Reynolds American, the maker of Camel cigarettes, is barring smoking in its offices and buildings. Beginning next year, the use of cigarettes, cigars or pipes will no longer be permitted in the company’s offices, conference rooms and elevators. Smoking is already prohibited on factory floors and in cafeterias. A spokesman, David Howard, said that Reynolds would still allow the use of smokeless tobacco products, including electronic cigarettes, moist snuff and pouches of tobacco called snus. “We’re just better aligning our tobacco use policies with the realities of what you’re seeing in society today,” Mr. Howard said. Reynolds plans to build indoor smoking areas for those who still want to light up indoors. The policy will go into effect once those are built. Through its subsidiaries, Reynolds also makes Pall Mall cigarettes, Grizzly smokeless tobacco and Vuse-branded electronic cigarettes.