Portable building

1. A portable building able to transition between a collapsed transport condition and an assembled condition, the portable building comprising:

a rear wall;

a first side wall and a second side wall attached to the rear wall, each of the side walls comprising:

a hinged wall section,

an end section,

a side folding mechanism intermediate the hinged wall section and the end section for folding the hinged wall section along the end section;

a front wall comprising a pair of outer doors;

a pair of front folding mechanisms each front folding mechanism intermediate one of the pair of outer doors and the first or second side wall for folding each outer door along the first or second side wall;

a plurality of sliding roof trusses slidably engaged with the first side wall and the second side wall such that the plurality of sliding roof trusses can slide from a dispersed state along the first or second side wall to a collapsed state; and

a roof mounted over at least a portion of the plurality of sliding roof trusses;

a pair of roof truss elevating apparatuses disposed at the end sections for raising and lowering the sliding roof trusses;

wherein the roof truss elevating apparatus comprises:

a truss link for retaining ends of the sliding roof trusses;

an upper link in a hinged relationship with the truss link;

a lower link in a hinged relationship with the truss link;

a lower member in a hinged relationship with the lower link; and

a pair of side members connected transversely to the lower member,

wherein the truss link is slidably mounted within the pair of side members and the upper link and lower link fold to raise and lower the sliding roof trusses.

2. The portable building of claim 1 , the portable building in the collapsed transport condition dimensioned to fit on a trailer.

3. The portable building of claim 1 , the portable building in the collapsed transport condition dimensioned to fit in a shipping container.

4. The portable building of claim 1 , the front wall further comprising a pair of inner doors whereby the inner doors are openable independent of the outer doors.

5. The portable building of claim 4 , the pair of inner doors being slidably mounted to the outer doors.

6. The portable building of claim 1 further comprising a gable end attached to at least one of the sliding roof trusses.

7. The portable building of claim 1 further comprising at least two floor braces each mounted on one of the walls of the portable building, extending perpendicular to a face of the wall that the at least two floor braces are mounted, for supporting the wall.