Systems and methods for the construction of structures

A construction system for constructing a structure on a foundation, the construction system comprising:

• a printing assembly configured to deposit an extrudable building material to form a structure;
• a supply tank configured to hold the extrudable building material therein, wherein the supply tank is coupled to the printing assembly;
• a material delivery system coupled to the supply tank, wherein the material delivery system comprises:
• a water tank;
• a hopper configured to hold dry ingredients of the extrudable building material therein;
• and
• a mixing unit configured to receive water from the water tank and dry ingredients from the hopper, wherein the mixing unit includes an agitator that is configured to mix the water and the dry ingredients together to form the extrudable building material;
• an extrudable building material valve coupled between the mixing unit and the supply tank;
• and
• a controller connected directly to an agitator driver, a water pump driver, an auger driver and the extrudable building material valve, wherein the controller is not coupled to a display for viewing output from the controller, and wherein the controller is configured to:
• measure a load imparted to the agitator driver coupled to the agitator by the extrudable building material;
• selectively actuate the water pump driver at times needed to add additional water to the mixing unit from the water tank to control viscosity of the extrudable building material by sending a first signal from the controller to the water pump driver coupled between the water tank and the mixing unit when the load is above a first threshold;
• selectively actuate the auger driver at times needed to add additional dry ingredients to the mixing unit from the hopper to control viscosity of the extrudable building material by sending a second signal from the controller to the auger driver coupled to the hopper when the load is below a second threshold;
• and
• selectively actuate the extrudable building material valve among a plurality of positions between a fully closed position to a fully open position to control volume of the extrudable building material delivered to the printing assembly based on the controlled viscosity of the extrudable building material delivered from the mixing of water and dry ingredients to the printing assembly.