Question:

When merging slabs, a message prompting failure appears. Why?

Solution:

The premise of merging slabs is that the slabs are tangent to each other, belong to the same element, and have the same attributes (excluding display style).

If a merge failure message appears, you can check the following aspects:

• Check whether the slabs to merge have consistent attributes.
• Check whether gaps exist between slabs.

Related Question:

Why a message stating the slabs to set variable cross-section must be adjacent appears when setting variable cross-sections?

Question:

When setting variable cross-sections for raft foundations, a message stating the raft foundations to set variable cross-section must be adjacent appears. Why?

Solution:

The two slabs to set variable cross-section must have a height difference and their adjacent edges must be tangent. If the message above appears, please check whether there are gaps between the two slabs.