General
Mechanical Engineering
-
Introduction to Mechanical Engineering
-
History of Mechanical Engineering
-
Mechanics
-
Materials Science
-
Statics
-
Dynamics
-
Strength of Materials
-
Fluid Mechanics
-
Heat Transfer
-
Thermodynamics
-
Manufacturing and Machining
-
Mechatronics
-
Future of Mechanical Engineering
-
Careers in Mechanical Engineering
Legacy Course
Trusses and Frames
Trusses and frames are structures composed of interconnected members that are used to support loads. They are commonly used in the design of structures and machines in fields such as mechanical engineering, civil engineering, and aerospace engineering.

A truss is a structureThe organisation and order of information in a text. in which all of the members are in tension or compression. Trusses are known for their ability to span long distances with a minimal amount of material. They are typically composed of triangular shapes made up of straight members connected at joints, or nodes. The members are usually made of steel or aluminum, and they are designed to resist tension or compression.
Trusses are used in a variety of structures such as bridges, roofs, and towers. They are highly efficient structures as they transfer loads through the members, which results in a minimal amount of deformation. Trusses are also lightweight, easy to construct, and have a high strength-to-weight ratio.
A frame is a structure in which the members are subjected to both tension and compression. They are used to support loads in more complex configurations. Unlike trusses, frames do not rely on tension or compression alone to resist loads. Instead, they use a combination of tension, compression, and bending to support loads.
Frames are commonly found in buildings, bridges, and machines. They are more versatile than trusses and can be used in a variety of structures. They are also more complex than trusses and require more detailed analysis to determine the forces in the members and the reaction forces at the supports.
The analysis of trusses and frames involves the use of statics principles to determine the forces in the members and the reaction forces at the supports. This involves drawing free body diagrams, calculating the net force and net torque acting on the object and equating them to zero, and solving the equilibrium equations.
Continue the lesson
This section is available to learners with course access. Continue learning with Knowness to unlock the full explanation, examples, revision tools, and progress tracking.
The remaining lesson content includes further guided explanation, important learning points, and supporting interactive material designed to help you understand and revise this topic.
Unlock this topic to view the full activity, worked examples, common mistakes, and additional revision support.
More content available
Knowness lessons are structured to build understanding step by step. Create an account or upgrade your access to continue from this point.
This preview does not include the hidden lesson text, answers, explanations, or embedded interactions.
Continue learning with Knowness
Sign up to access the full lesson, predicted grades, revision tools, progress tracking, and more.
Create a free account