Abstract: The present invention relates generally to a cavity filling system for e.g. noise reduction, sealing and/or stiffening. The cavity is part of an automotive vehicle structure. The present invention further relates to an automotive vehicle structure with a multitude of cavities and a filling system.

Abstract: Embodiments of the present invention provide a connection system with a projection on a first connector and a co-operating cavity on a second connector to provide push-through connection of the connectors in first and second configurations in which the projection extends to first and second depths respectively within the cavity, wherein one or more of the projection or cavity is movable in two dimensions perpendicular to a longitudinal axis of the projection when received in the cavity, wherein the first and second connectors have cooperating locking surfaces arranged to engage each other when the projection is received at the second depth to prevent said movement in two dimensions and wherein the cooperating locking surfaces do not engage each other so as to prevent said movement in two dimensions when the projection is received at the first depth in the receiving cavity.

Abstract: Methods for fabricating fiber-composite truss structures comprise a) individually molding multiple unit cells of a given size, and subsequently fusing them together in a repeating pattern, b) cross members are consolidated with longerons while maintaining continuity of fiber in the longerons, and c) compression-molded truss components are unioned to continuous fiber beams by means of mechanically interlocking joints.

Abstract: A slatwall assembly and related slatwall for covering an existing wall. The slatwall assembly includes a surface profile and a reinforcing profile, at least one of the two being attachable to the existing wall. The surface profile includes a front vertical panel that is positionable with respect to the existing wall to define a gap therebetween and provide coverage thereto. The reinforcing profile is operatively coupled to the surface profile. The material of the reinforcing profile can be stronger than the material of the surface profile for reinforcement thereof when coupled together. The reinforcing profile can be operatively coupled to the surface profile so as to be held together for attachment onto the existing wall. The surface profile can be configured to cover at least a portion of the reinforcing profile, so as not to expose the reinforcing profile when an entire slatwall is assembled from the plurality of slatwall assemblies.

Abstract: A fuselage structure of an aircraft includes a fuselage skin, and a plurality of frame elements spaced apart from one another in a direction parallel to the aircraft longitudinal axis for supporting the fuselage skin. The fuselage skin includes a plurality of interconnected fiber-reinforced composite skin panels that extend between each pair of frame elements and are connected thereto. The composite skin panels further comprise a stiffener integrally formed in each composite skin panel. A method for manufacturing the fuselage skin. The composite skin panels may be interconnected and/or connected to a frame element through an induction welded connection.

Abstract: A plenum slot diffuser includes a plenum box having five walls formed by joining edges of a C-shaped bracket having first, second, and third walls of the five walls with additional edges of an L-shaped bracket having fourth and fifth walls of the fives walls. An air input opening of the plenum box is disposed in one of the five walls and is configured to be coupled to a duct, and an open end of the plenum box defines an air output opening. The plenum slot diffuser includes at least one blade and a blade holding rod comprising a neck, wherein the neck faces away from the air output opening of the plenum box.

Abstract: A modular stiff wall panel assembly, for a building structure, includes a modular wall panel including a body having a single, continuous, and unitary layer extended along an entire surface area of the wall panel, a plurality of studs engaged with the single, continuous, and unitary layer, a plurality of external reinforcement members engaged with the single, continuous, and unitary layer, and a plurality of internal reinforcement members engaged with the studs and oppositely spaced from the external reinforcement members. Each of the external reinforcement members and the internal reinforcement members have a hat-shaped (profile) cross-section.

Abstract: A composite molded cargo body panel including a core, an interior skin secured to a first side of the core having a thickness, and exterior skin secured to a second side of the core, and a plurality of recesses. The plurality of recesses are dispersed along a first direction at intervals in the interior skin, with the core thickness at each of the plurality of recesses being reduced compared to a maximum core thickness, and each of the plurality of recesses defines a support surface. A pocket is formed in each of the plurality of recesses, with the core thickness at the pocket being less than the core thickness at each of the plurality of recesses. A plurality of logistics inserts are attached to the respective support surfaces of the plurality of recesses so that, at each of the plurality of recesses, the logistics insert extends across the pocket.

Abstract: A composite core assembly includes a composite core structure having internal material interfaces and an attachment rail coupled to the composite core structure. The attachment rail includes a first planar surface and a second planar surface adjoined with the first planar surface. The first planar surface is arranged parallel to an internal material interface plane of the composite core structure, and the first planar portion is at least partially integrated into the composite core structure in an internal material interface plane. At least a portion of the first planar surface extends beyond a perimeter surface of the composite core structure, and the second planar surface is configured to attach to the surrounding support member. The core material does not have net edge facets or flat edges positioned next to surrounding structure, and/or may not have a structure arranged parallel to the adjacent support structure to attach to the support structure.

Abstract: A first cylinder is configured to receive a gas turbine. A second cylinder surrounds an outer circumference of the first cylinder. Retainers extend from the second cylinder towards the first cylinder. Each of the retainers includes a central stalk that extends from the second cylinder towards the first cylinder and a branches extending radially from the central stalk.

Abstract: A drip edge with gutter guard support device is formed from a longitudinal sheet of waterproof material. An angled upper first member integrally joined to a vertical lower second member form an angled structure. The first member is configured for placement on a roof edge and under a roof shingle and the second member is a configured for placement to a fascia, the lower portion of the second member being configured for placement over a gutter's back end. Vertically stacked ledges extend outwardly from the second member into an opening of the gutter. Separations between adjacent ledges form varying height receiving channels for placement of a roof-side end of a gutter guard. The device is a single piece drip edge and gutter guard fascia-side attachment device.

Abstract: A structure-lining apparatus comprising a plurality of transversely and longitudinally extending panels connectable to a structure and connectable edge-to-edge via complementary connector components on their longitudinally extending edges. Each panel comprises transversely extending edges generally orthogonal to their longitudinally extending edges. Each panel comprises first and second complementary connector components on first and second longitudinally extending edges thereof.

Abstract: A method of roofing a bare roof deck includes applying asphalt shingles and metal flashings to a wood deck of a roof. The flashings applied are edge drip for edges and gable ends, metal valleys, and step flashing for wall to roof junctions. Asphalt capping of ridges or hips are applied. Metal panels overtop of existing asphalt roof are applied thereby creating a metal overlay configured such that substantially all of the asphalt shingles are covered with a metal panel for preventing further degradation of asphalt components by shielding from sunlight, UV rays, excessive moisture, snow, wind, ice, and fire. No further flashings are installed thereby the metal panel overlay is configured to create a semi-watertight seal such that the metal panel overlay together with the asphalt roof is adapted to create a watertight seal.

Abstract: A method and fastening device for use in heavy duty machinery for fastening a lining element to a surface of a body steel plate is disclosed. An assembly, a truck and a handling tool utilizing the method and fastening device is also disclosed.

Abstract: A system, device and method of framing an opening, such as a window, in a clad façade 12 structure to align the window units 22 to be positioned adjustably so that the exterior sight lines align the windows without custom fabrication of the clad façade. This allows irregular variations in the original building structure to be eliminated by a perfectly aligned façade. A frame 20 has wide flanges 40 to allow the defined inner box frame area 34 to be positioned and then the frame can be shimmed to that position. Sections of frame 20 are joined by an angled member 54 with flat portion which are received in slots 56 in frame sections at their edges.

Abstract: A rotor of a rotary electric machine includes a rotor core having a magnet insertion hole and a permanent magnet. A magnet insertion hole has an inner diameter side wall surface and an outer diameter side wall surface. A permanent magnet has an inner diameter surface and an outer diameter surface. The rotor further includes a foam adhesive sheet provided at least either between the inner diameter surface and the inner diameter side wall surface or between the outer diameter surface and the outer diameter side wall surface. The foam adhesive sheet includes a foam layer and an adhesive layer stacked in a radial direction. The foam layer is closely fixed to the permanent magnet. The adhesive layer faces the magnet insertion hole. The foam layer is foamed, the adhesive layer closely contacts with the magnet insertion hole, and the permanent magnet is fixed to the magnet insertion hole.

Abstract: An embodiment floor connection structure of a vehicle under body configured to connect a floor panel to side sills on both sides of the under body includes a plurality of box panels, each of the box panels including an opened portion and a closed portion, wherein the box panels are configured to be connected to each other along a vehicle width direction, and wherein a first box panel is coupled to a first side sill through the opened portion of the first box panel and a second box panel is coupled to a second side sill through the opened portion of the second box panel.

Abstract: 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.

Abstract: Disclosed is a press formed product which is formed from a single steel sheet. The press formed product includes two vertical wall portions, a top plate portion which connects two vertical wall portions with each other, and a projecting portion which projects from at least one boundary portion of two boundary portions each of which connects the vertical wall portion and the top plate portion with each other. In the projecting portion, a steel sheet extending from the vertical wall portion and a steel sheet extending from the top plate portion project from the boundary portion so as to overlap at an overlapping portion located at least at a distal end of the projecting portion. The projecting portion is present at least at a portion of the press formed product in a longitudinal direction. An angle formed between the top plate portion and the overlapping portion is larger than 180°.

Abstract: The bridge construction system and method according to the present invention provides a lightweight, efficient, economical, long-lasting, and easily implemented composite steel structure that can be filled with concrete in place for the construction of pedestrian and smaller road bridges, specifically those found in rural areas. The bridge construction system of the present invention is unique in that it is a steel-frame reinforced composite bridge with decking and rebar caging that provides a permanent, non-removable form for poured-in-place concrete. The composite nature of the bridge allows for installation of the bridge to take place in one day, while the entire process from site preparation such as grading and excavation to cleanup takes a week or less. The quick installation of the bridge is designed to have a minimally invasive impact on the surrounding environment.

Abstract: A combination drip edge, rake flashing, gutter with nail flange that is useful for water harvesting and securing of shingles in adverse weather conditions.

Abstract: An elongate profile (1) having a first portion (2) and a second portion (3), the first and second portions (2, 3) being joined together at a first joining portion (JP1), the first and second portions (2, 3) being non collinear, the joining portion (JP1) comprising an array of raised or rebated formations (10a), each formation extending across the joining portion (JP1) in a direction which is non-parallel to the principal axis of the profile and flat lands being provided between successive formations in an array (10A) and the pitch (P) between successive formations in an array being from 2 to 20 times, for example from 5 to 15 times, the thickness (G) of the flatlands.

Abstract: A damping and stiffening assembly for a body panel. The assembly includes a first damping patch and a second damping patch that are attached to the body panel. The assembly also includes a stiffening lamination that has a first end, a middle portion, and a second end. The first end of the stiffening lamination attaches to and overlaps the first damping patch. The middle portion of the stiffening lamination attaches to the body panel. The second end of the stiffening lamination attaches to and overlaps the second damping patch.

Abstract: A support apparatus configured to support free lengths of parallel components in residential implementations comprising a rectangular section and connection flaps. The rectangular section defines support holes and includes a rectangular section width that matches a width of two standard adjacent studs in a residential implementation. The support holes are configured to support and to separate free lengths of multiple, substantially parallel components. A first connection flap extends from a first end of the rectangular section. A second connection flap extends from a second end of the rectangular section. The rectangular section includes a first length between the first connection flap and the second connection flap configured to match a first standard distance between the two adjacent studs. The support apparatus includes a second length inclusive of the first connection flap and the second connection flap configured to match a second standard distance between two adjacent studs.

Abstract: A building product which includes a hollow extrudate, unitary reinforcing ribs resisting collapse of the hollow extrudate and, in an embodiment, an exterior surface comprises a low gloss, textured pattern having a gloss level of less than about 50 on a 60° glossmeter, in which the textured pattern extends for about 2-20 feet. Methods and an apparatus for manufacturing such products are also provided by this invention.

Abstract: Disclosed is a sheet that comprises protrusions comprising a first portion extending from a base by a second portion where a second portion diameter is less than a first portion diameter. Also disclosed is a sheet that comprises a first portion and a second portion extending from a symmetry plane, where the protrusions repeat across a length of the sheet along the symmetry plane where the first portion has a first portion diameter and the second portion has a second portion diameter and where the second portion diameter is less than the first portion diameter. A sheet comprising a plurality of cavities across a width of the sheet where each cavity extends the length of the sheet and the cavity has an opening diameter that is smaller than a body diameter is also disclosed.

Abstract: A structural reinforcing panel system for reinforcing a structure against lateral or shear and uplift loads. The system includes a structural reinforcing panel which is installed between the studs in a wall of the structure. The panel is connected to the foundation of the structure and the sill or header. Two or more panels may be connected together at a corner, within a wall, ceiling or floor. The roof rafters of the structure may be attached to a top plate bracket mounted to the sill plate, which may also be connected to one or more structural reinforcing panels, provides uplift load support for the structure. Movable reinforcing panels may be used to barricade openings in the building structure such as windows. For structures built on piers, a pier mount bracket provides a linkage to one or more structural reinforcing panels.

Abstract: A roof system includes a roof panel formed of concrete and an architectural surface such as a corrugated surface. A first layer of reinforcing material is disposed along and spaced inwardly from a first surface of the roof panel, and an optional second layer of reinforcing material is disposed along and spaced inwardly from a second surface of the roof panel. The first layer of reinforcing material is spaced from the second layer of reinforcing material. The reinforcing material may be formed of fiber-reinforced polymer mesh, made with carbon fibers or glass fibers. FRP rebar may be used in conjunction with FRP mesh to provide added structural strength. The roof panel may include one or more elongated ribs having a thickness greater than adjacent portions of the roof panel. In other aspects, concrete structures with reinforcing material may be used for either roof panels or wall applications.

Abstract: An end wall panel for an arch-style steel building is disclosed. The end wall panel is fabricated from metal sheet and consists of a plurality of upper flanges spaced apart from one another. The upper flanges are connected to lower flanges by a web section extending at an angle from the upper flange. Flange stiffeners also extend at an angle from the outermost upper flanges. The end wall panel provides increased strength in an arch-style steel building and can withstand critical wind loads without additional stiffeners. The end wall panel is also inexpensive to manufacture and install into an arch-style steel building.

Abstract: A structural reinforcing panel system for reinforcing a structure against lateral or shear and uplift loads. The system includes a structural reinforcing panel which is installed between the studs in a wall of the structure. The panel is connected to the foundation of the structure and the sill or header. Two or more panels may be connected together at a corner, within a wall, ceiling or floor. The roof rafters of the structure may be attached to a top plate bracket mounted to the sill plate, which may also be connected to one or more structural reinforcing panels, provides uplift load support for the structure. For structures built on piers, a pier mount bracket provides a linkage to one or more structural reinforcing panels.

Abstract: A high strength low density panel. The panel is formed of sections. Each section will preferably have the shape of a cuboid or a prism. At least one face of each section is provided with a buttress. The sections are preferably inverted relative to each other. The sections are configured so that they share sidewalls with each adjacent section, which creates a series of braces extending across the panel. The prismatic sections are paired to form cuboids. These cuboids have a diagonal internal wall. The internal walls of the cuboids align in the panel to create braces that extend across the panel at an angle to the other braces. Finally, all of the buttresses are configured so that the buttress of adjacent and cater-corner sections meet their respective common section corners at substantially the same point.

Abstract: A fiberboard panel is formed from at least one corrugated sheet of molded cellulose fiber material formed from a mixture of at least two different cellulose fibers, one of the fibers comprising bovine processed fiber (BPF). The panel has opposite first and second faces and is formed with alternating ribs and grooves. The ribs on the first face each have a first, flat peak and the ribs on the second face each have a second, flat peak facing in the opposite direction to the first peaks, the opposing first and second flat peaks forming opposing faces of the sheet. Each first peak is connected to adjacent second peaks by angled webs forming opposite side faces of ribs. The corrugated sheet may be sandwiched between two flat sheets of the same material to form a composite panel.

Abstract: A corner protector can be mated with an article of furniture having a corresponding notch. The corner protector can include a body having an upper surface, a lower surface, a first side, a second side, and a blunted corner. Generally, in the mated configuration the blunted corner is oriented outwardly, thus providing a rounded surface that can reduce injury in the event of an impact with the article of furniture.

Abstract: A baffle vent incorporates an integral drift blocker portion that is connected to the main body portion of the baffle vent by a generally planar transition portion to allow the drift blocker portion to move relative to the main body portion. The main body portion is formed with transversely extending stiffening ribs, while the drift blocker portion is formed with longitudinally extending stiffening ribs with the transition portion being devoid of stiffening ribs to maintain flexibility in the transition portion. The baffle vent structure can be formed in large sheets that span several roof rafters with multiple integral drift blocker portions formed to be positioned between the roof rafters. A deck baffle panel is also provided in a configuration similar to the main body portion to be installed beneath attic flooring in manufactured housing to allow an air flow to remove moisture from beneath the attic flooring.

Abstract: Systems for wall sections, wall panels assembled from sections, walls assembled from panels, and shelters assembled from walls. In embodiments, a wall for a shelter is disclosed, the wall comprising a frame comprising frame segments forming an n-sided closed polygon; at least one wall panel, each wall panel contained within the frame; and a plurality of flats, each flat attached to and overlapping a frame segment and a portion of a wall section, thereby retaining each wall panel within the frame. In embodiments, a shelter is disclosed, the shelter comprising a plurality of walls, each wall comprising a frame comprising frame segments forming an n-sided closed polygon; at least one wall panel, each wall panel contained within the frame; and a plurality of flats, each flat attached to and overlapping a frame segment and a portion of a wall section, thereby retaining each wall panel within the frame.

Abstract: An end wall panel for an arch-style steel building is disclosed. The end wall panel is fabricated from metal sheet and consists of a plurality of upper flanges spaced apart from one another. The upper flanges are connected to lower flanges by a web section extending at an angle from the upper flange. Flange stiffeners also extend at an angle from the outermost upper flanges. The end wall panel provides increased strength in an arch-style steel building and can withstand critical wind loads without additional stiffeners. The end wall panel is also inexpensive to manufacture and install into an arch-style steel building.

Abstract: The integrally stiffened panel includes one or more stiffeners oriented in one direction, and one or more stiffeners oriented in a different direction. The stiffeners are integral with a sheet member and intersect at a joint. The joint is configured to incorporate a pocket at the stiffener intersections. The pocket geometry is inverse to the stiffener geometry, and thereby provides moment and stiffness continuity across the joint and between adjacent intersecting stiffeners.

Abstract: A lightweight concrete masonry unit for veneering the face of a building. The veneer block includes a body with planar front, top, bottom, and side surfaces with the top, bottom, and sides perpendicular to the front surface. One or more channels are formed in the rear surface. The depth of the channels are restricted to maintain no less than one inch of remaining wall thickness between the channel bottoms and the opposite front surface. The novel shape and larger minimum wall thickness of the lightweight veneer block enables production on a commercial block machine within the standard cycle time, provides weight and raw material cost savings up to 50%, and allows block heights that are not attainable with conventional hollow core veneer blocks.

Abstract: An end wall panel for an arch-style steel building is disclosed. The end wall panel is fabricated from metal sheet and consists of a plurality of upper flanges spaced apart from one another. The upper flanges are connected to lower flanges by a web section extending at an angle from the upper flange. Flange stiffeners also extend at an angle from the outermost upper flanges. The end wall panel provides increased strength in an arch-style steel building and can withstand critical wind loads without additional stiffeners. The end wall panel is also inexpensive to manufacture and install into an arch-style steel building.

Abstract: A light-transmitting roof panel assembly, having the same shape as adjoining metal roof panels in a standing seam metal roof, includes an outer transparent panel made of a polymeric material and an inner reinforcing panel made of perforated metal. The inner and outer panels nest together and lie flush with the roof. Crimpable side corrugation pieces are attached to the reinforcing panel so that the assembly can be connected to neighboring roof panels by seaming.

Abstract: Membrane body (1) comprising at least one pair of panels (10, 11) connected together in an adhesive manner and for each pair of said panels (10, 11), at least one flexible sheath (15) arranged stably according to a set pattern to resist membrane stress acting on the panels (10, 11); each sheath (15) housing a respective tie rod (16), connected to the panels (10, 11) in an end position in a set manner in such a way as to be suitable for resisting normal stress to free the panels (10, 11) from the respective membrane stress, thereby maintaining the—group of the panels (10, 11) flexible and maintaining the corresponding production method.

Abstract: A structural reinforcing panel system for reinforcing a structure against lateral or shear and uplift loads. The system includes a structural reinforcing panel which is installed between the studs in a wall of the structure. The panel is connected to the foundation of the structure and the sill or header. Two or more panels may be connected together at a corner, within a wall, ceiling or floor. The roof rafters of the structure may be attached to a top plate bracket mounted to the sill plate, which may also be connected to one or more structural reinforcing panels, provides uplift load support for the structure. For structures built on piers, a pier mount bracket provides a linkage to one or more structural reinforcing panels.

Abstract: A building panel for residential and commercial construction uses a plurality of insulating blocks connected together by adhesive. The insulation blocks are typically made of foam. A plurality of support members are disposed on opposite sides of the insulating blocks and offset with respect to the adjacent support member. The support member are typically made of metal and can have different shapes including “T” shape, “U” shape, and “L” shape. Each support member has a head portion in contact with a surface of the insulating block and a stem portion extending into the insulating block and having a length less than a width of the insulating block so that a thermal conduction path of the support member is discontinuous across the insulating block. The panel can be used as a curtain wall panel in high-rise construction, as well as bodies for aircraft, automotive, and marine applications.

Abstract: Membrane body (1) comprising at least one pair of panels (10, 11) connected together in an adhesive manner and for each pair of said panels (10, 11), at least one flexible sheath (15) arranged stably according to a set pattern to resist membrane stress acting on the panels (10, 11); each sheath (15) housing a respective tie rod (16), connected to the panels (10, 11) in an end position in a set manner in such a way as to be suitable for resisting normal stress to free the panels (10, 11) from the respective membrane stress, thereby maintaining the group of the panels (10, 11) flexible and maintaining the corresponding production method.

Abstract: A modular enclosure, such as a shed, may include a floor constructed from one or more floor panels. The floor panels, which may be constructed from blow-molded plastic, may include a pattern disposed on the upper surface. The floor panels may also include depressions that are formed in the lower surface and extend towards the upper surface. If desired, the depressions may be generally aligned with a portion of the pattern in the upper surface and the depressions may have a length that is less than the distance separating the upper surface and the lower surface. Advantageously, the depressions may be sized and configured to increase the strength of the floor panels. In addition, the floor panels may include a pattern disposed on the lower surface and the depressions may be at least partially disposed in the pattern. The patterns on the opposing sides of the panels may be generally offset and/or have different orientations.

Abstract: A light-transmitting roof panel assembly, having the same shape as adjoining metal roof panels in a standing seam metal roof, includes an outer transparent panel made of a polymeric material and an inner reinforcing panel made of perforated metal. The inner and outer panels nest together and lie flush with the roof. Crimpable side corrugation pieces are attached to the reinforcing panel so that the assembly can be connected to neighboring roof panels by seaming.

Abstract: Provided is a high manufacturing method of the production efficiency for a wood cement board that has a pattern of recesses and projections. The method for making a wood cement board having a pattern of recesses and projections on its surface, comprising: dispersing a raw material mixture onto a template provided with recesses corresponding to the portions of the wood cement board on which projections are formed, while conveying the template, thereby forming a mat; pressurizing only a section of the mat raw material mixture that is layered on the recesses of the template from above; leveling the surface of the partly pressurized mat; and pressing the resulting mat and the template together, followed by hardening and curing.

Abstract: An improved cementitious panel of the type which, in use, is supported, with its upper surface in biaxial compression, by steel beams and forms part of a deck or roof in a modular structure, wherein the improvement comprises a single layer of reinforcement in the panel.

Abstract: A method of designing a virtual model for the manufacture of a blended body structure having two or more constituent elements, the method comprising the step of defining a parameterised, theoretical procedural skin from which two or more datum skins are generated, each datum skin defining a production outline of an airframe structure constituent element. The use of a procedural model with embedded parameterisation and associativity to derive the datum skins reduces the time taken to produce the datum skins and enables feature modifications to be incorporated into models quickly and consistently.

Abstract: A roof ventilation apparatus for a sloped roof having a cap and base plate is provided. The cap has a top surface and a bottom surface. The bottom surface has a flange that defines an opening to a cavity formed between the top and bottom cap surface. The cavity provides a path for air exchange from a roof opening through an air passage formed between the flange and cap top. The base plate has a collar or curb surrounding an aperture that fits inside the cap bottom cavity. The base plate preferably is shaped such that when installed on the sloped roof the cap entirely covers the base plate. Preferably, the base plate includes a collar and an angled edge configured to channel moisture that seeps within the vent cap.