A construction rack , comprising: a. a first floor , planar and long in relation to its width, including: i. first end region having a first mount structure , ii. a second end region , opposite the first end region, iii. a middle region between the first end region and the second end region, and iv. a first side of the first floor from which a first plurality of wheels extends, the first plurality of wheels including a first pair of wheels that extend from the first end region , a second pair of wheels that extend from the second end region and a third pair of wheels that extend from the middle region ; and b. a solid second floor extending orthogonally from the second end region of the first floor opposite the first side of the first floor and including: i. a second mount structure extending opposite the second end region ; and ii. a second plurality of wheels extending therefrom opposite the second end region of the first floor and positioned and sized such that when the first floor is tipped, while the first plurality of wheels is engaged with a surface, from horizontal to vertical with the solid second floor being on the bottom, the second plurality of wheels engage with the surface as the first set of wheels disengage with the surface, whereby the first mount structure is a pair of aperture plates disposed opposite each other and the third pair of wheels are larger in diameter than each of the first pair of wheels and the second pair of wheels . a. a first floor , planar and long in relation to its width, including: i. first end region having a first mount structure , ii. a second end region , opposite the first end region, iii. a middle region between the first end region and the second end region, and iv. a first side of the first floor from which a first plurality of wheels extends, the first plurality of wheels including a first pair of wheels that extend from the first end region , a second pair of wheels that extend from the second end region and a third pair of wheels that extend from the middle region ; and i. first end region having a first mount structure , ii. a second end region , opposite the first end region, iii. a middle region between the first end region and the second end region, and iv. a first side of the first floor from which a first plurality of wheels extends, the first plurality of wheels including a first pair of wheels that extend from the first end region , a second pair of wheels that extend from the second end region and a third pair of wheels that extend from the middle region ; and b. a solid second floor extending orthogonally from the second end region of the first floor opposite the first side of the first floor and including: i. a second mount structure extending opposite the second end region ; and ii. a second plurality of wheels extending therefrom opposite the second end region of the first floor and positioned and sized such that when the first floor is tipped, while the first plurality of wheels is engaged with a surface, from horizontal to vertical with the solid second floor being on the bottom, the second plurality of wheels engage with the surface as the first set of wheels disengage with the surface, i. a second mount structure extending opposite the second end region ; and ii. a second plurality of wheels extending therefrom opposite the second end region of the first floor and positioned and sized such that when the first floor is tipped, while the first plurality of wheels is engaged with a surface, from horizontal to vertical with the solid second floor being on the bottom, the second plurality of wheels engage with the surface as the first set of wheels disengage with the surface, <EOS>