Architectural Technology Commons^™

Defining Demand - The Suitability Of Sensor-Based Demand-Controlled Ventilation Within Deep Energy Retrofit Dwellings, Seamus Harrington, Mark Mulville

Articles

This paper reviews a Sensor-Based Demand-Controlled Ventilation (SBDCV) system which seeks to provide fresh air for breathing and to dilute and exhaust pollutants and odours. Previous studies have demonstrated that the constant pressure system increases ventilation extract and inflow based on relative humidity levels and/or presence detection and works on the assumption that the level of ventilation provided is sufficient to control the concentration of all indoor air pollutants, including those that are not occupant generated. This paper presents the results obtained from monitoring the indoor air quality of eight dwellings that had undergone a fabric-first deep energy retrofit and …

Hygrothermal Risk Assessment Of External Wall Insulation Retrofit To Non-Traditional Wall Types In An Irish Context, Using The Glaser Method And A Heat, Air And Moisture Transient Model, Gareth Mcdonnell, Joseph Little

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The Climate Action Plan 2019 targets the low-energy retrofit of 500,000 existing Irish homes before 2030.1 Up to 80 per cent of building failures can be attributed to moisture risks.2 The literature indicated that external wall insulation (EWI, ETICS) failures are mostly due to moisture ingress at junctions and interfaces. A hygrothermal risk assessment of EWI on three walls with rendered concrete/concrete blockwork/cavity walls in Dublin, Belfast and Belmullet was undertaken using transient numerical simulation and the Glaser method. The guidance, common practice indicates a preference for Glaser. The initial simulation results were compared to assess the appropriateness of Glaser. …

Biobased Construction From Agricultural Crops: Paper 1 - A State Of Play Of Commercial Solutions In Europe, Patrick Daly, Paula G. Barril

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In response to environmental concerns and the global warming issue in particular there is a growing drive to decarbonise the building sector and transition it to more circular practices.

Biobased construction materials, products and systems are an important low carbon and circular strategy as they can enable low to negative carbon construction and have strong circularity advantages notably being able to enter the bio cycle, using renewable, low to zero toxic resources and provide a range of other performance benefits, including moisture and vapour regulation.

This novel research presents a unique state of play on the commercial application of biobased …

Biobased Construction From Agricultural Crops: Paper 2 - Supply Chain Dynamics Of European Case Studies, Patrick Daly, Paula G. Barril

Articles

Energy security, economics and environmental factors are key drivers toward greater energy efficiency, decarbonisation and circularisation of the building sector.

Bio-based construction provides a potential low carbon and circular strategy toward these aims, as these materials can sequester carbon, are derived from renewable and nontoxic sources and can be re circulated in either technical or bio cycles.

This innovative research undertakes a state of play into select agri-crop biobased construction materials, products and systems across Europe focusing on their supply chain types and dynamics.

The research is based on a multi case study applying a range of mainly qualitative research …

Building Performance - Societal Drive, Programme And Symposium, Joseph Little, Patrick Daly

Articles

Society is increasingly looking at the construction industry to mitigate the environmental crisis and solve the housing crisis through wholesale embrace of three broad sets of challenges. The MSc in Building Performance (Energy Efficiency in Design) (MSc BP(EED)) was created in 2017 to provide significant upskilling in the knowledge, skills, and software applications of building design professionals so that they can meet these challenges, while creating compliant, sustainable, super-low energy, new and renovated buildings. The delivery of the programme supports upskilling of employed building design professionals at Masters level, encouraging a minority to develop their capacity and interest in research …

Embedding Life Cycle Costing In 5d Bim, Dermot Kehily, Jason Underwood,

Articles

Life Cycle Costing (LCC) is the consideration of all ‘relevant’ costs and revenues associated with the acquisition and ownership of an asset. LCC has a number of relevant applications, these include project appraisal; facilities management; procurement and tendering and as a means to evaluate sustainable construction. Although these advantages are well recognised, the process is underutilised due to a number of documented barriers to adoption. Notably these include lack of accurate historical databases; the perceived complexity and time consuming nature of the calculations; lack of a standard LCC methodology, and that clients are not requesting LCC. The research presented is …

Irish Bim Study 2017, Barry Mcauley, Alan Hore, Roger West

Articles

The Construction IT Alliance (CitA) recently published its Global BIM Study as part of its BIM Innovation Capability Programme (BICP). The study sought to identify how BIM was being currently addressed in 27 countries across the globe. The study sought to identify the presence of three key ingredients in these countries:

1. Regulatory requirement for BIM

2. Champions driving BIM

3. Noteworthy publications

The report identified a number of recurring themes that would help to shape Ireland’s BIM programme. The report concluded that Ireland should adopt a programme of partnership between industry and the Irish Government in order to affect …

Iron In The Soul, Noel Brady

Articles

This paper re-examines the iconic use of cruciform columns in the famous Barcelona Pavilion and the other ‘German’ projects of the architect Mies Van der Rohe. It extrapolates for the material itself to construct a theory about the meaning behind their design and iconography linking it to Shinkel and a coded national identify.

Bim Collaboration In Student Architectural Technologist Learning, Malachy Mathews

Articles

This paper is the result of a qualitative case study which investigated the influence of building information modelling (BIM) collaboration on the learning of student architectural technologists based around a studio group project. The purpose of the paper is to disseminate knowledge gained into a new learning environment facilitated by the collaborative properties of a BIM application. A qualitative case study approach has been used to undertake the examination of the learners’ experiences during the project. This approach allowed the author to map the complex interaction between the participants during the stages of the collaborative design project. The paper provides …

Hemp Lime Bio-Composite As A Building Material In Irish Construction, Patrick Daly, Paolo Ronchetti, Tom Woolley Dr

Articles

This report presents the findings of scoping study into the potential application of hemp lime biocomposite as a construction material in Irish context. The research was carried out under STRIVE funding administered under the Irish Environmental Protection Agency (EPA) examining the state of play of hemp lime in construction toward assessing its potential application in Ireland.

The research involved a range of methods, mainly qualitative, including significant literature review and extensive collation of data on hemp lime performance and testing data, semi structured interviews and field work / review of key case studies in Ireland, UK and Europe.

The study …

2:1 The Paper Tube Project, Noel Brady

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Review of applied technological solution to rapid building techniques using paper tube and analogous materials to create space enclosing geodesic systems.

Breaking The Mould 4 : Condensation Risk Analysis – The Standards And The Issues, Joseph Little

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The ‘Breaking the Mould’ series of articles was written to explore the range of issues associated with upgrading single leaf walls with a focus on occupant and building health as much as energy, just as the Home Energy Saving Scheme was launched. A year on from the first article the need for greater understanding and clear guidance for the Industry is greater than ever. This is because the Government’s ‘Energy Demand Reduction Target’ (EDRT), under the 2006 EU ‘Energy Services Directive’, is bringing energy utilities (e.g. ESB, Bord Gáis) into the refurbishment market.

Breaking The Mould 3, Joseph Little

Articles

This article is the third in a series looking at thermal upgrades to single-leaf walls of existing houses. The theme for this article was intended to be an analysis of various drylining options for brick and rubble-built walls of older properties. That will follow. The following events forced a change in focus.

Breaking The Mould 2 : An Analysis Of Single-Leaf Insulation Upgrades, Joseph Little

Articles

This article is the second in a series looking at thermal upgrades to single-leaf walls of existing houses. It compares a range of ways of upgrading masonry single-leaf walls, particularly the ubiquitous hollow block wall, and the impact of those decisions on moisture content, wind- and airtightness, cost and heating. Future articles will look at various drylining approaches for a range of walls including brick walls of various widths.

Breaking The Mould 1 : A Study Of Condensation In Single-Leaf Concrete Wall Upgrades, Joseph Little

Articles

This article is the first of a series looking at upgrade options and issues associated with single-leaf walls of existing houses. This article will focus on insulated drylined concrete block walls of the ubiquitous housing estate house. This will include the findings of software that dynamically models moisture movement through the wall over several years. The article following this will look at a range of options for replacing existing drylining or installing drylining where it never was before, be that for a solid block wall of a 1950s house or a solid brick wall of an 1850s house.

In Transit - Transition Movement Inspires Dramatic Carbon Cuts In House Refurb, Joseph Little

Articles

Drawing on the ‘Energy Descent Action Plan’ he developed at Kinsale, Rob Hopkins and his team launched Transition Town Totnes (in the UK) one and a half years ago. 64 recognised transition communities and 600 other groups (and counting) are now in communication with Rob’s team to launch their versions of this initiative in their communities worldwide.¹ The Transition Ireland Network is coordinated by Davie Philip of Cultivate and several transition initiatives are underway here.

Frame It - Thoughts On Education, Reducing Carbon And Vapour, Joseph Little, Robbie Cousins

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Joseph Little believes timber frame can be the backbone of a new generation of low-carbon, energy-efficient housing, and be used as an intelligent response to Climate Change and fuel prices. But he tells Robbie Cousins that timber frame manufacturers, suppliers and architects need to gear-up and work more closely together if the true potential of this vision is to be realised.

Joseph Little’s chief bugbear is poor construction standards & details on site and the core of this issue is how the knowledge set of architects and builders and how standards are controlled. The seeds of this idea may have …

Baugruppe - Lessons From Freiburg On Cooperative Housing : Lessons From Freiburg On Cooperative Housing, Joseph Little

Articles

Creating Sustainable Communities in the UK and Ireland

The Genesis of Quartier Vauban

Construct Ireland - Lime-Hemp - A Potential Solution To A Concrete Problem, Joseph Little

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This article is intended to act as an exploration and provocation. Why do we build the way we do, what effect does that have? Could we for instance, design and specify buildings that actually benefit the Environment rather than burden and pollute it as currently. Is it possible that the construction of a house could absorb CO₂ thereby transforming new housing estates or apartment buildings into giant absorbers of carbon dioxide? Imagine Ireland being able to count commercial constructions or new housing among its ‘carbon sinks’, in place of Siberian forests or the carbon credits that the Government will …

Construct Ireland - Partial Fill Cavity Walls, Joseph Little

Articles

An examination of whether it still deserves its best practice status in the Irish Construction Industry in light of higher U-Values, construction practices, recent research and cultural pressures.