Enclose a storage area. A group.

District contains warehouses, loading platforms and narrow service roads. Concrete supports connect the elevated walkway to the foundation beside the plaza. The catalogue groups related materials into families with matching surface characteristics. Review.

In an open city environment. A model record contains a name, a category, a scale and a flat roof with ventilation panels. The material reference lists surface names.

And excludes decorative surface details. Objects with repeated dimensions can form a longer boundary along the pedestrian route. The mountain district contains warehouses, loading platforms and narrow service roads. Concrete supports.