimum PSI
12:39 Методы укладки / Placement Methods
15:40 Расчёт объёма / Volume Calculations
17:36 Арматура и контроль качества / Rebar Cover & Quality Control
22:05 Ключевые числа / Key Numbers to Memorize

| Concrete Mixtures & Placement | CSLB B

Stairs, Handrails and Guardrails — California Residential Code Requirements for the CSLB General B Exam

В этом эпизоде я разбираю лестницы, поручни и ограждения по California Residential Code — один из самых насыщенных числами разделов учебного плана CSLB. Я объясняю не просто что нужно запомнить, но и почему: откуда взялся допуск три восьмых дюйма, как детская антропометрия породила правило четырёх дюймов, и почему один неправильный подступёнок ломает автопилот человеческого тела. После этого эпизода у тебя будут все цифры, мнемоники для их запоминания, и полное понимание шести главных ловушек экзамена в этой теме.

In this episode I cover stairs, handrails, and guardrails under the California Residential Code — one of the most number-intensive sections of the CSLB study plan. I go beyond the numbers and explain the real engineering and safety origins behind each rule. You will leave with every required measurement, multiple memory aids, retrieval practice built into the audio, and a clear understanding of the six most common exam traps in this section.

Для этого эпизода я подготовил аудио-викторину — вопросы читаются вслух по-английски, ты отвечаешь нажатием кнопки. Никакого экрана. Идеально для учёбы в машине, на обеде или прямо на объекте. Ссылку найдёшь в описании — PassTheCSLB.

TIMESTAMPS:
0:00 Введение / Introduction
1:30 История CPSC / CPSC Story: Why These Numbers Exist
3:30 Ширина лестницы / Stairway Width
6:00 Подступёнки и проступи / Risers and Treads
11:00 Носики / Nosing Requirements
14:00 Просвет и площадки / Headroom and Landings
17:30 Поручни / Handrails
23:00 Ограждения / Guardrails
25:30 Правило трёх сфер / The Three Sphere Rules
30:00 Проверь себя / Self-Test Recall
33:30 Ловушки экзамена / Exam Traps
36:30 Аудио-викторина / Call to Action

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

Лестницы и Ограждения | Stairs, Handrails & Guardrails | CSLB B

Roofing Fundamentals for the California General B Contractor License Exam

In this episode I walk you through the complete roofing section of the California General B Contractor exam — not as a list of facts to memorize, but as a system of principles that make the numbers stick. Roofing falls under the core trades section of the General B exam, which accounts for thirty percent of the total assessment. I cover everything from roof type identification and California fire code restrictions to slope thresholds, materials, framing components, estimating math, flashing sequences, and the California-specific safety and legal numbers that catch experienced contractors off guard — including a direct comparison between California and federal standards that could cost you a correct answer if you do not know the difference.

Key content covered: gable, hip, mansard, gambrel, and Dutch hip identification; the Blackjack slope memory system covering one-quarter-to-twelve through twenty-one-to-twelve; California Building Code Chapter Seven-A and the Very High Fire Hazard Severity Zone wood shake prohibition; asphalt shingle fastening rules including the six-nail mansard requirement; single-ply membrane seam types for Thermoplastic Polyolefin, Ethylene Propylene Diene Monomer, and Polyvinyl Chloride; ridge board versus ridge beam; rafter ties versus collar ties; slope correction factors and waste percentages; drip edge sequencing at eaves versus rakes; the thirty-six-inch California valley underlayment requirement; chimney cricket trigger at thirty inches; California warning line placement at five feet; heat illness thresholds at eighty and ninety-five degrees; and the complete contractor law number set including the down payment cap, lien deadlines, and the workers' compensation rule specific to C-39 licensees.

There is an audio practice quiz built specifically for this episode — twelve questions, read aloud, answer by tapping. It is designed for people who are studying on the go, not sitting at a desk. Go to the description below this video and look for the link that says PassTheCSLB. Tap it and it will take you straight there.

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Introduction and Disclaimer
1:34 Roof Types and Identification
4:39 The California Fire Story
6:25 Slope and Pitch — The Blackjack Method
9:57 Roofing Materials
14:03 Roof Framing Components
17:18 Estimating by the Square
20:12 Flashing and Waterproofing
23:40 California Safety Rules
25:39 California Contractor Law
29:21 Recap and Close

California B License Exam - Roofing Fundamentals | Complete Study Guide

Stairs, Handrails, and Guardrails — California Residential Code R311 and R312

In this episode I walk you through every stair, handrail, and guardrail dimension you need to know for the CSLB General Building B license exam. This material covers California Residential Code Sections R311 and R312 — and it sits inside the Framing and Safety domains, which together make up thirty-five percent of your total exam score. If you have ever second-guessed yourself on riser height, nosing projections, the sphere rules, or the difference between a handrail height and a guardrail height, this episode clears all of it up.

Key concepts covered include: thirty-six-inch minimum stair width and the three different clear widths you need to know, maximum riser height of seven and three-quarter inches and minimum of four inches, the three-eighths-inch uniformity tolerance and why it catches experienced framers off guard, nosing projection range and the eleven-inch waiver, six-feet-eight-inch headroom and how to measure it correctly, the door swing exception for top landings, one-half-inch gypsum board under enclosed stairs, handrail height between thirty-four and thirty-eight inches, wall clearance of one and one-half inches, circular and noncircular grip dimensions, the forty-two-inch guardrail height for flat surfaces, and the three sphere rules — four inches, four and three-eighths inches, and six inches — each applied to a distinct location.

I have an audio practice quiz built for this specific episode. Questions are read aloud and you answer by tapping — designed for people studying on the go. Find the link in the description. It says PassTheCSLB.

TIMESTAMPS INSERTED BELOW

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Introduction and Legal Disclaimer
1:10 Why Stair Code Is Written in Fractions
3:00 Stairway Width — Three Numbers You Must Know
5:30 Maximum and Minimum Riser Height
7:45 The Uniformity Rule and the Field Trap
11:00 Tread Depth and the Eleven-Inch Nosing Threshold
13:20 Nosing Dimensions and the Half-Inch Edge Rule
15:30 Open Risers and the Four-Inch Sphere Preview
16:30 Headroom — The Number and the Method
18:30 Landings and the Door Swing Exception
20:45 Exterior Landing and Fire Protection Under Stairs
23:00 Handrail vs Guardrail — The Critical Distinction
25:00 When a Handrail Is Required and How High It Goes
27:30 Grip Dimensions — Circular and Noncircular
30:00 Guardrail Height — Forty-Two Inches and Why
32:30 Stair Guard Exception
33:45 The Three Sphere Rules
38:00 The Memory Sequence and the Four Anchor Numbers
40:30 Call to Action and Practice Quiz

California B License Exam - Stairs, Handrails & Guardrails | Study Guide

Notching, Drilling and Boring — Floor Joists, Wall Studs, Top Plates and Rafters

In this episode I cover the complete rules for cutting, notching, and boring structural wood framing members as covered in the California General B contractor license exam preparation curriculum. By the end of this episode you will be able to calculate the maximum allowable hole or notch for any framing member using actual lumber dimensions, instantly distinguish between bearing and non-bearing wall rules, and identify exactly when the top plate metal tie requirement is triggered. I also walk through the five most common errors candidates make on this material and give you the memory anchors to lock every number in place before exam day.

Key concepts covered in this episode: California Residential Code R502.8 and R502.8.1 governing floor joist holes and notches, the three fractions — D divided by three, D divided by six, and D divided by four — and when each applies, the critical distinction between holes and notches in the middle third of the span, nominal versus actual lumber dimensions and why the math difference matters, the engineered wood prohibition under R502.8.2 and R802.7.2, bearing wall stud rules under R602.6 including the twenty-five percent notch limit and the forty percent standard hole limit, non-bearing partition rules with the forty percent notch and sixty percent hole allowances, the top plate metal tie specification triggered at fifty percent of plate width under R602.6.1, and roof rafter rules under R802.7 and R802.7.1.

I built an audio practice quiz specifically for this episode. Every question is read aloud and you answer by tapping — designed for studying on a commute, on a job site, or on a lunch break when you do not have time to sit down with a notebook. The link is in the description below this video. It says PassTheCSLB. Tap it and it takes you straight to the quiz for this episode.

[TIMESTAMPS INSERTED HERE]

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Introduction and Legal Disclaimer
1:20 Why These Rules Exist — The Physics of Structural Load
5:45 Floor Joists: The Three Governing Fractions
9:10 Nominal vs Actual Lumber Dimensions — The Math Trap
11:15 Engineered Wood Products — The Exception That Overrides Everything
13:40 Bearing and Exterior Wall Studs — CRC R602.6
17:05 Non-Bearing Partition Walls — The Relaxed Rules
18:30 Top Plate Cutting — The Metal Tie Rule
20:15 Roof Rafters — Same Fractions Same Logic
21:30 Complete Reference Matrix — Every Number in One Place
22:45 Common Exam Traps — Where Candidates Lose Points
25:15 Memory Anchors — Lock Every Number In
26:45 Practice Quiz and Closing

California B License Exam - Notching, Drilling and Boring | Study Guide

Nails and Mechanical Fasteners — Penny Sizing, Coatings, Nail Types, and the Two-Thirds Rule

In this episode I walk you through everything official CSLB General B exam preparation materials identify as testable content on nails and mechanical fasteners. This is one of the most number-heavy sections in the entire exam prep curriculum — full of specific penny sizes, specific coating requirements, specific code-mandated spacing values, and specific nail type distinctions that you either know cold or you miss. I am going to make sure you know all of them, and more importantly, I am going to make sure you understand why each rule exists so that the numbers stick.

Key concepts covered: the complete penny sizing system and the mathematical formula behind it, the two-thirds base penetration rule with full worked math, low and medium and high carbon steel nail metallurgy, every coating type including the critical distinction between electro-galvanized and hot-dipped galvanized, the specific application requirements for blued nails in plaster work, cement-coated nail mechanics, and a complete breakdown of every nail category — common, box, finishing, roofing, drywall, masonry, corrugated, tacks, brads, and spikes. I also cover the code-specific numbers from official preparation materials: OSB shear wall nailing schedules, ceiling drywall fastener spacing, shingle minimums, and the deck ledger lag bolt requirement.

There is an audio practice quiz built specifically for this episode in the description below. It is designed for people studying on the go — questions are read aloud, you tap your answer, you keep moving. If you are driving to a job site right now, that quiz was made for you. Find the PassTheCSLB link in the description below.

0:00 Disclaimer and Introduction
1:40 The Penny Sizing System — History and the Formula
5:30 Brads and Spikes — The Dimensional Extremes
7:00 The Two-Thirds Penetration Rule — The Math and the Physics
11:00 Nail Materials — Carbon Steel Grades and Specialty Metals
14:30 Nail Coatings — Blued, Galvanized, and Cement-Coated
19:30 Nail Types — Every Category with Full Detail
26:00 Code-Specific Fastener Numbers
29:30 Screws vs Nails — The Categorical Exam Question
31:00 Call to Action

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

California B License Exam - Nails and Mechanical Fasteners | Complete Study Guide

Rooms, Walls, and Floors — Complete Exam Prep Guide for the California General B License

In this episode I walk you through everything the CSLB study guide covers under Rooms, Walls, and Floors — one of the most number-heavy and trap-heavy sections on the General B examination. If you have ever second-guessed yourself on dimensional minimums, nailing schedules, or pressure treated wood thresholds, this is the episode that locks all of it in.

I cover minimum ceiling heights and the bathroom exception that trips up most test takers, the room area and dimension rules and how kitchens operate under a completely different standard, panel wall sheathing and the overdriven nail remediation procedure, the floor joist and girder clearance thresholds that trigger pressure treated wood requirements, the fastener standards for treated lumber, joist bearing and lapping with specific nail counts, underfloor ventilation ratios and mesh sizing, Wildland-Urban Interface vent rules under California Building Code Chapter Seven A, subfloor panel orientation and the expansion gap rule, and the nailing schedule for plywood subflooring. Code references include California Residential Code Sections R305, R311, R317, R408, and R502, and California Building Code Chapter Twenty-Three.

There is an audio-based practice quiz linked in the description built specifically for this episode. The quiz reads questions aloud and you answer by tapping — designed for people studying in the truck, on a walk, or anywhere away from a desk. Look for the PassTheCSLB link in the description below.

0:00 Introduction and Disclaimer
1:30 Ceiling Heights — The Baseline and the Exception
6:30 Bathroom, Shower, and Sloped Ceiling Rules
11:00 Room Area, Minimum Dimensions, and Kitchen Rules
15:30 Panel Wall Sheathing — Nailing Schedules
20:30 Overdriven Nails — The Exact Remediation Procedure
25:00 Floor Joists, Girders, and Pressure Treated Wood
30:30 Fasteners in Treated Lumber — The Corrosion Trap
34:00 Joist Bearing, Lapping, and Blocking Rules
39:00 Underfloor Ventilation and WUI Fire Zone Rules
44:00 Subflooring — Orientation, Gaps, Nailing, and Edge Support
48:30 Master Numbers Review
51:00 Call to Action

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

California B License Exam - Rooms, Walls, and Floors | Complete Study Guide

Wall Framing — Sill Plates, Anchor Bolts, Studs, Top Plates, Headers, Cripple Walls, and Fire Blocking

In this episode I walk you through the complete wall framing section of the California General Building Class B exam — the single most heavily weighted technical topic on the test. Framing and structural components account for 20% of your exam score, meaning roughly 23 out of 115 questions pull from this material. I cover every number, every code threshold, and the structural reason each one exists — because understanding why a rule was written is the only reliable way to remember it under exam pressure.

Topics covered in full: sill plate thickness and width requirements under CBC 2308.3.1, anchor bolt spacing, embedment, and end distance, sill sealer material and its three code functions, stud sizing and spacing for one-story through three-story structures per the prescriptive framing tables, the 40% boring hole rule for load-bearing studs, double top plate requirements including the four-foot joint offset and eight-nail minimum at lap joints, headers and the critical distinction between the four-foot trimmer doubling threshold and the eight-foot header beam doubling threshold, cripple wall fourteen-inch story classification in Seismic Design Categories D and E, fire blocking ten-foot intervals and the complete list of approved materials, and the fastener prohibitions — clipped head nails and gypsum board — that apply specifically in California's high-seismic zones.

The audio practice quiz for this episode is linked in the description below. Questions are read aloud and you answer by tapping — built for people studying on the go. Look for the link that says PassTheCSLB and tap it to go straight there.

0:00 Introduction and Disclaimer
1:30 Why Wall Framing Dominates the Exam
2:30 Sill Plates — Foundation Connection Rules
4:40 Anchor Bolts — Four Critical Numbers
7:10 Sill Sealer — Material and Three Functions
9:00 Studs — Sizing, Spacing, and Story Rules
13:00 Boring Holes and the Forty Percent Rule
15:00 Top Plates — Double, Offset, and Nail Count
17:30 Headers — The Four Foot and Eight Foot Rules
20:50 Cripple Walls and Seismic Requirements
23:30 Fire Blocking — Intervals, Materials, and the Trap
25:30 Numbers Review
27:15 Audio Quiz and Call to Action

DISCLAIMER: This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

California B License Exam - Wall Framing | Sill Plates, Studs & Headers

Footings and Formwork — California CSLB General B Exam Prep

В этом эпизоде я разбираю formwork и footings — два раздела из официального учебного плана CSLB, которые входят в Core Trades и составляют тридцать процентов экзамена General B. Я прохожу конкретные числа из California Residential Code, California Building Code и Cal/OSHA Title Eight: минимальная глубина заложения, таблица размеров footing по типу грунта и этажности, расчётные нагрузки на shoring, требования к rebar caps, арматурное покрытие, и математика расчёта объёма бетона. После этого эпизода ты будешь знать каждое число, которое официальный учебный план включает в эту тему, и понимать, почему оно существует.

In this episode I break down formwork and footings — two of the highest-yield topics from the CSLB official curriculum, covering thirty percent of the General B exam under Core Trades. I go through specific numbers from the California Residential Code, California Building Code, and Cal/OSHA Title Eight: minimum footing depth, the footing size table by soil LBV and stories, shoring design loads, rebar cap impalement protection specs, minimum cover requirements, and concrete volume math. Every number has a reason — I explain both.

Я записал аудио-викторину к этому эпизоду. Вопросы зачитываются вслух — ты отвечаешь нажатием. Никакого чтения, никаких учебников. Идеально для тех, кто занимается в дороге, на стройке или в обеденный перерыв. Перейди в описание под этим видео — ты увидишь ссылку PassTheCSLB. Нажми на неё.

[TIMESTAMPS INSERTED HERE]

This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Дисклеймер и Введение / Disclaimer and Introduction
1:30 Что такое Formwork / What Is Formwork
2:20 Защита от Прокола / Rebar Cap Safety — Cal/OSHA 1712
4:30 Классы Опалубки / Class I vs Class II Formwork
5:20 История: Гибель Рабочих / Historical Story: Formwork Collapse
6:30 Нагрузки на Опалубку / Formwork Load Design — Cal/OSHA 1717
9:00 Что такое Footing / What Is a Footing
9:50 Несущая Способность Грунта / Soil Load-Bearing Values
12:10 Таблица Размеров Footing / Footing Size Table
14:20 Глубина и Подготовка / Footing Depth and Site Prep
16:30 Арматура в Footing / Rebar in Footings
18:40 Бетон: Смесь и Укладка / Concrete Mix and Placement
21:30 Математика: Объём Бетона / Concrete Volume Math
24:00 Ключевые Числа / Key Numbers by Group
26:30 Аудио-Викторина / Call to Action

Фундамент и Опалубка | Footings and Formwork | CSLB B

Concrete — Mix Design, Portland Cement Types, Placement, Curing, Safety, and Math

В этом эпизоде я разбираю всё о бетоне для экзамена CSLB General B. Четыре пропорции смесей, пять типов портландцемента, правила укладки, Cal/OSHA требования по boom pump и арматуре, этапы затвердевания и математика по кубическим ярдам — всё объясняю на русском языке с точными английскими терминами экзамена. После этого эпизода ты будешь знать не только что запомнить, но и почему — а это то, что помогает не запутаться под давлением экзамена.

In this episode I cover everything about concrete for the CSLB General B exam — mix ratios, Portland cement types, placement rules, Cal/OSHA requirements for boom pumps and rebar, curing timelines, and cubic yard volume math. Explained in Russian with precise English exam terminology throughout. After watching, you will understand both what to memorize and why each standard exists.

Я подготовил аудио-викторину к этому эпизоду. Вопросы читаются вслух, ты отвечаешь нажатием — идеально для учёбы в машине, на обеде, или прямо на объекте. Ссылка в описании — PassTheCSLB.

[TIMESTAMPS INSERTED HERE]

This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

0:00 Введение / Introduction & Disclaimer
1:00 Пропорции бетонных смесей / Concrete Mix Ratios
3:00 Water-Cement Ratio и дефекты поверхности / Surface Defects
5:30 Добавки / Admixtures
7:00 Типы портландцемента / Portland Cement Types
11:30 Правила укладки / Placement Rules
14:00 Безопасность Cal/OSHA / Safety Requirements
15:45 Затвердевание и прочность / Curing & Strength Milestones
18:30 Математика — кубические ярды / Volume Math
21:00 Ключевые числа и ловушки / Key Numbers & Traps
22:00 Завершение / Call to Action

Бетон: Всё для Экзамена | Concrete Complete | CSLB B

Earthwork, Excavation and Grading — Dig Alert, Soil Classification, Trench Safety, Grade Stakes, and Volume Math

В этом эпизоде я разбираю всё, что нужно знать о земляных работах для экзамена General B: правила уведомления Dig Alert по California Government Code раздел четыре-два-один-шесть, восемь цветовых кодов подземных коммуникаций, классификацию грунтов Type A, Type B и Type C по Cal/OSHA Title Eight, требования к безопасности при рытье траншей, чтение геодезических кольев, уплотнение грунта и математику объёмов с load factor. После этого эпизода у тебя будут все ключевые числа и формулировки, которые охватывает учебный план CSLB по этой теме.

In this episode I cover everything related to earthwork for the California General B exam: Dig Alert notification rules under Government Code 4216, all eight underground utility color codes, soil classification Types A through C under Cal/OSHA Title 8, trench safety numbers, grade stake reading, compaction requirements, and volume calculation math including load factor problems. Everything covered is drawn from official CSLB study curriculum for this section.

Я подготовил для тебя аудио-квиз специально по этому эпизоду. Вопросы читаются вслух, варианты ответа — тоже, отвечаешь нажатием. Идеально для тех, кто учится в движении: в машине по дороге на объект, в обеденный перерыв прямо на площадке, пока ждёшь инспектора. Ссылка в описании — PassTheCSLB.

0:00 Введение / Introduction and Disclaimer
1:10 Dig Alert — уведомление перед раскопками / Notification Requirements
4:00 Цветовые коды коммуникаций / Underground Utility Color Codes
5:45 Классификация грунтов / Soil Classification — Type A, B, C
9:30 Безопасность траншей / Trench Safety Rules
12:15 Геодезические колья / Grade Stake Reading
13:30 Уплотнение грунта / Compaction
14:20 Математика объёмов / Volume and Load Factor Math
16:30 Итоговые числа / Key Numbers Summary
17:45 Аудио-квиз / Call to Action

This content is produced by Pass The CSLB, an independent educational channel. Not legal, professional, or engineering advice. Based on publicly available CSLB study resources. Exam content is set by PSI and CSLB and may change — always verify with official CSLB materials. No exam outcome is guaranteed.

Земляные Работы и Раскопки | Earthwork & Excavation | CSLB B

Rebar and Concrete Slabs — California B License Exam Prep

В этом эпизоде я подробно разбираю одну из самых важных тем экзамена CSLB — арматуру и бетонные плиты. Я объясню, почему бетон без стали трескается под нагрузкой, как работает система нумерации rebar, что такое minimum cover и почему это число — два дюйма — нужно знать наизусть. Ты поймёшь, зачем используются chairs, как рассчитывается overlap, и какие требования предъявляет California building code к stem walls и concrete slabs. После этого эпизода ты не просто запомнишь правила — ты поймёшь, почему они именно такие.

In this episode I break down one of the most tested topics on the CSLB B exam — rebar and concrete slabs. I explain why concrete alone fails under tensile stress, how the rebar numbering system works, what minimum cover means and why two inches matters, how chairs and wire ties ensure proper placement, how to calculate overlap splice length, and what California code requires for stem walls, slab thickness, and garage door footings. This is bilingual content designed for Russian-speaking contractors preparing for the English-language PSI exam.

Специально к этому эпизоду я подготовил аудио-тест по всем темам, которые мы разбираем. Вопросы зачитываются вслух — идеально для учёбы в дороге, на объекте или в обеденный перерыв. Перейди в описание под этим видео, найди ссылку PassTheCSLB и нажми на неё.

0:00 Введение / Introduction
1:30 Два вида прочности / Compressive vs Tensile Strength
4:00 Почему Калифорния особенная / Earthquakes and Rebar
6:00 Система нумерации / Rebar Size Designations
8:30 Рифлёная арматура / Deformed Bars and Bond
10:30 Минимальное покрытие / Minimum Cover Rule
13:00 Сетка арматуры / Rebar Grid Spacing
15:30 Подставки / Chairs — The California Requirement
17:30 Стыковка арматуры / Overlap Splice Rule
20:00 Подпорные стены / Stem Wall Requirements
22:30 Бетонные плиты / Concrete Slab Requirements
25:00 Заземление в фундаменте / Concrete Encased Electrode
27:30 Итог и призыв к действию / Summary and Call to Action

Арматура и Бетонные Плиты | Rebar & Concrete Slabs | CSLB B

Finishing the Concrete: Screeding, Floating, Jointing, Troweling, Broom Finishing, and the Slump Test

In this episode I walk you through everything the CSLB B General exam expects you to know about finishing concrete — one of the most detail-heavy and frequently tested topics in the entire exam. This is not surface-level stuff. I go deep on every step of the finishing process, the exact code numbers you need to memorize, and most importantly the WHY behind every rule so the information actually sticks when you sit down to test.

I cover the complete concrete finishing sequence from start to finish: screeding, bull floating, edging, jointing, troweling, and broom finishing. I explain the joint spacing formula, the joint depth rule, the three types of joints, when to cut joints in hot weather, and the difference between control joints, isolation joints, and construction joints. I also break down the slump test in full — the Abrams cone, the three types of slump results, and what each result tells you about your concrete batch. Every number, every code requirement, and every rule is explained with the real-world context and history that makes it memorable.

Ready to test yourself on this material? There is an audio quiz linked directly in the description below this video. It is designed specifically for people studying on the go — questions read aloud, you answer by tapping. Pull it up on your commute, on a job site, or at the gym. The link says PassTheCSLB — tap it and you will go straight there.

0:00 Introduction
2:05 The Full Concrete Process — A Quick Review
4:35 Screeding — Flattening the Pour
7:10 Bull Floating — The First Smooth Pass
9:05 Edging — Protecting the Perimeter
11:00 Jointing — Planned Cracks That Prevent Real Ones
16:20 The Three Types of Joints Explained
19:15 Troweling — The Final Dense Surface
21:40 Broom Finishing — Traction Is Not Optional
23:35 The Slump Test — Quality Control in a Traffic Cone
29:50 Exam Tips and What to Watch For
31:30 Call to Action

All Study Episodes

🇺🇸 English — 10 episodes

Residential Electrical Service Panels — Power, Panels, and the Code

Electrical Calculations for the California General B Contractor Exam

Electrical Conductors: Wire Types, Sizing, and California Code

Roofing Fundamentals for the California General B Contractor License Exam

Stairs, Handrails, and Guardrails — California Residential Code R311 and R312

Notching, Drilling and Boring — Floor Joists, Wall Studs, Top Plates and Rafters

Nails and Mechanical Fasteners — Penny Sizing, Coatings, Nail Types, and the Two-Thirds Rule

Rooms, Walls, and Floors — Complete Exam Prep Guide for the California General B License

Wall Framing — Sill Plates, Anchor Bolts, Studs, Top Plates, Headers, Cripple Walls, and Fire Blocking

Finishing the Concrete: Screeding, Floating, Jointing, Troweling, Broom Finishing, and the Slump Test

🇷🇺 Russian — 8 episodes

Concrete Mixtures and Placement — CSLB General B Exam Prep

Concrete Finishing, Joints, Slump Test & Site Preparation — California Class B Exam

Concrete Mixtures and Placement — CSLB General B Exam Prep

Stairs, Handrails and Guardrails — California Residential Code Requirements for the CSLB General B Exam

Footings and Formwork — California CSLB General B Exam Prep

Concrete — Mix Design, Portland Cement Types, Placement, Curing, Safety, and Math

Earthwork, Excavation and Grading — Dig Alert, Soil Classification, Trench Safety, Grade Stakes, and Volume Math

Rebar and Concrete Slabs — California B License Exam Prep