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05810

EXPANSION JOINT COVER ASSEMBLIES

(INTERIOR FLOOR AND WALL APPLICATIONS)
(MANUFACTURER’S GENERIC GUIDE SPECIFICATIONS – PERFORMANCE BASED)
 

PART 1.  General

1.1           GENERAL REQUIREMENTS
1.1.1       Conform to sections of Division 1 as applicable.

1.2           RELATED WORK
1.2.1       Section 03300 – Cast – in – place concrete
1.2.2       Section 04050 – Masonry procedures
1.2.3       Section 07900 – Sealants
1.2.4        Reserved for other related sections
1.2.5        Reserved for other related sections
1.2.6        Reserved for other related sections

1.3           SUBMITTALS
1.3          Submit manufacturer’s product technical data showing relevant performance criteria.
1.3.1       Submit manufacturer’s installation instructions.
1.3.2       Submit shop drawings showing profile dimensions, splicing details, joinery details with other systems, special end conditions, fasteners, adhesives and relationships to adjoining work prior to shipment of materials to the site.
1.3.3        Samples of profiles, colors and materials for each joint cover assembly for approval before used on site.
1.3.4       Submit manufacturers warranty letters as per general requirements of the contract.

 1.4                QUALITY ASSURANCE
1.4.1       Obtain expansion joint cover assemblies from one source (from a single manufacturer) whenever possible to avoid any compatibility issues.
1.4.2       In addition to requirements of project specifications, comply with manufacturer’s instructions and recommendations for all phases of work, including preparation of substrate, applying materials, and protection of installed units.
1.4.3       Obtain a letter from the manufacturer certifying that product selection, preparation and placement of the expansion joint system is in accordance with manufacturer’s requirements.
1.4.4       Defects or deficiencies include adhesive and cohesive failures, system’s inability to accommodate specified movements, moisture penetration in case of watertight applications, inability to withstand loading and traffic requirements, cracking of nosing/ filler materials due to aggregate loading, not conforming to specified geometries, and improper workmanship.
1.4.5       Defects and deficiencies are to be corrected by the expansion joint installer at no cost to the owner during the period of manufacturer’s warranty.
1.4.6       Products shall be installed either by manufacturers licensed applicators, approved installers or after installation training from the manufacturer.
1.4.7       Materials and work should conform to all applicable codes and requirements of local authorities having jurisdiction.
1.4.8       Where indicated, install fire barriers, before the installation of expansion joints.
1.4.9       Install fire assemblies if required from one source (from a single manufacturer) and not necessarily from the expansion joint manufacturer to avoid compatibility issues in areas requiring fire barriers only and no expansion joint assemblies. 

1.5          ENVIRONMENTAL CONDITIONS
1.5.1       Do not install products at temperatures less or more than published in manufacturer’s product data.
1.5.2       Do not install products without prior approval in damp or wet substrates.
1.5.3       Do not install products without prior approval that might come in contact with aggressive media during the construction process.

1.6          REFERENCES
1.6.1       Reserved.
1.6.2       ASTM – D2240 – 97, Durometer hardness in rubbers.
1.6.3       Reserved
1.6.4       Reserved
1.6.5       ASTM – D3574, Flexible Cellular Materials - Slab, Bonded, and Molded Urethane Foams - Compression Force Deflection
1.6.6       Reserved

1.7          DELIVERY, STORAGE AND HANDLING
1.7.1       Exercise proper care in handling of all work so as not to harm the finished surface, and take proper precautions to protect the work from damage after it is in place.
1.7.2       Store materials under cover in a dry and clean location off the ground.
1.7.3       Store adhesives, epoxies and resins at room temperature.
1.7.4       Remove materials that are damaged or otherwise not suitable for installation and replace with acceptable materials before handing over the completed work to the site authorities.
1.7.5       Installed assemblies should be identical to submitted and reviewed shop drawings, samples and certificates.

PART 2.  Materials and Products

2.1           MATERIALS
2.1.1        Aluminum and steel alloys and extrusions should be treated and finished to suit project requirements.
2.1.2       Rubber inserts should be ADA compliant and capable of withstanding design temperatures, design loads and design movements. Rubber inserts should be heat weldable when necessary to create watertight transitions.
2.1.3       Nosing materials, when required by application, should conform to required elastomeric properties maintaining 1:2 resins to aggregate ratio.
2.1.4       Preformed sealants and rubber products required to accommodate movements and maintain memory should not experience compression set beyond desirable limits as mentioned in ASTM standards given in 1.6 - section references.
2.1.5       Profile design and shape should be ADA compliant and capable of withstanding design loads and provide structural separation and movement without disturbing the integrity of adjacent substrates.
2.1.6       Fasteners or adhesive materials should not contaminate the substrate, create undue stresses at joint edges or compromise the functionality of adjacent materials and substrates.
2.1.7       Reserved

 2.2           FABRICATION
2.2.1        Fabricate expansion joint covers, square, true, straight and accurate to required joint sizes and profile dimensions.
2.2.2        Fabricate lengths in continuous runs of at least 3.28 LF (2.00LM) for precompressed sealants, at least 9.86 LF (3.00LM) for metal parts and at least 65.6 LF (20.00LM) for rubber parts.
2.2.3        Assemble systems in shops wherever practicable.
2.2.4        Make available to the installer all necessary tools, mixing equipment and welding equipment to ensure proper installation.
2.2.5        Fabricate and supply all necessary accessories to suit the application and to deliver required performance.
2.2.6       Provide isolation coatings, rust inhibitive paints or dielectric separators where aluminum components will be in contact with concrete, masonry or dissimilar materials.
2.2.7       Fabricate and make available all profiles for flat and corner installations.
2.2.8       Reserved

2.3           PRODUCTS
2.3.1       Expansion joint assemblies installed in interior spaces should be able to accommodate a total movement of 33% of the specified joint width. Assemblies should be able to accommodate movements in three directions under specified loading.

2.3.2       Expansion joint assemblies installed in exterior spaces should be able to accommodate a total movement of 50% of the specified joint width. Assemblies should be able to accommodate movements in three directions under specified loading.

2.3.3       Interior floors with pedestrian traffic only
Basis of Design:  EMSEAL MIGUA FP series.

                Expansion joint assemblies to bridge XXmm wide joint gaps comprising of L-shaped metallic anchorage units (rails) installed on both sides of the gap and a flexible rubber insert bridging the gap. The anchorage units should have perforations and are tapped down into a wet hi-mod gel epoxy-mortar setting (leveling) bed until the top surface of the joint is at the desired elevation relative to the finished/ wear-course level (i.e. flush with the finished floor level). Check that sufficient height between the top of the structural slab (or curb cast onto and pinned into the structural slab) and finished elevation of the topping/ floor finish exists to accommodate the specific model height being installed. There should be enough room to accommodate the height of the profile plus a minimum of ¼” (6mm)  thickness for the wet setting bed. After the setting bed epoxy has cured, the system is fastened on both sides with the help of chemical anchoring as per manufacturer’s recommendations. Flooring materials and finishes are laid on both sides flush with the top of the expansion joint systems. The top of the expansion joint rails can be used as a guide for installing floor finishes. Profile should be capable of withstanding loads from occasional vehicular traffic.

2.3.4       Interior floors with pedestrian traffic and exposure to (static/ dynamic) point loads:
Basis of Design: EMSEAL MIGUTRANS FS series.

                All metal expansion joint assemblies to bridge XXmm wide joint gaps comprising of L-shaped metallic anchorage units (rails) installed on both sides of the gap and an articulated telescopic two-piece male/female interlocking metallic unit bridging the gap. The bridging unit shall be an interlocking system of heavy-duty aluminum extrusions capable of accepting 3-dimensional movement including vertical differential deflection during load transfer and capable of handling heavy equipment including small trucks, fork lifts, and maintenance equipment.  The articulated moving surfaces as well as the hinged interface between retainer legs and articulated bridging sections shall be gasketed with extruded rubber seals to reduce dirt accumulation.  Expansion joint assembly shall be supplied factory pre-set at the midpoint of its movement capability and held at this dimension by means of a factory-installed spacer secured to the retainer-leg mounting flanges on each side of the articulated bridging unit. The profile shall have been determined capable of the expected wheel loading by the specifier having compared expected loads to load capacities made available as part of manufacturer’s product data.  The traffic surface shall be ribbed for skid resistance. The perforated mounting flanges will be tapped down into a wet hi-mod gel epoxy-mortar setting (leveling) bed until the top surface of the joint is at the desired elevation relative to the finished/ wear-course level (i.e. flush with the finished floor level). Check that sufficient height between the top of the structural slab (or curb cast onto and pinned into the structural slab) and finished elevation of the topping/ floor finish exists to accommodate the specific model height being installed. There should be enough room to accommodate the height of the profile plus a minimum of ¼” (6mm) thickness for the wet setting bed. After the setting bed epoxy has cured, the system is fastened on both sides with the help of chemical anchoring as per manufacturer’s recommendations. Flooring materials and finishes are laid on both sides flush with the top of the expansion joint systems. The top of the expansion joint rails can be used as a guide for installing floor finishes.

2.3.5       Interior floors with pedestrian traffic and possible seismic movements:
Basis of Design: EMSEAL Migua FSC series.

                Expansion joint assemblies to bridge XXmm wide joint gaps comprising of L-shaped metallic anchorage units (rails) installed on both sides of the gap and a metallic bridging unit attached to the anchorage units on both sides with the help of rubber inserts. The anchorage units are tapped down into a wet hi-mod gel epoxy-mortar setting (leveling) bed until the top surface of the joint is at the desired elevation relative to the finished/ wear-course level (i.e. flush with the finished floor level). Check that sufficient height between the top of the structural slab (or curb cast onto and pinned into the structural slab) and finished elevation of the topping/ floor finish exists to accommodate the specific model height being installed. There should be enough room to accommodate the height of the profile plus a minimum of ¼” (6mm)  thickness for the wet setting bed. After the setting bed epoxy has cured, the system is fastened on both sides with the help of chemical anchoring as per manufacturer’s recommendations. Flooring materials and finishes are laid on both sides flush with the top of the expansion joint systems. The top of the expansion joint rails can be used as a guide for installing floor finishes. Rubber inserts on both sides provide thermal movement capability allow the central metallic bridging unit to eject upwards without damaging the substrate in case of a seismic activity. The central bridging unit can be snapped back in place after the seismic disturbance. Profile should be capable of withstanding loads from occasional vehicular traffic.

2.3.6       Interior floors with retrofit conditions or surface mounted assemblies:
Basis of Design: EMSEAL Migua FN series.

                Expansion joint assemblies to bridge XXmm wide joint gaps comprising of metallic anchorage units (rails) installed on both sides of the gap and a flexible rubber insert bridging the gap. The anchorage units are fastened on top of the finished floor. Profile should be capable of withstanding loads from occasional vehicular traffic.

2.3.7                Reserved

2.3.8                Reserved

2.3.9       Interior walls/ ceilings:
                Basis of Design: EMSEAL Migua D series.

                Expansion joint assemblies to bridge XXmm wide joint gaps comprising of L-shaped metallic anchorage units (rails) installed on both sides of the gap and a flexible rubber insert bridging the gap. The anchorage units should have perforations and are fastened to studs before drywall installation. Check that a profile of sufficient height is chosen to accommodate the wall finishes or drywall thickness. The top of the expansion joint rail can be used as a guide for installing wall finishes. Wall profiles should match with the profiles installed in interior floors providing a continuity of appearance.

2.3.9       Interior walls/ ceilings for possible seismic movements:
                Basis of Design: EMSEAL Migua series.

                All metal Expansion joint assemblies to bridge XXmm wide joint gaps comprising of L-shaped metallic anchorage units (rails) installed on both sides of the gap and a central unit bridging the gap. The anchorage units are fastened to studs before drywall installation. Check that a profile of sufficient height is chosen to accommodate the drywall thickness. The top of the expansion joint rail can be used as a guide for installing wall finishes. Wall profiles should match with the profiles installed in interior floors providing a continuity of appearance. Systems should be capable of ejecting outwards without damaging the substrate or be self sacrificial in case of seismic disturbance.

2.3.10     Interior walls/ ceilings with retrofit conditions or surface mounted assemblies:
                Basis of Design: EMSEAL Migua FA series.

                Expansion joint assemblies to bridge XXmm wide joint gaps comprising of metallic anchorage units (rails) installed on both sides of the gap and a flexible rubber insert bridging the gap. The anchorage units are fastened on top of the finished wall.

2.3.11     Interior walls/ ceilings with retrofit conditions or surface mounted assemblies:
                Basis of Design: All metal EMSEAL Migua FA series.

                Expansion joint assemblies to bridge XXmm wide joint gaps comprising of metallic cover plates installed on one side of the gap. Profiles are fastened on top of the finished wall.

2.3.12     Reserved

2.3.13     Reserved

PART 3. Execution

3.1           SURFACE CONDITION Joint surfaces to receive seal shall be sound, smooth, straight, parallel, clean, dry and free of all visible contaminants. Applications of non-visible coatings or contaminants to surfaces of joint interface area prior to installation of seal shall be controlled by the Architect/Engineer in consultation with the expansion joint manufacturer.

3.2           INSTALLATION

3.2.1      The following is a general summary of installation requirements. In all cases the manufacturer’s standard written instructions or specific instructions of a manufacturer’s technician are to be followed.

3.2.2       Set work plumb, square, level and free from distortion.

3.2.3       Use anchoring devices and fasteners for securing expansion joint cover assemblies to in-place construction. Provide chemical fasteners wherever possible and as recommended or supplied by expansion joint manufacturer.

3.2.4       System to be leveled into and embedded in 2-part hi-mod epoxy-gel setting-bed as supplied by expansion joint manufacturer in blockout mounted horizontal applications. Ensure that no rattling or movement occurs between the substrate and the profile.

3.2.5       System to be leveled into and fastened to the studs behind the wall finishes in blockout mounted vertical applications.

3.2.6       Perform all cutting, assembling and fitting required for installation of expansion joint covers.

3.2.7       If being installed in blockouts on each side of the joint-gap, the blockout depth shall equal the system leg height plus ¼-inch (6mm).  The blockout width on each side of the joint-gap will vary with model being installed and with size of joint-gap (consult with manufacturer before casting or cutting blockouts).

3.2.8       Install joint cover assemblies in true alignment and proper relationship to expansion joints and adjoining finished surfaces measured from established lines and levels. Securely attach in place with all required accessories.  Locate anchors at recommended intervals, and not less than 3 inches from each end.

3.2.9       Maintain continuity of expansion joint cover assemblies with end joints held to a minimum. Lengths of profiles with one-piece anchorage unit are connected with the help of slide-in connecting pins. Lengths of profiles with two-piece anchorage units are connected by staggering the aluminum profiles.

3.2.10     The blockouts in case of recessed profiles are to be filled flush to the floor or top surface of the expansion joint with a low-modulus elastomeric concrete capable of handling expected loads. If installing into floor where special floor covering is specified, joint system must be installed higher than the sub-floor level by an amount which will allow the flooring material to be installed flush to the finished surface of the joint system.

3.2.11     Reserved

3.3          CLEANING AND PROTECTION

3.3.1       Do not remove protective materials until finish work in adjacent areas is complete. 

3.3.2       When protective material is removed, clean exposed metal surfaces to comply with manufacturer’s instructions.

3.3.3       Remove all waste materials from the site.

3.3.4       Seal shall be cleaned of all foreign matter as recommended by the seal manufacturer. 

3.3.5       Leave work in a condition satisfactory to the Architect/Engineer.

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--GuideSpec-05800-Floor&Wall (.doc)--