I have deined a wire fabric within cross section and I am trying to define one sheet of A393 wire fabric mesh on plan by selecting 'Wire fabrics distribution' but it automatically assumes I want more than one sheet - and I have to enter a lap splice distance (although there won't be any lap splice).
How can I define just one sheet (it'll be 1500x1500)?
If I understood your question correctly...
I draw area for placing reinforcement manually (big area), click OK, then, choose desired mesh and put it in the drawn area. OK.
Then copy that mesh, and paste it outside reinforcement area. You can copy and resize those (copied) mehes as much as you want, program count's them.
Also, you can now delete reinforcement placing area (together with the first placed mesh).
Hope this helps