139 field terms starting with G, 23 with a full reference page. Each links to the Anvilfield guides where the term is used on the job.
G702 / G703
The AIA application and certificate for payment (summary) and the continuation sheet (line-item detail); two halves of one pay applicationIn: Owner-ready reports and billing backup
Gain
The length a 90 saves by sweeping a radius instead of a sharp corner, subtracted on a measured pieceIn: Conduit bending fundamentals
Many panels joined into one rigid unit that is set, stripped, and flown by crane as a single piece for large repeating wallsIn: Formwork types and systems
An air bleed on an oil-sealed pump that keeps condensable vapor from collecting in the oilIn: Lab and process vacuum systems
Gas connector and restraint cable
A listed flexible gas connector with a quick-disconnect lets a movable appliance roll out for cleaning; the restraint cable stops it before it strains the gas lineIn: Kitchen equipment install field guide
Gas-permeable layer
A bed of clean coarse aggregate under the slab that lets soil gas and the system's suction spread across the footprintIn: Radon and vapor-intrusion mitigation
A zippered bag that wraps the trunk and weeps a slow soak into the root ball over hours; remove it once watering tapers offIn: Tree establishment and aftercare
Grounding electrode conductor to the earth electrodes, and equipment grounding conductor for the fault pathIn: Ground resistance testing
Gel / working time
The short window after dispensing during which the rod can still be set and adjustedIn: Adhesive anchor installation
General conditions
The project-level indirect costs of running one job, distinct from company overhead; sometimes also the contract's legal termsIn: General conditions and indirect costs
General industry, OSHA 1910, governs the owner's maintenance access; construction, OSHA 1926, governs the contractor building or re-roofingIn: Rooftop permanent fall protection
General requirements
CSI MasterFormat Division 01: the spec sections for temporary facilities, submittals, quality, scheduling, and closeoutIn: General conditions and indirect costs
Geocomposite / fin drain
Prefabricated plastic drainage core wrapped in geotextile, a thin vertical alternative to the aggregate trenchIn: Pavement subdrains and edge drains
Geofence
A virtual boundary around a jobsite that can prompt clock-in and clock-out and stamp where a punch happenedIn: Field time tracking and labor hours
A geotextile is a closed fabric that separates and filters; a geogrid is an open grid that reinforces by aggregate interlock.In: Geotextile separation fabric
Bark and cambium gnawed or rubbed all the way around a trunk, which cuts the flow between roots and canopy and kills the plantIn: Deer and wildlife protection
Removing failed or broken glass and setting new glass that meets or beats the code-required glazing for the locationIn: Glass replacement and glazing repair
Glass-compatibility chart
The film manufacturer's chart or calculator that approves a specific film for a specific glass before applicationIn: Commercial window film
Glassbreak / shock
Acoustic glassbreak hears breaking glass across a room; shock senses impact on the single pane or safe it is mounted toIn: Intrusion alarm field guide
Glide
The temperature spread of a zeotropic blend at one pressure; use dew point for superheat, bubble point for subcoolingIn: Refrigerant charging field guide
A single-use sealed bag with built-in gloves fitted around pipe or a fitting for small removals, max ~60 by 60 in, not above 150 degrees FIn: Asbestos abatement procedures
The field tool that reads glycol concentration from a drop of fluid, confirming freeze protection and flagging dilutionIn: Hydronic water and glycol field guide
Gmax
Surface-hardness number from a drop-impact test; below 200 per ASTM F1936 is the common targetIn: Sports field construction
Guaranteed maximum price, the contractor's capped commitment, with the owner paying the actual cost of the work plus a fee up to the cap.In: Preconstruction field guide
Gallons per flush, the volume the valve delivers; the WaterSense and code limits are set in gpf.In: Flushometer flush valve types
gpf / gpm
Gallons per flush for a toilet or urinal, gallons per minute for a faucet or showerhead; the units the efficiency limits are written inIn: Fixtures and water efficiency
Position from a base station or corrected signal that ties every IC reading to a location on the matIn: Intelligent compaction for asphalt
GPS / GNSS RTK
Satellite positioning with real-time kinematic corrections from a base to a rover, accurate to about a centimeter, for site and earthwork layoutIn: Construction layout
A listed insulation blanket around the duct, rated for fire resistance and reduced clearanceIn: Kitchen grease duct field guide
Green tag
The AHJ inspection approval that releases the utility to reconnect and set the meterIn: Service and panel upgrade
Grid flexibility
The ability to vary a site's grid draw on demand, by shaving, shifting, shedding, or curtailing, without dropping the critical loadIn: Data center grid flexibility
Grind and polish
Cutting the cured topping with progressively finer diamonds to expose the chips and bring the surface to the specified finishIn: Terrazzo flooring install and polish
Grooved coupling
A gasketed, segmented housing over a rolled or cut groove, the fast mechanical joint for large steel under AWWA C606In: Pipe joining methods
Strengthening or stabilizing weak soil in place so it carries the structure without deep foundations or full excavationIn: Ground improvement and grouting
Connecting the system to earth for voltage stabilization, surge and lightning, and a common reference, not for clearing faultsIn: Grounding vs bonding explained
Grounding conductor (EGC)
The equipment grounding conductor, a bonding conductor that carries fault current back to the source to trip the breaker, sized from the overcurrent deviceIn: Grounding vs bonding explained
All qualifying electrodes at a building bonded into one earth connection for reference, surge, and lightningIn: Grounding vs bonding explained
Group / team control
The coordinated mode where in-row units in a zone share a demand signal so they split load instead of fightingIn: In-row cooling commissioning
Group A / Group B
A keeps the platform over the chassis (scissor, vertical mast); B reaches beyond it (boom lifts)In: Aerial lift and MEWP safety
Group lockbox
A box holding the isolation keys, with each exposed worker's personal lock on it, so no key comes out until all workers are clearIn: Lockout/tagout field guide
Grout coat
A matching matrix spread after the first grind to fill the pinholes and voids, cured, then ground back off the fieldIn: Terrazzo flooring install and polish
Grout-filled sleeve
A coupler where bars set in an oversized sleeve are bonded by high-strength grout, common in precastIn: Mechanical splices and couplers
Grout: cementitious vs epoxy
Cementitious grout (ANSI A118.6 and A118.7) is common and needs sealing; epoxy grout (A118.3) resists stains and chemicals and does not need sealing.In: Ceramic and porcelain tile installation
Grow lights
Supplemental lighting on a spectrum, intensity, and photoperiod that gives interior plants the light the room cannotIn: Living wall and green wall systems
Grow-your-own
Building technicians through training and apprenticeship rather than hiring already-experienced people from a scarce poolIn: Data center staffing and workforce
GRR
Galvanized requiring replacement, galvanized pipe downstream of lead that absorbed and re-releases leadIn: Lead service line guide
GT-1
ANSI/SPRI test standard for the wind and load resistance of external gutter systemsIn: Gutters and downspouts
The bolted-and-blocked connection with a hold-down that carries the guard load into the frame; the weak point when a post is only surface-laggedIn: Deck construction field guide
Guardrail
A passive barrier at the edge that stops a worker reaching the fall, needing no harness or clip-inIn: Rooftop permanent fall protection
Guardrail (guard)
The code-required fall barrier at a drop-off over the height threshold, sized for a height, a load, and the infillIn: Metal railing and guardrail fabrication
Guardrail (height / load / 4-in sphere)
A fall barrier, commonly 36 in tall residential, resisting a 200 lbf concentrated load, with infill that blocks a 4 in sphereIn: Deck construction field guide
Guide
A support that holds the pipe in line but lets it slide along its axisIn: Pipe thermal expansion
Gross vehicle weight rating, the maximum loaded weight the manufacturer rates for the vehicle, and a regulatory threshold at 10,001 lbIn: Fleet and driver safety program
GVWR / GCWR
Gross vehicle weight rating for a single unit, gross combination weight rating for a truck plus trailer, set by the manufacturerIn: DOT compliance for contractors
A panel of gypsum core wrapped in paper or glass mat, screwed to framing to form the interior face of walls and ceilingsIn: Drywall and gypsum board finishing