How many storeys can a timber building reach?

The current record for timber buildings is 25 storeys (Ascent, Milwaukee, 86.6 m, completed 2022) using a hybrid timber-concrete system, and 18 storeys for a predominantly timber structure (Mjøstårnet, Norway, 85.4 m, completed 2019). Pure timber systems using CLT and glulam have been demonstrated up to 10–12 storeys without concrete cores.

The current record for timber buildings is 25 storeys (Ascent, Milwaukee, 86.6 m, completed 2022) using a hybrid timber-concrete system, and 18 storeys for a predominantly timber structure (Mjøstårnet, Norway, 85.4 m, completed 2019). Pure timber systems using CLT and glulam have been demonstrated up to 10–12 storeys without concrete cores. The practical limit is governed by lateral stability, fire regulations, acoustic performance, and foundation loads rather than material strength — timber columns can theoretically support 20+ storeys in compression.

Why this matters

This question relates to Structural Timber for Multi-Storey Buildings: Case Studies & Limits, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ Structural Timber for Multi-Storey Buildings: Case Studies & Limits

Related questions

• What structural systems are used for multi-storey timber buildings?
• How is lateral stability achieved in tall timber buildings?
• What fire strategy is used for multi-storey timber buildings?

About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia.