The joist truss, or truss system, is a vital part of modern concrete and steel structures that plays a crucial role in supporting the loads of roofs and beams. In construction projects, using a joist truss can reduce the weight of the structure, improve execution performance, and decrease construction costs.
A truss is a three-dimensional network of structural members that, by connecting vertical and horizontal or diagonal sections, significantly increases the ability to withstand shear, compressive, and tensile forces compared to simple beams. In a joist truss, diagonal members or those with specific angles are connected to form a lightweight frame with high strength. This design is especially useful in long-span or wide-span roofs, as it distributes the load so concentrated forces are evenly transferred to all columns and the foundation.
Cold-rolled steel or alloy steel is preferred for metal trusses due to their high strength and relatively low weight. Reinforced concrete for the concrete sections combined with steel trusses allows for a lightweight yet durable structural system. Recently, new combinations such as prestressed mortars or composite materials have become popular in special trusses.
Accurate force analysis is necessary for each span; simple beam analysis alone is not enough. Axial forces, shear, and moments due to heavy loads, wind, and earthquakes must be carefully calculated. Precise measurement of sections and choosing durable materials help extend the life of the structure and reduce future repairs.
The connections between diagonal and horizontal members must ensure correct force distribution and prevent unwanted cracks. In construction projects, site access and installation methods can influence the choice of truss type. During implementation, some changes in function or loading may require timely dynamic modeling and design review.

Bonyad Boton Isfahan
Bonyad Boton Isfahan Company, as one of the most active suppliers in the field of building materials and technologies related to concrete in Isfahan province, is engaged in providing specialized services with a professional and customer-oriented approach. The company was founded to improve construction quality, reduce project costs, and enhance safety and sustainability standards in the construction industry, striving to play a significant role in the development of urban, industrial, and residential infrastructure. Bonyad Boton Isfahan, with three decades of experience, is a subsidiary of the Housing Foundation of the Islamic Revolution, active in the production of joists and construction blocks, with an R&D center and standard laboratory to ensure the highest possible quality.
Bonyad Boton Isfahan usually operates with a combination of engineering teams, project analysis, and quality control units to be able to accurately meet customer needs. The engineering team, utilizing up-to-date knowledge in the field of concrete materials, mix optimization, and production methods, provides highly effective construction solutions. The quality control unit conducts multiple tests to monitor the consistency of materials throughout the workshop, from start to finish, ensuring compliance with national and international standards.
One of the primary values of Bonyad Boton Isfahan is commitment to material quality. Necessary laboratory and workshop standards must meet national and international standards to maintain project safety and sustainability. The company also strives to continually improve and enhance operational efficiency by utilizing quality management methods and internal control systems. Observing human and Islamic principles, quality and customer orientation, cooperation in civil projects, preservation and development of human capital, and teamwork are also among the company's most important values.
In urban, road construction, and high-rise building projects, precise implementation of concrete materials and quality management can lead to reduced long-term maintenance costs and increased building lifespan. Bonyad Boton Isfahan provides customized solutions for each project, including designs resistant to environmental conditions and optimum execution scheduling, to always add value for employers and contractors.
With the expanding civil needs of the country and a focus on new technologies in concrete, the future of Bonyad Boton Isfahan looks bright, with an emphasis on research, innovation, and human resource development. Investment in modern laboratories, research collaborations with universities and research centers, and a leading role in the concrete industry and sustainable development through technology and stakeholder partnership can ensure the future of this company.