A modular building section, comprising:
- an elongate roof portion comprising rafters that support a building section roof defined by an exterior side of the roof portion and extending in longitudinal directions between a first end of the roof portion and an opposite second end of the roof portion with the roof portion first end and the roof portion second end at all times interconnected through the roof portion, the roof portion having a roof axis across which the building section roof continuously extends in the longitudinal directions, said roof axis extending in directions substantially perpendicular to the longitudinal directions and located along the roof portion in the longitudinal directions centrally between the first end of the roof portion and the second end of the roof portion;
- and
- a first leg and a second leg at all times interconnected through the roof portion, each of the first leg and the second leg respectively having a length that extends between an upper end and a lower end of the respective first leg or second leg, the first leg pivotally attached about a first pivot axis to the roof portion proximate the roof portion first end, the second leg pivotally attached about a second pivot axis to the roof portion proximate the roof portion second end, the first pivot axis and the second pivot axis substantially parallel to each other and to said roof axis, and the respective distance directly between said roof axis and the first pivot axis or the second pivot axis is at all times fixed;
- wherein said modular building section has a roof portion extended condition in which the first leg and the second leg are disposed beneath the roof portion, and said modular building section in the roof portion extended condition has an included angle defined as being within the range between 0° and 180°, the included angle extending about said roof axis and between a pair of positions that are located on the roof portion and spaced from each other in the longitudinal directions;
- wherein the included angle has a maximal value and a minimal value, and the included angle minimal value is a constraint structurally imposed by the rafters;
- wherein said modular building section has an installed state at a construction site in which the roof portion, and the first leg and the second leg, respectively define a roof and opposing walls of an immovable modular clearspan building as erected on and permanently affixed to the construction site, and in the installed state the included angle is maintained substantially at the minimal value;
- wherein the first leg and the second leg each has a stowed position in which the length of the respective first leg or second leg extends generally in the longitudinal directions and the roof portion is in vertical superposition with the length of the respective first leg or second leg;
- wherein each of the first leg and the second leg has an expanded position in which the length of the respective first leg or second leg depends from the roof portion and extends in generally vertical directions;
- wherein, in the roof portion extended condition, the first leg and the second leg are moveable independently of each other from their respective stowed positions to their respective expanded positions under the influence of gravity during lifting of the roof portion relative to the lower end of the first leg and the lower end of the second leg with the lower end of the first leg and the lower end of the second leg each being unattached to the construction site;
- wherein said modular building section has unrestrained movement over the construction site and into the installed state with the first leg and the second leg in their respective expanded positions and the included angle substantially at the minimal value;
- and
- wherein, in the roof portion extended condition, the proximity between the first pivot axis and the second pivot axis is limited solely by the roof portion rafters irrespective of the position of the first leg or the position of the second leg.