EACH LEVEL REQUIRES FOUR BEAMS. USE DOUBLE RIVET BEAMS ON TOP AND BOTTOM LEVELS OF ALL UNITS. USE SINGLE RIVET BEAMS ON ALL INTERMEDIATE LEVELS, OR INCREASE CAPACITY BY USING DOUBLE RIVET BEAMS ON...
BEAMS EACH LEVEL REQUIRES FOUR. USE DOUBLE RIVET BEAMS ON TOP AND BOTTOM LEVELS OF ALL UNITS. USE SINGLE RIVET BEAMS ON ALL INTERMEDIATE LEVELS, OR INCREASE CAPACITY BY USING DOUBLE RIVET BEAMS ON...