Elevator

How traction and hydraulic elevators actually move a car, and why building height decides which one you meet.

The hoistway from pit to overhead: rails, car, counterweight, buffers, and the names A17.1 gives them.

Geared and gearless traction machines, roping arrangements, and what rope condition tells you.

In-ground, holeless and roped hydraulic designs: jacks, valves, oil, and the faults each produces.

Door operators, interlocks and reopening devices: the equipment behind most elevator service calls.

The overspeed governor and car safety: the mechanical chain that makes a falling elevator nearly impossible.

From relay logic to microprocessor dispatch: how the controller decides where the car goes and proves it is safe to move.

Steps, chains, handrails and combplates: how escalators and moving walks differ from elevators in mechanism and in maintenance.

MRL designs put the machine in the hoistway: what that changes for installation, maintenance access, and modernization work.

Platform lifts, LULA elevators and dumbwaiters: the smaller conveyances, the separate codes that govern them, and the CAT credential that maps to the work.

Planned maintenance on a unit-by-unit program: what gets checked, how often, and why the code expects it documented.

A working method for elevator callbacks: read the fault, prove the safety chain, and split the system before swapping parts.

What ASME A17.1/CSA B44 covers, how the code is organized, and how mechanics look things up in it.

What inspectors witness and mechanics perform: periodic inspections and the recurring test regime that keeps a unit legal to run.

Car-top access, pit access, and controlling stored energy: the safety habits that define this trade from day one.

How IUEC recruitment really works: the application window, the EIAT, the interview, and the 4-to-5-year NEIEP apprenticeship that follows.

NAEC's Certified Elevator Technician track explained: Level 1 to the AET certificate, Level 2 to CET, and who the program is actually for.

Most states license elevator mechanics: the Massachusetts, Washington and New York patterns show the three shapes state rules take.

What the QEI designation is, the ASME QEI-1 experience it requires, and how NAESA and NAEC certification exams work.

The EIAT is the gate into the trade: 100 questions on reading, mechanical aptitude and math, pass at 70 percent, then an interview.