Architectural Characteristics of Different Configurations Based on New Geometric Determinations for the Conoid

The aim of this article is to orient the evolution of new architectural forms offering up-to--date scientific support. Unlike the volume, the expression for the lateral area of a regular conoid has not yet been obtained by means of direct integration or a differential geometry procedure. In this type of ruled surface, the fundamental expressions I and II, for other curved figures have proved not solvable thus far. As this form is frequently used in architectural engineering, the inability to determine its surface area represents a serious hindrance to solving several problems that arise in radiative transfer, lighting and construction, to cite just a few. To address such drawback, we conceived a new approach that, in principle, consists in dividing the surface into infinitesimal elliptic strips of which the area can be obtained in an approximate fashion. The length of the ellipse is expressed with certain accuracy by means of Ramanujan’s second formula. By integrating the so-found perimeter of the differential strips for the whole span of the conoid, an unexpected solution emerges through a newly found number that we call psi (ψ). In this complex process, projected shapes have been derived from an original closed form composed of two conoids and called Antisphera for its significant parallels with the sphere. The authors try to demonstrate that the properties of the new surfaces have relevant implications for technology, especially in building science and sustainability, under domains such as structures, radiation and acoustics. Fragments of the conoid have occasionally appeared in modern and contemporary architecture but this article discusses how its use had been discontinued, mainly due to the uncertainties that its construction posed. The new knowledge provided by the authors, including their own proposals, may help to revitalize and expand such interesting configurations in the search for a revolution of forms.

Innovative and Sustainable Materials in Architectural Engineering

The advantages of fiber-reinforced polymer (FRP) composite material have attracted architectural engineers as alternative construction materials. FRP materials are noncorrosive, lightweight, exhibit high tensile strength, and stiffness, are easily fabricated and constructed. For architectural applications, FRP materials are fabricated using a polymer matrix, such as epoxy, vinyl ester, or polyester, and reinforced with various grades of carbon, glass, and/or aramid fibers. In this study, FRP coupons have been tested under axial tensile load to evaluate the strength of these materials for architectural application. Coupon specimens were cut from two different types of glass-FRP (GFRP) tubes namely: Type I and II, the two types had constant internal diameter equal to 152 mm. The GFRP tubes Type I consist of six layers with (±60°) fibers angles oriented mainly in the hoop direction with respect to the longitudinal axis of the tubes, the total thickness is 2.65 mm. While GFRP tubes I consist of fourteen layers with different fibers angles (±65, ±45, ±65) and the total thickness are 6.4 mm. The test results were presented and discussed. The strength of the coupon showed an acceptable level to be used for architectural application. Some of the FRP composites successful applications are briefly presented and discussed to provide the appropriate background for the application of FRP composites in architectural engineering. The promising results presented for the GFRP materials represent a further step toward architectural application.

Building Information Modelling: An analysis of the methods used to streamline design-to-construction in New Zealand

<p>The following study explores and investigates the current methods New Zealand (NZ) Architectural, Engineering and Construction (AEC) firms use to enable effective BIM coordination in their projects. The purpose was to gain and contribute knowledge of the various methods for successful BIM delivery, as well, as to bridge the gap between academia and industry for a greater understanding of BIM use in an NZ context. A qualitative research approach was carried out and comprised of semi-structured interviews in which eight industry participants across the design-to-construction supply chain were selected and interviewed. From the results, the different methods identified were: BIM-to-fabrication; change of procurement methods; and incorporating BIM Collaboration Format (BCF) plugin platforms. These methods identified contribute to knowledge for future researchers to undertake; predominantly to provide direction and recommendations to explore each method in an NZ industry context further. Further discussions of the results identify that although the different methods can contribute to better BIM coordination, the success of a BIM model to be delivered effectively is dependent on two significant factors. The factors are; firstly, to capture the BIM requirements and needs of the client to establish well-defined deliverables in the BEP; and secondly, to ensure that the project team are to understand their role and responsibilities right throughout the project. This was a crucial finding in this thesis as although the methods are effective in enabling greater BIM coordination; ultimately it comes down to BIM understanding and expertise from key project stakeholders; which brings the notion of the issue back to the root of the problem. Other key findings from this thesis indicate a positive future for BIM within the NZ AEC industry, with many of the participant firms recognised to be proactive and open to incorporating BIM into their projects. Though the signs are encouraging, discussions with industry participants still express their concerns on needing to align the understanding of BIM between key project stakeholders. Therefore, an education piece which focuses on the client and their understanding of BIM in an NZ context is suggested for future research. This thesis also presents academia with valuable industry BIM workflow diagrams which the author has either illustrated or been provided by participants.</p>

Building Information Modelling: An analysis of the methods used to streamline design-to-construction in New Zealand

<p>The following study explores and investigates the current methods New Zealand (NZ) Architectural, Engineering and Construction (AEC) firms use to enable effective BIM coordination in their projects. The purpose was to gain and contribute knowledge of the various methods for successful BIM delivery, as well, as to bridge the gap between academia and industry for a greater understanding of BIM use in an NZ context. A qualitative research approach was carried out and comprised of semi-structured interviews in which eight industry participants across the design-to-construction supply chain were selected and interviewed. From the results, the different methods identified were: BIM-to-fabrication; change of procurement methods; and incorporating BIM Collaboration Format (BCF) plugin platforms. These methods identified contribute to knowledge for future researchers to undertake; predominantly to provide direction and recommendations to explore each method in an NZ industry context further. Further discussions of the results identify that although the different methods can contribute to better BIM coordination, the success of a BIM model to be delivered effectively is dependent on two significant factors. The factors are; firstly, to capture the BIM requirements and needs of the client to establish well-defined deliverables in the BEP; and secondly, to ensure that the project team are to understand their role and responsibilities right throughout the project. This was a crucial finding in this thesis as although the methods are effective in enabling greater BIM coordination; ultimately it comes down to BIM understanding and expertise from key project stakeholders; which brings the notion of the issue back to the root of the problem. Other key findings from this thesis indicate a positive future for BIM within the NZ AEC industry, with many of the participant firms recognised to be proactive and open to incorporating BIM into their projects. Though the signs are encouraging, discussions with industry participants still express their concerns on needing to align the understanding of BIM between key project stakeholders. Therefore, an education piece which focuses on the client and their understanding of BIM in an NZ context is suggested for future research. This thesis also presents academia with valuable industry BIM workflow diagrams which the author has either illustrated or been provided by participants.</p>