ORIGINATOR:
ORIGINATOR DOC No.:
ADCO DOC No.:
1
10/8/2012
A
REV.
LTWp-JAD1113-XXX-CIV-CAL-XXX-A
CONTRACT NO.:
11-01-83-0602
7359.03
PROJECT NO.:
P11542
DATE:
PAGE
CONTRACT No. 7359.03 (GES)
TASK ORDER No. 92221147
DESIGN CALCULATION OF PIPE SUPPORTS
FOR
PRODUCED WATER RE-INJECTION UPGRADE
AT BAB CL-5, CL-15 & CL-16
THIS DOCUMENT IS INTENDED FOR USE BY ADCO AND IT'S NOMINATED
CONSULTANTS, CONTRACTORS, MANUFACTURERS AND SUPPLIERS
ENGINEERING SERVICES FOR
MISCELLANEOUS PMRFs, BAB BATCH-4
15
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REVISION RECORD
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ENGG. SERVICES FOR MISCELLANEOUS PMRFs BAB BATCH-4
DESIGN CALCULATION OF PIPE SUPPORTS
11-01-83-0602
10/8/2012
DOC. TITLE:
PROJECT NO:
P11542
REV.
CONTRACT NO.:
7359.03
10.08.2012
PROJECT:
ADCO DOCUMENT NO.
DESCRIPTION
SBU
VBE
AEN
ORIGINATOR
REVIEWED
APPROVED
Pages
1.0 INTRODUCTION………..………...……… 4
2.0 SCOPE……..……….……...………..4
3.0
REFERENCE CODES & STANDARDS………..
4
4.0
REFERENCE DRAWINGS………..
4
5.0
MATERIAL DATA ………..
4
6.0
SOIL DATA ………….………...………..
5
7.0
DESIGN LOADS FOR PIPE SUPPORTS ……….………..
5
8.0
BASIC LOAD CASES AND LOAD COMBINATIONS………..
7
9.0
STEEL STRUCTURE ANALYSIS & DESIGN ……….
8
10.0
PIPE SUPPORT FOUNDATIONS ……….………..
10
11.0
RESULT ……….……….
10
APPENDIX - I
DRAWINGS (8 sheets)
APPENDIX - II
PIPING INPUT (10 sheets) + ASSUMPTIONS (6 sheets)
APPENDIX - III
STRUCTURAL STEEL STAAD OUTPUT (23 sheets)
APPENDIX - IV
BASE PLATE DESIGN (5 Sheets)
APPENDIX - V
FOUNDATION DESIGN (133 Sheets)
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Table of Contents
10/8/2012
DESIGN CALCULATION OF PIPE SUPPORTS
ENGG. SERVICES FOR MISCELLANEOUS PMRFs BAB BATCH-4
PROJECT:
ADCO DOCUMENT NO.
DOC. TITLE:
11-01-83-0602
1.0
INTRODUCTION
2.0
SCOPE
There are 4 types of pipe supports:
- "T" post type steel supports (PS-02 & PS-03) connected with tie-beams and horizontal bracings
3.0
REFERENCE CODES & STANDARDS
BS 8110: 1997 Part-1
-ASCE/SEI 7-05
-BS 5950
-
Structural Use of Steelwork in Building
UBC 1997
-
Uniform Building Code
-34.19.20.31
-
Reinforced Concrete Structures
4.0
REFERENCE DRAWINGS
P11542-11-01-76-0602
-
Pipe Supports
11-01-79-1706 rev. 3
-
GA Civil Section V BCDS Area (NPCC Drawing Project no. P11500)
11-01-76-2630 rev. 2 (sht.3/6)
-11-20-79-0215
-
GA Civil Pipe Support Foundation - WSW Cluster 16
5.0
MATERIAL DATA
a.
Grade of structural steel BS En 10025: Yield strenght
=
250
N/mm
2b.
Grade of blinding concrete
=
20
N/mm
2c.
Grade of reinforced concrete
=
40
N/mm
2d.
Unit weight of concrete, γ
c=
24
KN/m
3
e.
Grade of reinforcement (BS 4449), f
y=
460
N/mm
2PAGE
4
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A
DATE:
7359.03
P11542
PROJECT:
ENGG. SERVICES FOR MISCELLANEOUS PMRFs BAB BATCH-4
ADCO DOCUMENT NO.
DOC. TITLE:
DESIGN CALCULATION OF PIPE SUPPORTS
11-01-83-0602
CONTRACT NO.:
PROJECT NO:- "T" post type steel supports (PS-04).
- Cantilever on existing structure (PS-01)
Structural Design Basis
30.99.75.0067
Company specifications
Layout for paving and pipe supports - Water treatment area BCDS
(NPCC Drawing Project no. P11500)
- PS-33, PS-34, PS-35 - all in Cluster (5, 15, 16) Area.
Minimum Design Loads for Buildings and Other Structures
REV.
The Bab field is located in a desert area approximately 160 km southwest of Abu Dhabi city. The field covers an
area of approximately 45 km by 25 km. The main processing facilities are located around Habshan.
The scope of this calculation note is to design the Pipe support structures & foundations as per piping
requirements.
Oil production from Bab field started in the 1960s. Bab field facilities were built in two phases. Phase-1 was
commissioned in 1993 and included five processing trains, namely Trains 1 to 5, in the Central Degassing
Station (CDS). Phase-1 also included five remote degassing stations, RDS-1, 2, 3, 4, and 5. Phase-2 which
included trains 6 and 7 in the CDS and one remote degassing station, RDS-6 was commissioned in 2004.
Structural Use Of Concrete (Code of practice for design &
construction)
The field is sour, with wells to the northeast exhibiting generally higher H2S content than wells to the southwest.
For the purposes of maintaining continuous improvement for the existing Bab facilities, ADCO Intended carrying
plant modifications as part of Batch-IV to improve the operability and safety of the existing facilities.
- Concrete supports with embedded steel plates and supporting steel beams on top:
- PS-05, PS-06, PS-07, PS-08, PS-09, PS-10, PS-29, PS-30, PS-31 & PS-32 - all in BAB CDS Area
6.0
SOIL DATA
a.
Net allowable Bearing Pressure
=
150
KN/m
2b.
Unit weight of soil (γs
1)
=
18
KN/m
3c.
Water Table level
=
N/A
d.
Modulus of Subgrade Reaction (ks = 3 kg/cm
3)
=
29421 kN/m
3e.
Co-efficient of friction between concrete and soil
=
0.30
f.
Co-efficient of friction between concrete and polythene sheet
=
0.30
7.0
DESIGN LOADS FOR PIPE SUPPORTS
7.1
DEAD LOADS (DL)
For the pipe supports, the selfweight of the members are included in the structural analysis
using STAAD Pro.
7.2
PIPING LOADS
Refer Appendix II for Piping Input.
7.3
WIND LOADS
Wind Loads in X and Z directions are considered for the analysis of pipe supports as follows:
Wind loads are calculated based on ASCE/SEI 7-05.
Wind load is calculated across the direction of Piping.
Basic wind speed
Vb
=
44.7
m/s
Importance factor
I
=
1.15
Exposure category
=
C
Wind Directionality Factor, Kd (Table 6-4 of ASCE 7-05)
=
0.85
Topographic Factor, Kzt (Structural design criteria)
=
1
Velocity pressure
qz=0.613*Kz*Kzt*Kd*V
2*I
(N/m
2)
G - Gust effect factor for all structural members
=
0.85
Cf - for circular members, Diam. > 50mm
=
0.80
Cf - for Flat sided members
=
2
Cs - Shielling coefficient
=
1.0
(shielding effect neglected)
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0.9
1.018
PROJECT:
ENGG. SERVICES FOR MISCELLANEOUS PMRFs BAB BATCH-4
ADCO DOCUMENT NO.
DOC. TITLE:
7359.03
PROJECT NO:P11542
DESIGN CALCULATION OF PIPE SUPPORTS
11-01-83-0602
(kN/m
2)
CONTRACT NO.:
0-4.6
Kz
REV.
Velocity Pressure
(m)
6.1
1.078
Height above
G.L.
Exposure
0.85
Soil parameters according to Geo-technical investigation for EPC for BAB THAMAMA G & HABSHAN 2,
1.8/MMBOPD PHASE-I DEVELOPMENT ADCO PROJECT No. P11500,
(a) Wind force on Structual Members
F=(qz*G*Cf*Cs)*Af
kN
where Af = Projected Area (m
2)
F=(1.078 * 0.85 * 2 * 1) * Af
F=
1.8326
*Af
(b) Wind force on Pipes
F=(qz*G*Cf*Cs)*D
kN/m
where D = Average Diameter of Pipe (m)
F=(1.078 * 0.85 * 0.8 * 1) * D
D [m]
D[in]
0.273
10.00
0.350
14.00
7.4
SEISMIC LOAD CALCULATION:
Seismic loads are calculated based on UBC 1997
Time period
Ta = Ct*(hn)^0.75
Ct =
0.085
hn =
4.82 m
Ta=
0.277
Design base shear
As per clause 1630.2.1, the total design base shear need not exceed the following:
V = (2.5 * Ca * I / R) * W
, where:
Ca – seismic coefficient, as set forth in Table 16-Q
Ca=
0.12
(considering Z = seismic zone '1', factor = 0.075, soil profile type: Sd = stiff soil profile)
I = importance factor given in table 16-K
I=
1.25
Rx=
2.2
Rz=
2.2
W= Total dead load as per Clause 1630.1.1 of UBC-97
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0.201
0.257
UC254x254x89
F [kn/m]
0.263
0.263
PS-02 & PS-03
PS-01
0.251
0.48
UBC load generation is capable to calculate the natural period of vibration, base shear and distribute the lateral
forces for each level automatically.
PROJECT NO: