<p>In April 2007 we contacted Lennart Augustsson at Designpartners AB in Västerås. He came up with the idea to investigate and evaluate their construction of a interaction beam, CSB-beam. CSB is short for Connector Interaction beam. The beam is based on a horizontal C-profile of high-tensile steel and in the bottom of the profile are vertical flat bar welded so called block connectors. These block anchorsare also made of hightensilesteel. Their task is to create collaboration between the steel and the concrete.</p><p>The dimensioning of the block connectors is done according to the Swedish standard SSENV199411.The purpose of this study is to evaluate and control the formula used for the dimensioning which is found in SS-ENV 1994-1-1.There has been two main parts of this exam work. Part 1: Theoretical preliminary investigations,consisting of calculations and literature studies of block anchors. Part 2: Practical testloads of four prefabricatedCSB-beams.The results of the two parts were thencompared to see if theory corresponded to reality.</p><p>The result shows that the comparison of the formula in Swedish standard, SS-ENV 1994-1-1 can be used for dimensioning of block connectors in interaction beams.</p>

In April 2007 we contacted Lennart Augustsson at Designpartners AB in Västerås. He came up with the idea to investigate and evaluate their construction of a interaction beam, CSB-beam. CSB is short for Connector Interaction beam. The beam is based on a horizontal C-profile of high-tensile steel and in the bottom of the profile are vertical flat bar welded so called block connectors. These block anchorsare also made of hightensilesteel. Their task is to create collaboration between the steel and the concrete. The dimensioning of the block connectors is done according to the Swedish standard SSENV199411.The purpose of this study is to evaluate and control the formula used for the dimensioning which is found in SS-ENV 1994-1-1.There has been two main parts of this exam work. Part 1: Theoretical preliminary investigations,consisting of calculations and literature studies of block anchors. Part 2: Practical testloads of four prefabricatedCSB-beams.The results of the two parts were thencompared to see if theory corresponded to reality. The result shows that the comparison of the formula in Swedish standard, SS-ENV 1994-1-1 can be used for dimensioning of block connectors in interaction beams.