A modular structure is disclosed that shields people from radiation typically encountered in radiotherapy rooms. The structure can be easily assembled without cracks. Moreover, the structure can be assembled and repaired quickly, without interrupting treatments for long periods of time. The structure is made of two general types of modules. A base module is made up of two cuboids fused along facing long edges and offset, one from the other, both vertically and horizontally. A complementary module is made of a single flatter shaped cuboid. It is designed to fill gaps that appear at the top and bottom of the assembled array of base modules. These modules, as configured, allows several structures to be assembled by quick and simple fitting and horizontal and vertical stacking of the modules. The modules can be manufactured from low cost materials such as metal casing filled with metal powder.

A building block system of a plurality of transportable, lightweight, and reusable hollow prefabricated non-masonry interlocking mortarless building blocks that have corresponding mating formations being protuberances and concavities that run vertically up the building blocks being joined together and when aligned in a staggered manner upwardly are held together with threaded reinforcement rods extending vertically between and connected to the top and bottom channels through connectable couplings and capped off with complementary cap attachments.

A wall block, wall block system, method of constructing a wall or other structure and a method of manufacturing a block wherein the wall block has a front, a rear, and two side surfaces, as least one of the surfaces consisting of multiple vertically planar surfaces of differing shapes and sizes and multiple faceted surfaces of differing shapes, sizes and contours.

A hempcrete wall comprising a stud wall, a hemprecte block panel including hemp hurd, hydrated type S lime, and a pumice, and a lumber embedded in the hemprete block panel with holes that allows fixing the hempcrete block panel to the stud wall. The hempcrete block includes a 17.5 lbs of hemp hurd, 10 lbs hydrated type S lime, 17 lbs of powdered pumice, and 44 lbs water.

A hempcrete wall comprising a stud wall, a hemprecte block panel including hemp hurd, hydrated type S lime, and a pumice, and a lumber embedded in the hemprete block panel with holes that allows fixing the hempcrete block panel to the stud wall. The hempcrete block includes a 17.5 lbs of hemp hurd, 10 lbs hydrated type S lime, 17 lbs of powdered pumice, and 44 lbs water.

A wall block, wall block system, method of constructing a wall or other structure and a method of manufacturing a block wherein the wall block has a front, a rear, and two side surfaces, as least one of the surfaces consisting of multiple vertically planar surfaces of differing shapes and sizes and multiple faceted surfaces of differing shapes, sizes and contours.

A building block system of a plurality of transportable, lightweight, and reusable hollow prefabricated non-masonry interlocking mortarless building blocks that have corresponding mating formations being protuberances and concavities that run vertically up the building blocks being joined together and when aligned in a staggered manner upwardly are held together with threaded reinforcement rods extending vertically between and connected to the top and bottom channels through connectable couplings and capped off with complementary cap attachments.

A building system including at least one block and further including at least one mortarless side panel including a finished outside surface and at least one dovetail protrusion on an opposing surface for joining the side panel to the at least one blocks, and a connector on each end of the panel for joining the side panel to other side panels, and at least one top cap including a finished top surface.

A tie system is provided for use with a wall form for a cementitious backup wall and for use with a wall tie to connect between the cementitious backup wall and a veneer. The tie system includes a backup wall connector and a form connector. The form connector is connectable to the form and secures the backup wall connector in position as the wall form is filled. The connector may have heat transfer reducing perforations. The connector may have an outwardly positioned flange to which external wall members may be attached. The connector may have multiple gap-setting features.

A tie system is provided for use with a wall form for a cementitious backup wall and for use with a wall tie to connect between the cementitious backup wall and a veneer. The tie system includes a backup wall connector and a form connector. The form connector is connectable to the form and secures the backup wall connector in position as the wall form is filled. The connector may have heat transfer reducing perforations. The connector may have an outwardly positioned flange to which external wall members may be attached. The connector may have multiple gap-setting features.