Bridge-in-a-Box Aluminium Girder

photorealistic ultra-detailed render of a modular 3.2-meter architectural aluminum lightweight girder, designed for a "Bridge in a Box" concept. The girder is made from a rectangular 80x40mm aluminum hollow profile. It is perfectly divided into 5 identical segments, each 640mm long.The prominent design feature is a continuous row of precisely drilled, large 67mm circular cutouts along the entire side wall of all segments, creating a structural Vierendeel truss pattern. There are 7 circular holes per segment, separated by narrow 14.5mm aluminum vertical stems.The render must show one connection point up close: The butt joint between two segments is held together by an internal, precisely fitting aluminum sleeve (240mm long, $74 \times 34\text{ mm}$), visible through the large holes. A single, distinct M6 stainless steel through-bolt with a hex head secures each segment end through the solid 42mm end section. The aluminum has a semi-matte, brushed industrial finish.The entire 3.2m beam rests on two raw concrete support blocks at each end. A 50kg industrial steel test weight hangs from a simple wire loop at the absolute midpoint of the central 3rd segment, causing a slight, calculated 15mm deflection.The beam is suspended in a clean, minimalist, bright engineering design studio atmosphere. The lighting is strong, architectural studio lighting, creating sharp shadows that emphasize the negative space of the circular cutouts. Shallow depth of field, focused on the central load point and the structure of the perforated aluminum wall. Ultra-high resolution, 8k, photorealistic metal textures, structural aesthetics.

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