SeismAtec 400, 410, 420, 430 and 440
The rest of the seismic line. All five share the central-pan architecture of the SeismAtec 450 we make in New Delhi and the same seismic rating, ±50% of the gap. What changes between them is the thermal capacity, the bottom of the gap band, a pan that lifts during an event, and a coloured seal.
Supplied to order. The 400, 410, 420, 430 and 440 are manufactured by the Vexcolt group outside India and brought in against a confirmed order — not held in the New Delhi range. Confirm availability with us before it goes into a programme or a BOQ; the systems made in India are the default where they fit.
Five variations on one seismic system
| Model | Gap widths | Thermal & wind | Seismic | What is different | Sheet |
|---|---|---|---|---|---|
| SeismAtec 400 A01 floor · A02 floor to wall | 100–500 mm 100, 150, 200, 250, 300, 400, 500 | ±25 mm | ±50% of the expansion gap width | Lifting pan with rotating side frames | TDS |
| SeismAtec 410 A01 floor · A02 floor to wall | 100–500 mm 100, 150, 200, 250, 300, 400, 500 | ±50 mm | ±50% of the expansion gap width | Lifting pan, ±50 mm thermal | TDS |
| SeismAtec 420 A01 floor · A02 floor to wall | 50–500 mm 50, 75, 100, 150, 200, 250, 300, 400, 500 | ±50 mm | ±50% of the expansion gap width | Widest gap band, from 50 mm; seismic at the 50 mm gap is +50/−35 mm on the sheet | TDS |
| SeismAtec 430 A01 floor · A02 floor to wall | 50–500 mm 50, 75, 100, 150, 200, 250, 300, 400, 500 | ±12.5 mm | ±50% of the expansion gap width | Sealed pan, lowest thermal figure | TDS |
| SeismAtec 440 A01 floor · A02 floor to wall | 50–500 mm 50, 75, 100, 150, 200, 250, 300, 400, 500 | ±25 mm | ±50% of the expansion gap width | Sealed pan, ±25 mm thermal | TDS |
Shared on every sheet: seismic expansion joint, central-pan system; floor to floor · floor to wall; heights 50, 60 mm; Class I (thermal), Class II (wind), Class III (seismic); fire barrier 120–240 minutes; waterproofing membrane. Traffic: pedestrian >25,000/day · trolley and light-wheeled ≤1,000/day · wheeled ≤100/day. 50 mm deep systems suit paving up to 10 mm deep in the central pan; 60 mm deep systems suit paving up to 20 mm.
Which one a separation actually calls for
Start from the seismic separation the structural engineer has calculated: it sets the gap, and every model here is rated for ±50% of it. Then the thermal column decides. A long exposed run in the north wants the ±50 mm of the 410 or 420; a short internal run is fine at ±12.5 or ±25. The 400 and 410 add a pan that lifts and winged side frames that rotate during an event, which the sheets describe as keeping egress safe for people with mobility difficulties. The 430 and 440 add a coloured seal where the finish schedule wants the joint to read as a line rather than a plate.
SeismAtec 400
Smooth-transit central pan; during a seismic event the pan lifts and the winged side frames rotate to keep egress safe for people with mobility difficulties; ADA-compliant.
Source: Seismatec-400-A01-A02.pdf p.1–2.
SeismAtec 410
Same lifting-pan and rotating-frame behaviour as the 400, with double the thermal capacity.
Source: Seismatec-410-A01-A02.pdf p.1–2.
SeismAtec 420
Smooth-transit central pan.
Source: Seismatec-420-A01-A02.pdf p.1–2.
SeismAtec 430
Smooth-transit central pan with a coloured seal (black RAL 7021, grey RAL 7038, beige RAL 1015).
Source: Seismatec-430-A01-A02.pdf p.1–2.
SeismAtec 440
Smooth-transit central pan with a coloured seal (black, grey or beige).
Source: Seismatec-440-A01-A02.pdf p.1–2.
The 450 covers gaps from 50 to 500 mm at ±25 mm thermal and is the model we manufacture and hold in New Delhi; where its thermal figure is enough, it is the default, and what the seismic zone changes explains when the separation rather than the thermal figure is doing the sizing.
The seismic system we make here
Specifying a seismic joint on an Indian project?
Send the drawings with the joint lines marked. The schedule tells you where a made-in-India system does the job and where the group product genuinely earns its place, with no lead time implied for either.
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