Table 702.8 says, for example that for 1/2-in.
The IgCC dumps that approach, states that all pipes will be considered to be the same, and states how many feet of pipe can be used, Klein said. The problem with calculating ounces, however, was that each type of pipe - copper, PEX, PE or CPVC - has a different interior volume.
Previous attempts to limit the amount of wasted water mandated how many ounces of water could be in the pipe between the source of hot water (such as the recirculating loop) and the fitting. To reduce this waste of water and energy, most green codes, including the IgCC, require either an on-demand hot water recirculation loop or heat tracing on the pipe. Long waits for hot water are the bane of conservation experts who joke about starting the shower and then making a pot of coffee while waiting for hot water to arrive. ICC works on prescriptive green construction codeĪnother simplification involves how much pipe can be used for hot water systems. Steam pipe insulation would be twice as thick.Ĭodes, most efficient products take center stage at WaterSmart Innovations 2011 The vast majority of pipe installed in the U.S., however, is 2-in. If large pipe is in a commercial building, the engineer can specify thicker insulation if he so desires.
Ashrae 90.1 insulation thickness code#
Other codes and standards, such as ASHRAE’s Standard 90.1, contain more complicated instructions on pipe insulation, but the IgCC keeps it simple - insulation thickness is equal to the pipe diameter, up to 2-in., explained Gary Klein, Affiliated International Management LLC, who submitted numerous code change proposals at the hearing. Thus, ½-in. It also has provisions intended to make the code simple to follow without performing calculations.įor example, Section 607.5 on pipe insulation for HVAC systems also carries over to pipe insulation for plumbing. The code includes many water and energy saving features that will be familiar with anyone who has followed other green codes, standards and programs. PHOENIX - The International Code Council has finalized its International Green Construction Code and is readying it for publication by Spring of 2012.