One layer reinforcement

For 2D members of type Wall or Shell, it is possible to define reinforcement consisting of just one layer located in the middle of the member.

This layer holds reinforcement bars in two perpendicular directions. Each of the directions can use different diameter. The bars are place "on the middle-plane" of the member. It means that if each direction of the reinforcement uses different diameter, the centre of gravity of the reinforcement does not coincide with the centre of gravity of the member.

If the project contains only 2D members with one-layer reinforcement, the corresponding property dialogues and Document tables are filtered to show only the data relating to this layer of reinforcement. On the other hand, if the project contains also 2D members with "normal" reinforcement, the property dialogues and Document tables contain items and columns relating to upper and lower surface of the reinforcement and data relating to the one-layer reinforcement are shown in items/rows for lower surface.

That a particular member should have one-layer reinforcement can be defined in member data for that particular member. If a member uses one-layer reinforcement, it is not possible to run crack proof for that particular member.

However, reinforcement bars or meshes can be input on such members. It is however necessary to ensure that the reinforcement is placed to the middle plane of the member. Otherwise, the program is not able to calculate the required reinforcement areas. The easiest way to ensure this is to use action button Load from member datain the dialogue for the input of 2D reinforcement. This action button automatically places the reinforcement to the middle of the member.