MegAtec 370 — metal floor expansion joint

Name: MegAtec 370 Metal Floor Expansion Joint
Brand: Vexcolt
SKU: MEGATEC-370

Aluminium floor expansion joint for foot and light-wheeled traffic, with a hairline-serrated, ADA-compliant slip-resistant surface, rated to ASTM E-1399.

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Data sheet (1 PDF) ↓CAD detail on request

Specifications

Movement capacity	Gap widths 25, 50, 75, 100, 150 mm; movement ±12 to ±75 mm (gap-dependent — see TDS)
Standard	ASTM E-1399 · Class I (Thermal), Class II (Wind)
Traffic	Foot / light-wheeled — up to ~10,000 pedestrian movements/day (see TDS traffic table)
Surface	Hairline-serrated, slip-resistant, ADA-compliant across the movement cycle
Material	6063 T5 & T6 aluminium, frame height 6 mm, no seal used
Fire & waterproofing	Fire barrier available on request; rating confirmed per job; moisture-barrier waterproofing

How a floor joint sits in the slab

Schematic — exact frame profile, blockout and fixing centres depend on the movement class and gap; see the TDS above.

MegAtec 370 A02 floor to wall — cross-section detail (illustration, not to scale)

Typical components

Concrete slab
High-strength (>40 N/mm²) levelling bed (by others)
Optional EPDM / torch-applied waterproofing membrane (by others)
M6 × 75 mm galvanised carbon-steel concrete screws
Continuous aluminium floor frame
Finishes / wearing surfaces

Applications

Airport TerminalsEducationalExhibition CentresDepartment StoresFactoriesHospitalsMuseumsOffices & HotelsParkingPlaces of WorshipResidential BuildingsRail, Metros & Elevated Rail StationsRoads & BridgesShopping CentresSports Stadiums

Where it's installed

The MegAtec 370 on our projects

One of our written-up projects uses the 370.

Raheja Vivarea

Residential · Bengaluru

With MegAtec 300 and 360

Specification

A clause written to the MegAtec 370 data sheet

Worked for a 100 mm floor joint. Change the gap and the movement for each location on the joint schedule and leave the rest. It names what the joint must do rather than who makes it, so an alternative has to match the performance, not just the description.

Supply and install a plate-type floor expansion joint cover system, floor to floor and floor to wall, to the locations scheduled, for a nominal structural gap of 100 mm, accommodating a movement of not less than ±50 mm. The system shall be cyclically tested to ASTM E-1399, Classes I and II, and the test evidence submitted. The exposed surface shall be serrated for slip resistance and remain accessible (ADA compliant) across the full movement cycle, flush with the adjacent finish. It shall be rated by its data sheet for the scheduled traffic, per day: pedestrians up to 10,000, trolleys up to 10, forklifts up to 10. A continuous moisture barrier membrane shall be installed within the joint and lapped to the structural waterproofing on both sides; the lap is within this subcontract. Where the joint crosses a fire compartment line, a fire barrier rated to the compartment is included (available on request; rating confirmed per job). Manufacture shall be against a site survey of the built gap taken after the structure is complete. The technical data sheet, the cross-section for each location and the installation method statement shall be submitted for approval before manufacture.

Each requirement is explained in how to specify an expansion joint. Writing to a CPWD tender? See the DSR items. See also expansion joints in buildings and the types of expansion joint.