Mobile tower

Scaffold towers compared: load class, height and load

Every mobile tower system ScaFix models, from 8 manufacturers, in one table: its EN 1004 load class, the highest platform its manufacturer's tables give indoors and outdoors, the load its manual states and how many set-ups the tables list.

By Ole Emil Frikstad Urstad · How the numbers are computed · Last updated 25 October 2026

The tallest Krause ProTec set-up the table offers.

Which scaffold tower goes highest, and what can it carry?

Of the 21 mobile tower systems in ScaFix, Krause ProTec reaches the highest outdoor platform in its manufacturer's table, 8.3 m; BoSS Clima 3T goes highest indoors, 12.2 m. All 20 EN 1004 towers state load class 3 (2.0 kN/m²). The table gives every tower's class, heights and load from its own manual.

Mobile scaffold towers side by side

Sorted by the highest outdoor platform. Heights are the tallest rows of each manufacturer's set-up tables; loads as each manual prints them.
Tower	EN 1004 load class	Highest platform indoors	Highest platform outdoors	Load (manufacturer)	Set-ups
Krause ProTec	3	10.3 m	8.3 m	200 kg/m²	20
BoSS Clima 3T	3	12.2 m	8.2 m	204 kg/m²	92
BoSS Ladderspan 3T	3	12.2 m	8.2 m	204 kg/m²	92
BoSS Clima AGR	3	12.2 m	8.2 m	204 kg/m²	92
BoSS Ladderspan AGR	3	12.2 m	8.2 m	204 kg/m²	92
Euro Towers Euro 250 3T	3	12.2 m	8.2 m	225 kg per platform; 750 kg on the whole tower; at most 2 persons on the platform	66
Lyte HiLyte 500 3T	3	12.2 m	8.2 m	275 kg per platform level; 950 kg on the whole tower, its own weight and ballast included	84
Instant UpRight Span 400	3	12 m	8 m	360 kg per platform level; 720 kg on the whole tower	60
Instant UpRight Span 400 AGR	3	8 m	8 m	360 kg per platform level; 720 kg on the whole tower	12
Euro Towers 232 3T	3	12 m	7.8 m	250 kg per platform; 750 kg on the whole tower	105
Krause STABILO 100	3	11.4 m	7.4 m	200 kg/m²	29
Krause STABILO 50	3	11.4 m	7.4 m	200 kg/m²	20
Layher Uni	3	11.38 m	7.38 m	2 kN/m²	53
Krause STABILO 1000	3	11.3 m	7.3 m	200 kg/m²	29
Altrex RS TOWER 51/52	3	11.2 m	7.2 m	750 kg on the whole tower	51
Altrex RS TOWER 55	3	10.8 m	6.8 m	750 kg on the whole tower	15
Bil-Jax Pro-Jax	OSHA (US), no EN class	17 ft (5.18 m)	17 ft (5.18 m)	6' length: 1,000 lb distributed; 8' and 10': 500 lb	11
Krause ClimTec	3	5 m	5 m	200 kg/m²; 180 kg per platform	3
Layher SoloTower	3	4.15 m	4.15 m	2 kN/m²	3
Euro Towers The One	3	4.1 m	4.1 m	150 kg per platform; 500 kg on the whole tower	4
Werner UK aluminium	3	3.4 m	3.4 m	not stated	3

BoSS Clima 3T mobile tower in the ScaFix 3D model — BoSS Clima 3T mobile tower, drawn from the manufacturer's table.

Werner UK aluminium mobile tower in the ScaFix 3D model — Werner UK aluminium mobile tower, drawn from the manufacturer's table.

Stair towers side by side

Stair towers are anchored to the building or the scaffold, not ballasted, so EN 1004 classes do not apply.
Stair tower	Footprint	Heights	Set-ups
PERI UP Flex 75	2.5 × 1.5 m	4.3–20.3 m	8
Layher Allround	2.57 × 1.4 m	2–20 m	10

How to read the table

EN 1004-1 load class 3 means 2.0 kN/m² (about 200 kg/m²) spread over the working platform; class 2 is 1.5 kN/m². Where a manual allows only one loaded working platform at a time, its tower page says so.
Outdoor limits are lower than indoor ones: EN 1004-1 frames them at 12 m indoors and 8 m outdoors, and each manufacturer's table sets its own maximum, with stabilisers and ballast per height.
Bil-Jax Pro-Jax is a US tower under OSHA 29 CFR 1926.452(w), which has no load classes; its manual states the load by platform length.
Mobile and stair towers are in the Pro plan only, not in Basic Light or Basic. ScaFix is a planning aid, not structural approval: the manual on site governs and a competent person checks the tower.

Sources

EN 1004-1, OSHA 29 CFR 1926.452(w) and the manufacturers' manuals the tower pages quote, read on 23–25 October 2026.

Scaffold towers compared: questions and answers

Which scaffold tower goes highest outdoors?

Krause ProTec, with 8.3 m platform height outdoors in its manufacturer's table; indoors BoSS Clima 3T reaches 12.2 m. The lowest outdoor maximum is Werner UK aluminium (3.4 m).

What load class do mobile scaffold towers have?

All 20 EN 1004 towers in ScaFix state load class 3, 2.0 kN/m² (about 200 kg/m²) on the working platform. The US Bil-Jax Pro-Jax falls under OSHA, which has no classes.

Which towers state a load limit for the whole tower?

Euro Towers Euro 250 3T 750 kg, Lyte HiLyte 500 3T 950 kg (own weight and ballast included), Instant UpRight Span 400 720 kg, Instant UpRight Span 400 AGR 720 kg, Euro Towers 232 3T 750 kg, Altrex RS TOWER 51/52 750 kg, Altrex RS TOWER 55 750 kg and Euro Towers The One 500 kg, as their manuals print it. The others give the load per m² or per platform only.

Can I plan these scaffold towers in ScaFix?

Yes, in the Pro plan: choose the system, platform, height and indoor or outdoor use, and ScaFix shows the tower in 3D with its parts list, stabilisers and ballast from the manufacturer's table. Towers are not in Basic Light or Basic.

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