AQUA error

[Gonzalo321]

Hello,

I wonder why this code runs in SOFiSTiK 2023:

+prog AQUA urs:1
head MATERIALS
norm EN 199X-200X
unit 0

stee 1 type S 450 gam 0.0
conc 2 type C  60 fc 0.95*60 Ec 35.0e3 gam 0.0
stee 3 type B 500 gam 0.0

echo full extr
end

+prog AQUA urs:2
head SECTIONS
unit 0

let#ts 0.050
let#ti 0.050
let#tw 0.025
let#H  2.000
let#B  0.800
let#tc 0.300
let#W  1.600

sect 1 titl 'STEEL I-GIRDER'
 poly O mno 1
  vert no y z
   1 0.0            0.0
   2 +#B/2.0        0.0
   3 +#B/2.0        #ts
   4 +#tw/2.0       #ts
   5 +#tw/2.0       #H-#ti
   6 +#B/2.0        #H-#ti
   7 +#B/2.0        #H
   8 0.0            #H
   9 -#B/2.0        #H
  10 -#B/2.0        #H-#ti
  11 -#tw/2.0       #H-#ti
  12 -#tw/2.0       #ts
  13 -#B/2.0        #ts
  14 -#B/2.0        0.0

echo full extr
end

But this one doesn’t:

+prog AQUA urs:1
head MATERIALS
norm EN 199X-200X
unit 0

conc 1 type C  60 fc 0.95*60 Ec 35.0e3 gam 0.0
stee 2 type S 450 gam 0.0
stee 3 type B 500 gam 0.0

echo full extr
end

+prog AQUA urs:2
head SECTIONS
unit 0

let#ts 0.050
let#ti 0.050
let#tw 0.025
let#H  2.000
let#B  0.800
let#tc 0.300
let#W  1.600

sect 1 titl 'STEEL I-GIRDER'
 poly O mno 2
  vert no y z
   1 0.0            0.0
   2 +#B/2.0        0.0
   3 +#B/2.0        #ts
   4 +#tw/2.0       #ts
   5 +#tw/2.0       #H-#ti
   6 +#B/2.0        #H-#ti
   7 +#B/2.0        #H
   8 0.0            #H
   9 -#B/2.0        #H
  10 -#B/2.0        #H-#ti
  11 -#tw/2.0       #H-#ti
  12 -#tw/2.0       #ts
  13 -#B/2.0        #ts
  14 -#B/2.0        0.0

echo full extr
end                   

Kind regards,

Gonzalo

[JFH]

Hello Gonzalo

The error message shows up, because you haven’t defined a material number for the cross section 1. As a result, AQUA sets the default value “1” (concrete). Since the cross-section is now defined with two materials (1 concrete and 2 steel), AQUA treats the cross-section as a composite cross-section and a composite cross-section has to contain both materials.

So please define the material number of the cross section (sect) correctly (see picture).

Best regards
Frederik Höller
Your SOFiSTiK Support Team

[Gonzalo321]

Thak you very much!