https://pressuretest.me/blog/Massachusetts plumbing exam study articleshttps://pressuretest.me/blog/circuit-venting-explained/https://pressuretest.me/blog/circuit-venting-explained/Fri, 13 Nov 2026 12:00:00 GMTLearn how Massachusetts circuit venting works, where the vent connects, which fixtures qualify, and what exam traps to avoid.https://pressuretest.me/blog/board-state-examiners-plumbing-mass/https://pressuretest.me/blog/board-state-examiners-plumbing-mass/Thu, 05 Nov 2026 12:00:00 GMTA Massachusetts-specific guide to the Board, local plumbing permits, inspectors, 248 CMR, and the PSI Journeyman exam—with worked examples.https://pressuretest.me/blog/hide-laundry-room-plumbing/https://pressuretest.me/blog/hide-laundry-room-plumbing/Wed, 04 Nov 2026 12:00:00 GMTLearn how to conceal laundry plumbing in Massachusetts while preserving access, venting, drainage, and exam-ready code reasoning.https://pressuretest.me/blog/not-double-up-pex-cinch-clamps/https://pressuretest.me/blog/not-double-up-pex-cinch-clamps/Tue, 03 Nov 2026 12:00:00 GMTLearn why doubling PEX cinch clamps can create a worse connection, how to install and remove them, and what Massachusetts apprentices should remember.https://pressuretest.me/blog/pressure-test-gas-line-section-includes-pressure-regulator/https://pressuretest.me/blog/pressure-test-gas-line-section-includes-pressure-regulator/Mon, 02 Nov 2026 12:00:00 GMTLearn how Massachusetts apprentices should handle gas pressure tests when a regulator is in the section, including LG ranges, isolation, and exam traps.https://pressuretest.me/blog/calculate-ventilation-requirements/https://pressuretest.me/blog/calculate-ventilation-requirements/Sun, 01 Nov 2026 12:00:00 GMTLearn how Massachusetts apprentices calculate plumbing vent requirements using DFUs, fixture branches, trap arms, roof terminations, and exam-ready examples.https://pressuretest.me/blog/drain-saddle-ro-system-installed/https://pressuretest.me/blog/drain-saddle-ro-system-installed/Sat, 31 Oct 2026 12:00:00 GMTLearn how to connect an RO reject line without losing trap protection, bypassing backflow safeguards, or memorizing an unsafe Massachusetts rule.https://pressuretest.me/blog/keeping-pipes-freezing/https://pressuretest.me/blog/keeping-pipes-freezing/Thu, 29 Oct 2026 12:00:00 GMTLearn how Massachusetts apprentices should prevent frozen pipes, protect PEX in attics, and avoid the winter mistakes that show up on the Journeyman exam.https://pressuretest.me/blog/drain-plumbing-replace-stop-valve/https://pressuretest.me/blog/drain-plumbing-replace-stop-valve/Wed, 28 Oct 2026 12:00:00 GMTLearn how to isolate, drain, and replace a plumbing stop valve safely, with Massachusetts Journeyman exam distinctions for water, drain, and gas valves.https://pressuretest.me/blog/good-idea-replace-60-year-old-cast-iron-drainage-pipe-while/https://pressuretest.me/blog/good-idea-replace-60-year-old-cast-iron-drainage-pipe-while/Tue, 27 Oct 2026 12:00:00 GMTLearn when replacing old cast-iron drainage pipe during a Massachusetts renovation makes sense, how to transition to PVC, and the exam traps to avoid.https://pressuretest.me/blog/these-metal-pipes-emerging-foundation-wall-entering-basement/https://pressuretest.me/blog/these-metal-pipes-emerging-foundation-wall-entering-basement/Mon, 26 Oct 2026 12:00:00 GMTIdentify mystery metal pipes through a Massachusetts foundation wall or basement slab, avoid unsafe removal, and study the DWV exam traps.https://pressuretest.me/blog/nfpa-55/https://pressuretest.me/blog/nfpa-55/Sun, 25 Oct 2026 12:00:00 GMTLearn what NFPA 55 covers, how it differs from Massachusetts plumbing rules, and how to study codebook questions for the Journeyman exam.https://pressuretest.me/blog/connect-hvac-condensate-pump-drain-tubing-kitchen-sink-tailp/https://pressuretest.me/blog/connect-hvac-condensate-pump-drain-tubing-kitchen-sink-tailp/Sat, 24 Oct 2026 12:00:00 GMTLearn the correct way to route HVAC condensate pump tubing to a kitchen sink tailpiece, protect the trap seal, and avoid Massachusetts exam traps.https://pressuretest.me/blog/plumbing-license-reciprocity-massachusetts/https://pressuretest.me/blog/plumbing-license-reciprocity-massachusetts/Fri, 23 Oct 2026 12:00:00 GMTLearn how Massachusetts plumbing license reciprocity works, what substantially equivalent means, and how NH, ME, RI and CT applicants should proceed.https://pressuretest.me/blog/journeyman-vs-master-plumber-massachusetts/https://pressuretest.me/blog/journeyman-vs-master-plumber-massachusetts/Wed, 21 Oct 2026 12:00:00 GMTLearn what Massachusetts journeyman and master plumbers can do, including permits, business limits, supervision, and the path from apprentice to master.https://pressuretest.me/blog/apprentice-supervision-ratio-massachusetts/https://pressuretest.me/blog/apprentice-supervision-ratio-massachusetts/Tue, 20 Oct 2026 12:00:00 GMTLearn when a Massachusetts plumbing apprentice may work, why direct supervision matters, how gas work differs, and what ratio questions can trip you up.https://pressuretest.me/blog/massachusetts-apprentice-plumber-license/https://pressuretest.me/blog/massachusetts-apprentice-plumber-license/Thu, 15 Oct 2026 12:00:00 GMTLearn how to apply for, maintain, and renew a Massachusetts apprentice plumber license, including the employer statement, CORI form, and exam path.https://pressuretest.me/blog/water-pressure-per-foot-of-elevation/https://pressuretest.me/blog/water-pressure-per-foot-of-elevation/Sun, 11 Oct 2026 12:00:00 GMTLearn the 0.433 psi-per-foot elevation rule, convert feet of head to pressure, and solve Massachusetts Journeyman exam water-pressure problems.https://pressuretest.me/blog/pipe-offset-formula-45-and-rolling/https://pressuretest.me/blog/pipe-offset-formula-45-and-rolling/Fri, 09 Oct 2026 12:00:00 GMTLearn the plumbing offset formula for 45-degree and rolling offsets, including travel, run, fitting takeoff, calculator steps, and exam traps.https://pressuretest.me/blog/grease-interceptor-sizing-massachusetts/https://pressuretest.me/blog/grease-interceptor-sizing-massachusetts/Thu, 08 Oct 2026 12:00:00 GMTLearn the Massachusetts grease interceptor sizing method, fixture survey, flow calculation, venting, access rules, and exam traps with a worked example.https://pressuretest.me/blog/backflow-preventer-types-massachusetts/https://pressuretest.me/blog/backflow-preventer-types-massachusetts/Mon, 05 Oct 2026 12:00:00 GMTLearn how Massachusetts apprentices choose RPZ, DCVA, PVB, AVB, or an air gap by hazard, backflow condition, testing, and exam traps.https://pressuretest.me/blog/minimum-plumbing-fixtures-massachusetts/https://pressuretest.me/blog/minimum-plumbing-fixtures-massachusetts/Sun, 04 Oct 2026 12:00:00 GMTLearn the Massachusetts fixture-count method under 248 CMR 10.10 Table 1, with 50/50 examples, round-up rules, DFUs, and exam traps.https://pressuretest.me/blog/water-pipe-sizing-massachusetts/https://pressuretest.me/blog/water-pipe-sizing-massachusetts/Sat, 03 Oct 2026 12:00:00 GMTLearn the Massachusetts 248 CMR 10.14 water-pipe sizing sequence: fixture values, demand factors, capacity values, pipe sizes, and exam traps.https://pressuretest.me/blog/vent-pipe-sizing-massachusetts/https://pressuretest.me/blog/vent-pipe-sizing-massachusetts/Thu, 01 Oct 2026 12:00:00 GMTLearn how to size plumbing vents in Massachusetts using 248 CMR, DFUs, trap-arm limits, minimum vent rules, and exam-focused worked examples.https://pressuretest.me/blog/wet-venting-massachusetts/https://pressuretest.me/blog/wet-venting-massachusetts/Wed, 30 Sep 2026 12:00:00 GMTLearn Massachusetts wet-venting rules for bathroom groups, fixture-unit sizing, diagrams, exam traps, and the difference between 248 CMR and the IRC.https://pressuretest.me/blog/air-admittance-valves-massachusetts/https://pressuretest.me/blog/air-admittance-valves-massachusetts/Tue, 29 Sep 2026 12:00:00 GMTLearn whether AAVs are legal in Massachusetts, what 248 CMR requires, the Board’s Special-Permission rule, alternatives, and exam traps.https://pressuretest.me/blog/plumbing-isometric-drawing-practice/https://pressuretest.me/blog/plumbing-isometric-drawing-practice/Mon, 28 Sep 2026 12:00:00 GMTLearn to read Massachusetts plumbing isometrics with fixture-unit sizing, vent paths, trap arms, symbols, worked examples, and exam-style practice answers.https://pressuretest.me/blog/bow-vent-massachusetts/https://pressuretest.me/blog/bow-vent-massachusetts/Sun, 27 Sep 2026 12:00:00 GMTA bow vent under 248 CMR 10.16(9): when MA allows it at an island sink, how it is sized from Table 2, and why an AAV or wet vent is not the answer.https://pressuretest.me/blog/drain-pipe-size-by-fixture-units/https://pressuretest.me/blog/drain-pipe-size-by-fixture-units/Sun, 27 Sep 2026 12:00:00 GMTMassachusetts drain pipe sizing chart from 248 CMR 10.15: fixture units per fixture, branch, stack and building drain limits, plus a full-house example.https://pressuretest.me/blog/plumbing-math-formulas-cheat-sheet/https://pressuretest.me/blog/plumbing-math-formulas-cheat-sheet/Sun, 27 Sep 2026 12:00:00 GMTA Massachusetts-specific plumbing math formula sheet with worked examples for DFUs, slope, pressure, volume, offsets, gas sizing, and exam traps.https://pressuretest.me/blog/trap-arm-length-massachusetts/https://pressuretest.me/blog/trap-arm-length-massachusetts/Sun, 27 Sep 2026 12:00:00 GMTThe Massachusetts trap arm length chart from 248 CMR 10.16 Table 1: 5, 6, 8 and 10 ft, how to measure it, the slope limit, and where MA differs.