US Egypt Cooperative Research: Use of Cold-Formed Steel in Residential Housing

1103904 该项目支持马里兰州巴尔的摩约翰霍普金斯大学的Benjamin Schafer博士和埃及开罗开罗大学的Metwally Abu-Hamd博士的合作研究项目。 他们计划研究冷弯型钢在住宅中的应用。 近年来，社会开始重新评估我们的建筑环境，以实现更高的性能，特别是减少自然灾害造成的损失，并为建筑环境的长期需求寻求可持续的解决方案。低层建筑，特别是住宅，在世界上所占的比例最大。的建筑股票。在过去，文化规范在很大程度上推动了住宅所采用的材料和系统，今天的情况是不断变化的，存在着走向更科学的性能基础的潜力。一种由于其高强度重量比、高回收含量、易于施工冷弯型钢是一种经过验证的高效材料。该项目将探讨冷弯型钢在美国和加拿大住宅中的应用，并寻求（a）开发新的非专利冷弯型钢系统，具有显著提高建筑技术性能和功能的潜力的成型钢框架，以及（B）提供了一系列探索不同框架解决方案的原型研究，包括新提出的冷弯型钢，从经济、环境和可持续性方面。建筑原型研究集中在埃及和美国的农村和城市地区。研究的框架解决方案包括：（a）埃及的传统框架解决方案（混凝土）和美国（木材）沿着，以及（B）现有的使用商品形状的冷成型钢的重复框架和（c）本提案中开发的用于冷成型钢框架的新系统，该系统采用新颖的，优化的，本论文的研究成果对冷弯薄壁型钢结构在住宅中的应用具有重要意义。这是通过开发一种新的冷弯型钢框架结构系统，并通过仔细的建筑原型研究，特别是权衡工程性能和可持续性指标之间的平衡来实现的。总的来说，这项研究将提供一个模板，如何评估新的框架系统在住宅与世界范围内的观点，并具体展示了这种方法的冷弯型钢框架。美国PI是美国设计规范重大变化的推动力，使新的高效冷弯型钢易于设计，并在探索和提供冷弯型钢框架的新解决方案方面具有独特的地位。埃及PI（Abu-Hamd）在钢结构性能和钢结构施工管理方面拥有长期经验。为研究提供了详细的实施计划。所需的资源在很大程度上利用了这两个机构已经在积极开展的工作。更广泛的影响：社会学的更广泛的影响主要集中在建立一个新的美国-埃及冷成型钢结构合作项目。计划进行人员交流，以加深经验。PI在学术和行业传播方面有着良好的记录，这两种渠道都将用于本研究。具体而言，与行业的联系将包括美国规范和标准组织（AISI-COFS）以及建筑商和从业人员年度会议（Metalcon）。与建筑承包商的合作还应包括为在埃及建造所开发设计的示范模型提供资金。该研究的更大目标是创造符合工程性能和可持续性目标的住宅，其效率比目前的解决方案高得多。与埃及的伙伴关系确保了问题的全面探索，新的解决方案将具有最大的全球利益。该提案得到了美国-埃及联合基金计划的支持，NSF支持美国方面，埃及政府资助埃及方面。

1103904 This project supports a cooperative research project by Dr. Benjamin Schafer at Johns Hopkins University, Baltimore, Maryland and Dr. Metwally Abu-Hamd of Cairo University, Cairo, Egypt. They plan to study Use of Cold-Formed Steel in Residential Housing. In recent years society has begun to re-evaluate our built environment with the objective of achieving higher performance, specifically, to minimize loss attributed to natural hazards and to seek sustainable solutions for long-term needs in the built environment. Low-rise structures in general and residential housing in particular, represent by far the greatest percentage of the world?s building stock. In the past cultural norms largely drove the materials and systems employed for residential housing, today the situation is in flux and the potential to move towards a more scientific performance-basis exists. One material that may see significant increase in use due to its high strength-to-weight ratio, high recycled content, ease of construction, and proven efficiencies is cold-formed steel.This PIs will explores the use of cold-formed steel framing in residential housing in the U.S. and Egyptand seek to (a) develop new non-proprietary systems for cold-formed steel framing with the potentialto significantly increase building technical performance and function, and (b) provides a series ofarchetype studies that explore different framing solutions, including the newly proposed cold-formed steeloption, from economic, environmental, and sustainability aspects. The building archetypes studies focuson both rural and urban areas in Egypt and the U.S. The framing solutions examined include (a) traditional framing solutions in Egypt (concrete) and the United States (timber) along with (b) existing repetitive framing in cold-formed steel using commodity shapes and (c) the new system developed in this proposal for cold-formed steel framing that employs novel, optimized, cross-section shapes and a new dual system for load bearing and lateral resistance.Intellectual Merit: The research will advance significantly the application of cold-formed steel framing to residential housing. This is achieved through development of a new cold-formed steel framing structural system, and through careful building archetype studies that specifically weigh the balance between engineering performance and sustainability metrics. In total the research will provide a template for how to evaluate new framing systems in residential housing with a worldwide view, and specifically demonstrate this approach for cold-formed steel framing. The U.S. PI is the driving force behind significant changes in U.S. design specifications that enable new highly efficient cold-formed steel shapes to readily be designed and is uniquely positioned to explore and provide novel solutions for cold-formed steel framing. The Egyptian PI (Abu-Hamd) has a long experience in the performance of steel structures and construction management of steel structures. A detailed implementation plan is provided for the research. The resources required largely utilize the already active work at both institutions.Broader Impacts: The sociological broader impact is largely focused on the creation of a new U.S.-Egyptian partnership on cold-formed steel structures. Personnel exchanges to deepen the experience are planned for. The PI has a strong record of dissemination to academic and industry, both channels will be utilized in this research. Specifically, outreach to industry will include U.S. codes and standards organizations (AISI-COFS) as well as annual meetings of builders and practitioners (Metalcon). Cooperation with building contractors shall also include financing the building of demonstration models of the developed designs in Egypt. The larger goal of the research is to create residential housing that meets engineering performance and sustainability targets with much greater efficiency than current solutions. The partnership with Egypt insures that the full breadth of the problem is explored and that new solutions will have maximum global benefit.This proposal is supported under the US-Egypt Joint Fund Program where NSF supports the US side and the Government of Egypt funds the Egyptian side.