Chassis guidance system and method for modular buildings

A method for assembling a modular building comprising the steps of:

• (a) providing a plurality of building modules including a placed module positioned on a substrate and a new module to be positioned on the substrate adjacent to and in alignment with the placed module, each respective module comprising:
• a framework defining a top and a bottom of the module, first front supports and second front supports defining a front side of the module, first rear supports and second rear supports defining a rear side of the module, wherein the first front supports and the first rear supports define a first side of the module and the second front support and the second rear support define a second side of the module, each of the first supports and the second supports having a respective top end and a bottom end;
• a forward male guide on the first side of the respective module and extending along the first front support from a first forward height above the bottom of the respective module and upwards towards the top of the respective module;
• a rear male guide on the first side of the respective module and extending along the first rear support from a first rear height above the bottom of the respective module and extending upwards towards the top of the respective module;
• a forward upper female guide on the second side of the respective module and positioned along the second front support at a second forward height above the bottom of the respective module and a forward lower female guide on the second side of the respective module and positioned along the second front support at a third forward height above the bottom of the respective module, wherein the second forward height is shorter than the first forward height and the third forward height is shorter than the second forward height;
• a rear upper female guide on the second side of the respective module and positioned along the second front support at a second rear height above the bottom of the respective module and a rear lower female guide on the second side of the respective module and positioned along the second front support at a third rear height above the bottom of the respective module, wherein the second rear height is shorter than the first rear height and the third rear height is shorter than the second rear height;
• the forward male guide being of a first male guide type, the rear male guide being of a second male guide type, the forward upper female guide and forward lower female guide each being of a first female guide type, the rear upper female guide and rear lower female guide each being of a second female guide type;
• (b) placing the new module in an initial position above the substrate where the bottom of the new module is above the top of the placed module and the first side of the placed module is horizontally offset from the second side of the new module;
• (c) lowering the new module from the initial position to a first position above the substrate in which the forward lower female guide of the new module engages the forward male guide of the placed module and the rear lower female guide of the new module engages the rear male guide of the placed module;
• and
• (d) lowering the new module from the first position to a second position above the substrate in which the forward upper female guide of the new module engages the forward male guide of the placed module and the rear upper female guide of the new module engages the rear male guide of the placed module;
• wherein the first male guide type and first female guide type are compatible and configured so that when a respective first male guide of the first male guide type is engaged with a respective first female guide of the first female guide type, motion of the respective first male guide relative to the respective first female guide is constrained along a lateral axis of the respective first female guide by a first lateral range and along a normal axis of the respective first female guide by a first normal range;
• and
• wherein the second male guide type and second female guide type are compatible and configured so that when a respective second male guide of the second male guide type is engaged with a respective second female guide of the second female guide type, motion of the respective second male guide relative to the respective second female guide is constrained along a lateral axis of the respective second female guide by a second lateral range and along a normal axis of the respective second female guide by a second normal range.