Single cross-bar for normal, double for reinforced (middle 3 blocks in pic above). Credit to sirbrandino for the awesome top texture.
I hope that he will add that too.
agreed, single bars on the side sounds like a good idea for non-reinforced, all the temporaly stucture scaffold around my work is single angled bar. so having 2 bars would make perfect sence in making it reinforced, i'd still levae it about to be seen through though.
Done. Save the pic, rename to block_0.png
Open your IC2 jar, then the ic2/sprites folder. Backup and replace your block_0.png with this. First attempt at a texture "pack", hopefully I didn't break anything. Always backup!