Masonry construction: Lull 8K-42 rough terrain forklift lifts and places mortar box on material platform of Hydro-Mobile self-lifting scaffold. Worker on scaffold holds left guardrail gate open after already having opened right guardrail gate. Bricklayers standing on the bricklayer level are laying brick. Lull 8K-42 has 4-wheel drive, 3-way steering, and 8,000 lb capacity, and its hydraulic telescoping boom has 42 ft reach. Biomedical Engineering, North Campus, University of Michigan, Ann Arbor, 2004.