A structure and associated methodology for framing a wall having top and bottom runners supporting respective opposing ends of each of a plurality of upright studs. The top runner has a planar base and a track extending from the base and forming therewith an enclosure configured to operably capture top ends of the studs and compensate for vertical deflection. The track defines a laterally-directed slot configured for installing a fastener through to connect to the stud inside the enclosure. The track further defines indicia visually presenting a conformance-comparison of each stud's length to a predetermined threshold before the fastener is installed, the threshold related to a predetermined operable clearance between each stud's end and the base inside the enclosure.

A structure and associated methodology for framing a wall having top and bottom runners supporting respective opposing ends of each of a plurality of upright studs. The top runner has a planar base and a track extending from the base and forming therewith an enclosure configured to operably capture top ends of the studs and compensate for vertical deflection. The track defines a laterally-directed slot configured for installing a fastener through to connect to the stud inside the enclosure. The track further defines indicia visually presenting a conformance-comparison of each stud's length to a predetermined threshold before the fastener is installed, the threshold related to a predetermined operable clearance between each stud's end and the base inside the enclosure.

A shearwall is disclosed for use in lightweight or other constructions to transmit lateral shear forces and dissipate energy on the construction. In examples, the shearwall includes a central panel formed of wood, and side plates formed of steel. The side plates may be affixed at lower corners of first and second opposed surfaces of the central panel. Each side plate may include a fastening plate for affixing the side plate to the central panel, and a restraint plate which fits within a reduced area section of the central panel between the first and second surfaces.

A shearwall is disclosed for use in lightweight or other constructions to transmit lateral shear forces and dissipate energy on the construction. In examples, the shearwall includes a central panel formed of wood, and side plates formed of steel. The side plates may be affixed at lower corners of first and second opposed surfaces of the central panel. Each side plate may include a fastening plate for affixing the side plate to the central panel, and a restraint plate which fits within a reduced area section of the central panel between the first and second surfaces.

The present disclosure is a method and apparatus for protecting building-related elements from collision damages. The apparatus can be designed to withstand high-impact collisions such as those caused by errant operation of heavy equipment. The method and apparatus are intended to be applicable to buildings already constructed and do not have to be implemented or considered before or during building design. In one exemplary embodiment, the apparatus can protect downspouts of warehouse sprinkler systems from collision damage that could result in pipe eruption.

The present disclosure is a method and apparatus for protecting building-related elements from collision damages. The apparatus can be designed to withstand high-impact collisions such as those caused by errant operation of heavy equipment. The method and apparatus are intended to be applicable to buildings already constructed and do not have to be implemented or considered before or during building design. In one exemplary embodiment, the apparatus can protect downspouts of warehouse sprinkler systems from collision damage that could result in pipe eruption.

The present invention provides a cross beam of a canopy, which addresses the problem that existing cross beams cannot simultaneously ensure convenience of assembly and guarantee stability in use. The present cross beam of a canopy comprises a plurality of hollow elongated beams, an inner side surface of each of the beams has at least one protruding and elongated protrusion along a length direction of the beams, each of the protrusions is provided with an mounting hole or a mounting groove penetrating along the length direction of the beams, at least one long rod is inserted into the mounting holes or the mounting grooves to connect all the beams in series, and two ends of the long rod protrude out of the beams and are detachably connected with a locking fastener respectively. The present invention ensures convenience of installation and guarantees the assembled cross beam has good stability.

The present invention provides a cross beam of a canopy, which addresses the problem that existing cross beams cannot simultaneously ensure convenience of assembly and guarantee stability in use. The present cross beam of a canopy comprises a plurality of hollow elongated beams, an inner side surface of each of the beams has at least one protruding and elongated protrusion along a length direction of the beams, each of the protrusions is provided with an mounting hole or a mounting groove penetrating along the length direction of the beams, at least one long rod is inserted into the mounting holes or the mounting grooves to connect all the beams in series, and two ends of the long rod protrude out of the beams and are detachably connected with a locking fastener respectively. The present invention ensures convenience of installation and guarantees the assembled cross beam has good stability.

The present invention provides a semi-active vibration absorption and energy dissipation control system for restraining vortex-induced vibration of bridges. It has the advantages and characteristics that: (1) springs are horizontally placed at the bottom of a beam, and lengths are not limited, so that the frequency requirement of a low-frequency target can be satisfied; (2) different target frequencies can be realized through different combinations of a plurality of springs connected in series and in parallel, so that multi-order vortex-induced vibration control needs are satisfied; (3) the springs made of fiber reinforced nylon materials are adopted, and are notched, so that a frequency implementation range can be greatly widened; (4) the material and the form of a mass body are not limited, and a water bag can be used, which has low cost and is convenient for disassembly, assembly and mass adjustment.

The present invention provides a semi-active vibration absorption and energy dissipation control system for restraining vortex-induced vibration of bridges. It has the advantages and characteristics that: (1) springs are horizontally placed at the bottom of a beam, and lengths are not limited, so that the frequency requirement of a low-frequency target can be satisfied; (2) different target frequencies can be realized through different combinations of a plurality of springs connected in series and in parallel, so that multi-order vortex-induced vibration control needs are satisfied; (3) the springs made of fiber reinforced nylon materials are adopted, and are notched, so that a frequency implementation range can be greatly widened; (4) the material and the form of a mass body are not limited, and a water bag can be used, which has low cost and is convenient for disassembly, assembly and mass adjustment.