FRICTION LOSS OF WATER PER 1000 FEET LENGTH OF DR17 HDPE PIPE BASED ON HAZEN & WILLIAMS FORMULA USING C = 150 Title DR17 HDPE Friction Loss Table, CPP,

Roughness coefﬁcient is based on the material of the pipe. For PVC pipe, the standard C value is 150. New HDPE pipe uses a C value of 140, but with use and corrosion a lower value is typically used. For HDPE pipe, a range of C values between 150 and 160 is

Design Stress to 800 psi for HDPE and to 630 psi for MDPE. AWWA C901 08 has been revised to incorporate the materials listed in Table 1 1. The Environmental liion Factor is used to adjust the pressure rating of the pipe in environments where specific

L 5 pipe length, ft n 5 coefficient of roughness (Manning’s equation and Kutter’s formula), dimensionless P w 5 wetted perimeter, ft P 1 5 maximum pressure, psi P 2 5 minimum pressure, psi Q or MGD 5 flow rate, gpm or ft3/s or gpd R Puhui Pipe manufacturer in China

The commonly recommended values of the Hazen Williams coefficient range from 130 to 140 regardless of the pipe diameter. Results of this investigation indie that the average Hazen Williams coefficients are 129, 136, 144, and 148 for pipe diameters of 13, 16, 19, and 22 mm, respectively.

The roughness coefficient of HDPE for calculations using the Colebrook White formula is ks. However, ‘Sewers for Adoption’ and certain other standards or codes of practice state that a general roughness figure of 0.6 ks should be applied, irrespective of pipe material.

## DESIGN COEFFICIENT TABLES Civil Engineering

Manning’s Equation roughness coefficient (n) Material Values for n Range Typical Design Value Polyethylene pipe Uncoated cast or ductile iron pipe Corrugated HDPE pipe Concrete pipe Puhui Pipe manufacturer in China

HDPE IRON PIPE SIZE (IPS) PRESSURE PIPE PE4710 DR 7 (333 psi) DR 7.3 (318 psi) DR 9 (250 psi) DR 9.3 (241 psi) DR 11 (200 psi) DR 13.5 (160 psi) Pipe Size Avg OD Min Wall Avg ID Weight lb/ft Min Wall Avg ID Weight lb/ft Min Wall Avg ID lb/ft lb/ft Puhui Pipe manufacturer in China

Pipe size also affects velocity. Given a constant flow rate, decreasing pipe size increases the water’s velocity, which increases friction. 3. The roughness of the inside of the pipe: Pipe inside wall roughness is rated by a “C” factor, which is provided by the

Roughness (Hydraulic): defaults to the smoothest values given in Australian Standard 2200, but may be overwritten by entering the average roughness (in mm) of the internal pipe surface. Standard Pipe or Cross section Type : select either a standard pipe or the type of cross section (circular, square etc.) of the pipe.

Head loss coefficient K BS EN 752 Plain/reinforced concrete pipe BS 5911 1 Prestressed concrete pipe BS 5911 5 and BS EN 639 & 642 Vitrified clay pipe BS 65 and BS EN 295 Mild HDPE pipe

Engineering Data SECTION PAGE DATE A Crane Co. HDPE pipe for sale USA: (937) 778 8947 • Canada: (905) 457 6223 • International: (937) 615 3598 11 90 Table 3 Friction Losses Through Pipe Fittings in Terms of Equivalent Lengths of

## Pipe Roughness Coefficients Table Charts Hazen

A typical uncertainty in the roughness values can be assumed to be in the range ± − 30 50 %. This table lists the roughness Coefficients of Specific roughness, Hazen Williams Coefficient and

pipe size. Each product, whether it is single or dual wall pipe, has its own curve based on its Manning’s “n” value, or roughness coefficient. It is important to consider pipe connections, bends and the

54 ASHRAE JOURNAL . JULY 2017 COUM ENGINEER’S NOTEBOOK Kent W. Peterson, P.E., is chief engineer/COO at P2S Engineering in Long Beach, Calif. He is former chair of Standard 189.1. Kent W. Peterson HDPE Pipe for Corrosion And eak Free

TR 43 2003 Design Service Life of Corrugated HDPE Pipe This document is currently under review TR 44 2006 Comparison of Traditional HDPE Innerduct and "Fabric Conduit" Alternative This document is no longer in publiion and was replaced by TN 59 Comparison of HDPE Conduit and Fabric Divider Installed as Innerduct.

Chapter 6 Design of PE Piping Systems 158 (1 1) (1 2) WHERE PR = Pressure rating, psi HDS = Hydrostatic Design Stress, psi (Table 1 1) A F = Environmental liion Factor (Table 1 2) NOTE: The environmental appliion factors given in Table 1 2

The roughness in the 8” SDR 17 Driscopipe 1000 HDPE pipe is determined by the measurement of head loss in a straight section of pipe during steady flow. This is based on the concept that f=fn(Re,e/D). In this expression, f is the Darcy Weisbach boundary

## Pipe Flow Friction Factor Calculations with Excel

Pipe Flow Friction Factor Calculations with Excel Course No: C03 022 Credit: 3 PDH Harlan H. Bengtson, PhD, P.E. Continuing Eduion and Development, Inc. 9 Greyridge Farm Court Stony Point, NY 10980 P: (877) 322 5800 F: (877) 322 4774 info

Table B.3. Manning''s n Values for Closed Conduits. Description Manning''s n Range Concrete pipe Corrugated metal pipe or pipe arch: Corrugated Metal Pipes and Boxes, Annular or Helical Pipe (Manning''s n varies with barrel size) 68 by 13 mm (2 2/3 x

Pipe Roughness Coefficient: 3.0 10 6 (m) PE, PEH or PVC Pipes Pressure Loss Diagram Nominal Pipe Size: 1/2" Inside Diameter: m ( inches) For full table with Pressure Drops

04 The SABS 533 specifiion has been superceded in part by the adoption of the SABS ISO 4427 of 1996 for HDPE pipe systems. The following table shows which specifiions are currently applicable for LDPE and HDPE pipe systems: Notes: • The HDPE pipe