open-sided metal pavilion 3d model

Create a highly realistic and accurate 3D model of a large freestanding open-sided metal roof structure. Overall dimensions: 75 ft long x 72 ft wide. Roof: Symmetrical gable roof. 12-degree roof pitch. 26-gauge corrugated metal roofing. Continuous ridge cap. No exterior walls. Structure: Use 6" x 6" square structural steel tubing with 1/4" wall thickness for the main columns and structural framing. Clearly model the square hollow steel tubing. DO NOT use I-beams or W-beams. Include: Steel columns Main roof frames Roof rafters Steel purlins Structural bracing Connection plates Bolted and welded connections Column base plates Anchor bolts The building must remain completely open on all four sides. Industrial steel construction. Realistic proportions. Clean structural geometry. Dark painted structural steel. Galvanized metal roofing. Generate the complete building as an editable 3D model. No vehicles. No people. No equipment. No surrounding buildings. No decorative objects