expansion joint requirements

Expansion Joints: Where, When and How

an expansion joint is required at a given location, or locations within a structure. Requirements of expansion joints as they pertain to commercial, industrial, and long span structures are discussed. Area dividers as provided in roof membranes to control the effects of thermal loads for roofing are not discussed, as they are

What Are the Basics of Applying Expansion Joints? | Pumps ...

Dec 17, 2011 · The primary functions of elastomeric expansion joints include absorbing all directional thermal movements and reducing noise and vibration.


EJMA Standards: The Authority on Expansion Joints The EJMA Standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type expansion joints for safe and reliable piping and vessel installation. The Tenth Edition standards combine the knowledge and experience...

Guidelines for dealing with dimensional changes in ...

expansion joints where required. The report recommends a maximum allowable building length without the use of an expansion joint in terms of design temperature change and building material. Figure 1 was developed considering beam and column construction, hinged column bases, and heated interiors. If actual conditions differ from those assumed con-

Types of Concrete Joints and Placing Tips

The following recommended tips should be observed:Maximum Joint Spacing should be 24 to 36 times the thickness of the slab.

Expansion Joints ADA and Spiked Heels -- Where do you ...

Expansion Joints, Ada, and Spiked Heels — Where Do You Stand?

Expansion Joints - The Tile Council of North America

The TCNA Handbook recommends allowing for expansion and contraction in every tile installation. In small rooms, a gap at the perimeter of the room (often hidden by baseboard or shoe molding) is sufficient. For larger areas, the movement joints will be visible.

Placing Joints in Concrete Flatwork- Why, How, and When

Joints are commonly spaced at distances equal to 24 to 30 times the slab thickness. Joint spacing that is greater than 15 feet require the use of load transfer devices (dowels or diamond plates). Figure 1a: Joint Spacing in Meters. Figure 1b: Joint Spacing in Feet Contraction joints may be tooled into the surface at the time of placement.


The Expansion Joint Manufacturers Association, Inc. is an organization of established manufacturers of metal bellows type expansion joints. EJMA was founded in 1955 to establish and maintain quality design and manufacturing standards.

When are expansion fittings required? - ECN Electrical Forums

May 31, 2004 · I agree thermal expansion is a separate issue but using an expansion joint is a common method around this area to comply with 300.5(J). Bob [This message has been edited by iwire (edited 05-31-2004).]

Why Are Expansion Joints Needed In Tile and Stone ...

Perimeter expansion joints are required on all installations to allow free movement at the perimeter of the installation. Generally, a perimeter movement joint is a minimum of ¼” (6mm) in width. Dissimilar building materials can precipitate even faster rates of expansion and can encroach upon the tile and stone installation.

Expansion Joints - an overview | ScienceDirect Topics

The most common type of expansion joint used in pressure vessels is bellows expansion joints. These joints are normally thin-walled, with a normal minimum wall of 1/16″ (1.5 mm). When these devices are used, there should be a contingency plan for accessing them when they fail.

Tech Talk: Control Joints – Masonry Magazine

Like expansion joints, the primary number to remember is 25 feet (Figure 1). However, the industry standard also recommends a limit on the aspect ratio (length between joints to height ratio) of 1 ½ to 1.

Expansion Joint | Structural-Int'l Bldg and Resid'l Codes ...

Sep 06, 2007 · I''ve seen 30# felt specified in this application rather than expansion joint material. The rationale was the same as Dave''s -- it''s purely a bond breaker, and there''s no reason to anticipate slab expansion.

Drywall Expansion Joints: Use drywall control joints or ...

The required joint width between the abutting drywall panels ranges depending on the specifications of the drywall expansion control strip's manufacturer, typically somewhere between 1/4" and 1" in width. Coefficient of expansion of drywall due to temperature variation: 0.0162

ACI 224.3R-95 Joints in Concrete Construction

requirements for expansion joints. It is hoped that, by bring-ing the information together in this Committee Report, rec- ... out any restraint as expansion joints. 1.3—Movement and restraint in structures. Restrained movement is a major cause of cracking in con-

The Dos and Don’ts of Specifying Expansion Joints in a ...

Nov 30, 2015 · Why Use Joints? Because Structures Want to Move! Expansion joints are separations between structures, simply gaps, to allow them to move and reduce stresses that may occur. Often, these gaps are filled with an Expansion Joint System to fill in the void to ensure walkability, a complete building enclosure, waterproofing, and general serviceability of the structure. …

Expansion Joint Covers - Fire & Vapor Barriers

The CS Expansion Joint Cover team worked closely with HNTB to create a unique system of stair risers and treads to ensure that fans, students and athletes would be safe in the event of a seismic event. This distinctive project required careful consideration of the location of the cover.


exist. At a location where an expansion joint is designed, the expansion joint and the correct trim accessory shall be located in the same location on each side of the wall assembly. ½” (13mm) max. gap Runs greater than 30 feet in length require a control joint Framing members Runs less than 30 feet in length do not require a control joint

Specifying movement joints and sealants for tile and stone ...

Oct 01, 2013 · When there is a tile or stone failure, a contributing factor is often the lack of properly installed movement joints. Just like sidewalks and bridges, tile and stone need to have movement joints to control the anticipated movements within a structure.

Avoid Cracked Plaster by Using Stucco Control Joints

Generally, joint spacing should meet these criteria: Joint spacing should not be greater than 18 feet. No panel should exceed 144 sq. ft. on vertical applications. No panel should exceed 100 sq. ft. over curved or angular sections.

EIFS Expansion Joints and Sealants FAQs | EIMA

How wide should expansion joints be when installed with the EIFS? This issue is the responsibility of the design professional. Can a "V" groove reveal be considered a joint?

5 Steps to Expansion Joint Cover Specification Perfection

Understand the movement requirements. The most important part of selecting the proper …

Accommodating Expansion of Brickwork

joints in buildings that may be needed include control joints, building expansion joints and construction joints. Each of these is designed to perform a specific task, …

Determining the number of expansion joints in PVC ...

Apr 28, 2014 · To determine how far you can run a length of PVC without needed a expansion joint the formula is: Length of run = (Max amount of expansion (45)) / Temp difference X 0.0520 Here is an example they give in the code book:

Ceilings for Seismic Design | Armstrong Ceiling Solutions ...

Armstrong Ceiling and Wall Solutions is the industry leader in seismically tested ceiling, wall, and suspension systems so you can design and install with confidence.

300.7(B) Expansion, Expansion-Deflection, and Deflection ...

Some are listed for expansion and contraction only while others may be suitable for expansion and deflection or deflection only. Below is a preview of Article 300. See the actual NEC text at NFPA.ORG for the complete code section.

ACI Control Joints Topic

Mar 31, 2019 · Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in ...

joints, structural TopicJan 01, 2020joint spacing TopicNov 01, 2019joints, movement in TopicNov 01, 2010Joints, Movement TopicNov 01, 2010See more results

5 Steps to Expansion Joint Cover Specification Perfection

Once the movement requirements are understood, the joints can be sized properly to accommodate the expansion joint covers. Most joint covers have components that take up space in the joint opening, and fire rated floor and wall conditions will require a fire barrier, it’s important to remember that these materials will not allow a joint to close to 0mm without damaging the system or surrounding construction.

How Often Do You Need Expansion Joints in Concrete ...

Usually, expansion joints should be no farther apart than 2 to 3 times (in feet) the total width of the (in inches). So for a 4 inch thick slab, expansion joints should be no more than 8 to 12 feet apart. They should also be placed around structures that go deeper than the slab, such as columns or walls.

Expansion Joints - Installation & Maintenance Guide ...

Pipe Expansion Joints: Do’s and Don’ts From the “Standards of the Expansion Joint Manufacturers Association, Inc”. Do’s. Dont’s. Inspect for damage during shipment, i.e., dents, broken hardware, …

Expansion and Control Joints | AWCI's Construction ...

Control (expansion construction) joint, n—a designed separation in the system materials that allows for movement caused by expansion or contraction of the system. The construction of the separation is accomplished by one of the following methods: (1) manufactured devices suitable for this application, or (2) by field fabrication of suitable materials.

Expansion Joint Required | Mike Holt's Forum

Sep 06, 2015 · I agree that you do not need an expansion joint because of thermal expansion and contraction in this application. You do, however, have to comply with the section I cited. With a conduit system both above and below grade, an expansion joint is the only method of compliance that I …


In the event that expansion joint(s) are approved for use on a new bridge structure, they must meet the following requirements: Size joints to meet the thermal, live …

electrical - When is an expansion joint required for PVC ...

The climate is zone 4 in the northern part of Georgia. Temperature fluctuation might be as much as 90 degrees F throughout the year. Do I need (code requirement) or should I have (good practice) an expansion joint on the vertical rise? If it was cheap I'd just do it it, but it looks like a $55 part.

300.7(B) Expansion, Expansion-Deflection, and Deflection ...

Movement can occur for any type of raceway. Many people have no idea that expansion fittings may be needed on more than just PVC raceways. As well, section 300.4(H) has additional requirements for using expansion/deflection fittings for a raceway crossing a structural joint in buildings, bridges, parking garages, or other structures.

Expansion Joints for PVC Rigid Nonmetallic Conduit

Expansion joints are usually used where the straight run length is greater than 25 feet and expected temperature change is greater than 60°F. Rigid PVC conduit has a coefficient of expansion of 3.38 x 10-5 in./in./°F. A 10 foot length will change in length about 3/8" with a change in temperature of 100°F.

Building Expansion Joint Sizing - Structural engineering ...

I was curious how most are sizing building expansion joint widths in seismic design category A, B and C buildings. Are you sizing it for thermal movement, ampl

Placing Control Joints in Concrete - The Concrete Network

Tips for placing control joints in slabs including information about depth, proper spacing, corners, and more.

Safety Recommendations for Expansion Joints - U.S. …

Piping Technology highly recommends that our customers thoroughly understand the uniqueness of pipe expansion joints and their application. The following safety recommendations are paraphrased from the Fifth Edition of The Standards of the Expansion Joint Manufacturers Association, 1980.. SAFETY RECOMMENDATIONS FOR PIPING SYSTEMS CONTAINING BELLOWS EXPANSION JOINTS


When Grade is not specified, the requirements of Grade SW shall govern. * The saturation coefficient is the ratio of absorption by the 24-h submersion in cold water to that after 5-h submersion in boiling water


DESIGN REQUIREMENTS General 1. The expansion joint shall be able to handle the axial, lateral, angular or rotational movements or a combination of one or more above, at all operating conditions. 2. Expansion joint for connecting the reciprocating or pulsating machinery shall be able to absorb equipment vibration and vibration and the mechanical

Gypsum Construction Handbook - USG

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EXPANSION CONTROL 079500 - 4 F. Compression Seals: ASTM D2000; preformed rectangular elastomeric extrusions having internal baffle system and designed to function under compression.

Technical Notes

3B Brick Masonry Section Properties. This Technical Notes is a design aid for the Building Code Requirements for Masonry Structures (ACI 530/ASCE 5/TMS 402-92) and Specifications for Masonry Structures (ACI 530.1/ASCE 6/TMS 602-92).

Stucco Installation, Procedures and Guidelines

 Control joints (expansion and contraction) shall be installed in walls to delineate areas not more than 144 sq. ft. on vertical surfaces and 100 sq. ft. on horizontal surfaces. The distance between control joints shall not exceed 18 feet, in either direction, or exceed length- to-width ratio of 2-1/2 to 1.

ACI Control Joints Topic

Mar 31, 2019 · Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in design, construction, and materials, …

Expansion Joint Design Criteria - Latham Australia

The distance between adjacent expansion joints and the dimensions of the individual joints must be such that any movements occurring do not exceed 16% or 20% of the joint width. However these limiting values rarely occur in properly detailed and well-installed floor systems, for commonly recommended maximum bay sizes are safely conservative.

Masonry Movement Joint Failures

With expansive clay bricks on both sides of an expansion joint, these joints should be installed ½-inch wide to let them reduce down to 3/8-inch to match typical mortar joints width. Unlike, control joints, expansion joints need to be clear of mortar droppings and be adequately sized to allow the joint to compress without over-stressing the back rod, joint filler strips, or creating pressure points on the brick.

Movement Joint Profiles | Profiles | schluter

Schluter-Systems’ prefabricated movement joint profiles protect tile edges prevent sound bridges and surface water penetration. Maintenance-free installation.

Technical Document Seismic Technical Guide

4 Seismic Separation Joints Seismic Expansion Joint Lateral Force Bracing Adjacent Expansion Joint Sample layout field cut main tee on pages 9 and 10. Symbol: Seismic Expansion Joint

Joint Requirements of PB EIFS - AWCI

new horizontal expansion joint which incorporates a backer rod and sealant. This allows for further move-ment and relaxation of built-in deformation of the PB EIFS. The new joint must be designed and constructed inaccordance with the PB EIFS and sealant manufactur-ers’ details and requirements. In some cases the wall


PDF | Although buildings are often constructed using flexible materials, roof and structural expansion joints are required when plan dimensions are... | Find, read and cite all the research you ...

Expansion Fittings for PVC Rigid Nonmetallic Conduit

Generally, expansion fittings are not required inside unless conduit is located in an area of widely varying temperatures. Attics of buildings are areas where temperature swings exce eding 100°F are common and expansion fittings are required.

Bridge Expansion Joints · EMSEAL - Bridge Division

This concise guide is an indispensable tool to become familiar with the Bridge Expansion Joint System. Request Information Guide Today! EMSEAL JOINT SYSTEMS LTD.

Standard expansion joints - kompaflex

Standard expansion joints. In addition to customised expansion joint solutions, kompaflex ag offers an extensive variety of standard expansion joints (see product catalogue).Expansion joints ranging from a diameter of 15 millimeters up to 12 meters according to common standards.

XJG Conduit Expansion Couplings | Crouse-Hinds series | Eaton

XJG conduit expansion couplings for EMT and rigid/IMC are used with EMT, rigid metal conduit and IMC to couple together two sections of conduit subject to longitudinal movement. They are installed indoors or outdoors in long conduit runs to permit linear movement caused by thermal expansion and contraction to prevent damage to conduit supports and electrical systems in building or bridges.