Structural system

types of apartment buildings

class of self-supporting structure made of three or more beams and which requires no center support to create roofs, bridges or similar structures

thumb|150px|An A-frame used as Shear legs|shears on top of an M32 armored recovery vehicle thumb|150px|A sawhorse can be formed by connecting two A-frames along the length of a beam thumb|150px|A-frame utility pole in Germany