Abstract: A modular structure kit for Claim 1—Rigi-Frame comprises (i) a plurality of elongate steel square members, (ii) a plurality of rectangular planar vertical side panels, (iii) a plurality of rectangular planar horizontal floor and roof panels, (iv) a plurality of steel U-shaped saddles for the support of horizontal members, and (v) a plurality of steel fins affixed to the tops and bottoms of some horizontal members. Meanwhile, a modular structure kit for Claim 2—Crash Beam comprises (vi) a plurality of T-shaped steel horizontal members with slight outward bow, (vii) two bundled elongate steel rectangular members bound one to another by metal tie rods incremently spaced along entire length of bundled members, (viii) a plurality of vertical elongate steel square members with inner cores that may be filled with poured concrete for enhanced strength, and (ix) a plurality of steel U-shaped saddles for assembled horizontal crash beam assembly.