The disclosed solar plank snow fence performs two separate but unique functions in one structure. The structure is capable of harnessing solar power through the use of photovoltaics to produce electricity and acting as a snow fence to minimize the effects of blowing snow down-wind from the structure. In embodiments, based on weather conditions, detected at a site by sensors utilized by the solar snow fence, the disclosed fence is capable of autonomously transitioning between solar tracking mode and snow fence mode according to weather conditions. In snow fence mode, the disclosed solar plank snow fence performs the function of a snow fence with a tracking position fixed to a predetermined position or angle. In embodiments, the tracking position (angle) may be between 0 and 15 relative to the ground and may be positioned facing the prevailing wind direction.

The disclosed solar plank snow fence performs two separate but unique functions in one structure. The structure is capable of harnessing solar power through the use of photovoltaics to produce electricity and acting as a snow fence to minimize the effects of blowing snow down-wind from the structure. In embodiments, based on weather conditions, detected at a site by sensors utilized by the solar snow fence, the disclosed fence is capable of autonomously transitioning between solar tracking mode and snow fence mode according to weather conditions. In snow fence mode, the disclosed solar plank snow fence performs the function of a snow fence with a tracking position fixed to a predetermined position or angle. In embodiments, the tracking position (angle) may be between 0 and 15 relative to the ground and may be positioned facing the prevailing wind direction.

A silt fence includes a plurality of spaced stakes and a silt fence fabric coupled to the stakes wherein the silt fence fabric is a nonwoven needle punched fabric having a thickness of at least 5.25 mm, a denier size of 10-25 and a weight of 9-24 oz/square yard. The silt fence fabric may be asymmetrical dual sided needle punched wherein the downstream side of the fabric is punched 2-6 times more than the upstream side. The silt fence fabric may have a transverse direction orientation of fibers forming the fabric. The fence may include two independent tensioning members. The silt fence may include at least one vertical transverstivity cutoff element that prevents water from migrating from above the cutoff element within the fabric to below the cutoff element.

A silt fence includes a plurality of spaced stakes and a silt fence fabric coupled to the stakes wherein the silt fence fabric is a nonwoven needle punched fabric having a thickness of at least 5.25 mm, a denier size of 10-25 and a weight of 9-24 oz/square yard. The silt fence fabric may be asymmetrical dual sided needle punched wherein the downstream side of the fabric is punched 2-6 times more than the upstream side. The silt fence fabric may have a transverse direction orientation of fibers forming the fabric. The fence may include two independent tensioning members. The silt fence may include at least one vertical transverstivity cutoff element that prevents water from migrating from above the cutoff element within the fabric to below the cutoff element.

A foldable windproof unit, a large-span windproof net structure thereof, and a windproof method are disclosed. The foldable windproof unit comprises a flexible windproof net, towers arranged at intervals, and a load-bearing rope erected on the two towers. The tower on one side is provided with a horizontal pulley assembly, and the tower on the other side is provided with two vertical pulleys. The top edge of the flexible windproof net is slidably connected to the load-bearing rope by means of a plurality of hanging structures. The foldable windproof unit further comprises a traction rope, the traction rope is arranged on the horizontal pulley assembly in a sleeving manner, and the two free ends of the traction rope extend to respectively bypass the two vertical pulleys and are connected to winding mechanism. The hanging structure close to the tower on one side is fixedly connected to the traction rope.

Disclosed is an outdoor privacy screen for space-dividing residential and commercial landscapes with innovatively, snap fasteners that attach to a rigid horizontal support bar which suspends, for breeze-propelled, independent and not interconnected for motion, a decorative fabric panel that is easily secured, removed, and interchanged by means of sliding the panel's top hem pocket onto and across the bar. The fabric panel bottom edge may overlap an additional panel top edge to form a louver arrangement affording privacy; sunlight mitigation; and, airflow allowance for the creation of a wind resistant privacy partition.

A fence includes a wall panel portion having an upper edge and a lower edge, and a plurality of tubular pockets running across the wall panel between the upper edge and the lower edge. The tubular pockets each configured to receive a mounting post. The upper edge and the lower edge can each include a channel in which a draw cord is threaded. The fence can further include an apron portion extending from the lower edge of the wall panel portion. Methods of installing the fence are also provided.

A fence includes a wall panel portion having an upper edge and a lower edge, and a plurality of tubular pockets running across the wall panel between the upper edge and the lower edge. The tubular pockets each configured to receive a mounting post. The upper edge and the lower edge can each include a channel in which a draw cord is threaded. The fence can further include an apron portion extending from the lower edge of the wall panel portion. Methods of installing the fence are also provided.

Sediment-control fences designed to withstand hydrostatic forces associated with elevated backwater against the fence are disclosed. The fences are made of anisotropic fabric having different mechanical properties such as strength and stiffness in the machine direction versus the transverse direction. The anisotropic fabric may include fibrillated yarns in one direction and monofilaments in another direction. The sediment-control fences may be used without the necessity of wire or chain-link backed supports that are conventionally used to resist structural failure due to hydraulic overtopping of the fences.

Sediment-control fences designed to withstand hydrostatic forces associated with elevated backwater against the fence are disclosed. The fences are made of anisotropic fabric having different mechanical properties such as strength and stiffness in the machine direction versus the transverse direction. The anisotropic fabric may include fibrillated yarns in one direction and monofilaments in another direction. The sediment-control fences may be used without the necessity of wire or chain-link backed supports that are conventionally used to resist structural failure due to hydraulic overtopping of the fences.