为了使比较几何双对称支持由Mela & heinisuo应用（2014）。为了研究优化梁的重量分别考虑欧洲规范3的设计规则。该方法包括测量的弯曲和剪切阻力。本研究的主要弱点是，它没有考虑到横向扭转屈曲。这是可能的，腹板和法兰是由不同的钢级的混合梁的情况下，因此，也被认为是。在这项研究中所做的实验的强度在于步骤，同时考虑塑料和弹性设计，同时使横截面。除此之外，所有的四类规范的考虑。至于成本函数的情况下，考虑到它考虑到制造，安装和运输。这项研究仍然成功地获得目标的研究结果清楚地表明，高强度钢可用于获得显着减少重量。第二个目标的研究，有关节约成本的结论是有限的成本节约时，参考类别为355美元。这项研究的主要贡献是关于混合截面，它是最经济的解决方案。
To make the comparison geometrically double sym metric support was applied by Mela & Heinisuo (2014). For the purpose of weight the study optimized the beams separately keeping in view the design rules of Eurocode 3. The methodology comprised of measurement of bending and shears resistances. The major weakness of this study is that it did not take into account lateral torsional buckling. It is possible that web and flanges are comprised of different steel grades in case of hybrid beams, therefore those were also considered. Strength of the experimentation done in this study lies in the step that both plastic and elastic designed were taken into account while making cross sections. In addition to this all the four classes of Eurocode were taken into account. As far as the case of cost function is considered it took into account fabrication, erection and transportation. The study remained successful in obtaining the objectives as the results of the study clearly indicate that high strength steels can be used to obtain significant reduction in weight. The second objective of the study that was related to cost savings came into conclusion of limited cost saving when reference category of $355 was used. The major contribution made by the study is regarding hybrid cross sections that it is the most economical solution available.
As 87% of the fuels are non-renewable, it is extremely important to explore the ways that can minimize the consumption of fuels. One way to do so is making such buildings that are highly insulated and in this regard role played by building material in construction, cannot be ignored. Different sorts of building materials are needed to be analyzed and hence strategies to reduce usage of primary fuel resources can be devised by Dodoo et al, (2014).
The methodology of post use lifecycles stages was applied in order to have an idea about association existing among energy and material flows in the process of production. Objective of the study was to explore the influence of insulation material options and some other building materials on the production of energy for buildings.