Abstract: A locking assembly attachable to a manhole cover includes an arm disposable in a lowered position with the arm disposed in a first orientation engageable with a manhole frame supporting the manhole cover to inhibit removal of the manhole cover from a manhole frame, and disposable in a raised position and in a second orientation operable to allow removal of the manhole cover from the manhole frame. In an embodiment, the locking assembly may include the arm attached to a movable member having a spiral, helix, or curved groove and in which the movable arm is receivable in a bushing and a pin receivable in the groove.

Abstract: An apparatus for carrying out bi-directional load testing of close ended driven piles and injection piles utilizing a hydraulic jack, comprising an enclosure for housing the hydraulic jack (13). The enclosure (1) includes a first hollow body (10) a second hollow body (15). The first hollow body (10) had a covered upper end (10a) and an open lower end (10b), with the upper end being capped by an attached top plate (11) having an external surface (11a) which the lower end (81b) of a first pile (81) may be axially attached to, and an internal surface (11b). The open lower end (10b) has a cut-out (12) originating on the edge of the open end (10b) of the first hollow body for receiving a hydraulic connection (14) for the jack (13). The second hollow body (15) is capable of housing the hydraulic jack (13), has an open upper end (15a) and a lower end (15b).

Abstract: Provided is a work vehicle which is capable of appropriately setting the height of a work tool as a control threshold value for a ride control device or an automatic transmission control device, and which is excellent in operability, travel stability, and work efficiency. A value detected by an angle sensor (39) when a signal import switch (46) is operated by an operator is stored in a height position storage unit (35b) of a main controller (35) as height position information about a bucket (13) for excavation work. In the height position storage unit (35b), the height position of the bucket (13) for hauling work and the height position of the bucket (13) for loading work are stored in advance as offset values from the height position information about the bucket (13) for excavation work. In this way, the ride control device or the automatic transmission control device can be appropriately controlled regardless of the preference or habit of the operator.

Abstract: A working machine including a movable implement, a hydraulic actuator for displacing the implement, and a hydraulic control system for enabling an operator to control movement of the implement. The control system allows the implement to be returned to a desired position or state, such as a return to dig position or a return to float state, in a single automated operation that is initiated by the operator actuating a switch at the same time as moving a joystick in a desired direction. A pilot-operated valve is used to supply hydraulic fluid under pressure to the actuator acting on the implement and the operation of the joystick is detected by means of a pressure sensor connected to a control line of the pilot-operated valve.

Abstract: A system for controlling movement of a work implement of a machine between a dump location and a plurality of dig locations includes a rotatable implement system, and an implement system pose sensor. A controller is configured to store first dig signals from the implement system pose sensor indicative of a first dig location, store second dig signals from the implement system pose sensor indicative of a second dig location spaced from the first dig location and store a dump location. The controller is further configured to generate command signals to move the work implement from the first dig location to the dump location, generate command signals to dump a load of material carried by the work implement at the dump location, and generate command signals to move the work implement from the dump location to the second dig location.

Abstract: A suctioning device for suctioning impurities from the bottom of large artificial water bodies is provided. The suctioning device includes a flexible sheet configured to provide a structural frame; a plurality of first brushes depending from the sheet; a plurality of middle brushes; a plurality of lateral brushes; a plurality of suction points; a plurality of wheels configured to provide secondary support when the brushes are worn out; a plurality of collectors configured to gather the suctioned water into external suction lines; a plurality of internal suction lines configured to conduit the suctioned bottom water flow from the plurality of suction points to the plurality of collecting means; and a coupling device connecting the internal suction lines and the collectors, wherein a rate of the bottom water flow entering the suctioning device is the same or higher than a rate of water flow suctioned by an external pumping system.

Abstract: A trenching device rotating a trenching chain through a substrate to form a trench. The trenching device including a power unit, a drive unit including a belt drive system, and a trenching unit including a trenching chain and configured to rotate the trenching chain about a trenching bar.

Abstract: Apparatus for removing sludge from an underwater deposit comprises a blade having a cutting edge that points forwards and a blade surface to the rear of the cutting edge that faces the interior of a housing. Nozzles are positioned and oriented to direct jets of water onto the blade surface to fluidize sludge that has been cut by the blade. The jets have a component of motion in the rearward direction relative to the blade surface, whereby the fluidized sludge is effectively contained within the housing and high collection rates can be achieved. The apparatus can be adapted for horizontal use over the surface of a sludge deposit or for movement in any direction through a bulk sludge deposit.

Abstract: An engine compartment accommodates an engine. A cooling device is configured to cool the engine. A cooling compartment accommodates the cooling device. A division wall is disposed between the engine compartment and the cooling compartment. A ventilation portion includes a hole for permitting air to pass therethrough and is provided on a top surface of the engine compartment. A water receiving member is disposed under the ventilation portion within the engine compartment. A water catchment member is disposed in the cooling compartment and catches water received by the water receiving member. A drainage pathway is connected to the water catchment member and leads the water to a predetermined drainage position.

Abstract: Power equipment, a driving device of trench cutter, and a trench cutter are disclosed. The power equipment comprises a motor, a motor installation seat with an inner cavity having a first installation hole and a second installation hole in respective ends, and a transmission shaft. The motor, at the upper part of the seat, is sealingly connected with the seat. A motor output shaft extends into the inner cavity through the first installation hole. One end of the transmission shaft extends into the inner cavity through the second installation hole and is drivingly connected with the motor output shaft. The middle part of the transmission shaft and the second installation hole are sealingly connected; the other end of the transmission shaft extends from the second installation hole. A motor oil drainage cavity can be sealed by sealing the seat without changing the structure of the motor without a lip seal.

Abstract: To provide a work machine which, in a configuration provided with a closed-circuit pump and an open-circuit pump, is capable of stabilizing respective pump operations of the closed-circuit pump and the open-circuit pump and of improving the mountability of the closed-circuit pump and the open-circuit pump. The present invention is provided with a closed circuit in which a closed-circuit pump and a boom cylinder are connected annularly, and an open circuit which has an open-circuit pump for making hydraulic fluid flow in from a reservoir and flow out and a connection passage capable of introducing hydraulic fluid into the closed circuit, wherein the closed-circuit pump is installed above the open-circuit pump.

Abstract: Provided is a hydraulic fluid energy recovery system for a work machine equipped with a hydraulic pump, a hydraulic actuator for driving the work machine, an operating device for operating the hydraulic actuator, and a regenerating device for recovering a return fluid flowing back from the hydraulic actuator.

Abstract: A mode selecting unit is configured to generate an operation signal indicating one control mode selected from a plurality of control modes including a predetermined first mode and a second mode in which a traction force is controlled to be smaller than a traction force in the first mode. A controller is configured to obtain the operation signal from the mode selecting unit and control a drivetrain in accordance with the selected control mode. The controller is configured to start controlling the drivetrain in the second mode in starting of a vehicle.

Abstract: A human detection system may detect the presence of a human around a shovel by using an image captured by an imaging device attached to the shovel. Also, the human detection system may have an extracting part that extracts a part of the captured image as an identification process target image, and an identifying part that identifies whether an image included in the identification process target image is an image of a human. A region of the identification process target image is preliminarily associated with one of head image positions in the captured image. The extracting part finds out a helmet image in the captured image, and extracts the identification process target image by associating a representative position of the helmet image with one of the head image positions.

Abstract: A system for evaluating a position of a target zone relative to a path of a material engaging work implement includes a rotatable implement system, an implement system pose sensor, and a target pose sensor. A controller determines a current pose of a portion of the implement system, determines a first pose of the target zone, determines a plurality of potential paths for moving the work implement to the first pose, and generates an alert command if a kinematic model and desired operating characteristics do not permit movement of the work implement to the first pose.

Abstract: A method for determining a useful life of a consumable component of a machine is provided. The method includes monitoring for a signal indicative of an identifier code associated with the consumable component and further determining the identifier code from the signal. The method further includes matching the identifier code with a set of pre-stored identifier codes. The method includes generating a first value, indicative of the useful life of the consumable component, if the identifier code matches with one of the pre-stored identifier codes from the set of pre-stored identifier codes, and generating a second value, indicative of the useful life of the consumable component, if the identifier code does not match with any of the pre-stored identifier codes from the set of pre-stored identifier codes, where the second value is lesser than the first value.

Abstract: A system enables notification of a time for drainage of water from a water separator without adding a new element into the water separator. A hydraulic excavator has a feed line feeding fuel from a fuel tank to an engine, a water separator at a part of the feed line to separate fuel flowing through the feed line and water contained in the flowing fuel from each other, a water level detector detecting a level of separated water, and a notification device to provide notification of when the water level detected reaches a predetermined height. An operation determination device determines whether or not the hydraulic excavator is in operation, and a notification control device disables a notifying function of the notification device when it is determined that the hydraulic excavator is in operation and enables the notifying function when the hydraulic excavator is determined to be out of operation.

Abstract: A shroud retention system for a work tool is disclosed. The shroud retention system may have an adapter attached to the work tool. The shroud retention system may further have a spring assembly attached to the adapter. The shroud retention system may also have a shroud, which may have a channel configured to slidably receive the adapter and the spring assembly. The channel may have a retainer slot. The shroud retention system may have a retainer plate disposed in the retainer slot. The retainer plate may be movable into a locked position by the spring assembly.

Abstract: A shroud for a work tool is disclosed. The shroud may have a tip portion. The tip portion may have a tip extending from a shroud proximal end to a tip end disposed between the shroud proximal end and a shroud distal end. The tip portion may further have an upper leg extending from the tip end to an upper leg distal end. The tip portion may also have a lower leg extending from the tip end to a lower leg distal end. The lower leg may be spaced apart from the upper leg to form an opening between the upper leg and the lower leg. The shroud may have an attachment portion attached to the upper leg. The attachment portion may extend from adjacent the tip end to the shroud distal end.

Abstract: Aspects of the present disclosure relate to an apparatus including a drum rotatable about an axis of rotation and a support mount secured to the drum. The apparatus includes a support mount defining first and second fastener openings and first and second anchor openings. A replaceable holding block mounts to the support mount and the replaceable holding block has a front face and a rear face. The replaceable holding block defines a first fastener opening, a second fastener opening, and a tooth opening that extend through the replaceable holding block from the front face to the rear face. The first and second fastener openings of the replaceable holding block align with the first and second fastener openings of the support mount when the replaceable housing block is mounted to the block mounting surface. A tooth is secured to the replaceable holding block at the tooth opening.

Abstract: A backflow preventer that includes a housing having an inlet and an outlet adapted to be mounted in a liquid flow configuration in a liquid supply circuit. An upstream check disc assembly is positioned in the housing downstream of the inlet, and includes an upstream check plate supporting a downstream diaphragm. An upstream check disc is positioned downstream of the diaphragm and integrally formed with an upstream stem mounted in an aperture in a central hub formed in the check plate for movement between an normally open, flow position and a closed position preventing backflow of liquid through the inlet. A downstream check disc assembly is positioned in the housing downstream from the upstream check disc assembly. A vent discharges liquid to atmosphere upstream of the downstream check disc assembly.

Abstract: A water storage tank built for a reverse osmosis water purifying system deploys multi water flow passages of purified water and drainage water, allocated a soft bladder unit receiving purified water encompassed by the waste water in the tank. When the water tank unit is fully filled with water, the water pressure activates the auto-shut-off valve or solenoid valve to stop operation of the reverse osmosis water purifying system. When the dispensing faucet is turned on, the drainage water swells to squeeze the soft bladder unit to deliver the purified water out from the soft bladder unit to the dispensing faucet, and the drainage water flushes the reverse osmosis membrane as well. The technique enables the tank to take the least water pressure resistance to hold water and drain water which results in energy saving and water saving.

Abstract: A plumbing fitting that includes a housing having an outlet, water being conductible through the outlet from a hose connection to a jet former of the outlet with the aid of a hose. The hose being insertable into an outlet nipple of the hose connection, and the outlet nipple having a groove extending from an opening in which a seal is disposed for the purpose of sealing the housing against the outlet nipple. The groove being at least partially closed by a closing element disposed on an end face of the outlet nipple.

Abstract: A faucet includes a spout; a sprayhead that is moveable relative to the spout between a docked position and an undocked position; a magnet associated with the spout and having a bore; and a magnetically responsive collar associated with the sprayhead and moveable relative to the magnet in an axial direction as the sprayhead moves between the docked and undocked positions. In the docked position, magnetic forces between the magnet and the collar attract a center of the collar to align with a center of the magnet in the axial direction with the collar in the bore of the magnet.

Abstract: A tub faucet in one embodiment includes a hot water inlet for flowing hot water; a cold water inlet for flowing cold water; an outlet communicating with both the hot and cold water inlets; a tee including a first port communicating with the outlet, a second port, and a third port; and a handle for adjusting the volume of hot water mixed with the volume of cold water, flowing the mixed water to the second port or the third port, and turning off the outlet.

Abstract: A tub spout assembly includes a tub spout. The tub spout includes a spout inlet and a spout outlet. A diverter assembly is carried by the tub spout. The diverter assembly includes a diverter inlet and a diverter outlet. A handle is rotatable from a first position to a second position and vice versa relative to the tub spout. A sealing element is coupled to the handle so as to rotate with the handle. In the first position the sealing element is disposed apart from the diverter outlet to permit water to flow through the tub spout assembly and exit the tub spout assembly via the spout outlet. In the second position the sealing element obscures the diverter outlet to inhibit water from flowing through the spout outlet of the tub spout assembly. A torsion spring biases the handle and the sealing element toward the first position.

Abstract: A powered hygiene shower spray system is provided. The system has a slide bar housing adapted for mounting to a shower chamber substrate. A moving head or spray nozzle is provided that is movable along said slide bar housing. A hose is in fluid communication between a water supply and the spray nozzle when the spray nozzle is moveably present. A control panel accepts user input as to a parameter of the spray nozzle. A drive mechanism is provided for moving the spray nozzle without user manual manipulation of the spray nozzle.

Abstract: An improved drain stopper valve assembly is disclosed that replaces the conventional drain stopper and includes an integral strainer that completely surrounds the underside of the stopper valve. It has perforated, tubular upper and lower sections that connect together via a bayonet coupling that enables easy disassembly for cleaning or removal of debris or a lost object. The lower section of the strainer body is also tapered to enable freer flow of liquid through the stopper valve assembly even if the lower section is filled with debris that has been strained. The replacement stopper valve assembly is designed to fit all standard basin drain plumbing, and to be easily removable from the drain.

Abstract: A straining device includes a top seal element, a central cylinder element and a bottom seal element and is positioned in a drain pipe of a shower, sink or bathtub to prevent hair from clogging the drain pipe while providing an aesthetically appealing appearance and allowing for easy cleaning.

Abstract: A debris trap for a floor drain includes a rim defining an outer diameter, an inner diameter, and a radial center. A plurality of prongs are integrally formed with the rim and spaced along at least part of the inner diameter. At least some of the prongs are arranged to extend over an inlet of a drain body and have a proximal portion connected to the rim and extending radially inward from the rim, and a free distal portion that is only upwardly curved from the proximal portion toward the radial center of the rim.

Abstract: A backflow prevention device including a tank having a holding chamber and first and second inlets connected with the holding chamber; a control valve having an intake chamber and first and second discharge chambers connected with the first and second inlets, respectively, the intake chamber connected with the first discharge chamber through a valve inlet; a valve sealing element for opening and closing the valve inlet, the second discharge chamber connected with the intake chamber through a hole of the valve sealing element; a float in the holding chamber; a slide bar in the holding chamber, contacting the float, and moveable toward the second inlet under the action of the float; and a slide bar sealing element for controlling opening and closing of the second inlet. When the second inlet is closed, the valve inlet is closed; and when the second inlet is open, the valve inlet is opened.

Abstract: A toilet odor elimination system is provided. The toilet odor elimination system is adapted to direct airflow from a toilet space circumscribed by toilet bowl for discharge the directed airflow into an external space, preventing the toilet odor from escaping the toilet space by directly eliminating the toilet odor there from.

Abstract: A nozzle assembly including water and gas supply units, a jet pipe having a nozzle for spraying water and/or gas, and a supply pipeline. The supply pipeline includes a first end fluidly connected with the nozzle and a second end fluidly connected with the water and gas supply units. The water supply unit has an open state, in which water is supplied to the supply pipeline, and a closed state. The gas supply unit has an open state, in which a gas is supplied to the supply pipeline, and a closed state. After the water supply unit is switched from the open state to the closed state, the gas supply unit is automatically switched from the closed state to the open state and is maintained in the open state for a preset time, after which the gas supply unit is switched to the closed state.

Abstract: Systems, methods, and devices relating to urinal, in some examples having a movable portion able to pivot from a generally closed to a generally open position. The urinal may have a drain line engaged with a proximal end of the funnel for conveying urine and rinse water into a sewer line or a toilet bowl and a rinse line coupled with a water supply for rinsing urine therein. The urinal may be movable with the assistance of one or more sensors that may automatically signal other electrical or mechanical components to move one or more portions of the urinal, and may be include elements that seal portions of the urinal when not in use or during cleaning to reduce gas or liquid escaping from the urinal system.

Abstract: A storm drain system is provided. The storm drain system incorporates a vertical grate and embodies a method of adapting the vertical grate for allowing sufficient water flow through a vertical opening portion of a storm drain while filtering out debris that would otherwise flow through the vertical opening portion, polluting waterways the storm drain fed into. The vertical grate providing a plurality of intersecting members across the vertical portion for filtering the debris, and helping prevent backed up drains which could render the storm drain ineffective during heavy rains.

Abstract: A structure with integrated insulation. The structure with integrated insulation includes a steel frame. The steel frame includes a first support beam and a second support beam. The structure with integrated insulation also includes an assembly with integrated insulation. The assembly with integrated insulation includes a first building panel with integrated insulation, the first building panel with integrated insulation being attached to the first support beam on the first surface of the first building panel with integrated insulation. The assembly with integrated insulation also includes a second building panel with integrated insulation. The second building panel with integrated insulation 4 includes an indentation in the first surface configured to receive at least a portion of the first building panel with integrated insulation. The second building panel with integrated insulation being attached to the second support beam on the second surface of the second building panel with integrated insulation.

Abstract: A 3-dimensional modular construction system using only two, generally U-shaped prefabricated room size modules is used to form scalable, modular construction for schools, apartments, hotels, houses and the like. The modules may be formed of reinforced concrete. By using the above described modules, double walls within the buildings are eliminated thus, simplifying construction and reducing material and costs, while becoming a container for the pre-finishing of the spaces.

Abstract: Decorative structures for use at ceremonies or other events, the decorative structures having one or more removable and transportable display retainers for retaining a display of flowers and/or other items. In some embodiments, the removable display retainer may be particularly adapted for a dissimilar decorative use at a different location where a subsequent portion of a given ceremony or other event will take place.

Abstract: An anchoring system is disclosed, having an anchor where one end is plurality of prongs configured to expand and retain a substrate when engaged by a threaded rod pin and the other end is a partially threaded opening configured to engage the threaded rod pin. The threaded rod pin has a section of exterior threading that will engage with both the coupler and the anchor. A drill depth measuring guide having a hollow threaded holder to accept a dill bit. The holder has a setscrew to secure it to the drill bit and an exterior threaded cylinder to matingly engage a locking nut and a collar that can be threaded onto the holder at various locations to allow for different drill depths.

Abstract: A structural webbing to be custom cut and fit to individual job sites, allowing for the reduction or elimination of traditional beams used in structural building. Webbing uses angular forces to bear loads, resulting in reduction of thick beams. Elimination of beams allows for significant reduction in resource consumption and increase in thermal efficiency of structure. Webbing allows elimination of thermal shorts and increased space for insulating materials. Webbing consists of alternating nodes and members, wherein members are disposed at positive and negative angles to the nodes, creating a zig-zag pattern. May include upper or lower cords. Can be used in straight line for walls, window headers, doors, etc., or in curves or other more elaborate shapes for curved windows, etc. Suitable for load bearing walls, upper and lower floors. Nodes can be coupled with standard structural members such as king studs, head pieces, and top and bottom plates.

Abstract: A panel fastener for removably flush mounting a wall panel to a wood furring. The panel fastener includes a mounting body adapted for being inserted into a complementary opening in the wood furring. A hanger slot is disposed in the mounting body for receiving a hanger member carrying the wall panel. A slot flange is disposed within a portion of the hanger slot and defining a narrowed hanger channel receiving and securing the hanger member. A crush ridge is disposed on a rear side of the slot flange for engaging the hanger member. A slot cap disposed in a rear side of the hanger slot and including a locking arm engaging the hanger member when inserted into the narrowed hanger channel of the slot flange for resisting removal of the hanger member from the narrowed hanger channel.

Abstract: A system and method for detecting, marking and/or sealing building envelope leaks in buildings or any enclosed structure. Fogs of aerosolized sealant particles that have a surface tackiness that diminishes over time are introduced into the interior of prepared rooms. The surface properties of the aerosol particles can be controlled with the selection of sealant composition, including the presence and concentration of solvents, the range of produced particle sizes, and the relative humidity and temperature within the enclosure. A pressure differential is created and the micron scale particles adhere to the leak edges and to other particles as they are brought to the leaks and then leave the gas streamlines. Control of particle size, drying rate and particle residence time in the building interior allows control over the treatment area so that leaks are sealed without leaving a tacky residue.

Abstract: This disclosure relates to an insulative system and materials therefor comprising a polymeric composition disposed at the junctions of the framing and exterior sheathing. In particular, an insulative system and materials therefor comprising a polymeric composition in the form of a sealing structure in contact with both the framing and exterior sheathing of a building are described.

Abstract: A laminated board is secured to the inner wall of a cavity wall construction to establish a defined spacing between the inner and outer walls and prevent excess mortar from bridging to the inner wall. The laminated board has a series of spaced sockets into which fasteners may project into the face of the inner wall or framing thereof to secure the outer wall. The board is installed prior to the construction of the outer wall and establishes a minimum spacing or gap between the walls based upon the thickness of the board. The outer wall is constructed immediately adjacent to the outer face of the laminated board. The board is impervious and eliminates bridging by the mortar, eliminates transfer of bulk water from the exterior finish to the inner wall and provides an air conduit to exhaust even the minimal amounts of vapor that will occur in the cavity.

Abstract: A tubular passage for poured concrete decks has an intumescent tube held in a two-part, clamshell base by a bottom clip. A first tube engages the base's top to clamp a funnel shaped, diaphragm seal to the base. The first tube has spaced, radially extending, parallel ridges at predetermined distances from the base. Longitudinal channels separate the ridges. An extension tube has inward extending lugs passing along the channels to engage various ridges when rotated to fix the passage length. The extension engages the base bottom for corrugated deck supports. A cap with repositionable, locating filaments closes either tube.

Abstract: In a partition system partitions there are two or more doors, positioned in a common plane. Adjacent doors have angled sides that meet when the doors are closed. Each door is attached to a post or partition by a pair of hinges and is mounted so that there is a space adjacent each side surface of the doors when the front surfaces of those doors are parallel to the common plane. When the front surfaces of those doors are parallel to the common plane each door is mounted so that and any sight line through each space will intersect at least one of the spaced apart posts and the spaced apart partitions when the front surfaces of the doors are parallel to the common plane. The hinges may provide an axis of rotation that is inward from the edge of the door. The partitions are preferably mounted on frame members that have an L-shaped or inverted T-shaped cross-section. The partitions have a slot along one side which receives the upright portion of the frame members.

Abstract: A purlin mounting system for use in a flat roof structure includes a purlin with a flat mounting wall and an upright wall extending perpendicularly from the mounting wall. First and second mounting shelves are attached to the upright wall and extend outwardly in opposite directions. Each mounting wall is positioned to receive an edge of a roof section thereon. The flat mounting wall and the upright wall define a vertical mounting channel extending from a lower surface of the flat mounting wall a distance less than the distance of the first and second mounting shelves from the mounting wall. A purlin positioning and mounting device is designed to be attached to a roof beam and includes a vertically extending support wall designed to extend upwardly from a supporting roof beam when attached to the supporting roof beam and to nest within the mounting channel.

Abstract: A faceted architectural fixture is provided that include one or more folded elongated strips, each providing a series of alternating faceted surfaces.

Abstract: A structural webbing to be custom cut and fit to individual job sites, allowing for the reduction or elimination of traditional beams used in structural building. Webbing uses angular forces to bear loads, resulting in distributed loads not requiring thick beams. Elimination of beams allows for significant reduction in resource consumption and increase in thermal efficiency of structure. Webbing allows elimination of thermal shorts and increased space for insulating materials. Webbing consists of alternating nodes and members, wherein members are disposed at positive and negative angles to the nodes, creating a zig-zag pattern. Can be used in straight line for walls, window headers, doors, etc., or in curves or other more elaborate shapes for curved windows, etc. Suitable for load bearing walls, upper and lower floors. Nodes can be coupled with standard structural members such as king studs, head pieces, and top and bottom plates.

Abstract: A pre-formed header assembly creates a rough wall opening for a metal door/frame, permitting completion of electrical, ducting, drywall, etc. prior to receiving/installing the door frame. The header is secured to first and second king studs at respective locations positioned beyond a desired door frame location. The header includes four different channels, one of which is utilized at two locations. The first channel has a first length to span between the king studs. The second channel has a second length, and the third channel a third length, which correspond to minimum dimensional requirements for completing the wall. The base of the second and third channels are each fixedly secured to the base of the first channel. The base of the fourth and fifth channels are fixedly secured to the first and second ends of the base of the first channel, respectively, substantially perpendicular thereto, for attachment to the king studs.