www.emseal.com

MIGUTAN Guide Specification

The following guide specification is presented here is an easy-to-copy-and-paste format.

In addition, if you prefer, you may download this guide specification in .doc format by clicking this link: MIGUTAN GuideSpec (.doc).

The index at left will take you to similar guide specification pages for other EMSEAL products.

MIGUTAN SERIES for Plaza (podium) Decks, Waterproofed Split-Slab Construction, Stadium Concourses

***CRITICAL ADDITION TO DIVISION 3—CONCRETE.  Note to specifier:  To facilitate successful expansion joint installation, follow the link below and include the proposed language in Division 3***

 General Contractor Expansion Joint Responsibilities [.rtf]

*** COMPLETE MANUFACTURER'S GUIDE SPECIFICATION***

MIGUTAN FP… Series WATERTIGHT SPLIT-SLAB/PLAZA-DECK EXPANSION JOINT SYSTEM 

SECTION 07900—WATERTIGHT EXPANSION JOINT SEALANT SYSTEMS

NOTE: It is critical in ensuring the success of the project that this expansion joint be specified in the same section as the deck waterproofing system and is installed by the contractor responsible for installing the deck waterproofing system.

SUBMITTALS

General: Submit the following in accordance with (Specifier: Insert appropriate reference to related sections here, ex. Conditions of Contract, Division 1, etc.)

A.             Product data in the form of manufacturer's product specifications, specific, detailed installation instructions that include specifics on integration of side flashing sheets with deck waterproofing system, and general recommendations for each type of expansion joint cover assembly indicated.

B.             Shop drawings showing full extent of expansion joint cover assemblies; include details indicating profiles of each type of expansion joint cover assembly, splice joints between sections, joinery with other types, special end conditions, fasteners, and relationship to adjoining work and finishes with specific reference to tie-in with deck waterproofing system through integration with expansion joint system side flashing sheets.

C.      Samples for each joint cover assembly of same materials to be used in work.

QUALITY ASSURANCE

A.         Manufacturer's Instructions: In addition to requirements of these specifications, comply with manufacturer's instructions and recommendations for all phases of work, including preparation of substrate, applying materials, and protection of installed units.

B.        Use only qualified, authorized applicator, thoroughly skilled and specially trained in the techniques of expansion joint installation, which has demonstrated the ability to install the materials to the manufacturer’s satisfaction.  The applicator must be the same contractor as will be installing the deck waterproofing system.

C.        Single-Source Responsibility: Obtain expansion joint cover assemblies from one source from a single manufacturer.

PRODUCTS

ACCEPTABLE MANUFACTURERS

Basis of Design:  MIGUTAN FP... Series SYSTEM from EMSEAL

USA & INTERNATIONAL:  EMSEAL JOINT SYSTEMS, LTD, 23 Bridle Lane, Suite 3, Westborough, MA 01581-2603, Toll Free: 800-526-8365 or PH: 508-836-0280, FX: 508-836-0281, www.emseal.com.

CANADA:  EMSEAL CORPORATION, 120 Carrier Drive, Toronto, Ontario, Canada, M9W 5R1 Toll Free: 800-526-8365 or PH: 416-740-2090, FX: 416-740-0233, www.emseal.com.

MATERIALS:  WATERTIGHT SPLIT-SLAB/PLAZA-DECK EXPANSION JOINT

General: The expansion joint assemblies installed on this project must meet all of the requirements of the specification and must have a minimum 10-year proven track record of leak-free installations under similar conditions to this project. Expansion joint system must consist of all of the following components:

A.       Articulated aluminum retainer legs and pre-drilled mounting flanges (separate interlocking extrusions)

B.    Extruded, heat-weldable, thermoplastic-rubber sealing insert (gland)

C.    Heat-weldable PVC flashing membranes locked into reglet in top surface of retainer leg on each side of joint

D.      Pre-drilled, striated stainless steel protective cappings with stainless steel machine screws and nylon counter-sink seals

E.       Epoxy-mortar setting/leveling bed to act as dielectric separator as well as to ensure that the system is fully supported and at the appropriate elevation throughout its length.

F.       Carbon Steel Grade II zinc dichromate yellow finish, UNC 16, anchors and nuts and hi-mod anchor epoxy.

Aluminum Extrusions

ASTM B 221, alloy 6063-T5.  The retainer leg/mounting flange assembly shall consist of two or more (but not less than two) interlocked components which are free to slide relative to each other to provide positive interlocking of successive joint lengths and which also serve to accommodate relative longitudinal movements. 

(Exceptions to articulated leg requirement: 1) Where the solid leg system (FP .../25) is used for transitions to vertical surfaces, the retainer leg/mounting flanges will be of a single-piece solid extrusion with mounting flanges no less than 4mm thick.  2) Where high-volume continuous heavy-weight vehicular traffic is expected the solid leg FP.../6000S must be used.  The vertical solid-leg required in continuous-traffic applications must have a thickness of not less than 3/8-inch (6mm).  Additionally the extrusion must incorporate a bracing “toe” that protrudes beyond the plane of the vertical leg, opposite to the mounting flange, to resist torque forces.  Where solid leg models are required to be used, extrusion is to contain a channel into which a solid stainless steel pin must be inserted to positively align consecutive lengths.

All mounting flanges shall be extruded such that the edge of the flange over which the deck waterproofing will be laid will be sloped to eliminate any abrupt angles. 

All deck-mounted flanges shall contain a recessed channel to receive the anchors and nuts and which will be subsequently filled and will serve to hold the nuts below the plane of the waterproofing materials above.  Where the solid leg system (FP…/25) is used on vertical surfaces, the anchor holes in the mounting flanges must be countersunk in the field to receive a countersunk anchor that will not protrude into the plane of the waterproofing materials above. The bottom surfaces of the flanges which will contact the setting-bed epoxy and the top surfaces of the mounting flanges which will be contacted by the waterproofing materials will be striated to provide a mechanical grip with the epoxy and waterproofing materials respectively.

 The top surface of each retainer leg shall incorporate two reglets for receiving the sealing insert and side flashing sheets’ sealing darts from above.  Top surface of the extrusion shall be pre-drilled and tapped to receive stainless steel anchoring machine screws for the stainless steel protective capping/retaining strips.

Sealing Insert (Gland)

Sealing insert shall be thermoplastic rubber to enable heat welding of butt joins, directional changes (tees, ells) and transitions in plane (horizontal to vertical and vice versa).  All directional changes and transitions shall be factory-fabricated to drawing dimensions on centerline provided by the contractor. Underside of flanges of gland shall have sealing darts that mate with the top of the supporting aluminum rail extrusion.  Gland shall have flanges which extend beyond location of sealing darts and which overlap the PVC sealing darts also installed into reglet in top of supporting aluminum rail extrusion.  Gland to be secured in compression to supporting aluminum rail extrusion with pre-drilled, striated stainless steel protective cappings with stainless steel machine screws and nylon counter-sink seals.                                                           

Side Flashing Sheets

The flashing side sheets shall be 300mm wide x 3mm thick thermoplastic PVC to allow heat welding at all joints for continuous waterproofing at all transitions, corners, upturns, etc. Double-width flashing sheets shall be supplied for use in models with leg heights over 6” (150mm). Flashing sheets shall have .5mm amplitude ribs at 2mm on-center spacing on both top and bottom surfaces to create labyrinth seal in integration with deck waterproofing materials.  Flashing sheets shall have ribbed sealing darts inserted into channels on the top of the supporting aluminum rail extrusion. 

Flashing sheets shall be ”sandwiched” between two layers of the deck waterproofing system.  Flashing materials must be PVC-based material to ensure adhesion with deck waterproofing materials. Flashing sheets shall have a short-term temperature resistance suitable for integration with hot-applied deck waterproofing systems.

Gland and Flashing Sheet Retainer Caps

Stainless steel, ASTM A167, Type 304 with 2B finish.  Secure to extrusion with stainless steel machine screws, 150 millimeters on center, seated on countersink nylon washers.  Retainer caps shall be removable to allow for expansion joint gland replacement.  At locations where cover plates are required over top of the gland, add over one retainer-cap a specially fabricated stainless-steel cover plate to extend across the sealing gland and rest on the top of the opposite retainer cap.  Stainless steel coverplate to be fabricated from minimum 11 gauge (3mm) thick, type 304 stainless steel.

Fabrication, Terminations and Transitions

Provide expansion joint system needed to accommodate joint size and structural movement specified.  Expansion joint supporting aluminum rail extrusions to be factory set at mid-point of movement range and held at this dimension by spacers to be removed after attachment of the rails to the deck.  Expansion joint lengths to be factory numbered in sequence.  Furnish in lengths to minimize number of end joins.  Provide heat-welded corners where joint changes directions or abuts other materials.  All terminations & transition pieces, tee-joints, corners, curbs and cross-connections in insert portion as well as all aluminum components of joint assembly must be factory-fabricated and welded to provide continuity. 

EXECUTION

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.

INSTALLATION

Inspection:  Manufacturer's technician shall be on site at commencement of installation for inspection of substrate preparation and demonstration of installation procedures.  Bids must include a specific line item for manufacturer’s technical service and will be considered incomplete and subject to disqualification if excluded.  Technical service is defined as the paid, contracted service of a manufacturer’s technician..

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

Fastening:  Use epoxy anchoring devices and fasteners for securing expansion joint cover assemblies to in-place construction. Provide fasteners as supplied by expansion joint manufacturer as follows: 5/16-inch diameter x 4-inch long anchor, carbon-steel grade II, zinc-dichromate yellow finish, UNC 16, threaded end- to-end, with nut of the same material. (Note to specifier: if conditions dictate the need for longer anchors this must be disclosed and determined during design.)

Use 2 part, hi-Mod epoxy, as supplied by expansion joint manufacturer, for securing of anchors into predrilled holes.

System to be leveled into and embedded in 2-part hi-mod epoxy-gel setting-bed as supplied by expansion joint manufacturer.

Curing, Fitting and Placement: Perform all cutting, and fitting required for installation of expansion joint covers.  Horizontal flanges shall be set in an epoxy-mortar leveling bed with a minimum 3/8-inch thickness.  Install joint cover assemblies in true alignment and proper relationship to expansion joints and adjoining finished surfaces measured from established lines and levels.  Allow adequate space between rail lengths to allow free movement for thermal expansion and contraction of metal to avoid buckling.  Securely attach in place with all required accessories.  Locate anchors at recommended intervals, and not less than 3 inches from each end.

Joinery and Continuity: Maintain continuity of expansion joint cover assemblies with end joints held to a minimum and metal members aligned according to sequential numbering on retainers, ensuring that  joint is positively interlocked by staggering the sliding retainer leg/flange components or through the use of stainless steel joining pins in solid-leg models.

Installation of Extruded Preformed Seals: Integrate flashing sheets with deck waterproofing system materials according to manufacturer’s detailed installation instructions. Install seals in continuous lengths to comply with manufacturer's instructions.  All transitions and terminations shall be factory-welded wherever possible according to field-measurements and drawings on centerline provided by the contractor.  Site welding, where required, to be carried out only after suitable instruction by the expansion joint manufacturer.

CLEANING AND PROTECTION

Remove all waste materials from the site.  Do not use waste materials for patching unless so directed by the manufacturer.  Seal shall be cleaned of all foreign matter as recommended by the seal manufacturer.  Leave work in a condition satisfactory to the Architect/Engineer.

*** END OF COMPLETE MANUFACTURER'S GUIDE SPECIFICATION***

MIGUTAN GuideSpec (.doc)

Member:

Sealant Waterproofing and Restoration Institute

Construction Specifications Canada

Expansion joints and precompressed joint sealants by EMSEAL

1-800-526-8365 -- 508-836-0280 --  techinfo@emseal.com -- Fax: 508-836-0281
 

Copyright © 1998-2008 by EMSEAL Corporation. All rights reserved.
This document may not be reproduced in whole or in part without permission.