24 Section 1 Preparing to Build require protective footwear in work areas where foot injuries could occur from falling or rolling objects, sharp objects, or electrical hazards. This footwear consists of special reinforced toes that will withstand a load of 2500 lb. A hard hat is to be worn whenever you are exposed to any possibility of falling objects. Many construction sites require all persons on the site to wear a hard hat at all times. Since carpenters must often work outside during cold weather, warmer protective headgear such as winter liners should be available. See Figure 2-5. Standard specifica- tions require that hard hats withstand a certain degree of denting. They must be able to resist breaking when struck with an 80 lb ball dropped from a 5′ height. A particulate mask is a disposable filter-type mask worn over the nose and mouth to protect the worker from inhaling dust and other fine par- ticles in the air, Figure 2-6. A particulate mask is not a respirator and is not adequate protection from contaminants that are immediately hazard- ous to your health. Prior to 1978, paint often contained lead. The dust created when sanding lead paint is hazardous. Goodheart-Willcox Publisher Figure 2-6. A particulate mask filters out dust. Nomar Figure 2-5. Hard hats are required wherever there is danger from falling objects. In cold weather, a winter liner can be worn under the hard hat. gpointstudio/iStock/Thinkstock Figure 2-4. Safety glasses must meet the specifica- tions of ANSI Z87.1-2003. Copyright Goodheart-Willcox Co., Inc.