Development of panelized roof system for single-family houses**

ACQBUILT是北美领先的非现场住宅建筑商之一。该公司目前正在其位于埃德蒙顿的工厂生产镶板地板、镶板墙和体积屋顶模块。然后，这些面板和模块被运输到施工现场，并连接在一起形成最终结构。与传统的棍式建造方法相比，工厂预制提供了更快、更高质量的房屋建造方法。作为行业的领导者，ACQBUILT不断努力改进建筑技术，让高质量的住房变得更实惠。ACQBUILT的初步研究表明，如果用嵌板单元取代模块化屋顶结构，其住房系统的建设效率和生产成本将进一步提高。这是因为体积屋顶模块需要在工厂中有相当大的空间来生产，并且由于它们在运输车辆中占据的体积，运输成本相对较高。此外，用于制造屋顶模块的屋顶桁架是从桁架制造商那里购买的，这是因为轻型金属板屋顶桁架的专门设计和制造工艺，这增加了住房套装的成本。然而，需要进一步研究设计这种新的嵌板屋顶系统，以最大限度地发挥其节约成本的潜力，并确保新系统符合建筑法规的要求，因为它将偏离传统的建筑方法，由于其为加拿大人提供安全和负担得起的住房的悠久历史，国家和省建筑法规承认这一点。该项目的主要目标是发展板式屋盖体系的设计，以取代传统的以桁架为基础的木框架桁架体系。嵌板屋顶系统的设计将考虑ACQBUILT预制生产线的制造限制、现场可建造性、运输限制和绝缘材料的放置。所开发的设计将在一个实际的房屋建设项目中实施，以评估其工厂制造效率和现场可建造性。

ACQBUILT is one of the leading off-site home builders in North America. It is currently producing panelized floors, panelized walls and volumetric roof modules at its factory in Edmonton. These panels and modules are then transported to the construction site and connected together to form the final structure. Prefabrication in the factory offers faster and better quality house construction compared with the traditional stick-built approach. As a leader in the industry, ACQBUILT is continuously striving for improved construction technologies and making high quality housing more affordable. ACQBUILT's preliminary research has shown that further improvement in construction efficiency and reduction in production costs for its housing systems can be achieved if the modular roof structure is replaced by panelized units. This is because the volumetric roof modules require considerable space in the factory to produce and a relatively high transportation cost due to the volume they occupy in a transportation vehicle. Furthermore, the roof trusses used in fabricating the roof modulus are purchased from truss fabricators due to the specialized design and fabrication processes of light metal plate roof trusses, which adds to the cost of the housing package. However, further research is required to engineer this new panelized roof system in order to maximize its cost saving potential and to ensure that the new system meets the building code requirements as it would deviate from the traditional construction method, which is recognized by the national and provincial building codes due to its long history of providing safe and affordable housing for Canadians. The main objective of the proposed project is to develop design of panelized roof system to replace the traditional truss-based wood frame truss system. The design of the panelized roof system will take into consideration the manufacturing limitations of ACQBUILT prefabrication production line, site buildability, transportation limitations and placement of insulation materials. The developed design will be implemented in an actual house construction project to evaluate its factory fabrication efficiency and site buildability.