Concrete building construction: Lower right is steel frame shoring for concrete structure to be cast at midheight of photo. Left half is midpoint of forming and shoring for next floor of the concrete structure, with formwork at top and vertical steel frame reshoring at midheight to distribute weight of new concrete between the two concrete floors now in place. Formwork for next floor of concrete structure. Right rear of photo is formwork for vertical concrete walls, with temporary catwalk on the outside for access by workers. Stored, stacked steel shoring is lower right. Science Instruction Center Building, University of Michigan, Ann Arbor, 2002.

Concrete building construction: Lower right is steel frame shoring for concrete structure to be cast at midheight of photo. Left half is midpoint of forming and shoring for next floor of the concrete structure, with formwork at top and vertical steel frame reshoring at midheight to distribute weight of new concrete between the two concrete floors now in place. Formwork for next floor of concrete structure. Right rear of photo is formwork for vertical concrete walls, with temporary catwalk on the outside for access by workers. Stored, stacked steel shoring is lower right. Science Instruction Center Building, University of Michigan, Ann Arbor, 2002.