Radiant heating will provide more heat where it is most needed (within a few feet of the floor), with a minimum of heat loss when compared with conventional systems. This applies to homes, garages, churches, or any high ceiling structures. The entire floor will radiate heat at a temperature level much below that required when concentrated heat is introduced into a room. A contractor may use either a grid pattern or a sinuous coil piping system (or both) when installing radiant heating. The grid can serve large areas with excellent thermal distribution and light hydraulic loads. Grid headers are usually made of larger pipe to simplify welding in the lateral pipe runs. For large areas a number of comprises between the grid system and the sinuous coil system can be worked out to take advantage of the virtues of each. Other refinements in design, such as a slightly greater concentration of piping on the side of a room having a large glass window area, can also be provided. The sinuous coil is usually easier to design if the plan is irregular. A sinuous coil system permits the use of random pipe lengths and minimizes both waste and the amount of welding. Sinuous coils, however, do require more bending and since water pressure rises rapidly with circuit length, this type of pipe heating system must be restricted to small areas. One of the big advantages of radiant heating in building construction is the fact that when the structural frame of a building has been completed, the heating system has also been completed and can be used to facilitate completion of the interior work. Fuel savings are also said to be possible with radiant heating. When compared with other systems in identical structures, its advocates claim that radiant heating can save as much as 30 percent in fuel costs.