Abbreviation

AASHTO: AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS

ACI: AMERICAN CONCRETE INSTITUTE

AGMA: AMERICAN GEAR MANUFATURERS ASSOCIATION

AISC: AMERICAN INSTITUTE OF STEEL CONSTRUCTION

ANSI: AMERICAN NATIONAL STANDARDS INSTITUTE (ADDRESS : AMERICAN NATIONAL STANDARDS INSTITUTE, INC., 11 WEST 42ND STREET, NEW YORK, NY 10036)

API: AMERICAN PETROLEUM INSTITUTE (ADDRESS : 2101 L ST. N.W., WASHINGTON D.C. 20037)

ASHRAE: AMERICAN SOCIETY OF HEATING, REFRIGERATION, AND AIR CONDITIONING ENGINEERS

ASHVE: AMERICAN SOCIETY OF HEATING AND VENTILLATING ENGINEERS

ASME: AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ADDRESS : 345 EAST 47TH STREET, NEW YORK, NY 10017)

ASTM: AMERICAN SOCIETY OF TESTING MATERIALS (ADDRESS : 100 BARR HARBOR DRIVE, WEST CONSHOHOCKEN, PA 19428)

ASNT: AMERICAN SOCIETY OF NONDESTRUCTIVE TESTING (ADDRESS : 4153 ARLINGTON PLAZA, COLUMBUS, OH 43228-0518)

AWS: AMERICAN WELDING SOCIETY (ADDRESS : 550 LEJEUNE RD., P.O. BOX 351040, MIAMI, FL 33135)

AWWA: AMERICAN WATER WORKS ASSOCIATION

BCC: BODY CENTERED CUBIC STRUCTURE

CIF: MEANS COST INSURANCE AND FREIGHT. THAT MEANS SHIPPER/TRADER HAS TO PAY THE COST OF SHIPMENT UP TO THE SHIP, INSURANCE COST OF CARGO AND FREIGHT COST UP TO DESTINATION PORT

CTI: COOLING TOWER INSTITUTE

DEMA: DIESEL ENGINE MANUFACTURERS ASSOCIATION

DN: DIAMERTER NOMINAL (METRIC SYS.) , DN=25*NPS

DB: DRY BULB

EFW: ELECTRIC FUSION WELDED

EPA: ENVIRONMENTAL PROTECTION AGENCY

ERW: ELECTRIC RESISTANCE WELDED

FCC: FACE CENTERED CUBIC STRUCTURE

FOB: STANDS FOR FREE ON BOARD WHICH MEANS SHIPPER/TRADER PAYS ONLY COSTS UP TO THE SHIP AND INSURANCE COST, BUT FREIGHT CHARGES ARE PAY BY THE BUYER/CONSIGNEE

F&D: FLANGED AND DISH HEAD

HCP: HEXAGONAL CLOSE PACKED STRUCTURE

HEI: HEAT EXCHANGER INSTITUTES

HVAC: HEATING, VENTILATING & AIR CONDITION

ICBO: INTERNATIONAL CONFERENCE OF BUILDING OFFICIALS

ICEA: INSULATED POWER CABLE ENGINEER'S ASSOCIATION

IEEE: INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS

IES: ILLUMINATING ENGINEERS SOCIETY

IPS: IRON PIPE SIZE, INDICATE INTERNAL PIPE DIAMETER IN INCH (EX:IPS6)

ISA: INSTRUMENT SOCIETY OF AMERICA

ISO: INTERNATIONAL STANDARDS ORGANIZATION (ADDRESS : ISO CENTRAL SECRETARIAT, CASE POSTALE 56, CH-1211 GENEVA 20, SWITZERLAND/SUISSE)

MSS: MANUFACTURER'S STANDARDIZATION SOCIETY OF THE VALVES & FITTINGS INDUSTRY (ADDRESS : 1815 N. FORT MYER DRIVE, ARLINGTON, VA 22209 & 127 PARK ST., NORTHEAST, VIENNA, VA 22180)

MAWP: MAXIMUM ALLOWABLE WORKING PRESSURE

MPW: Male Pipe Weld

NEC: NATIONAL ELECTRIC CODE

NEMA: NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION

NIST: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY

NPS: NOMINAL PIPE SIZE, INDICATE INSIDE DIAMETER FOR SIZES LESS THAN 14" & INDICATE OUTSIDE DIAMETER FOR SIZES EQUAL OR MORE THAN 14"

OIA: OIL INSURANCE ASSOCIATION

OSHA: OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION

PN: PRESSION NOMINAL EQUIVALENT OF PRESSURE NOMINAL FOLLOWED BY NUMBER OF BARS

PWHT: POST WELD HEAT TREATMENT

PSI: POUND PER SQUARE INCH

RMS: MEANS ROOT MEAN SQUARE VALUE OF THE ROUGHNESS, THE MEASUREMENT IS ALWAYS IN MICROINCHES

SAMA: SCIENTIFIC APPARATUS MAKERS ASSOCIATION

SBR: STYRENE-BUTADIENE RUBBER.

SDR: STANDARD DIMENSION RATIO RELATES THE OUTSIDE DIAMETER (OD) OF THE DUCT TO ITS WALL THICKNESS (T), SO SDR = OD / T

SJI: STEEL JOINT INSTITUTE

SMLS: SEAMLESS PIPE IS FORMED BY DRAWING A SOLID BILLET OVER A PIERCING ROD TO CREATE THE HOLLOW SHELL

SSPC: STEEL STRUCTURES PAINTNG COUNCIL (ADDRESS : 4400 5TH AVENUE, PITTSBURGH, PA 15213-2683)

TEMA: TUBULAR EXCHANGERS MANUFACTURERS ASSOCIATION

UBC: UNIFORM BUILDING CODE

UL: UNDERWRITERS LABORATORY

Technical

Pipe Supports - Glossary of Terms

A steel Beam Clamp for the suspension of pipe loads from structural beams.

The Load Variation of a Variable Spring Hanger divided by the Hot Load expressed as a percentage.

An uninterrupted covering for an insulated pipe to preclude the introduction of moisture into the insulation.

A U-shaped rod with threaded ends, that fits around a pipe and is attached to a supporting member. (see catalog)

A device attached to a spring unit, whose purpose is to provide for an indication of the vertical pipe movement.

See Restraint Control Device. (see catalog)

A rigid tension/compression member. (see catalog)

A device used to connect the remainder of the Pipe Hanger Assembly to the structure.

A device used to limit pipe movement in a specific direction.

A Pipe Support using a vertical member in compression.

See Spring Sway Brace. (see catalog)

A Pipe Hanger, using a spring or springs, to permit vertical movement in a piping system. (see catalog)

A pair of spring coils with retainers, for use with a Single Pipe Roll.

A simple, non-calibrated, single rod spring support, used for providing a cushioning effect.

A hydraulic, mechanical, or spring device used for the control of shock and sway in piping systems. (see catalog)

A flat plate whose surface has been prepared in a manner which will facilitate a sliding motion. (see catalog)

A horizontal beam, usually located at grade, upon which horizontal pipe runs are supported.

A Pipe Attachment which utilizes a Pipe Roll for axial movement and is used in a Trapeze Hanger or Support.

See Protection Shield.

A welded Pipe Attachment subjected primarily to shear stress, transferring axial pipe load to the supporting member.

See Pipe Covering Protection Saddle. (see catalog)

A flat device which provides a bearing surface for a pipe roll.

A pipe roller and bearing plate used for minimal axial movement where no vertical adjustment is necessary.

A tapped device used to join two threaded rods. (see catalog)

Any vertical portion of a piping system.

A Pipe Support which does not permit vertical movement.

A Pipe Hanger which does not permit vertical movement. (see catalog)

Any device which prevents, resists or limits the free movement of the piping.

See Pipe Covering Protection Saddle. (see catalog)

A device by which piping is carried from beneath and is used to carry the piping weight in compression.

A device consisting of a Pipe Attachment and a Slide Plate, to accommodate horizontal pipe movement.

Normally a Tee section attached to the pipe to transmit the load or forces to the adjacent structure. (see catalog)

A Stanchion utilizing a curved section for cradling the pipe. (see catalog)

A roller device used to support horizontal piping and provide for axial movement. (see catalog)

Temporary loading resulting from a change in the flow rate of the piping contents.

Loading introduced by the restraint of a piping system against thermal expansion or contraction.

Temporary loading associated with the occurrence of an earthquake.

Loading as a result of frictional forces due to sliding surfaces.

The combination of operating and other loads as defined by job specification.

Loading condition which considers only the dead weight of the piping, insulation, and contents.

A device which is suspended from a structure and is used to carry the piping load in tension. (see catalog)

A device used to prevent damage to the insulation at the support point. (see catalog)

A Pipe Attachment used to hold the pipe directly to a structure, also referred to as a strap or pipe strap.

Any device used to connect the pipe to the remainder of the Pipe Hanger Assembly.

A Bracket used for the support of moderate loads.

A unique number used to identify pipe hangers.

A scale attached to a Variable Spring Hanger to provide a means of indicating the supported load.

The load plate or other means used to indicate the reading on the Load Scale of a Variable Spring Hanger.

A scale used on a Constant Support Hanger to indicate the load adjustment.

Material placed between pipe and pipe attachment to protect piping from damage or other undesirable effects.

A Bracket used for the support of light loads.

A diagonal structural member used to transfer load or provide stability.

A non-load bearing metal covering placed around the insulation to protect it against damage.

A female threaded device which locks into position in an Insert and receives a threaded Hanger Rod.

A device, embedded in concrete, to which a Pipe Hanger Assembly can be attached.

See Travel Stop.

A Bracket used for the support of heavy loads.

A device used to permit pipe movement in a predetermined direction while restraining movement in other directions.

A device which provides for the attachment of a threaded Hanger Rod to the bolt of another component.

A Pipe Clamp primarily used on non-insulated piping and provided with a female threaded attachment.

A Pipe Attachment welded to an elbow for the purpose of attaching the remainder of the Pipe Hanger Assembly.

A cast-in-place insert which provides for a rod attachment capable of nominal lateral adjustment.

A device installed in concrete by means of a drilled hole, to which a pipe hanger can be attached.

Any of a range of devices which are used to make up a Pipe Hanger Assembly. (see catalog)

Cantilevered member, with or without a kneebrace, designed to withstand a gravity load and/or horizontal forces.

A Pipe Attachment providing for vertical adjustment, consisting principally of a formed steel strap. (see catalog)

Threaded items used to attach embed plates into concrete on structural supports. (see catalog)

A rigid device used to prevent essentially all pipe rotation and displacement at the point of application.

A rod threaded its full length.

Components which provide for linear adjustability (e.g.) Turn-buckle, Hanger Rod, Nut, and Load Coupling.

Having linear adjustment capability (usually with threads).

Offset:

Guide:

Insert:

Jacket:

Riser:

Liner:

Saddle:

U-Bolt:

Shield:

Stop:

Strut:

Anchor:

Bracket:

Plate Lug:

Deviation:

Eye Rod:

Split Ring:

Insert Nut:

Pipe Roll:

Pipe Clip:

Stanchion:

Pipe Shoe:

Pipe Slide:

Restraint:

Roll Plate:

Sleeper:

Snubber:

Variability:

Kneebrace:

Adjustable:

Slide Plate:

Elbow Lug:

"C" Clamp:

Riser Clamp:

Pipe Hanger:

Cold Setting:

Sway Brace:

Steel Clevis:

Roll Hanger:

Rod Hanger:

Hanger Rod:

Cold Spring:

Yoke U-Bolt:

Component:

Turnbuckle:

Eye Socket:

Shear Lug:

Limit Stop:

Load Scale:

Pipe Clamp:

Roll Stand:

Travel Scale:

Travel Stop:

All Thread Rod:

Vapor Barrier:

Anchor Bolts:

Spider Guide:

Rigid Hanger:

Pipe Support:

Bulk Material:

Band Hanger:

Beam Clamp:

Big Ton Spring:

Clevis Hanger:

Rod Coupling:

Embed Plates:

Roll and Plate:

Rigid Support:

Forged Clevis:

Spring Hanger:

Load Variation:

Load Indicator:

Heavy Bracket:

Mark Number:

Light Bracket:

Load Coupling:

Welding Lug:

Alloy Pipe Clamp:

Channel Clamp:

Top Beam Clamp:

Hydrostatic Lock:

Medium Bracket:

Load Bolt or Pin:

Hydrostatic Test:

Pipe Attachment:

Multiple Support:

Side Beam Clamp:

Protection Saddle:

Protection Shield:

Single Pipe Roll:

Trapeze Hanger:

Sliding Support:

Spring Snubber:

Travel Indicator:

Weldless Eye Nut:

Horizontal Traveler:

Adjustment Device:

Concrete Insert Box:

Center Beam Clamp:

Cold Piston Setting:

Concrete Fastener:

Hot Piston Setting:

Hydraulic Snubber:

Instrument Supports:

Mechanical Snubber:

Pipe Saddle Supports:

Spring Sway Brace:

Side Beam Bracket:

Spring Cushion Roll:

Swivel Turnbuckle:

Constant Support Hanger:

Extension Riser Clamp:

Extension Split Clamp:

Structural Attachment:

Pipe Hanger Hot Load:

Hydrostatic Test Load:

Variable Spring Hanger:

Pipe Hanger Cold Load:

Load Adjustment Scale:

Non-Metallic Wear Pad:

Pipe Hanger Assembly:

Pipe Hanger Design Load:

Spring Cushion Hanger:

Three Bolt Pipe Clamp:

Welded Beam Attachment:

Welded Pipe Attachment:

A type of clamp that includes a u-shaped rod with threaded ends, that fits around a pipe and is recommended for the suspension of high temperature piping. (see catalog)

A forged steel device which provides for the attachment of a threaded Hanger Rod to a bolt or pin connection. (see catalog)

A steel device that is welded to supports or structural steel to allow for the suspension of pipe using rod hangers. (see catalog)

A Pipe Attachment which requires welding to the pipe in order to connect the pipe to the remainder of the Pipe Hanger Assembly.

A u-shaped flat bar device, normally welded to a steel beam used to connect the remainder of a Pipe Hanger Assembly. (see catalog)

A spring coil device which produces a varying supporting effect while permitting vertical pipe movement.(see catalog)

A device with one left-hand female threaded end and one right-hand female threaded end, used to join two threaded rods and provide linear adjustment. (see catalog)

A device which temporarily locks the moveable parts of a Spring Hanger in a fixed position, enabling a load to be transferred through the Spring Hanger to the supporting structure while maintaining the piping at a desired elevation during erection and/or Hydrostatic Testing.

For Constant Support Hangers, a device attached to a moveable arm of a Constant Support Hanger, used to indicate the reading on the Travel Scale in order to show the vertical pipe movement. For Variable Spring Hangers, the spring load plate which indicates the reading on the Load/Travel scale in order to show the vertical pipe movement.

A Pipe Hanger consisting of parallel vertical rods which are suspended from a structure and connected at their lower ends by a horizontal member from which the pipe is supported. Some of its uses are for clearing overhead obstructions or where insufficient vertical space is available to accommodate a single Suspension Hanger. (see catalog)

A Beam Clamp which attaches to the top of a structural beam and provides an attachment to the remainder of the Pipe Hanger Assembly from the side of the beam.

A Pipe Clamp normally used for horizontal insulated piping, which utilizes clamping bolts to attach the clamp to the pipe and a separate Load Bolt to transfer the piping weight to the remainder of the Pipe Hanger Assembly from a point outside the insulation. (see catalog)

A device which provides flexibility at the pipe connection, in addition to linear adjustment for Suspension Hanger.(see catalog)

A forged or fabricated device used to fit over a welding lug in the attachment of a pipe to a structural support. (see catalog)

A spring device used for the control of vibration or shock, or bracing against sway in piping systems. (see catalog)

A Pipe Clamp used on non-insulated piping, provided with a hinge which permits installation before or after the piping is in place.

A Pipe Attachment for insulated piping used for maintaining alignment of piping through its axial expansion and contraction cycles. (see catalog)

A device providing support from beneath by offering no resistance, other than frictional, to horizontal movement.

A Beam Clamp that attaches to a flange of an I-beam or wide flange beam and provides an off-center attachment for the remainder of a Pipe Hanger Assembly. (see catalog)

A Bracket provided with a hole in the vertical leg for bolting to the building structure and a hole in the horizontal leg to receive a threaded Hanger Rod.

A Pipe Hanger Assembly which has been indicated on a piping drawing and has been designated as a specific type; i.e. rigid, spring, etc. with Spring Hangers indicating load, movement, spring type and size. This hanger assembly is field fabricated utilizing Bulk Material where applicable.

A Pipe Attachment which utilizes a pipe roller for axial movement and is used in a Suspension Hanger. (see catalog)

A pipe roller mounted in a stand, used to support horizontal piping from beneath and providing for axial movement. (see catalog)

An adjustable vertical assembly consisting of a Structural Attachment, Hanger Rod (with or without intermediate components), and Pipe Attachments. (see catalog)

A Pipe Clamp for the support of vertical piping having separate Load Bolts, to transfer the piping load to the remainder of the Pipe Hanger Assembly. (see catalog)

Any hydraulic, mechanical, spring, or rigid device used for the control of shock and sway in piping systems.

A metal shield used to maintain the integrity of the Vapor Barrier and/or protect the insulation at support locations.(see catalog)

An attachment welded to a structural member or piping, to provide for a pinned or bolted connection to the remainder of a Pipe Hanger Assembly.

Operating load on a Variable Spring Hanger (normally represents deadweight under operating conditions.)

An additional force that may occur at a support point as a result of the Cold Spring of a piping system.

Loading at ambient temperature, resulting from the use of Variable Spring Hangers in the support of a piping system. The cold load equals the operating load plus or minus the Load Variation.

A general term used to describe a series of assembled components which make up a Pipe Hanger, Pipe Support, Restraint, Anchor, Guide, etc.

A bolted Pipe Attachment which clamps around the pipe to connect the pipe to the remainder of a Pipe Hanger Assembly. (see catalog)

A relative displacement between the Structural Attachment and Pipe Attachment, which may be incorporated into the design of the Pipe Hanger Assembly to accommodate the piping movement.

A sacrificial plate used to prevent damage to the pipe by absorbing the frictional load caused by the movement of pipe on structural steel. (see catalog)

A Pipe Hanger Assembly consisting of a common cross member used to support parallel run or banks of piping.

A mechanical device used for the control of shock or sway in piping systems, while allowing for normal thermal expansion. (see catalog)

A term associated with Variable Spring Hangers used to describe the difference in supporting effect between the hot and cold elevations of the support point.

An Adjustment Device used to connect the Hanger Rod to a Variable Spring Hanger or Constant Support Hanger.

A bolt or pin which is used to support the weight being carried by the Pipe Hanger Assembly; e.g. the top pin or bolt in a Three Bolt Pipe Clamp.

An internal device built into a Variable Spring or Constant Support Hanger to prevent the overstressing of the spring coil, over-travel, or release of the load.

Devices fabricated from small bore piping used to support process instrumentation such as temperature sensors, flow meters, etc. (see catalog)

A temporary loading condition consisting of a total of the gravitational piping, insulation and test fluid weights for piping systems subjected to hydrostatic tests.

A pre-operational test, whereby the piping system is subjected to a pressurized fluid test in excess of the operational pressure to assure the integrity of the system.

A hydraulic cylinder or rotating vane device used for the control of shock or sway in piping systems, while allowing for normal thermal expansion. (see catalog)

The position at which the piston on a Hydraulic Snubber should be with the piping in the hot or operating position.

Any device which will permit the upper end of a Pipe Hanger to move in a manner which will accommodate horizontal piping.

Round steel bar normally threaded used to connect other components, to make up a Pipe Hanger Assembly. (see catalog)

A device which provides for the attachment of a threaded Hanger rod to a bolted or pinned connection. (see catalog)

A Hanger Rod having an end formed in a circular or pear shape, permitting attachment to other components by means of a bolt or pin. The eye may be forged, welded or non-welded. (see catalog)

A Pipe Clamp for the support of vertical piping, whose ears have been extended to permit the transfer of the piping load to a bearing surface upon which the ears of the clamp will rest.

Steel plates sunk into concrete piers used to provide structural support for pipe racks, pipe supports, etc. (see catalog)

A term used to describe the accuracy of a Constant Support Hanger which is a measure of the maximum difference between the actual and specified supporting effect, through its travel cycle, expressed as a percentage.

A mechanical and spring coil device which produces a relatively constant supporting effect, while permitting vertical pipe movement. (see catalog)

Pipe Hanger Assembly which has been designed, detailed and provided with a complete bill of material.

The act of pre-stressing a piping system during installation in order that the equipment reactions will be lower in the operating condition. This pre-stress is accomplished by the proper closure of the Cut Short gaps.

The position at which a Spring Hanger or Mechanical Snubber indicator is set denoting the proper installation setting of the unit with the piping in the cold position.

An indicated piston position on a Hydraulic Snubber, denoting proper installation setting of the unit with the piping in the cold position.

A Pipe Attachment providing vertical adjustment, consisting of a clevis type top bolted to a formed steel bottom strap.(see catalog)

A Side Beam Clamp with channel adapter and hook rod, which attaches to the bottom flange of a channel beam and provides a connection for the remainder of the Pipe Hanger Assembly. (see catalog)

A jaw type Beam Clamp for use with I-beams and wide flange beams which provides a centered beam connection for the remainder of the Pipe Hanger Assembly. (see catalog)

"C" shaped Beam Clamp which attaches to a flange of a structural member and provides for attaching a threaded rod.

Material which has been packaged in a manner in which identical items are grouped together and are identified only by quantity, size and/or manufacturer's figure number.

A multi-spring coil device that lends itself to supporting very high loads and providing a great amount of stability (see catalog)

A type of forged or fabricated clamp that is used to attach rod hangers to beams by clamping onto the load flange. (see catalog)

A Pipe Clamp made from low chrome-moly (less than 5% chrome) materials for the purpose of resisting the effects of piping temperatures in the 750 degree F. to 1,100 degree F range. (see catalog)

Completely Engineered Hanger Assembly:

Pipe Covering Protection Saddle:

Pipe Hanger Deadweight Load:

Pipe Hanger Cold Spring Load:

Pipe Hanger Friction Load:

Pipe Hanger Seismic Load:

Pipe Hanger Thermal Load:

Pipe Hanger Water Hammer Load:

Restraining Control Device:

Semi-Engineered Hanger Assembly:

Wide Flange Beam Clamp with Links:

Pipe Supports