Nevada C-10 Landscape Contractor Practice Exam

The design stress for PVC pipe coded 1120 is determined based on industry standards for PVC materials. For PVC materials, the hydrostatic design stress is a critical factor in determining the appropriate rating for solid wall pipes.

When examining the different PVC codes, it's important to consider how they relate to their specifications. PVC 2110 has a rated hydrostatic design stress of 1000 psi. The PVC 1120 pipe is typically designated with a higher rating, which reflects its enhanced physical properties, allowing it to handle greater stress.

As per the applicable standards and codes, PVC 1120 is designed to handle a hydrostatic design stress that is 1.5 times that of PVC 2110. Since the design stress of PVC 2110 is established at 1000 psi, multiplying this by 1.5 yields a design stress of 1500 psi.

However, if you reference the standards more closely, you will find that PVC 1120 is often denoted with an even higher hydrostatic design stress—commonly noted as 2000 psi in various engineering contexts. This rating accounts for the material's improved characteristics and durability.

Therefore, the design stress for PVC pipe coded 1120 is 2000 psi, which