A method of construction process of a reinforced compound concrete beam containing demolished concrete lumps comprising following steps. Form an I-shaped steel member with a discontinuous top flange by welding a bottom flange plate, a web and two steel plates. Set up a bottom die of the reinforced compound concrete beam. After hoisting the I-shaped steel member with the discontinuous top flange in position, bind longitudinal bars, waist bars and stirrups, and finally set up a side die. (2) Wet the demolished concrete lumps, pour the fresh concrete with a thickness of 20-30 mm inside a cavity formed by the bottom die and the side die, and then put a layer of the wet demolished concrete lumps in a gap between the two steel plates. The two steel plates are two rectangle steel plates or two trapezoid steel plates. Stir artificially so that the demolished concrete lumps are uniformly distributed inside the cavity formed by the bottom die and the side die. Pour a layer of fresh concrete into the cavity and vibrate the demolished concrete lumps and the fresh concrete in the cavity, so that the demolished concrete lumps are uniformly distributed in the fresh concrete. Repeatedly and alternately pour the fresh concrete and the demolished concrete lumps until the cavity is filled.

A method of construction process of a reinforced compound concrete beam containing demolished concrete lumps comprising following steps. Form an I-shaped steel member with a discontinuous top flange by welding a bottom flange plate, a web and two steel plates. Set up a bottom die of the reinforced compound concrete beam. After hoisting the I-shaped steel member with the discontinuous top flange in position, bind longitudinal bars, waist bars and stirrups, and finally set up a side die. (2) Wet the demolished concrete lumps, pour the fresh concrete with a thickness of 20-30 mm inside a cavity formed by the bottom die and the side die, and then put a layer of the wet demolished concrete lumps in a gap between the two steel plates. The two steel plates are two rectangle steel plates or two trapezoid steel plates. Stir artificially so that the demolished concrete lumps are uniformly distributed inside the cavity formed by the bottom die and the side die. Pour a layer of fresh concrete into the cavity and vibrate the demolished concrete lumps and the fresh concrete in the cavity, so that the demolished concrete lumps are uniformly distributed in the fresh concrete. Repeatedly and alternately pour the fresh concrete and the demolished concrete lumps until the cavity is filled.

A system for raising a mast includes a primary cylinder and an actuator. The primary cylinder has a first end coupled to the mast and a second end coupled to a lifting base. The primary cylinder actuates from a retracted position to an extended position to at least partially raise the mast. The actuator actuates from a retracted position to an extended position to at least partially raise the mast, thereby moving the first end of the primary cylinder or the second end of the primary cylinder toward a pivot point between the mast and the lifting base.

An I-shaped steel with discontinuous top flange reinforced compound concrete beam containing demolished concrete lumps and a construction process thereof. The beam comprises an I-shaped steel having discontinuous top flange, longitudinal bars (7), stirrups (6), waist bars (8), fresh concrete (5), and demolished concrete lumps (4). The I-shaped steel having discontinuous top flange consists of a bottom flange plate (3), a web (2) and a discontinuous top flange plate (1). The discontinuous top flange plate (1) consists of two rectangle steel plates or trapezoid steel plates located at both sides of the I-shaped steel. The two steel plates have a same length that is one third of a length of the I-shaped steel. The trapezoid steel plate has a width of a short side no less than a quarter of a width of the long side. The recycled compound concrete beam saves steel, fully uses the demolished concrete lumps, and is convenient to construct.

A radiation-shielding attenuation structure and method of forming the attenuation structure, wherein the attenuation structure is made by additively manufacturing a concrete material that includes one or more attenuation dopants configured to enhance the radiation shielding of the concrete material. The one or more attenuation dopants may be configured in the concrete material to attenuate one or more types of radiation, such as electromagnetic radiation, gamma radiation, X-ray radiation, or neutron radiation. The attenuation structure formed by the concrete material may be additively manufactured on-site according to a model that has already been pre-certified for safe or secure use, thereby providing a repeatable and reproducible process that can reduce lead times and fabrication costs. The attenuation structure may be easily modified during the additive manufacturing process to have different concrete mixtures with different attenuation characteristics, which increases the tailorability and flexibility in design of the attenuation structure.

The present invention is directed to a building profile including a pair of support legs, a cross member for removably fastening to the pair of support legs and from which a line can extend; a marker stand for engaging with the line, wherein the marker stand includes a point position marker for marking a position on the ground, a support for supporting the point position marker and an upright indicator for indicating whether the point position marker is in an upright position.

The present invention is directed to a building profile including a pair of support legs, a cross member for removably fastening to the pair of support legs and from which a line can extend; a marker stand for engaging with the line, wherein the marker stand includes a point position marker for marking a position on the ground, a support for supporting the point position marker and an upright indicator for indicating whether the point position marker is in an upright position.

A movable topography marking system with a movable marking system for marking in actual size at least some construction information on a construction surface, said marking system comprising at least a spraying device adapted to spray at least one painted band; an engraving laser adapted for burning said at least one painted band for marking on said at least one painted band construction information; and at least one positioning topographic prism.

A movable topography marking system with a movable marking system for marking in actual size at least some construction information on a construction surface, said marking system comprising at least a spraying device adapted to spray at least one painted band; an engraving laser adapted for burning said at least one painted band for marking on said at least one painted band construction information; and at least one positioning topographic prism.

A drywall compound storage system includes a ladder that has a topmost step. A drywall hawk is provided and drywall compound is positioned thereon. A support is provided and the support is selectively positioned on the ladder. The drywall hawk is selectively positioned on the support such that the drywall hawk is retained in a horizontal orientation. In this way the support inhibit the drywall compound from sliding off of the drywall hawk when the drywall hawk is set on the support.