3rd Year Construction Technology



CIOB Funding

Student Prize for best Student Project Surveys for 2nd Year Construction Management Degree DIT Bolton Street

European Study Visit – Pisa 2009

Introduction

Twenty students from the second year Construction Management Degree DIT Bolton Street recently completed their annual European Study Tour to Pisa in Italy. The aim of the study visit was to introduce the second year students to the principles of building conservation in other EU states, in this case Pisa in Italy. This was achieved through an onsite survey of specific buildings in the city giving the students an insight into restoration techniques and the methods of construction used in these buildings over their lifespan. The Chartered Institute of Building in Ireland, Eastern Centre awarded €400 to the best student projects, which was identified by a DIT panel.

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Figure 1 Students surveying Pisa Tower

Project Description

The students were required to carry out a survey of the elevation of the building identified in the following section using laser and image techniques, producing a full set of 3d CAD drawings. The students worked in groups of five and produced a final 3D survey.

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Figure 2 Students surveying Pisa Tower

The data for the survey in the form of laser scans; photo and CAD surveys of the historic structures were downloaded from the WEB site of CyArk a non-profit entity, (). CyArk’s mission is to digitally preserve cultural heritage sites through collecting, archiving and providing open access to data created by laser scanning, digital modeling, and other state-of-the-art technologies. The CyArk's database allowed the students to access information such as the data detailed in Figure 3. This is a powerful learning tool made available to the students.

Stage 1: Historic research and background of identified building typology, document based on Architectural data which detail: geometry and principles of the external and internal structure and fabric construction; positioning of openings; proportional relationship of the building's elements; and classical detailing.

Stage 2: Photographic and laser survey of the building, Digital photography was used for 2D/3D modeling and independent data collection. The 2D modeling was achieved through taking total station and laser hand held measurements on the object and rectifying the images to scale using target measurements on the building. The students were then introduced to basic 3D modeling. The 3D modeling of objects and extraction of measurement data was carried using specialized software.

Step 3: Complete a measured survey of the external facade and description of materials and construction techniques. The students were required to build a 3D vector model of the structure using constructed library parts see example in figure 3 below.

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Figure 3 A sample of the data available survey drawings and laser scans of the Campanile

Lecturers – Project Team

Maurice Murphy – Conservation Laser Scanning expert Maurice.Murphy@dit.ie

Alain Chenaux – Survey Expert Total Station Alain.Chenaux@dit.ie

Ger Flynn – Project Admin, student organization gerald.flynn@dit.ie

Project Outcomes

1. This project was assessed as course work in the Construction Technology 2A module as described in the course document.

2. The Student surveys will made available to the CyArk site, (), profiling the DIT student’s work globally.

3. Funding for student awards for the best student surveys was awarded by Eastern Centre CIOB in Ireland and an award ceremony and full report are now complete and credited to the sponsors the CIOB.

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