美国弗吉尼亚理工大学：建筑材料

美国弗吉尼亚理工大学：建筑材料

Mela＆Heinisuo（2014）试图探索焊接梁中高强度钢的使用方法。这项研究的主要目的是评估性能，并将$ 500和$ 700等级的高强度钢与预定的参考等级$ 355进行比较。为了探索三层木结构建筑系统在能效水平高的多层建筑中的主要能源含义，Dodoo等（2014）的研究不容忽视。研究中包括的三个建筑系统涉及交叉层压木材，模块化预制系统和梁柱结构。
批判
这项研究的力量是作为结果的形式作出的贡献，外部和内部的墙在几乎所有涉及样本的建筑系统中在能源生产中发挥重要作用。观察不同建筑系统的屋顶天花板和地板天花板的情况有显着差异。该研究的另一个重要发现是交叉层压木建筑物的生命周期一次能源平衡最低。研究还发现了隐藏在这一发现背后的原因，并指出这种建筑形式是用石棉层压的，与那些用气密性较差的玻璃绝缘的建筑系统相比，它改善了气密性。人们普遍认为，基于木质的建筑材料有助于降低与燃料相关的成本，但Dodoo等人（2014）的发现是相反的。已经观察到，羊毛基和玻璃基建筑材料更好地用于该目的。然而，建筑材料的选择也取决于它所在的特定区域或地点的要求。

美国弗吉尼亚理工大学：建筑材料

Mela & Heinisuo (2014) tries to explore the ways in which high strength steel in welded beams can be used. The major objective of this study is to evaluate the performance and make comparison of high strength steel of grades $500 and $700 to a pre-determined reference grade of $355. In order to explore the primary energy implications of three timber building systems in case of a multi-storey building that is designed to a high energy-efficiency level, the study of Dodoo et al, (2014) cannot be ignored. The three building systems those were included in the study involved cross laminated timber, modular pre-fabricated systems and beam and column ones.
Critique
The strength of this study is contribution that is made in the form of result that external and internal walls play important role in production of energy for almost all the building systems involved in sample. Significant variation is observed for the case of roof ceilings and floor ceilings across different building systems. Another important finding of the study is that life cycle primary energy balance is lowest for the case of cross laminated timber buildings. The reason hidden behind this finding is also explored by the study and states that this form of building is laminated with stone wool which improves air tightness as compared to those building systems that are insulated with glass which has lower performance in terms of air tightness. It is commonly perceived that wood based building materials contribute to reduce the costs associated with fuels but the findings of Dodoo et al, (2014) are opposite. It has been observed that wool based and glass based building materials serve the purpose better. However, the selection of building materials also depends on the requirements of particular region or locality in which it is located.