Since the incorporation of PVC as pipe material in the second half of 20^th century, its use in the design, rehabilitation and expansion of Water Distribution Networks (WDS) has been widely assimilated. However, materials with higher roughness were more commonly used and with these materials were carried out the studies on which are based the most used design equations (Colebrook-White, Darcy-Weisbach and Hazen-Williams). In this work, the applicability of these equations is tested using PVC as the material to verify their precision. Measurements of pressure loss in different assemblies for extents of Reynolds numbers ranging from 3x10⁴ to 5x10⁵ and relative roughness between 6x10^-4 and 2x10^-3 were performed. For small diameters, Blasius and Prandtl–von Kármán equations can be used to calculate the friction factor. On the other hand, for larger diameters, the Colebrook-White equation correctly describes the relationship between the friction factor and the Reynolds number.

由于PVC在20的第二半中掺入作为管材料^个 世纪，其在水中的配电网（WDS）的设计，恢复和扩张的使用已得到了广泛的同化。但是，具有较高粗糙度的材料更为常用，并且对这些材料进行了研究，这些研究基于最常用的设计方程式（Colebrook-White，Darcy-Weisbach和Hazen-Williams）。在这项工作中，使用PVC作为材料测试了这些方程式的适用性，以验证其精度。雷诺数范围从3x10 ⁴ 到5x10 ⁵ ，相对粗糙度在6x10 ^-4 到2x10 ^-3 之间的不同组件中的压力损失测量被执行。对于小直径，可以使用Blasius和Prandtl–vonKármán方程来计算摩擦系数。另一方面，对于较大的直径，Colebrook-White方程正确地描述了摩擦系数和雷诺数之间的关系。