Exam Cheat Sheet · Quick Reference
Oklahoma Plumbing Business and Law
Oklahoma · PSI Services Contractor
Oklahoma State Portion 50 questions
Key Distinctions
Company overhead is the cost of doing business that cannot be directly linked to a specific project (office rent, accounting fees, taxes, telephone, legal fees, administrative labor), while project overhead is job-related (bonds, temporary storage, temporary office, security, utilities, dumpsters, portable toilets, plus indirect items like small tools and pickup trucks) and typically runs 5–10 percent of the total bid.
NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Add Company Overhead section (Page 6-6)Bid peddling is the subcontractor approaching the general contractor after award intending to lower the price submitted on bid day, whereas bid shopping is the general contractor seeking lower bids from other subcontractors.
NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Bid Peddling section (Page 6-2)Bid rigging is collusion in which contractors coordinate their bids to fix the award outcome (forbidden by some state statutes on public projects), while bid peddling involves one subcontractor undercutting its own bid after the award.
NASCLA Contractors Guide (14th ed.), Bidding and Estimating chapter — Bid Rigging section (Page 6-2)In arbitration a third-party arbitrator acts as a judge and renders an arbitral award that legally binds all parties (nearly all states adopted the federal Uniform Arbitration Act), while a mediator only facilitates dialogue and the parties set the terms with no binding decision.
NASCLA Contractors Guide (14th ed.), Chapter 7 — ArbitrationNamed peril policies have narrower coverage and list only the perils covered (e.g., fire and lightning), while all-risk policies cover all perils not specifically excluded by the policy.
NASCLA Contractors Guide (14th ed.), Chapter 3 – Named Peril Builder's Risk Insurance sectionA bank letter of credit is not a bond but a cash guarantee to the owner that can be converted to a payment — it is not a guarantee of performance and customarily covers only 5 to 10 percent of the contract rather than 100 percent.
NASCLA Contractors Guide (14th ed.), Chapter 3 – Bond Language sectionMaintenance bonds often use a figure of 10 percent of construction cost as the required bond amount, while performance bonds are usually set at 100 percent of the contracted price.
NASCLA Contractors Guide (14th ed.), Chapter 3 (Managing Risk) — Bond Language sectionUnder the accrual method (used by most construction businesses) income is recognized when the services occur and expenses when they are incurred, not when money is collected or bills are paid.
NASCLA Contractors Guide (14th ed.), Chapter 14 — Accrual Method sectionOn the income statement, direct costs are those directly linked to a particular project (materials, subcontractor fees, permit fees, labor), while operating expenses such as office salaries, advertising, and warehouse rental are indirect.
NASCLA Contractors Guide (14th ed.), Chapter 2 — Income Statement sectionCPM graphically illustrates the interdependent relationships of tasks, whereas calendar and bar chart methods do not show interdependencies or the impact of a delay on other tasks; calendar scheduling's advantage is linking tasks to specific dates such as deliveries, payment schedules, and vacations.
NASCLA Contractors Guide (14th ed.), Chapter 8 — Critical Path Method sectionFree float is the time an activity can be delayed without impacting the early start of the next activity, while total float is leeway without delaying the overall project completion date; activities with zero float are critical activities.
NASCLA Contractors Guide (14th ed.), Chapter 8 — Float Time sectionUnder IRS guidelines (behavioral control, financial control, type of relationship), a worker who uses his own methods and tools, advertises to multiple companies, is paid a flat fee, and can realize a profit or loss is more likely an independent contractor rather than an employee.
NASCLA Contractors Guide (14th ed.), Chapter 14 — Employee vs. Independent Contractor ClassificationThe superintendent is the onsite supervisor over all daily operations (coordinating activities, tracking schedule and cost deviations, punch lists, records), while the foreman supervises specific areas by trade, such as rough carpentry or concrete installation; certifying progress payments belongs to the architect/engineer, not either one.
NASCLA Contractors Guide (14th ed.), Chapter 8 — Foreman sectionPer OAC 158:30-5-1(c) and (e), an unlimited plumbing contractor may engage in the plumbing business without category restriction, while a residential plumbing contractor is limited to detached one- or two-family dwellings and multiple single-family dwellings (townhouses) not more than three stories in height with a separate means of egress.
State Of Oklahoma, Construction Industries Board, OAC 158:30-5-1(c) and (e)When specifications and codes conflict, the contractor must follow the stricter of the two because codes are the minimum requirements by law.
NASCLA Contractors Guide (14th ed.), Chapter 6, Specifications paragraph, Bidding and Estimating chapter — Project Documents section (Page 48)Key Terms
Formulas to Know
Required Labor Hours per Task × Labor Rate = Labor Cost per Task (consider skill level, crew size, weather when setting hours)Price per Unit × Number of Units Needed = Total Material Unit Cost (add a small waste contingency that varies by material and job specs)Total overhead costs from the previous year (from the income statement, part of administrative expenses) ÷ revenues (also from the income statement); averages generally 5–20 percentDirect Costs ÷ (1 − combined overhead %) — e.g., with 9% project + 11% company overhead = 20%, $100,000 ÷ 0.80 = $125,000Standard industry markup of 15% applied to direct costs (labor, material, project equipment, project overhead, subcontractors), adjusted for market and competitionProject Costs Incurred ÷ Total Estimated Costs = % Complete; % Complete × Contract Amount = Cumulative Earnings (e.g., $300,000 ÷ $1,000,000 = 30%; 30% × $1,500,000 = $450,000)(Initial Cost − Salvage Value) ÷ Useful Life in Years (e.g., ($24,000 − $4,000) ÷ 8 = $2,500/yr)Gross Pay − Taxes & Deductions = Net Pay (Social Security, Medicare, federal/state income tax, plus insurance or 401K; e.g., $1,800 − $447.70 = $1,352.30)Per-Day Contract Rate × Number of Days Late (e.g., $500 × 20 = $10,000); an owner suing for liquidated damages cannot also sue for actual damagesCurrent Assets ÷ Current Liabilities (e.g., $26,400 ÷ $8,200 ≈ 3.22); greater than one indicates a positive liquidity position, and higher is betterAnnual Revenues ÷ 365 = Sales per Day; Accounts Receivable ÷ Sales per Day = Average Collection Period (e.g., $730,000 ÷ 365 = $2,000; $60,000 ÷ $2,000 = 30 days)