Systems and methods for the construction of structures

A method of constructing a personal dwelling structure, the method comprising:

• (a) providing water to a mixing unit;
• (b) providing dry ingredients of an extrudable cementitious building material to the mixing unit;
• (c) mixing the water and the dry ingredients within the mixing unit with an agitator;
• (d) measuring a torque imparted to the agitator with a controller;
• (e) determining that the torque measured in (d) is either above a first threshold or below a second threshold that is lower than the first threshold with the controller;
• (f) doing one of:
• (f1) providing additional water to the mixing unit by actuating a water pump with the controller if the torque measured in (d) is determined to be above the first threshold;
• or
• (f2) providing additional dry ingredients to the mixing unit by actuating an auger within a hopper holding the dry ingredients with the controller if the torque measured in (d) is determined to be below the second threshold;
• (g) providing the extrudable cementitious building material from the mixing unit to a printing assembly and providing the extrudable cementitious building material to a supply tank coupled to the printing assembly;
• (h) maneuvering a vertical support assembly coupled to the printing assembly by biasing a first block in opposite co-linear direction away from a second block that is coupled to a vertical support assembly for biasing in a lateral, horizontal direction rotating gear driven vertical teeth coupled to the first block against corresponding vertical teeth extending along a sidewall surface of a rail assembly mounted to a reinforced concrete foundation;
• (i) concurrent with (h), moving either an outer or an inner row of rollers on the bottom of the vertical support assembly along an angle member of the rail assembly;
• and
• (j) extruding the extrudable cementitious building material from the printing assembly during (h) and (i) by:
• (i) actuating a valve within an outflow assembly to a closed position;
• (ii) actuating a building material pump to initiate pumping of the extrudable cementitious building material from the supply tank toward the printing assembly;
• (iii) detecting if a predetermined amount of time has elapsed after actuating the building material pump, the predetermined amount of time selected to correspond to the length of time needed for the building material pump to fill a supply conduit between the building material pump and the outflow assembly with extrudable cementitious building material, such that the predetermined amount of time is based on a length of the supply conduit, a flow rate of the building material pump, and a viscosity of the extrudable cementitious building material;
• (iv) opening the valve if the predetermined amount of time has elapsed after actuating the building material pump;
• (v) actuating the printing assembly to traverse alongside a foundation to deposit a layer of the cementitious building material from the open valve;
• (vi) determining a post turn-off printing length value to correspond to a printing length of the layer of the cementitious building material to be printed after the building material pump is turned off via a controller, the post turn-off printing length value being based on the length of the supply conduit, the flow rate of the building material pump, a speed of movement of the printing assembly, and a thickness of the layer of the printed cementitious building material;
• and
• (vii) turning off the building material pump via the controller when a remaining length to print is less than the post turn-off length value and greater than zero.