Descripción: Tutorial de Underground Design en Vulcan 10.
Concrete Pipe Design ManualFull description
Descripción: Concrete Pipe Design Manual
Pipe design tutorial
Full description
Underground Tanks Design Look-out design
Pipe Culvert design
Pipe hanger design
Descripción: Manual de diseño de soportes
steelFull description
piping
Fiberglass Pipe Design
Pipe hanger designDescripción completa
UNCASED DESIGN - Highway Crossing Pipeline (Ref : API RP 1102 - Steel Pipeline Crossing Railroads and Highways) Step - a - Intial Design Information Pipe and Operational Characterists : Outside Dia Operating pressure Steel Grade Specified Min yield Strength Design factor Longitudinal joint factor Installation Tempreture Max. or Min. operating Temp. Temp. derating factor W all Thickness
D p
24 300 X52 52000 0.72 1 N/A N/A N/A 0.375
SMYS F E T1 T2 T tw
inch psig p si
in
Installation & site Characterists : Depth Bored Dia. Soil type Modulus of soil reaction Resilient Modulus Unit W eight Type of longitudinal weld Design wheel load - Signle Axle Design wheel load - tandem Axle Pavement Type
H Bd E' Er uw Ps Pt
3.28 28 Loose Sand 0.5 10 120 ERW 12 10 Flexible
ft in k si k si lb/ft3 kips kips
Other pipe steel properties : Young's modulus Poisson's ratio Coefficient of thermal expansion
Es vs at
30000 0.3 6.50E-06
300 24 0.375 0.72 1 0 52000
psig in in
ks i per deg F
Step - b - Check Allowable Barlow Stress Equation 8b with :
p D tw F E T SMYS
<
SHi (Barlow)
Shi (Barlow)= pxD/(2tw)
9600 psi
For Natural Gas: FxExTxSMYS = For liquid & other products: FxExSMYS =
p si
FxExSMYS
OK Step - c - Circumferential Stress Due to Earth Load c.1 Figure 3 with :
tw / D E'
c.2 Figure 4 with :
H / Bd Soil Soil Type Type
c.3 Figure 5 with :
Bd / D
c.4 Equation 1 with :
D uw
0.0156 0.5 ksi
KHe
3250
1.4057143 Loos Loose e San Sand d
Be
0.4
1.167
Ee
1.08
24 in 120 lb/ft3 0.0694444 lb/in3
SHe = Khe x Be x Ee x uw x D 2340 psi
Step - d - Impact Factor, Fi, and and Applied Design Surface Pressure, w d.1 Figure 7 for highway with : d.2 Applied Design Design Surface Pressure, w Section 4.7.2.2.1 :
H
Flexible
3.28
Fi
Pt w
1.5
12 kips 83.3 psi
0 3744 37440 0 psi psi
Step - e - Cyclic Stresses, DSHh & DSLh e.1 Cyclic circumferential stress DSHh e.1.1 Figure 14 with :
e.1.2 Figure 15 with :
e.1.3 Table 2 with : Flexible Pavement Tandem Axles
tw / D Er
0.015625 10 ksi
e.2.2 Figure 17 with :
e.2.3 Table 2 with : Flexible Pavement Tandem Axles
13
1.15
D H
24 in 3.28 ft
GHh
H D
3.28 ft 24 in
R L
1 1
DSHh = KHh x GHh x R x L x Fi x w 1868.0025 psi
e.1.4 Equation 5 with :
e.2 Cyclic Longitudinal stress DSLh e.2.1 Figure 16 with :
KHh
tw / D Er
0.015625 10 ksi
KLh
10
D H
24 in 3.28 ft
GLh
1
H D
3.28 ft 24 in
R L
1 1
DSLh = KLh x GLh x R x L x Fi x w 1249.5 psi
e.2.4 Equation 6 with :
Step - f - Cercumferential Stress Due to Internal Pressurization, Shi Equation 7 with :
p D tw
300 psi 24 in 0.375 in
SHi = p x (D-tw) / (2 x tw) 9450.000 psi
Step - g - Principal Stresses S1 , S2 , S3 Es at T1 T2 vs
30000 6.50E-06 0 0 0.3
g.1 Equation 9 with :
SHe DSHh SHi
2340 psi 1868.0025 psi 9450.000 psi
g.2 Equation 10 with :
DSLh SHe SHi
1249.5 psi 2340 psi 9450.000 psi
g.3 Equation 11 with :
p
g.4 Effictive Stress, Seff Equation 12 with :
S1 S2 S3 S1 - S2 S2 - S3 S3 - S1
g.5 Check allowable effective Stress Equation 13 with :