Abstract: A storm water runoff and erosion control device includes a rigid frame covered by a layer of mesh material. The frame defines an interior space that is filled with filtration material. The device may be configured as a wattle having an elongated frame with a triangular cross-section. The wattle may be extended along the contour of a hill to reduce erosion, or it may be placed at the entrance to a drainage inlet to slow the velocity of, and filter sediment and contaminants from, water entering the inlet. Alternatively, the device may be a compact filter that is a cube, cylinder, sphere, or other suitable geometry. A plurality of these compact filters may be placed in the basin of a storm water drain, and piled sufficiently high to cover the outlet from the basin. Thus, all the water in the basin must pass through the compact filters before exiting.

Abstract: A storm water runoff and erosion control device includes a rigid frame covered by a layer of mesh material. The frame defines an interior space that is filled with filtration material. The device may be configured as a wattle having an elongated frame with a triangular cross-section. The wattle may be extended along the contour of a hill to reduce erosion, or it may be placed at the entrance to a drainage inlet to slow the velocity of, and filter sediment and contaminants from, water entering the inlet. Alternatively, the device may be a compact filter that is a cube, cylinder, sphere, or other suitable geometry. A plurality of these compact filters may be placed in the basin of a storm water drain, and piled sufficiently high to cover the outlet from the basin. Thus, all the water in the basin must pass through the compact filters before exiting.

Abstract: Stormwater runoff and erosion control devices include carpets or blankets, wattles, and compact drainage filters. A carpet or blanket is a sheet of mesh material having a border formed of a different material than the mesh material. Wattles and compact drainage filters include mesh material supported by a rigid frame. In preferred embodiments, the mesh material includes biochar or activated carbon. Blankets and carpets may be positioned above or suspended below drainage grates in a storm water runoff system, and held in place by magnets. Wattles may be placed on hillsides, or between concrete barriers and drainage grates. Compact drainage filters may be placed at the outlets of catchment basins.

Abstract: Stormwater runoff and erosion control devices include carpets or blankets, wattles, and compact drainage filters. A carpet or blanket is a sheet of mesh material having a border formed of a different material than the mesh material. Wattles and compact drainage filters include mesh material supported by a rigid frame. In preferred embodiments, the mesh material includes biochar or activated carbon. Blankets and carpets may be positioned above or suspended below drainage grates in a storm water runoff system, and held in place by magnets. Wattles may be placed on hillsides, or between concrete barriers and drainage grates. Compact drainage filters may be placed at the outlets of catchment basins.

Abstract: Traffic signs that facilitate portability are disclosed. In certain embodiments, they are designed to be lighter and have fewer steps involved in their set up, preferably involving only one person. The design of certain embodiments also allows multiple signs to be transported together, and facilitates air flow through the signs.

Abstract: Traffic signs that facilitate portability are disclosed. In certain embodiments, they are designed to be lighter and have fewer steps involved in their set up, preferably involving only one person. The design of certain embodiments also allows multiple signs to be transported together, and facilitates air flow through the signs.

Abstract: Traffic signs that facilitate portability are disclosed. In certain embodiments, they are designed to be lighter and have fewer steps involved in their set up, preferably involving only one person. The design of certain embodiments also allows multiple signs to be transported together, and facilitates air flow through the signs. Certain embodiments include generally horizontal panels with breakaway or fracture paths so as to improve crashworthiness and safety of the traffic sign.

Abstract: Traffic signs that facilitate portability are disclosed. In certain embodiments, they are designed to be lighter and have fewer steps involved in their set up, preferably involving only one person. The design of certain embodiments also allows multiple signs to be transported together, and facilitates air flow through the signs. Certain embodiments include generally horizontal panels with breakaway or fracture paths so as to improve crashworthiness and safety of the traffic sign.

Abstract: Traffic signs that facilitate portability are disclosed. In certain embodiments, they are designed to be lighter and have fewer steps involved in their set up, preferably involving only one person. The design of certain embodiments also allows multiple signs to be transported together, and facilitates air flow through the signs.