CPC 402.0 / ASME A112.19.2
What it means on the job
high-rise office specifications call for 0.125 gallon per flush urinals (pint-flush). A 0.5 GPF urinal uses four times the water required and does not meet California water conservation requirements or the project's LEED enhanced commissioning targets.
Tested in 1 CraftIQ puzzle
- whats-wrongCRAC Unit Condensate Drain (high-rise office Level 31)
Related OTHER sections
California Title 24 Table 120.3-A
The insulation is too thin. Per T-24 Table 120.3-A, pipes in the 4-6 inch range operating at 141-200°F require 2.0 inches of insulation. The installer used the value for smaller pipes (under 1.25 inches) at the same temperature range, which is 1.5 inches. This is a common error — always cross-reference both the temperature range AND the pipe size column. The 0.5 inch shortfall means approximately 15-20% more heat loss, increased energy costs, and potentially exceeding the 140°F surface temperature limit for personnel protection.
Compressed Air & Gas Institute (CAGI) Best Practices / OSHA 1910.169
Aftercoolers condense large volumes of moisture from compressed air. Without an automatic drain, condensate accumulates and carries over into the distribution system, causing corrosion, instrument malfunction, and product contamination. Automatic drains are required for reliable moisture removal.
CPC 402.0 / ASME A112.18.1
This installation is correct. CPC 2022 requires non-residential lavatory faucets to have a maximum flow rate of 0.5 GPM at 60 PSI. The high-rise office specification matches this requirement. The 0.5 GPM rate is adequate for handwashing and meets California water conservation standards. The ASME A112.18.1 listing confirms the faucets are tested and certified to the applicable standard.
CPC 402.0 / ASME A112.19.2 / high-rise office Plumbing Specification
The installed urinals exceed the specified flush volume by 4x. high-rise office requires 0.125 GPF (pint-flush) urinals, not 0.5 GPF. While 0.5 GPF meets the CPC 2022 minimum standard, the project specification is more stringent for LEED water use reduction credits. The contractor must install the 0.125 GPF urinals specified. Using 0.5 GPF urinals would cause the project to fail its LEED water budget calculations and could jeopardize the entire LEED certification.
CPC 402.0 / California Green Building Standards
Per CPC 2022, kitchen faucets must default to 1.8 GPM maximum. The temporary increase to 2.2 GPM is permitted only for pot-filling or similar tasks and must require manual activation. The default setting must be 1.8 GPM or less.
CPC 604.1 / high-rise office Plumbing Specification
high-rise office specifications require Type L copper for above-floor domestic water piping. Type M has thinner walls and is not rated for the higher pressures found in high-rise buildings. Type K is required for underground installations.
CraftIQ explanations are original educational commentary written in trade language and verified against the cited standards. Always confirm requirements against the code edition adopted by your jurisdiction — this is training material, not a substitute for the code book or your AHJ.