MEP Mechanical & Electrical Vocabulary: 7 Branches & 65 Key Terms

Comprehensive vocabulary flashcards covering all 65 key terms and phrases across 7 distinct MEP (Mechanical, Electrical, and Plumbing) engineering branches: People, Locations, Equipment, Drawings, Parameters and Units, Documentation, and Activities.

Client

A project participant categorized under People who represents the customer or ordering party.

Main Contractor

The principal contractor holding primary responsibility for overall site execution and management (Category: People).

Subcontractor

A secondary contractor hired by the main contractor to carry out specific or specialized work packages (Category: People).

Supplier

An entity or vendor responsible for providing materials, equipment, and components for a project (Category: People).

Site Engineer

A field engineer stationed on-site to direct daily engineering activities and oversee installation execution (Category: People).

Supervisor

A site official responsible for inspecting work quality, supervising personnel, and overseeing operational activities (Category: People).

Technician

A skilled technical tradesperson responsible for hands-on assembly, operation, and maintenance tasks (Category: People).

Construction Site

The physical jobsite or designated area where building and MEP installation activities take place (Category: Locations).

Pump Room

A dedicated room housing water pumps, valves, and associated fluid-handling piping infrastructure (Category: Locations).

Electrical Room

A specialized service room dedicated to housing electrical distribution boards, panels, and switchgear (Category: Locations).

Equipment Room

A designated room housing mechanical, electrical, and facility machinery and hardware (Category: Locations).

Installation Area

The specific physical zone or space within a facility where MEP systems are assembled and installed (Category: Locations).

Service Shaft

A vertical conduit or technical shaft running through a building to route electrical cables, ducting, and piping (Category: Locations).

Rooftop

The top roof area of a building, frequently utilized for locating outdoor mechanical equipment and water storage tanks (Category: Locations).

Equipment

A general categorical term referring to all mechanical, electrical, and plumbing machinery, apparatus, and devices (Category: Equipment).

Water Tank

A storage vessel or reservoir designed to store water for building services and plumbing systems (Category: Equipment).

Pump

A mechanical machine utilized to move, transfer, or increase the pressure of liquids through pipes (Category: Equipment).

Pipe

A tubular conduit or line used to convey fluids, liquids, or gases from one location to another (Category: Equipment).

Pipe Fitting

A plumbing or piping component (such as an elbow, tee, or union) used to connect, join, or redirect pipes (Category: Equipment).

Valve

A mechanical device installed in a piping network to regulate, direct, or completely shut off fluid flow (Category: Equipment).

Electrical Panel

An enclosed metal cabinet housing circuit breakers, switches, and electrical distribution equipment (Category: Equipment).

Temperature Sensor

A sensing instrument that detects and measures the thermal temperature of a medium or component (Category: Equipment).

Pressure Sensor

An electronic transducer designed to measure and convert fluid or gas pressure into an electrical signal (Category: Equipment).

Level Sensor

A sensor that monitors and detects the liquid level inside a vessel, reservoir, or tank (Category: Equipment).

Pressure Gauge

A visual dial indicator instrument used to measure and display hydrostatic or pneumatic pressure (Category: Equipment).

Flow Meter

A measurement device installed in a piping line to determine the volumetric or mass flow rate of a fluid (Category: Equipment).

Water Meter

A dedicated measuring device used to monitor and record the volume of water consumed (Category: Equipment).

Float Switch

A level-responsive switch that opens or closes an electrical circuit based on the position of a floating element in a liquid tank (Category: Equipment).

Layout Drawing

An engineering drawing depicting the spatial arrangement and layout plan of MEP systems within a facility (Category: Drawings).

Plan View

A horizontal top-down projection view showing the layout of spaces, walls, and equipment on a given floor (Category: Drawings).

Section View

A cutaway drawing showing the internal construction and vertical relationships of a structure along a cutting plane (Category: Drawings).

Detail Drawing

An enlarged, detailed engineering view showing specific assembly methods, dimensions, and connections (Category: Drawings).

Schematic Diagram

A conceptual diagram showing the operating principles and functional connections of a system rather than physical scale (Category: Drawings).

Shop Drawing

A detailed construction drawing produced by the contractor or fabricator to direct on-site fabrication and installation (Category: Drawings).

As-Built Drawing

A final record drawing revised to reflect the actual, completed installation as constructed on-site (Category: Drawings).

Layer

An organizational level used in AutoCAD to categorize, group, and control the display properties of graphic objects (Category: Drawings).

Revit Family

A grouped collection of elements in Revit sharing a common set of geometric parameters, properties, and behaviors (Category: Drawings).

Diameter

A geometric dimension measuring the width across a circular cross-section, typically quantified in units of $\text{mm}$ (Category: Parameters and Units).

Length

A linear dimension measuring spatial extent or span, typically quantified in units of $\text{mm}$ or $\text{m}$ (Category: Parameters and Units).

Thickness

A physical dimension representing the distance through an object or pipe wall, typically quantified in units of $\text{mm}$ (Category: Parameters and Units).

Tank Capacity

A parameter indicating the total holding volume of a storage vessel, typically quantified in units of $\text{L}$ or $\text{m}^3$ (Category: Parameters and Units).

Liquid Level

A parameter representing the height or percentage of liquid present in a container, quantified in units of $\text{mm}$ or $\text{\%}$ (Category: Parameters and Units).

Flow Rate

A parameter measuring fluid volume movement per unit time, quantified in units of $\text{L/min}$ or $\text{m}^3/\text{h}$ (Category: Parameters and Units).

Pressure

A parameter measuring continuous force exerted by a fluid per unit surface area, quantified in units of $\text{bar}$ or $\text{kPa}$ (Category: Parameters and Units).

Temperature

A parameter measuring thermal energy or degree of hotness/coldness, quantified in units of $^\circ\text{C}$ (Category: Parameters and Units).

Voltage

A parameter indicating electrical potential difference, quantified in units of $\text{V}$ (Category: Parameters and Units).

Current

A parameter measuring the rate of electric charge flow through a conductor, quantified in units of $\text{A}$ (Category: Parameters and Units).

Power

A parameter representing the rate of electrical energy transfer or work performed, quantified in units of $\text{W}$ or $\text{kW}$ (Category: Parameters and Units).

Technical Specification

A project document setting out exact technical requirements, design standards, and material criteria (Category: Documentation).

Datasheet

A technical document summarizing equipment performance parameters, technical characteristics, and ratings (Category: Documentation).

Equipment List

A formal inventory schedule enumerating all equipment items, quantities, and models designated for a project (Category: Documentation).

Method Statement

A procedural document outlining the specific step-by-step construction methods and safety controls for an activity (Category: Documentation).

Inspection Request

A formal document submitted by a contractor requesting an inspection or acceptance check of completed works (Category: Documentation).

Inspection Record

A written minutes or protocol documenting the observations, verifications, and results of an inspection (Category: Documentation).

Test Report

An official report presenting the methods, data measurements, and performance outcomes of testing procedures (Category: Documentation).

Handover Documents

A comprehensive compilation of final project manuals, as-built records, and certificates delivered to the client at handover (Category: Documentation).

Review Drawings

The routine MEP activity of examining and verifying engineering drawings to ensure coordination and identify discrepancies (Category: Activities).

Revise the Layout

The routine MEP activity of altering, updating, or correcting the physical arrangement of equipment and lines on a plan (Category: Activities).

Check the Dimensions

The routine MEP activity of measuring and verifying physical sizes, lengths, and clearances against drawings (Category: Activities).

Install a Water Tank

The routine MEP activity of positioning, mounting, and securing a water storage tank in its designated location (Category: Activities).

Connect the Pipes

The routine MEP activity of joining, fitting, and sealing piping segments and equipment into a closed circuit (Category: Activities).

Check the Pressure

The routine MEP activity of verifying hydrostatic or pneumatic pressure using a gauge or sensor to ensure proper operation (Category: Activities).

Record the Readings

The routine MEP activity of logging measured numeric values from gauges, meters, and sensors into project records (Category: Activities).

Inspect the Installation

The routine MEP activity of formally examining installed systems and equipment to verify compliance with standards (Category: Activities).

Submit the Documents

The routine MEP activity of formally handing over engineering records, requests, or reports to the supervisor or client (Category: Activities).