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Cart Test Procedures (Page 2). <br />4. BOTTOM WEAR <br />Carts are loaded with 100 pounds of water and dragged on a horizontal asphalt surface <br />at a rate not to exceed 5 MPH. When water begins to leak, the test is discontinued and <br />the distance is recorded. <br />5. WIND RESISTANCE <br />An empty cart is placed in a wind test fixture. Wind velocity is increased to at least 40 MPH <br />against the front, back, and either side. The point at which the cart tips over is noted. <br />Wind on the street can come from not only inclement weather, but also from passing <br />vehicles. This test shows not only how well a cart will stand up in the wind, but also <br />indicates how easily it may be tipped over by dogs or other animals. <br />6.LOADING AND UNLOADING TEST <br />The test cart is loaded with 336 pounds of static ballast and cycled at least 520 times, or <br />until failure occurs. A cycle is defined as grab, squeeze, lift, dump, replace on ground, <br />and release (re-load after each dump). <br />The cart is visually inspected for cracks, any indication of stress failure, or any other <br />indication of damage. <br />This test is described in greater detail in the ANSI guidelines outlined in Z245.30-1999; <br />Appendex D. The test simulates the approximate one pickup per week for a 10 year <br />period. It is an important indicator of whether or not a cart will last through its intended <br />life.