Furniture design
The structural tectonics of the triArc are a composition of CNC fabrication and the lamination of birch plywood. Digital fabrication allows for the accuracy of the manufacturing process. Through the utilization of the CNC mill each part receives an exacted construction. With each part having been milled to the computer specifications we can assure the structural stability of the overall piece.
Structural balance is achieved through both material selection and the equilibrium of force. The seat pan cantilever has a 1:1.3 ratio at the end of the moment arm, but due to the seat rake the force will be normally located at the 1:2.2 point. This drastically reduces the moment force and helps to transfer the load to the descending legs. Due to the plywood lamination the lateral force potential is near zero because of design and the strength of the material.
Birch plywood was selected for the material due to its high strength. The plywood material will allow for load resistance in two directions. This will help transfer the users weight to the floor while preventing the shear forces in the cantilever.
The comfort of the chair has been derived from the study of the human body and its scale. The chair is designed to be a reading and conversation piece that will be used in the living space of my apartment. As a result of the design intent we can eliminate the task prone positions from the design and focus of the positions that are more relaxing to the human body. A slightly reclined position was selected as the most effective.
Measurements of my body were taken to find the proper seat height and depth. Research shows that the human body when placed in a slightly reclined position has a seat back angle between 45-80 degrees with a 10-20 degree seat pan inclination. These measurements define the triArc’s anthropometrics.
Structural balance is achieved through both material selection and the equilibrium of force. The seat pan cantilever has a 1:1.3 ratio at the end of the moment arm, but due to the seat rake the force will be normally located at the 1:2.2 point. This drastically reduces the moment force and helps to transfer the load to the descending legs. Due to the plywood lamination the lateral force potential is near zero because of design and the strength of the material.
Birch plywood was selected for the material due to its high strength. The plywood material will allow for load resistance in two directions. This will help transfer the users weight to the floor while preventing the shear forces in the cantilever.
The comfort of the chair has been derived from the study of the human body and its scale. The chair is designed to be a reading and conversation piece that will be used in the living space of my apartment. As a result of the design intent we can eliminate the task prone positions from the design and focus of the positions that are more relaxing to the human body. A slightly reclined position was selected as the most effective.
Measurements of my body were taken to find the proper seat height and depth. Research shows that the human body when placed in a slightly reclined position has a seat back angle between 45-80 degrees with a 10-20 degree seat pan inclination. These measurements define the triArc’s anthropometrics.