ARCHITECTURE AND CONSTRUCTION BLOG

I Needed Something That Did Not Exist (Part II)

In the previous article, I described a moment: a top-floor apartment in Barcelona, summer 1991, prestressed alumina cement beams with reinforcing bars snapped like guitar strings, and the uncomfortable conclusion that no product available on the market had really been designed to solve that problem.

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The Beam That Did Not Yet Exist (Part I )

In the early hours of 11 November 1990, a residential building on Carrer Cadí, in the Turó de la Peira district of Barcelona, collapsed without warning.

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From Strategy to System: How to Materialise a Defined Structural Solution

Throughout the previous articles, a progressive evolution has been outlined in the approach to interventions on existing structures:

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Defining the Structure from the Underside

Throughout the previous articles, an evolution in the approach to interventions in existing structures has been outlined: from reducing risk to explicitly defining structural behaviour.

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The Role of Weight in Structural Strengthening: a Key Factor in Existing Floor Systems

Following previous discussions on the importance of defining structural behaviour in interventions on existing structures, a critical question emerges:

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From Theory to Practice: a Structural Approach to Strengthening Existing Floor Systems

Throughout the previous articles, an evolution in the approach to interventions in RAAC-affected structures has been explored:

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Rethinking RAAC Remediation: from Uncertainty to Defined Structural Behaviour

Throughout this series, different aspects of the RAAC problem have been analysed: its structural behaviour, the uncertainty associated with its residual capacity, intervention strategies, system modelling, and serviceability performance.

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Engineering Decisions Under Uncertainty: Lessons from RAAC

Throughout the previous articles, different aspects of the RAAC problem have been examined: its structural behaviour, the uncertainty associated with its residual capacity, strengthening strategies, system modelling, and serviceability performance.

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From Temporary Propping to Engineered Structural Solutions

After analysing the uncertainty associated with the behaviour of RAAC and the design strategies to be adopted when its residual capacity cannot be reliably determined, a key question arises in many projects:

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When Residual Capacity is Unknown: Designing RAAC Strengthening Under Uncertainty

After analysing the structural behaviour of RAAC strengthening systems across different projects, one question consistently emerges:

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Uncertainty and Stochastic Behaviour in RAAC Structures: Designing When Residual Capacity is Unknown

In previous articles, several aspects of strengthening structures affected by RAAC have been examined: structural behaviour, intervention strategies, integration within the global structural system of the building, and serviceability performance.

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Serviceability in RAAC Strengthening: Deflection, Vibration and In-service Performance

In the previous article, the integration of strengthening systems within the global structural model of the building was analysed. Once structural safety has been verified, another key question arises in RAAC rehabilitation projects:

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Modelling RAAC Strengthening Systems within the Building’s Global Structural Analysis

In previous articles, the need to define a clear structural strategy for the rehabilitation of RAAC-affected elements has been discussed. However, once such a strategy has been established, a fundamental question arises for any structural engineer:

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A Rational Approach to Strengthening RAAC Structures

A rational structural strengthening approach for RAAC-affected elements using aluminium telescopic beams

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How aluminium telescopic beams behave structurally in RAAC remediation

In the previous article, I discussed why strengthening systems for RAAC must be conceived to be calculated, not assumed. This naturally leads to the next question for structural engineers:

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Designing RAAC Strengthening Systems to Be Calculated, Not Assumed

In my previous articles, I discussed RAAC as both a safety challenge for public buildings and a design responsibility challenge for structural engineers. This article focuses on the next logical question: how should RAAC strengthening systems be conceived from a structural design perspective?

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RAAC in the UK: a structurally rational strengthening approach using aluminium telescopic beams

For many years, Reinforced Autoclaved Aerated Concrete (RAAC) has represented a significant challenge for structural engineers involved in the assessment and remediation of existing buildings in the UK. Beyond asset-management concerns, RAAC presents a core engineering problem: uncertainty in residual capacity, brittle failure mechanisms and…

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RAAC in the UK: a structural strengthening approach using aluminium telescopic beams

For many years, Reinforced Autoclaved Aerated Concrete (RAAC) has represented a significant structural challenge within the UK’s public building estate. Schools, hospitals and other essential facilities have been forced to close, restrict use or rely on extensive temporary propping due to concerns over sudden structural…

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ARCHITECTURE AND CONSTRUCTION BLOG

I Needed Something That Did Not Exist (Part II)

The Beam That Did Not Yet Exist (Part I )

From Strategy to System: How to Materialise a Defined Structural Solution

Defining the Structure from the Underside

The Role of Weight in Structural Strengthening: a Key Factor in Existing Floor Systems

From Theory to Practice: a Structural Approach to Strengthening Existing Floor Systems

Rethinking RAAC Remediation: from Uncertainty to Defined Structural Behaviour

Engineering Decisions Under Uncertainty: Lessons from RAAC

From Temporary Propping to Engineered Structural Solutions

When Residual Capacity is Unknown: Designing RAAC Strengthening Under Uncertainty

Uncertainty and Stochastic Behaviour in RAAC Structures: Designing When Residual Capacity is Unknown

Serviceability in RAAC Strengthening: Deflection, Vibration and In-service Performance

Modelling RAAC Strengthening Systems within the Building’s Global Structural Analysis

A Rational Approach to Strengthening RAAC Structures

How aluminium telescopic beams behave structurally in RAAC remediation

Designing RAAC Strengthening Systems to Be Calculated, Not Assumed

RAAC in the UK: a structurally rational strengthening approach using aluminium telescopic beams

RAAC in the UK: a structural strengthening approach using aluminium telescopic beams

The solution for the RAAC

Aluminium and Fire in Construction

Reinforce or replace? That is the question.

Advantages of EXTEND-SYSTEM Aluminium Extendable Beams

The RAAC Crisis in the United Kingdom

Xylophagous Organisms and their impact on Wooden Structures

Reinforced Autoclaved Aerated Concrete

What is Carbonation?

BEAMS AFFECTED BY ALUMINOSIS, OR CONCRETE FEVER