A raised floor panel removal tool includes a J-shaped body having a first vertical bar, a second vertical bar and a horizontal bar that is connected to the vertical bars along the respective bottom ends. A handle is positioned along the top of the first vertical bar and is positioned perpendicular to the horizontal bar. The tool components are constructed from steel tubing and an electrically insulative material is provided along the handle. A pair of wheels are attached to the bottom end of the first vertical bar by a bracket, and the second vertical bar can be constructed to include an adjustable height.

An uncoupling mat includes a flexible layer made of a film-like plastic with structuring that defines indentations provided with undercuts on a first, top side and a series of annular cavities formed on an opposite second, bottom side. The annular cavities on the bottom side each define a recess on the first side. The indentations have a cross-section adapted to receive a heating cable therein such that the cable can be held in position by the indentations. A plurality of weakening zones each extends between two rows of annular cavities in a straight line to allow the plastic layer to move substantially transversely to the direction of extension of the weakening zones.

A method for reinforcing an existing stone masonry wall, wherein, the UHPC (ultra high performance concrete) material for reinforcing an existing stone masonry wall as a reinforcing material, comprising following steps: step (1): carrying out a pretreatment to the existing stone masonry wall to be reinforced; step (2): tensioning and thereby reinforcing the existing stone masonry wall pretreated in the step (1); step (3): injecting a prepared UHPC material into the mortar joint by a manual squeezing; step (4): spraying prepared UHPC material onto the existing stone masonry wall that has been treated in the step (3) by a spraying process; step (5): maintaining; the UHPC material includes: 550-600 kg/m.sup.3 of silicate cement, 180-200 kg/m.sup.3 of white silica fume, 510-530 kg/m.sup.3 of limestone powder, 715-735 kg/m.sup.3 of quartz sand, 60-75 kg/m.sup.3 of iron ore tailings particles, 50-60 kg/m.sup.3 of pumice particles, 15-30 kg/m.sup.3 of polycarboxylic acid water reducing agent, 230-255 kg/m.sup.3 of water and 25-35 kg/m.sup.3 of POM fiber.

The present disclosure provides a spraying system and a using method thereof. The spraying system includes a lifting apparatus and a spraying apparatus. The spraying apparatus connects to the lifting apparatus and includes a stage, a multi-axis transfer mechanism, a spraying component, a driving component, a surface profile detector, and a controlling component. The multi-axis transfer mechanism is disposed on the stage. The spraying component is disposed on the multi-axis transfer mechanism and the stage. The driving component is disposed on the stage and connects to the lifting apparatus. The surface profile detector is disposed on the stage and scans an area to be sprayed to obtain scanning data. The controlling component is disposed on the stage and controls the lifting apparatus, the spraying component, and the driving component according to the scanning data and pre-stored initial data.

A cleaning method includes controlling an unmanned aerial vehicle (UAV) to fly to a region of a wall body according to a path to be cleaned, determining a distance between the UAV and a wall surface of the region of the wall body based on a cleaning mode, and controlling the UAV to clean the wall surface via the cleaning mode and at the determined distance away from the wall surface.

An aerial operations system for performing various tasks such as painting is provided. The modular aerial operations system includes an aerial vehicle capable of vertically taking off and landing, hovering and precisely maneuvering near walls and other structures. The aerial vehicle may be a rotorcraft such as a multicopter. In an aspect, as aerial vehicle paints one or more designated surfaces using detachable arms and equipment. The system may paint the designated surface in one of several available techniques using paint provided in a container such as an attached reservoir, a base station, a paint can, or the like. The aerial operations system provided may also be configured to perform a variety of other tasks.

The present disclosure relates to devices and methods for determining the density of insulation. For example, one aspect of the disclosure is a device that includes a sound generator and one or more sound sensors configured to detect sound that is generated by the sound generator and transmitted through the insulation to the one or more sound sensors. The device also includes a control system configured to cause the sound generator to generate the sound and use the sound detected by the one or more sound sensors to generate output that represents the density of the insulation. Another aspect of the disclosure is a method for using the device to determine the density of insulation.

The present disclosure relates to devices and methods for determining the density of insulation. For example, one aspect of the disclosure is a device that includes a sound generator and one or more sound sensors configured to detect sound that is generated by the sound generator and transmitted through the insulation to the one or more sound sensors. The device also includes a control system configured to cause the sound generator to generate the sound and use the sound detected by the one or more sound sensors to generate output that represents the density of the insulation. Another aspect of the disclosure is a method for using the device to determine the density of insulation.

A vertical joint system for substrates is formed with joints and which engaged by relative motion in a direction perpendicular to major surfaces and of the substrate. The joints are configured to enable relative rotation of up to 3 degrees while maintaining engagement of the joints. The joints and are further configured to form two locking planes one on each of the inner and outer most sides of the joint. Engagement about the locking planes is provided by transverse outward extending surfaces. At least one surface in each pair of engaging surfaces is smoothly curved. The joints and can be further arranged to provide a third locking plane parallel to and between the locking planes. The joints are disengaged by combination of a downward rotation of one joint relative the other then application of a downward force.

A carpet tack strip removal tool. The carpet tack strip removal tool provides a device for lifting carpet tack strips from a floor surface while remaining allowing a user to remain in a standing position. The carpet tack strip removal tool includes an elongated shaft having a head at an end. The head includes a pry bar arm for placing between the flooring surface and the tack strip to be lifted, and a fulcrum lever for providing mechanical advantage when a lifting force is applied to a lifting arm. When moved from a setup position to the lifting position, the pry bar arm lifts and removed the carpet tack strip from the floor surface.