A machine for removing formwork from underneath a concrete slab includes a wheeled base movable on and supported at a support structure, a raisable and lowerable structure disposed on the wheeled base, and a formwork-removal device attached to the raisable and lowerable structure. The formwork-removal device includes (i) an arm extending from the raisable and lowerable structure and (ii) at least one pneumatic gripper disposed at a distal end of the arm. With the raisable and lowerable structure adjusted to position the pneumatic gripper under the formwork and engaged with the formwork, and when the pneumatic gripper is activated, the pneumatic gripper applies a suction to secure the formwork at the pneumatic gripper. With the formwork secured at the pneumatic gripper, and when the pneumatic gripper is lowered, the pneumatic gripper applies a separating force to the formwork to remove the formwork from the concrete slab.

A shower floor mud forming device includes two rings, at least one section of the big ring, implanted into shower floor mud in desired location and orientation. Device installed without or with the slope guide which ensures correct location and orientation of the rings and section of the big ring. Those elements of the device are functioning as a support for screed tool, which removes/shaves off excess of the floor mud on top of the elements of the device. Correct location and orientation of those elements ensure desired smooth surface and desired slope of the shower floor mud, which ensures correct surface of the finished shower floor. Elements of the device can be reusable or disposable. Slope guide can be used with or without leveling adjusters. Slope guide can be used without or with the pole, which can be used for alternative way to verify level of the top surface of the slope guide.

A concrete float, float assembly, float adapter and interface, and float vibration apparatus and methods are described. A concrete float has improved surfaces, and structures for controlling flow of wet concrete. An interface such as may be included in a quick attach/release configuration may be integrated on a float, and/or may be added onto a float for quick attach/release of a pivot assembly. Adapters may ease attachment or release of an assembly, and may be an interengaging element, such as a sliding dovetail as an interengaging element, or an adapter may be used to place an assembly in tension to secure the assembly. A vibration assembly may be included and configured to have a low center of mass, can have a user display, an accelerometer, and/or other components. A pivot assembly may be included for easier use by an operator, and may include a user display, quick release mechanisms.

A screeding system for use with a screeding machine during screeding of an uncured concrete surface includes a base unit, a support arm extending from the base unit, and an elevation frame disposed at an outer end of the support arm. The elevation frame comprises elevation actuators at opposite ends thereof. A screed head includes a support frame that is pivotally mounted at lower ends of the elevation actuators. The support frame supports an auger, a plow and a vibrating member. A pair of actuators extend and retract to rotate the support frame about an axis parallel to an auger axis. The actuators adjust the support frame and screed head between a screeding orientation and a cleaning orientation. Responsive to a user input, the actuators rotate the support frame to the cleaning orientation, whereby the support frame rotates at least 60 degrees about the axis.

A method for screeding of an uncured concrete surface includes providing a screeding machine and a control. The uncured concrete surface is screeded and the control processes data captured by the sensors while the screeding machine is screeding the uncured concrete surface. While the screeding machine is screeding the uncured concrete surface, and responsive to data processing by the control of data captured by the sensors while the screeding machine is screeding the uncured concrete surface, the control estimates a flatness or levelness or quality of the surface of the concrete surface being screeded. The control may generate an output indicative of the estimated flatness or levelness or quality of the surface, and/or a display may display information associated with the estimated flatness or levelness or quality of the surface.

A handheld concrete finisher is disclosed for finishing concrete from an upright or standing position. The concrete finisher includes a concrete finishing tool, a handle assembly, a multi-axis pivot assembly attached between the handle assembly and the concrete finishing tool, and a control mechanism that allows an operator to selectively prevent the handle assembly from pivoting or rotating about one of the pivot axes. The multi-axis pivot assembly allows the operator to pivot the handle assembly both side to side and backward and forward relative to the concrete finishing tool, and to prevent the handle assembly from rotating while still allowing the handle assembly to pivot side to side. The finishing tool is detachable and can be any one of a number of tools for preparing concrete, based on the job requirements. The handle assembly can be adjusted for the operator's height and/or to extend the operator's reach.

A method for screeding of an uncured concrete surface includes providing a screeding machine and a control. The uncured concrete surface is screeded and the control processes data captured by the sensors while the screeding machine is screeding the uncured concrete surface. While the screeding machine is screeding the uncured concrete surface, and responsive to data processing by the control of data captured by the sensors while the screeding machine is screeding the uncured concrete surface, the control estimates a flatness or levelness or quality of the surface of the concrete surface being screeded. The control may generate an output indicative of the estimated flatness or levelness or quality of the surface, and/or a display may display information associated with the estimated flatness or levelness or quality of the surface.

A finishing tool with an elongate body having a finish side and a grip side. The finish side provides a finish edge configured to form a flat concrete surface when pulled across partially set concrete. The grip side is configured to be gripped by a user. A radius notch on one end of the finish side is configured to provide a rounded edge transition above the flat concrete surface when pulled across the partially set concrete. The finish edge is configured to be sloped running away from the radius notch. An adjustable form gage can be attached to an opposite end of the elongate body from the radius notch. The adjustable form gage defines a foot with a form surface configured to interface with a form. The adjustable form gage is adjustable within a predetermined range to set the finish edge at a predetermined pitch.

A vibration assembly is configured to be engageable with a concrete working tool through engagement of complementary or interengaging interface components. A variety of interface components can be used, and in some examples, the engagement between the interface components is placed under tension.

A concrete screed includes a pair of longitudinal supports having proximal ends that are located opposite distal ends, where the proximal ends are pivotably mounted to an operating machine, such as a skid steer, such that the longitudinal supports extend in a longitudinal direction from the skid steer. A pair of cross members and an end member extend between the longitudinal supports, where the end member is located near the distal ends of the longitudinal supports. A screed blade is pivotably mounted to the end member at a single pivot point, and extends outboard of the longitudinal supports in opposing lateral directions perpendicular to the longitudinal direction. A support platform extends between the cross members and may support a compacting machine. If desired, the screed blade may flexed and/or vibrated during use.