Don't let the fast talkers confuse you with lingo, be prepared with our Glossary of Terms

Just click on a letter and we will magically bring you to your term! 
Actually they're just hyper-text links to a alphabetical listing, but use your imagination!

a - b - c - d - e - f - g - h - i - j - k - l - m - n - o - p - q - r - s - t - u - v - w - x - y - z

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a

AISC - American Institute of Steel Construction.  Organization that regulates steel construction practices and safety measures.  It is very important that your mezzanine manufacturer conforms to all AISC regulations and specifications

 

Anchors –  Used to attach the foot plates to the floor. Generally 4” to  4-1/2” long x 3/4” to 5/8” wide . Holes are drilled in the flooring and the anchors are set in place.

 

Approval Drawings -  CAD generated blueprints showing all dimensions, systems details, and orientation with related scope of work. Approval drawings must be checked for accuracy and signed. This directs the manufacturer as which way to proceed.

 

ASTM -  American Society for Testing and Materials.  Organization that puts forth stringent testing policy for most materials.  All steel non fabricated steel components must conform to ASTM regulations, demand it!

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 b

 

Bar Joist – An open web framing component used to span large areas.  Also Open Web Bar Joist.

 

Bar Grating –Steel or fiberglass manufactured to produce an open grid load carrying deck. Typically used on mezzanines to accommodate air flow and light from one level to another. Standard type used on mezzanines is (1” x 1/8”).

 

Base Plate – Also referred to as a foot plate. A steel plate which is welded to the bottom of a column to help support the column and distribute the Floor Load.

 

B-Deck – Also referred to as roof deck or corrugated steel. Corrugated steel used as a deck substructure under plywood, floor plate and concrete. General made of 18 or 20 gauge galvanized steel material.

 

Beam – Wide flange structural member identified by depth & weight, or sheet steel bent to increase structural integrity.

 

BOCA- Building Officials & Code Administrators International.  The national building code standard for public access mezzanine systems.

 

Building Codes – Requirements for construction that typically only effects handrail and stair design as related to mezzanines. Various codes are UBC, SBCC and BOCA. OSHA is a federal standard which many times is referred to incorrectly as a code.

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c

CABO - Council of American Building Officials

 

Calculations – Mathematical computations which prove the integrity of a structural design. In most cases the are sealed by a Professional Engineer registered in the state where the project is located. Typically required when applying for a building permit in a mid to high seismic zone.  Also called Seismic Calculations

 

Catwalk – A narrow walkway, often elevated. A mezzanine catwalk system is most often used with shelving to create an elevated walkway between the shelving units.  Also referred to as Shelving or Rack Supported Mezzanines

 

C-Channel - A beam that has a C shaped profile.  Generally used to describe Cold Rolled Steel however, Structural Steel is also made into C-Channels.

 

Clear Height – The dimension from the floor to the underside of the mezzanine framing.

 

Clear Span - The distance between mezzanine columns.  Generally longer on structural steel mezzanines than on any other type.  Also referred to as Column Spacing

 

Cold Rolled Steel – Sheet steel that is bent into C-Channel Beams to increase structural integrity.  Weight, Load Capacity and Clear Spans are decreased with this design.  Cold Rolled Steel Mezzanines are generally cheaper to produce and install and have quicker production times than Structural Steel Mezzanines.

 

Column – Square tube steel  used to support mezzanine framing at a desired elevation. Standard column would be 5” x 5”, 6”x 6”, 7” x 7” ect.

 

Column Load - The weight applied to each column in a floor supported mezzanine system calculated in pounds per square foot (PSF)  Column Load divided into the size of the base plate will give the Floor Load

 

Column Spacing - The distance measured between one column and another.  Also referred to as Clear Span

 

Corral Gate-  A gate designed  for the upper level of a mezzanine to handle large pallet loads quickly and safely. The corral gate is designed to pivot and provide an integral railing at the mezzanine’s edge to prevent accidental falls.

 

Corrugated Steel- Sheet steel that is bent and formed to increase strength, creating a "wave" profile.  Corrugated steel generally has a galvanized finish.  Also called b-deck or roof deck

 

C-Section – 9, 11, or 12 gauge flat steel which is brake formed into the shape of a letter “C” and is 12”, 16" or 20" deep.    Often produces a more cost effective beam on small mezzanines but not practical on large systems.  See also Cold Rolled Steel Mezzanines , C-Channel

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d

Dead Load Capacity - The weight of the mezzanine resting on floor columns divided by the total square footage of the mezzanine floor.  This number plus the Live Load Capacity divided into the columns will give the column load

 

Decking – The traffic or walking surface of a mezzanine, typically plywood, floor/diamond plate, specialty wood panels, bar grating and sometimes concrete.  See also Bar Grating, B-Deck, xxxx

 

Deck Height – The dimension from the floor to the top of the mezzanine deck.  See also Clear Height

 

Deflection -  Applied to mezzanines it is the measured amount of sag that a framing member exhibits under stress of the design load.

 

Diamond Plate – Material of choice for heavy loads and forklift traffic. Impervious to liquids, providing outstanding wear resistance, with embossed pattern to reduce slippage.

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e

External Stairs –  A stairway that runs parallel or perpendicular to the mezzanine perimeter, existing entirely on the outside of the mezzanine perimeter. An intermediate landing is generally required  to access the mezzanine from external stairways.  See also Internal Stairs.

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f

Floor Load - The total weight applied on a floor by a mezzanine system.  Calculated in pounds per square inch (PSI) per base plate or foot plate.  See also Column Load, Load Capacity, Live Load Capacity and Dead Load Capacity

 

Floor Plate – 12 gauge steel in either a diamond pattern or smooth. Used as a deck surface over roof deck. It is typically used for durability in high traffic areas. 

 

Foot Plate - Also base plate

 

Footings – Typically a reinforced area of concrete designed to support the point load of a mezzanine column.

 

Free Standing – A mezzanine system which is not connected to the building structure in any manner and is self supported.

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g

Guardrail – The railing system that protects one from falling off a mezzanine structure. It  is often referred to as handrail. The most common are (2) & (3) rail systems.

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h

Handrail – The continuous welded rail on a stair unit.

 

Hot-Dipped Galvanized –  The most effective method used to apply a zinc coating to steel. The zinc coating provides barrier and cathodic protection to the underlying steel surface. The preferred choice to protect steel from corrosion.

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i

Internal Stairs –  A stairway that runs inside or through the mezzanine floor. Most cases a landing is not needed when you have an internal stairway.

 

Intermediate Landing – A landing halfway between the bottom and the top of the stairs. Intermediate landings are  required  by code anytime the mezzanine deck height exceeds 12’.

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j

Joist – The framing member that substantiates the majority of the framing and runs between the girders. Joists are spaced to accommodate load and deflection criteria.

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k

Kickplate – Sometimes referred to as toe plate. This formed angle is used to trim off the open edge of the decking material and serve as a barrier to stop material from sliding or being pushed off the mezzanine under the guardrail.

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l

Landing – Provided on staircases to allow entrance when stairs run parallel to the mezzanine or in tight spaces when stairs are required to turn corners.

 

Lift Out Gate-  A gate designed to be completely removed to create access to mezzanine. Generally made out of the same material as the mezzanine handrail.

 

Live Load Capacity - The weight capacity of a mezzanine system calculated in pounds per square foot (PSF).  Common capacities are 110 PSF, 125 PSF, 150 PSF.  The live load plus the dead load divided into the columns will give the Column Load.

 

Load Capacity - How much weight a mezzanine system or particular mezzanine component can hold.  AISC requires at least a 1.65 built in safety factor.  See also Live Load Capacity and Dead Load Capacity

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m

Material Lift – Elevator like lift designed to  take materials from one level of the mezzanine to the other. Designed to carry materials only, not people.

 

Mezzanine -  A mezzanine is a partial story within a building, built between two permanent original stories. Mezzanines are generally free standing and can be relocated.

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n

NSPE – National Society for Professional Engineers.

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o

Open Web Bar Joist – An open web framing component used to span large areas.  Also Bar Joist.

O.S.B. – Oriented Strand Board. A composite wood product used for mezzanine flooring.

OSHA - Occupational Safety & Health Administration is the regulatory body that dictates workplace safety and health procedures and policies.  OSHA standards are the basis for every national building code in existence.  OSHA is very active in mezzanine construction and will enforce the removal or repair of non-OSHA approved fabrication.  Make sure your mezzanine manufacturer is well versed in OSHA regulations.

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p

PE Seal – The seal of a registered professional engineer that is applied to final drawings and calculations. This service general carries an additional charge and is typically required by local building departments if a permit for the project is required.

 

Plywood – Can be Ύ” T&G, Ύ” Squared Edge, or Ύ” Fire Treated Underlayment Grade and is used for an economical walking/storage surface over roof deck.

 

Point Load – A specific amount of weight being applied to a specific area. Often referred to a concentrated load. Point loads can be mezzanine columns, shelving legs, wheels from

a pallet jack or storage tanks, ect.

 

Powder Coat –  The process of applying a powder material to the metal and then heating or baking the powder to the metal to create a sealed paint finish.

 

PSF – (Pounds Per Square Foot) measurement used to determine the mezzanines ability to support weight.

 

PSI – (Pounds Per Square Inch) measurement used  to determine the mezzanines ability to support weight.

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q

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r

Resin Board – A wood board manufactured with glue and wood under pressure to form a product which is designed for applications that require wheel traffic. This board is typical sealed to prevent moisture absorption.

 

Roof Deck – Often referred to as B-Deck or Corrugated Steel. Corrugated steel used as a deck substructure under plywood, floor plate, and concrete. It is typical made from a galvanized material.

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s

SBCC - Southern Building Code Congress International  Regional  building code that regulated construction in certain zones of the USA

 

Seismic -  In terms of mezzanines it is the ability of the mezzanine to withstand movement caused by earthquakes, earth vibrations or earth movements.

 

Seismic Calculations – Mathematical computations which prove the integrity of a structural design. In most cases the are sealed by a Professional Engineer registered in the state where the project is located. Typically required when applying for a building permit in a mid to high seismic zone.  Also referred  to as calculations

 

Shelving or Rack Supported Mezzanine - A mezzanine system that is created by building catwalks and access pass-thrus through shelving and pallet rack systems, allowing pedestrian access to upper levels of storage.

 

Slide Gate –  Generally 4, 5 or 6 feet in length. The gate is designed to slide along the edge of the mezzanine to allow access to the mezzanine. It can be opened either manually or electrical power.

 

Span – The distance of a framing member between columns. Bar joist framing allows the maximum span when designing a mezzanine.

 

Structural Steel -

 

Swing Gate -  Generally designed with a spring loaded hinge that will return to its original position when not held open. Most cases the gate is constructed with the same material used for the mezzanine rail system.

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t

T&G –  Tongue and Grooved. Method applied to plywood edges which allows two pieces of wood to interlock with one another.

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u

UBC - Uniform Building Code  Regional  building code that regulated construction in certain zones of the USA

Uniform Live Load – The amount of weight that a mezzanine system is designed to carry. This is designated as PSF (pounds per square foot). Standard design capacity for storage on a mezzanine is 125 PSF.

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v

VRC – Vertical Reciprocating Conveyor. Also referred to as a material lift (see material lift).

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w

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x

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y

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z

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