SeismAtec 450 — seismic expansion joint cover for floors

Name: SeismAtec 450 Seismic Expansion Joint
Brand: Vexcolt
SKU: SEISMATEC-450

Central-pan aluminium expansion joint rated to ASTM E-1399 for thermal, wind and seismic movement, for floor-to-floor and floor-to-wall applications up to 500 mm gaps.

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Data sheet (1 PDF) ↓CAD detail on request

Specifications

Movement capacity	Gap widths 50, 75, 100, 150, 200, 250, 300, 400, 500 mm. Thermal/wind ±25.0 mm; seismic ±50% of expansion gap width (see TDS)
Standard	ASTM E-1399 · Class I (Thermal), Class II (Wind), Class III (Seismic)
Traffic	Up to over 25,000 pedestrian movements/day; ≤1,000/day trolley/light-wheeled; ≤100/day heavy-wheeled (see TDS traffic table)
Surface	Smooth transit, central pan system
Material	6063 T5 & T6 aluminium. Two depth options: 50 mm or 60 mm
Fire & waterproofing	Fire barrier available on request; rating confirmed per job; waterproofing membrane

SeismAtec 450 A02 floor to wall — cross-section detail (illustration, not to scale)

Typical components

Concrete slab (by others)
Continuous aluminium central pan system — 50 mm or 60 mm deep
Sealant and backer rod (by others)
Finishes / paving inset: 50 mm-deep systems support paving up to 10 mm within the central pan; 60 mm-deep systems support paving up to 20 mm

Applications

Airport TerminalsEducationalExhibition CentresDepartment StoresDistribution & Retail WarehousesFactoriesHospitalsMuseumsOffices & HotelsParkingPlaces of WorshipResidential BuildingsRail, Metros & Elevated Rail StationsRoads & BridgesShopping CentresSports StadiumsSupermarkets

Where it's installed

The SeismAtec 450 on our projects

Two of our written-up projects use the 450.

Chennai Egmore Railway Station

Metro & rail · Chennai

With MegAtec 310, 340, 360 and 610

Guwahati Medical College

Hospitals and healthcare · Guwahati

With MegAtec 340 and 360

Specification

A clause written to the SeismAtec 450 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 seismic floor expansion joint cover system with a central pan, floor to floor and floor to wall, to the locations scheduled, for a nominal structural gap of 100 mm, accommodating a seismic movement of not less than ±50 mm and a thermal and wind movement of ±25 mm. The system shall be cyclically tested to ASTM E-1399, Classes I, II and III, and the test evidence submitted. The cover shall give a smooth transit across a central pan, flush with the adjacent finish. It shall be rated by its data sheet for the scheduled traffic, per day: pedestrians more than 25,000, trolleys up to 1,000, forklifts up to 1,000, cars up to 100. 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.