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。该公司目前在埃德蒙顿的工厂生产镶板地板、镶板墙壁和体积屋顶模块。这些面板和模块随后被运送到施工现场，并连接在一起形成最终的结构。与传统的木棒建造方法相比，工厂的预制提供了更快、更好的房屋建造质量。作为行业的领导者，ACQBUILT不断努力改进建筑技术，使高品质的住房更实惠。ACQBUILT的初步研究表明，如果将模块化屋顶结构替换为面板单元，则可以进一步提高建筑效率并降低其住房系统的生产成本。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，由于轻金属板屋架的专业设计和制造过程，用于制造屋顶模量的屋架是从桁架制造商那里购买的，这增加了房屋包装的成本。然而，为了最大限度地节省成本，并确保新系统符合建筑规范要求，还需要进一步的研究来设计这种新的板式屋顶系统，因为它会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，传统的建筑方法得到了国家和省建筑规范的认可。本项目的主要目的是开发板式屋顶系统的设计，以取代传统的基于桁架的木框架桁架系统。板式屋面系统的设计将考虑到ACQBUILT预制生产线的制造限制、现场可建造性、运输限制和保温材料的放置。开发的设计将在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.