Many London houses were being made from stone and timber and even brick and timber, instead of just timber and mud. However, chimneys were still a luxury of the rich. There were windows of glass and a guild of glaziers was chartered by the King. Many single-roomed houses added a second-floor room for sleeping, which was approached by a wooden or stone staircase from the outside. Goods were displayed on a booth outside the door of the house or hung in the windows. They were stored at night in the cellar. Over the booths swung huge signs, which had to be nine feet above street level to allow a man on horseback to ride underneath. There were no sidewalks. Street repair work for wages was supervised by a stone master. The streets sloped down from the middle so that the filth of the streets would run down the sides of the road. People sometimes threw the rubbish from their houses onto the street although they were supposed to cart it outside the city walls and to clean the frontage of their houses once a week. Dustmen scavenged through the rubbish on the streets. Pigs and geese were not allowed to run at large in the streets, but had to be fed at home. There were other city rules on building, public order, the use of fountains, precautions against fire, trading rights in various districts, closing time of taverns, and when refuse could be thrown into the streets, e.g. nighttime. Aldermen were constantly making rounds to test measures and weights, wine cups, the height of tavern signs, and the mesh of the fishing nets, which had to be at least two inches wide. They saw that the taverns were shut when curfew was rung and arrested anyone on the street after curfew who had a weapon, for no one with a sword was allowed on the streets unless he was some great lord or other substantial person of good reputation. Wards provided citizens to guard the gates in their respective neighborhood and keep its key. The city was so dense that nuisance was a common action brought in court, for instance, vegetable vendors near a church obstructing passageway on the street or plumbers melting their solder with a lower than usual shalt of the furnace so smoke was inhaled by people nearby. Crime in London was rare. Murder, burglary, highway robbery, and gross theft were punishable by hanging. Forgery, fraud, was punishable by the placement in the pillory or stocks or by imprisonment. Perjury was punished by confession from a high stool for the first offense, and the pillory for the second. Slander and telling lies was punished by the pillory and wearing a whetstone around one's neck. Prominent Londoners sought to elevate their social position by having their family marry into rural landholders of position.