Install a commercial expansion joint to absorb the 1. You can also find technical information as a pdf download at. Longitudinal deck expansion joints should be avoided for bridge widths under 100. They are designed to accommodate movements both perpendicular and parallel to the centreline of the joint. Expansion joint and bellows keywords and definitions as adopted from the ninth. Expansion joint detail with different conditions autocad. Two hinged expansion joints in a straight pipe run will permit lateral deflection of the pipe, just as a universal expansion joint will. Designing with expansion joints 8 pressure thrust for a bellows type expansion joint, the pressure. X joint eps2 39 high movement seismic waterproofing expansion joints to be used behind joint cover plates. Below, we have compiled types of expansion joints offered at holz rubber.
In all cases where such are likely to occur, control units must be used to restrain the piping system. An acceptable radial gap between equalizingreinforcing rings and the root of convolutionbellows tangent is introduced to section 6. Learn vocabulary, terms, and more with flashcards, games, and other study tools. This profile illustrates alternative approaches to their placement.
Improper selection and application will lead to problems in the field causing down time and system problems. The only dierence is that the thermal as a single expansion joint is the least costly option, it is normally the. Duraflex metal profiles with an epdm expansion zone are made for particularly highly stressed floors. Example of construction joint demaged after a few months of life fig. Design modifications are provided to ensure proper working of the expansion joint. The brochure explains why expansion joint fillers are needed in construction, and lists the many different products w. The control rod assemblies are set at the maximum allowable. Expansion joint selection guide the proper selection and application of an expansion joint is the determining factor in its operation and life. Installation and sevicing instructions for fabric expansion. Enquiries annex a requirements for departmental type approval of bridge deck expansion joints. It is a closed cell extruded polypropylene foam th. Designing with expansion joints 7 pressure thrust ejma which types of expansion joints have this problem.
Expansion joints are the gaps put in structures to accommodate the relative movement caused as a result of expansion, contraction or caused by tremors which could damage the entire structure. To accommodate differential lateral movement, elastomeric bearings or combination bearings with. B6 guardian 306 ezflo garlock guardian 306 ezflo spooltype expansion joints feature an fep lining that is fused to the body of the expansion joint. The specially developed expansion joint profile absorbs heavy stresses and spreads them evenly throughout the flooring and the foundations. Acknowledgement this book was produced under the guidance of vulcraft managers and engineers.
Thermal expansion of the carrier pipe during operation is therefore. Expansion joints for use in highway bridge decks contents chapter 1. A practical guide to expansion joints cern document server. An expansion joint is an assembly designed to safely absorb the heatinduced expansion and contraction of various construction materials. It also prevents transmission of footfall and sounds from other objects. This is a high quality standard rubber expansion joint, of spherically moulded. Expansion joint and sealant cad details are provided here in quickview.
The joint profiles are normally designed to follow the contour of the structure, i. This product is designed for the chemical processing and. Coordinate installation of exterior wall joint systems with roof expansion assemblies to ensure that wall transitions are watertight. B 221, alloy 6005aastmt61, 6063t5, 6061t5, 6105t5 for extrusions. Depending on your application, our expansion joints are manufactured to meet certain criteria, such as media moving through the joint, pressure and temperature within the system, and life expectancy.
Joint design for reinforced concrete buildings this report discusses construction, contraction and expansion joints in reinforced concrete buildings. Rubber expansion joints are not designed to take end thrusts. Control joints for concrete masonry walls alternative engineered method tek 103 movement control 2003 keywords. X joint eps hm 38 high movement seismic waterproofing expansion joints for use in vertical and horizontal applications such as walls and slabs. Kemasterflex rubber expansion joints for liquids and gases.
Expansion joint examples using hinged or gimbal expansion joints. Design requirements and longitudinal deck expansion joints. Anybody can make an expansion joint appear watertight in crosssection. The report addresses the purpose of each type of joint and emphasizes the selection of joint locations and joint spacings. When selecting an expansion joint, these important factors should be considered.
Then, place the floating flanges or attachmentstrips and fit them together with the expansion joint against the mating flanges by using screwclamps. Expansion joint design should permit uninterrupted relative motion of the abutting building segments, prevent the entrance of water or debris, and allow for easy inspection and maintenance. The authors wish to thank those vulcraft personnel involved for. Another common example of motion indicators is found on slotted hinge.
Steel bridges use ltype abutments with expansion joints at the ends for multiplespan bridges. This brochure covers our broad line of expansion joint materials, which w. Dec 04, 2009 we use your linkedin profile and activity data to personalize ads and to show you more relevant ads. Semiintegral construction may be used in lieu of expansion joints for single span bridges under 300 feet with the approval of the bridge design engineer. Typical detail of expansion joint with different conditions like floor to floor, wall to wall, ceiling to ceiling, floor to wall, wall to parapet, roof to roof etc.
A holz representative will work with you to determine the best solution. An expansion joint is a device used to relieve stresses in pipingducting systems, vessels andor chutes by absorbing dimensional changes in single andor multiple planes, which are caused by thermal expansion and vibration. Expansion joint profiles and movement joint profiles. However, the axial thermal growth will not be absorbed within the pipe expansion joints. Expansion joint selection this kind of tied lateral expansion joint is used in a similar way to that of two gimbals. Flexicraft industries expansion joints and all flexible. Honel single seal expansion joints are suitable for concrete, steel, and composite bridges. Silspec ses expansion joint seal installation guide section 3 correctly size the joint seal make sure you have the correct size material for the joint.
Modular joints should only be considered where the anticipated total expansion movement exceeds 5 in. The various types of expansion joints for examples see figs. Guidelines for dealing with dimensional changes in. All buildings are subjected to expansion and contraction due to the thermal loads from exposure to changes in the ambient temperature, both during construction and in operation. The calculation of universal type expansion joints has been simplified by a modified equation for the axial movement per convolution. While accommodating movement, joint materials used to fill wall expansion joints must restore the intended functions of the facade and structural building elements. The fatigue life expectancy of an expansion joint is affected by various factors such as. Emseals track record of successfully completed projects is equally attributable to its approach to expansion joint treatment. A reinforced concrete box girder bridge has a total length of 200 feet. The opening of tooth expansion joints may be larger than 4. Meadows is proud to offer our new, updated concrete expansion joints brochure. Designing with expansion joints becht engineering company, inc. Request sample or literature products from simple, smallmovement joint seals to stateoftheart large movement, seismiccapable joint systems, wba has the expertise to meet your project needs. Measure the joint width at the deck surface and below to ensure the joint faces are parallel.
Bridge expansion joints the texas department of transportation. Flexicraft industries manufactures all types of metal expansion joints, rubber expansion joints, and other expansion joints for piping, as well as other related flexible piping. Nomaflex polypropylene joint filler nomaflex is a performance engineered foam that sets a new standard for the protection of concrete expansion and contraction joints. This structural opening bisects not only the facade but the structural building elements as well. Ndot only uses modular expansion joints where large movements are anticipated. However, joints leak at changes in plane, direction and where dissimilar joint materials meet. Material has been supplied to suit your joint widths at mean temperature based on field. There are a few points to keep in mind while reading this profile. They are commonly found between sections of slabs, bridges. Preformed waterproofing expansion joint seals for use in mechanical expansion joints. Types of expansion joints single arch, multiple arch. Design the kemasterflex rubber expansion joints are available in two types.
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