More specifically,
Front: First violins, second violins, cellos, violas, bass (could be slightly back), cellos and violas can be exchanged OR
First violins, cellos violas second violins, bass.
Then Woodwinds L to R: Piccolo, flutes, oboes, English horn
Next row: bass clarinet, clarinet, bassoon, contra bassoon
Last row before percussion L to R: Fr. horns (L of center), trumpets, trombones, tuba
Harps can be anywhere, but often at extreme R or L.
Percussion can be anywhere behind brass depending upon the shape of the performance/recording space.
Front: First violins, second violins, cellos, violas, bass (could be slightly back), cellos and violas can be exchanged OR
First violins, cellos violas second violins, bass.
Then Woodwinds L to R: Piccolo, flutes, oboes, English horn
Next row: bass clarinet, clarinet, bassoon, contra bassoon
Last row before percussion L to R: Fr. horns (L of center), trumpets, trombones, tuba
Harps can be anywhere, but often at extreme R or L.
Percussion can be anywhere behind brass depending upon the shape of the performance/recording space.