In the CPSD-HL-01017-MTHD standard, developed within the scope of consumer protection and safety by Bureau Veritas, a global organization working in the fields of independent surveillance, inspection, certification and risk prevention of French origin, the requirements for determining the back force for a seat or chairs are explained and a test method is used. is defined. At the end of the test, no structural deterioration or deformation is expected on the back of the seat or chairs under a test force of approximately 1 kg for 68 minute. The test force is applied approximately 41 cm above the seat or chair. For type I and type II chairs, an initial load of 70 degrees is applied to the plane of the backrest in the upright position. For Type III chairs, a load of 90 degrees to the plane of the backrest is initially applied.
Back strength testing is carried out in two ways: backrest and recline mechanism endurance tests. The first test is performed to evaluate the ability of the seat or chairs to withstand fatigue stresses and wear caused by backward force on the backrest. The second test is to evaluate the ability of the tipping mechanism to withstand fatigue stresses and wear from repeated bending.
The back stability test of a seat or chair is performed by applying a horizontal load from front to back to the top of a chair's back until it begins to bend backwards. Generally, approximately 21 kg is loaded on the front edge of the chair before the test is performed. The force required to cause the chair to tilt is multiplied by the height from the platform to the top of the backrest and recorded as a measure of back stability.
Essentially, this standard aims to provide manufacturers and users with a common basis for evaluating the safety, durability, and structural adequacy of general-purpose chairs and stools. Quality control of chairs is crucial to prevent accidents that may occur when users lean back or when the backrest is not sufficiently sturdy. This improves the overall performance of the products and consistently meets customer needs and expectations.
Our organization also provides back strength testing services within the scope of CPSD-HL-01017-MTHD standard, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors.
To get an appointment, to get more detailed information or to request an evaluation, you can ask us to fill in our form and reach you.
