TemporaryWorks ScaffoldingSystems UrbanEngineering BuildingRegulations

Civil engineering lessons from a century of bamboo scaffolding

*The HSBC headquarters under construction in the 1980s, with bamboo scaffolding enveloping the building’s distinctive external structural frame in Hong Kong. Source: CNN (image by Ian Lambot)*

Bamboo scaffolding has been embedded in Hong Kong’s construction sector for more than a century, remaining a dominant access and temporary works system in one of the world’s densest high-rise environments. Unlike most global cities that transitioned fully to steel or aluminum systems, Hong Kong continues to rely heavily on bamboo for façade access, repair works, and building renovations. The system is valued for its low self-weight, high flexibility, rapid assembly, and adaptability to irregular geometries, particularly in dense urban settings where space constraints are critical.

Workers assemble a bamboo scaffold inside the Hong Kong Pavilion at the 2025 Venice Biennale, where the structure forms part of an exhibition exploring threatened heritage and public space in the city. Source: CNN (image by Oliver Law)

From an engineering perspective, bamboo scaffolding operates as a tied-frame structure, with load transfer dependent on pole geometry, knotting integrity, and anchorage to the permanent structure. When constructed in compliance with local codes, the system is capable of supporting both dead and live construction loads, even at significant heights.

Typical configuration of traditional bamboo scaffolding, showing posts, ledgers, transoms, ties, and bracing. Source: Building Department UK

Despite its long-standing use, bamboo scaffolding has come under renewed scrutiny following recent construction-related incidents and fires involving scaffolded buildings. Bamboo, as a natural material, is combustible and susceptible to degradation due to moisture, ultraviolet exposure, and mechanical damage. These characteristics do not inherently render the system unsafe, but they introduce additional risk variables that must be actively managed.

Engineering controls in Hong Kong include prescriptive requirements for pole diameter, spacing, tying frequency, load limits, and mandatory use of fire-retardant netting and coverings. Failure investigations have repeatedly shown that incidents are more commonly linked to non-compliant ancillary materials, poor workmanship, or inadequate supervision rather than the bamboo structure itself. Nevertheless, vertical continuity of scaffold systems can facilitate rapid fire spread when combined with flammable mesh or façade materials, highlighting the importance of holistic system design rather than material substitution alone.

In response to safety concerns and workforce trends, public authorities have announced a gradual increase in the use of metal scaffolding for selected public-sector projects. This policy shift is framed around standardisation and worker protection rather than an outright prohibition of bamboo systems. In practice, many large projects already employ hybrid solutions, combining steel base frames with bamboo upper levels to balance structural robustness and constructability.

Smoke and flames engulf bamboo scaffolding and protective netting during a fire at the Wang Fuk Court housing estate in Tai Po, Hong Kong, on November 26, 2025. Source: Al Jazeera (image by Tyrone Siu / Reuters)

The future of bamboo scaffolding will depend on whether it can be integrated into modern risk management frameworks without compromising safety benchmarks. Enhanced material treatment, stricter certification of scaffold coverings, and formalised training pathways are likely to determine whether the technique remains viable. As urban environments continue to densify, the engineering challenge is not simply replacing traditional systems, but ensuring that temporary works evolve in line with contemporary safety, durability, and performance expectations.

In this article, the recent Hong Kong high-rise fire is examined, highlighting critical façade and fire-safety failures associated with bamboo scaffolding systems.

Sources: edition.cnn.com, aljazeera.com, bd.gov.hk