SAES-A-112.pdf

Engineering Standard SAES-A-112 SAES-A-112

25 November 2015

Meteorological and Seismic Design Data Document Responsibility: Responsibility: Environmental Environmental Standards Committee Committee

Saudi Aramco DeskTop Standards Table of Contents

1 Scope............................................................. 2 2

Conflicts and Deviations................. Deviations...... ...................... ................ ..... 2

3

References..................................................... 2

4 Definitions....................................................... 3 Appendix I............................ I........................................ ......................... ..................... ........ 9

Previous Issue: 1 October 2013 Next Planned Update: 17 May 2016 Revised paragraphs are indicated in the right margin Primary contact: Alexiou, Ioannis (alexioix alexioix)) on +966-13-8809894 Copyright©Saudi Aramco 2015. All rights reserved.

Page 1 of 27

Document Responsibility: Environmental Standards Committee Issue Date: 25 November 2015 Next Planned Update: 17 May 2016

1

SAES-A-112 Meteorological and Seismic Design Data

Scope This standard defines the basic meteorological and seismic data to be used in the design of all Saudi Aramco facilities. These data are presented in tabular form in Appendix I. I. Note:

Saudi Aramco meteorological standards are based on the best available available data; some locations have longer term data sets than others. As pertinent reference material becomes available, meteorological data for Saudi Aramco installations will be revised and expanded.

This entire standard may be attached to and made a part of purchase orders.

2

3

Conflicts and Deviations 2.1

Any conflicts between this standard and other applicable Saudi Aramco Mandatory Engineering Requirements (MSAERs), or industry standards, codes, and forms shall be resolved in writing by the Co mpany or authorized representative through the Manager, Environmental Protection Department of Saudi Aramco.

2.2

Direct all requests to deviate from this standard in writing to the Company or authorized representative, who shall follow internal Company procedure SAEP-302 and forward such requests to the Man ager, Environmental Protection Department of Saudi Aramco.

References The selection of material and equipment, and the design, construction, maintenance, and repair of equipment and facilities covered by this standard shall comply with the latest edition of the references listed below, unless otherwise noted. 3.1

Saudi Aramco References Saudi Aramco Engineering Procedure SAEP-302

Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco Engineering Requirement

Saudi Aramco Engineering Standards SAES-A-113

Geotechnical Engineering Requirements

SAES-M-005

Design and Constructi Construction on of Fixed Fixed Offshore Offshore Platforms Platforms

Saudi Aramco Engineering Reports SAER-2359

Arabian Gulf Hindcast Study Page 2 of 27



SAER-5307

Outdoor Design Temperatures for HVAC and Heat Exchangers

SAER-5565

Red Sea Hindcast Study

SAER-6089

Final Report on Seismic Acceleration Contour Maps for Saudi Arabia, July 2006

Notes: It provides maximum considered earthquake spectral response accelerations at short and long periods consistent with ICC IBC 2006 (NEHRP 2003). Tabulated acceleration values in this standard were updated and new stations were added in 2007-2008.

3.2

Industry Codes and Standards International Code Council (ICC) ICC IBC 2006

International Building Code

American Society of Civil Engineers ASCE/SEI 7 - 05

4

Minimum Design Loads for Buildings and Other Structures

Definitions This section defines the meteorological and seismic data presented in Tables 1 and 2 Commentary Notes in Section 4 suggest how M eteorological and Seismic Design Data are typically used. 4.1

Station Location and Elevation Station Coordinates: The approximate latitude and longitude of the plant site in the geodetic units of degrees and minutes. Note:

This information can be used in heating, ventilation and air conditioning (HVAC) design to determine the position of the sun at various times of the year.

Site Elevation: Approximate elevations are listed for Saudi Aramco sites and relative to sea level. Note:

4.2

These elevations are used by process, equipment, and utility engineers for calculation of atmospheric pressure. Seasonal site specific atmospheric pressure is also available from the Environmental Protection Department .

Ambient Air and Soil Temperatures: Temperature readings obtained from the Saudi Aramco and PME local weather stations are as follows: Note:

This information in this section can be used in heating, ventilation and air conditioning (HVAC) design - see SAER-5307, as well as other applications

Page 3 of 27



requiring ambient air temperature data.

Average Annual Temperature: An average of the daily temperatures for the year averaged over a number of years. Average Daily Maximum Temperature: An average of the daily temperatures for the hottest month averaged over a number of years. Monthly Normal Maximum Temperature: The average of the maximum daily temperature recorded during the hottest month averaged over a number of years. Average Daily Soil Temperature: The average daily soil temperature for the hottest month, measured one meter below grade, averaged over a number of years. Note:

This value is used for underground buried pipelines.

Monthly Normal Maximum Soil Temperature: The average of the maximum daily soil temperature, measured one meter below grade, during the hottest month averaged over a number of years. Note:

This value is used for underground buried pipelines.

Lowest One Day Mean Temperature: Determined by finding the lowest value of the daily mean temperatures over the entire period of records. Note:

An ambient temperature that may be required for the minimum design metal temperature for equipment that is significantly pressurized at ambient temperatures.

Highest One Day Mean Temperature: Determined by finding the highest value of the daily mean temperatures over the entire period of records. Note:

An ambient temperature that may be required to determine the maximum metal temperatures used in the design of structures, piping systems and certain types of equipment.

Lowest Recorded Temperature: The lowest ambient air temperature that has been recorded at a particular site. Highest Recorded Temperature: The highest ambient air temperature that has been recorded at a particular site. Summer Design Dry Bulb Temperature: A dry bulb temperature that has been equaled or exceeded by 1%, 2.5% or 5% (30 hrs, 73 hrs, or 146 hrs) of the total hours during the months of June through September. Wet Bulb Temperature: The lowest temperature that can be obtained by evaporating water into the air.

Page 4 of 27



Mean Coincident Wet Bulb Temperature: The mean of all wet bulb temperatures occurring at the specific Summer Design Dry Bulb Tempe rature. Summer Design Wet Bulb Temperature: A wet bulb temperature that has been equaled or exceeded by either 1% or 2.5% (30 hrs or 73 hrs) of the total hours during the months of June through September. Mean Coincident Dry Bulb Temperature: The mean of all dry bulb temperatures occurring at the specific summer design wet bulb temperature. Mean Daily Range: The difference between the average daily maximum and average daily minimum temperatures during the month of August. Winter Design Dry Bulb Temperature: A temperature that has been equaled or exceeded by 99% of the total hours during the months of December, January and February.

4.3

Wind

Wind data are compiled from local weather stations where it is measured 10 meters above grade in open terrain and reported as follows: Basic Wind Speed: Basic Wind Speed data are provided in terms of a 3-second gust expressed in SI for 50-year mean recurrence intervals. Note:

This data is used for the design of structures, buildings, pressure vessels, piping, storage tanks, air-cooled heat exchangers, cooling towers, stacks, and similar equipment.

Prevailing Wind Direction: The compass direction (N, NNE, NE, ENE, E, etc.) from which the wind blows the greatest percent of the time. Note:

Since up to 16 points of direction (N, NNE, NE, ENE, E, etc.) may be used to describe the direction from which the wind is blowing, the directions given in Table 1 could represent less than 10% of the total time the wind is blowing. Where wind direction considerations are critical, a wind rose diagram may be available from the Environmental Protection Department.

Exposure Category: An exposure category reflects the characteristic of g round surface irregularities at a particular site. Note:

4.4

This category is used to account for large variations in ground surface roughness that arises from natural topography and vegetation as well as from constructed features. This factor is used in calculating wind pressures using either the ICC IBC 2006 or ASCE/SEI 7 - 05.

Earthquake Data

For more data and details contact the Supervisor of the Civil Engineering Unit Page 5 of 27



of CSD. Short Period Acceleration (S S): The mapped maximum considered earthquake spectral response acceleration at a short period. One-Second Period Acceleration (S 1): The mapped maximum considered earthquake spectral response acceleration at a period of 1-sec. Note:

SS and S1 values have been determined based on SAER-6089. They are to be used as per procedures in ASCE/SEI 7 - 05 and ICC IBC 2006 to calculate the design spectral response acceleration parameters.

Peak Ground Acceleration (PGA) : The peak ground acceleration in Tables 1 and 2 is the peak horizontal acceleration in bedrock associated with an earthquake having a 10 percent probability of exceedance in 50 years (i.e., 475 year average return period). Soil amplification factors (site coefficients) associated with the Site Class must be applied to determine the site (surface) peak horizontal ground acceleration.

The peak ground acceleration is the maximum acceleration experienced by the structure that is attached to the earth during the course of the earthquake motion. Commentary Notes: 1. The PGA is not used for structural analysis/design purposes. 2. Assessment of the potential for soil liquefaction requires consideration of both site peak ground acceleration and earthquake magnitude.

Site Class: A classification assigned to a site based on the types of soils present and their engineering properties as per IBC or ASCE 7 Site Classification Tables 1615.1.1 or 9.4.1.2, respectively.

4.5

Precipitation Note:

The amount of precipitation (rainfall) is a factor used in storage tank design, drainage design, waste-water discharge quality control, and similar items. It should be realized that the desert climate and length of record make recorded values highly variable (for example, Dhahran has 60 years of data while Tanajib has 12 years).

Rainfall, Average Annual: This is the annual average rainfall based on as many years of data as available. Rainfall Maximum in 24 Hours: This is the maximum precipitation recorded in 24 hours. Rainfall Intensity Coefficients: These coefficients are provided for return periods of 5, 10, 25, 50 and 100 years. The coefficients are used in the Steel Page 6 of 27



Formula [I = K/ (t+b)] to calculate the average m aximum precipitation rates for storm durations up to two hour. Where:

I = Rainfall Intensity in mm/hr (in/hr), t = time of concentration in minutes, and K & b are non-dimensional coefficients

Isokeraunic Levels: A rough measure of lightning frequency. Note:

4.6

These values are used in the design of grounding and lightning protection systems.

Ambient Air Quality Note:

Air-borne dust concentrations and contaminant levels are used in mechanical equipment design, when sizing air filters and as a measure of potential dust ingress in bearing housings, lube oil systems, etc.

Dust Concentration: The mass of total suspended airborne particulate matter per unit volume of air. Usual airborne dust concentration is 1 mg/m³. During sandstorms, dust concentrations may reach 500 mg/m³. Particle sizes are as follows:

95% of all particles are less than 20 micrometers 50% of all particles are less than 1.5 micrometers Elements present in dust include compounds of ca lcium, silicon, magnesium, aluminum, potassium, chlorides and sodium. When wetted (high humidity conditions) these compounds function as electrolytes and can result in severe corrosion. Other pollutants present in the atmosphere under the most extreme conditions are: H2S Hydrocarbon

4.7

20 ppm (vol/vol) 150 ppm (vol/vol)

SO2

10 ppm (vol/vol)

CO

100 ppm (vol/vol)

NOx

5 ppm (vol/vol)

O3

1 ppm (vol/vol)

Meteorological and Oceanographic Data for Offshore Structures Offshore Structures: For the design of offshore structures the wind, current and wave design data should be taken from SAER-2359 Arabian Gulf Hindcast Study, and SAER-5565 Red Sea Hindcast Study. Page 7 of 27


17 May 2011 7 December 2011 22 July 2013 1 October 2013 25 November 2015


Revision Summary Major revision. The number of listed sites was increased to 51. Corrected page 10 and page 19 under Berri data the Isokeraunic Levels (days lightning / year ) should be read 25 not 5 as listed. Editorial revision to tables 1 and 2 removing "D" and “E” from all locations and replace with "Note 4" and change the primary contact person. Editorial revision to Table 1 – Design Data for Marjan. Minor revision to further clarify a definition and update two data points. Editorial revision to Table 1 – Design Data for Khurais (Customary Units Rainfall, Average Annual and Maximum in 24 hours). Editorial revision on Peak Ground Acceleration definition, on Table 1 and Note 5 . Editorial revision on Ambient Air Soil Temperatures commentary notes.

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Appendix I Table 1 – Design Data - SI Units Abha

Abqaiq

Abu Sa'fah

Al-Baha

Al-Jauf

Elevation Above Sea Level, m

2200

79

16

1651

559

Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°C):

18°12' 42°29'

25°56' 49°42'

26°54' 50°30'

20°17' 41°38'

29°56' 40°12'

Average Annual Temperature

19

27

26

23

22

Average Daily Maximum Temp. (hottest month)

23

38

33

29

32

Monthly Normal Max. Temp. (hottest month)

30

45

35

34

39

Average Daily Soil Temp. (1 m below grade)

-

32

Note 2

-

-

-

33

Note 2

-

-

7 28

6 42

10 39

4 32

1 39

0

-3

10

0

-5

40 31

52 47

44 37

42 36

49 42

Mean Coincident Wet Bulb Temp. @ 1% Summer Design Dry Bulb Temp. @ 2.5%

13 30

22 45

36

16 35

19 41

Mean Coincident Wet Bulb Temp. @ 2.5%

13

22

-

16

18

Summer Design Wet Bulb Temp. @ 1% Mean Coincident Dry Bulb Temp. @ 1%

20 25

28 36

-

21 31

20 40

Summer Design Wet Bulb Temp. @ 2.5%

19

27

-

20

19

Mean Coincident Dry Bulb Temp. @ 2.5% Summer Design Dry Bulb Temp. @ 5%

24 30

35 45

35

29 34

38 40

12 5

15 6

3 13

10 6

13 0

145 C

155 C

Note 2 Note 2

145 -

165 C

Prevailing Direction Earthquake Data:

SSW

NW

NW

E

W

Short Period Acceleration (SS) in %g

16.9

13.8

14.3

16

12.0

1-Sec Period Acceleration (S1) in %g Peak Ground Acceleration (bedrock) in %g (Note

4.8

4.0

5.2

4.6

3.4

4.00

3.00

3.00

3.00

2.00

Note 4

Note 4

Note 4

Note 4

Note 4

330 131

82 80

-

154 118

59 34

101

Note 3 20

Note 3 25

Note 3 63

Note 3 12

Data Categories

Mo. Normal Max. Soil Temp. (1 m below grade) Lowest One-Day Mean Temperature Highest One-Day Mean Temperature Lowest Recorded Temperature Highest Recorded Temperature Summer Design Dry Bulb Temp. @

1%

Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, km/hr 50 yr Exposure Category (Note 1)

5)

Site Class Precipitation, mm: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year) See notes at the end of the document.

Page 9 of 27



Table 1 – Design Data - SI Units (Continued) Data Categories

Ar'ar'

Berri

Bisha

Dhahran

Duba

539

30

1162

89

19

30°54'

26°57'

19°59'

26°19'

27°19'

41°08'

49°35'

42°37'

50°08'

35°44'


22

26

25

26

26


33

36

32

36

31


40

43

39

42

35


-

32

-

32

-

Mo. Normal Max. Soil Temp. (1 m below grade)

-

32

-

33

-

Lowest One-Day Mean Temperature

-1

8

7

6

16

Highest One-Day Mean Temperature

40

40

37

41

38

Lowest Recorded Temperature

-9

0

-1

-1

5

Highest Recorded Temperature

48

53

43

51

44

Summer Design Dry Bulb Temp. @ 1%

43

44

40

44

-

Mean Coincident Wet Bulb Temp. @ 1%

20

21

18

23

-

Summer Design Dry Bulb Temp. @ 2.5%

42

43

40

43

-


20

21

17

23

-

Summer Design Wet Bulb Temp. @ 1%

23

29

21

30

-

Mean Coincident Dry Bulb Temp. @ 1%

39

34

33

35

-


21

28

20

30

-

Mean Coincident Dry Bulb Temp. @ 2.5%

38

34

33

35

-


41

42

39

42

-

Mean Daily Range

13

12

13

12

6

Winter Design Dry Bulb Temp. @ 99%

0

7

6

7

-

150

145

150

145

145

Exposure Category (Note 1)

C

C

C

C

C

Prevailing Direction

W

N

ENE

NW

WNW


3.4

8.5

7

8.2

27.1

1-Sec Period Acceleration (S1) in %g

1.0

3.1

1.8

2.8

7.9

0.81

2.00

2.8(*)

1.00

6.00

Note 4

Note 4

Note 4

Note 4

Note 4

Rainfall, Average Annual

73

99

91

83

28

Rainfall Maximum in 24 hours

38

96

72

63

116

Note 3

Note 3

Note 3

Note 3

Note 3

15

25

31

21

5

Elevation Above Sea Level, m Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°C):

Wind: Basic Wind Speed, 3-sec gust, km/hr 50 yr

Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, mm:

Rainfall Intensity Isokeraunic Levels (days lightning/year) See notes at the end of the document.

Page 10 of 27



Table 1 – Design Data - SI Units (Continued) East/West Pump Stations Data Categories

No. 3

No. 6

No. 10

Guriat

Hafr Al-Batin

Hail

Haradh

530

771

866

504

414

1001

300

25°10' 47°30'

24°42' 44°58'

24°06' 41°02'

31°25' 37°17'

27°53' 45°33'

27°26' 41°41'

24°04' 49°01'

25 36

25 34

22 34

20 29

25 36

22 33

27 37

43

42

42

38

43

39

45

33 34

32 33

33 34

-

-

-

34 36


5

7

-

0

2

-1

2

Highest One-Day Mean Temperature Lowest Recorded Temperature

38 -2

39 -5

-2

38 -9

41 -5

38 -9

48 -6

Highest Recorded Temperature Summer Design Dry Bulb Temp. @ 1%

47 44

46 43

44 -

47 41

55 45

48 42

50 -


-

-

-

18

20

19

-

43 -

41 -

-

39 18

44 19

41 18

-


-

-

-

22 34

22 39

20 39

-


-

-

-

21

20

19

-


-

-

-

32

41

38

-

14

15

19

38 17

43 13

40 15

21

-

-

-

-1

2

-1

-

145

150

165

160

175

180

145

C

C

C

C

C

C

C

N

SE

W

WNW

N

S

NNE

Short Period Acceleration (SS) in % g

0.9

11.7

18.1

14.3

2.4

13.4

15.9


0.3

3.4

5.2

4.0

0.6

4.3

4.5

Elevation Above Sea Level, m Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°C): Average Annual Temperature Average Daily Maximum Temp. (hottest month) Monthly Normal Max. Temp. (hottest month) Average Daily Soil Temp. (1 m below grade) Mo. Normal Max. Soil Temp. (1 m below grade)

Summer Design Dry Bulb Temp. @ 2.5% Mean Coincident Wet Bulb Temp. @ 2.5%

Summer Design Dry Bulb Temp. @ 5% Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, km/hr 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data:

Peak Ground Acceleration in % g (Note 5) Site Class Precipitation, mm: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year)

(*)

0.21 Note 4

2.00 Note 4

4.00 Note 4

5.7 Note 4

1.0(*) Note 4

3.00 Note 4

3.00 Note 4

-

-

-

47 37

127 65

130 80

40 16

Note 3

Note 3

Note 3

Note 3

Note 3

Note 3

Note 3

18

16

8

11

22

31

16

See notes at the end of the document.

Page 11 of 27




Hawtah


Hofuf

Jeddah

Jizan Ju'aymah Jubail

Khafji

635

160

17

7

5

6

1

22°58' 46°54'

25°30' 49°34'

21°43' 39°11'

16°52' 42°35'

26°47' 49°56'

27°2' 49°32'

28°24' 48°32'

Average Annual Temperature Average Daily Max. Temp. (hottest month)

26 36

27 37

28 33

30 34

25 34

26 36

27 38

Monthly Normal Max. Temp. (hottest month) Average Daily Soil Temp. (1 m below grade)

43 34

45 30

39 -

37 -

41 31

42 33

42 36


35

31

-

-

31

33

36

Lowest One-Day Mean Temperature Highest One-Day Mean Temperature

4 41

5 42

16 37

21 36

8 40

7 40

7 41


-4

-2

9

12

2

3

1

Highest Recorded Temperature Summer Design Dry Bulb Temp. @

49 44

55 47

48 41

48 38

48 42

50 45

47 43

1%

19

24

24

28

28

23

-


43 18

46 24

39 24

38 28

39 24

44 23

42 -

Summer Design Wet Bulb Temp. @ Mean Coincident Dry Bulb Temp. @

1% 1%

21 39

29 39

30 35

30 36

31 36

32 35

-


20

28

29

30

31

31

-


40 42

38 45

35 38

36 37

35 40

35 43

41

Mean Daily Range

14

16

11

7

9

12

9

4

5

15

21

7

7

7

145 C

155 C

135 C

165 C

145 C

145 C

145 C

NNE

NNW

NW

SW

NNW

NNW

NW


0.5

16.0

30.1

43.5

8.9

8.5

7.6


0.1

4.6

11.0

12.4

3.2

3.1

5

3.00

3.00

7.00

10.00

2.00

3.4

3(*)

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

112 50

92 56

57 73

134 90

89 66

120 115

104 60

Note 3 15

Note 3 18

Note 3 9

Note 3 36

Note 3 24

Note 3 25

Note 3 20


Mean Coincident Wet Bulb Temp. @

1%

Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, (km/hr) 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, mm: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year) See notes at the end of the document.

Page 12 of 27



Table 1 – Design Data - SI Units (Continued) Khamis Khurais Makkah Mushayt

Data Categories Elevation Above Sea Level, m

Manifa

Marjan

Medina

2051

430

261

10

21

632

18°18'

25°05'

21°26'

27° 36'

28°27'

24°31'

42°48'

48°08'

39°46'

49° 0'

49°42'

39°35'


20

27

31

26

26

28

Average Daily Max. Temp. (hottest month)

24

38

36

37

34

37


32

42

43

42

39

43


-

34

-

-

-

34


-

35

-

-

-

35


8

-

16

1

10

8


28

-

41

40

39

42


-1

-2

8

0

8

0


40

52

50

50

45

48

32

50

45

44

-

45

15

22

25

-

-

19


31

49

44

43

-

44


15

22

24

-

-

19

Summer Design Wet Bulb Temp. @

1%

20

27

29

-

-

22

Mean Coincident Dry Bulb Temp. @

1%

25

40

39

-

-

38


19

27

28

-

-

21


24

40

38

-

-

39

Summer Design Dry Bulb Temp. @

30

47

43

42

-

43

Mean Daily Range

12

19

12

12

3

13


5

8

16

5

-

9

145

163

135

145

145

120

C

C

C

C

Note 2

C

SSW

N

N

NW

NW

W


19.3

2.8

25

9.1

22.3

25.4


5.5

0.8

9

3.2

8.1

7.2


Summer Design Dry Bulb Temp. @ Mean Coincident Wet Bulb Temp. @

1% 1%

5%

Wind: Basic Wind Speed, 3-sec gust, (km/hr) 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5)

(*)

4.00

0.67

10

2.50

5.00

6.00

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4


220

116

110

104

-

65


100

70

71

60

-

53

-

Note 3

Note 3

Note 3

Note 3

Note 3

77

17

20

20

20

20

Site Class Precipitation, mm:


Page 13 of 27




Najran

Qaisumah

Qasim

Qatif

Rabigh

Rafha


1206

356

645

4

5

444

Station Coordinates: Latitude North

17°36'

28°20'

26°18'

26°30'

22°43'

29°37'

44°25'

46°07'

43°58'

50°00'

39°01'

43°30'


26

25

25

25

28

23


33

37

35

33

33

34


39

44

42

39

38

42


-

-

-

32

-

-


-

-

-

33

-

-


6

2

2

8

17

1


37

42

41

39

39

41


-1

-3

-7

2

11

-6


47

54

49

51

48

49


40

46

45

40

40

45


17

20

19

28

23

21


39

45

44

39

39

44


17

20

19

28

23

21


21

22

22

34

29

24


34

40

41

34

35

42


20

21

20

33

28

23


34

42

41

34

34

41


39

44

43

36

38

42

Mean Daily Range

12

14

15

15

8

15


7

2

2

8

15

0

140

180

150

150

150

155


C

C

C

C

C

C


E

N

N

NNW

WNW

W


25.0

1.1

11.2

8.3

18.8

0.6


7.8

0.3

3.2

2.9

6.7

0.2

5.00

0.27

2.00

1.00

4.00

0.2(*)

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

64

124

152

87

60

93

157

64

86

65

63

121

Note 3

Note 3

Note 3

Note 3

Note 3

Note 3

13

20

21

24

8

13

Longitude East Ambient Air & Soil Temperatures, (°C):

Wind: Basic Wind Speed, 3-sec gust, (km/hr) 50 yr

Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, mm: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year) See notes at the end of the document.

Page 14 of 27



Table 1 – Design Data - SI Units (Continued) Ras Tanura

Riyadh

2

608

2

725

70

294

26°42' 50°05'

24°42' 46°44'

28°00' 48°48'

17°28' 47°6'

22°21' 54°03'

25°36' 49°24'

26

27

25

28

30

27

35

37

34

36

40

37

39 -

43 33

44 29

42 -

45 35

47 33


-

34

30

-

36

34


8 38

5 42

7 39

5 39

10 43

4 41

0

-4

2

0

2

-1


48 41

49 45

47 41

49 43

53 47

49 45


27 40

19 44

26 39

21 42

20 46

21 45


23

19

26

21

21

21


30 35

21 40

31 34

28 40

25 37

26 32


30

20

30

26

23

24


34 39

41 43

34 37

38 42

38 46

33 44

8

14

4

13

12

15

8

5

8

8

10

6

145 C

145 C

145 C

135 C

145 C

155 C

NNW

N

NW

NE

NNE

NNW

8.8

0.7

6.8

5.0

8.1

15.9

3.2 2.00

0.2 0.17

2.5 1.00

1.0 2.0(*)

2.3 1.00

4.5 3.00

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

109 98

116 70

98 51

71 75

24 12

81 80

Note 3

Note 3

Note 3

Note 3

Note 3

Note 3

24

16

20

11

10

20

Data Categories Elevation Above Sea Level, m Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°C): Average Annual Temperature Average Daily Maximum Temp. (hottest month) Monthly Normal Max. Temp. (hottest month) Average Daily Soil Temp. (1 m below grade)


Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, (km/hr) 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data: Short Period Acceleration (SS) in %g 1-Sec Period Acceleration (S1) in %g Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, mm: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year)

Safaniya Sharorah Shaybah Shedgum


Page 15 of 27



Table 1 – Design Data - SI Units (Continued) Data Categories Elevation Above Sea Level, m

Tanajib

Tabuk

Taif

Turaif

Udhailiyah

10

769

1453

852

270

27°52' 48°46'

28°22' 36°35'

21°29' 40°33'

31°41' 38°40'

25°09' 49°20'


25 36

22 31

23 29

19 29

27 37

Monthly Normal Max. Temp. (hottest month) Average Daily Soil Temp. (1 m below grade)

42 29

38 22

35 -

36 -

42 32


30

23

-

-

33


1 40

3 37

6 33

-1 37

6 41


0

-10

0

-8

-1


49 44

45 41

44 37

45 40

49 46


26

19

17

18

22


43 26

40 18

36 17

39 17

45 22


31 34

21 37

22 32

20 34

27 38


30

20

21

19

25


34 42

36 39

31 35

34 37

36 45

Mean Daily Range

12

14

11

15

15

5

1

5

-2

5

145 C

150 C

150 C

155 C

155 C

N

NNW

W

W

NNW


8.1

27.1

16.2

18.6

16


3.0

11.0

4.4

5.3

4.6

4.00

3.00


Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, km/hr 50yr Exposure Category (Note 1) Prevailing Direction Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, mm: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year)

6.5

(*)

6.00

1.00

Note 4

Note 4

Note 4

Note 4

Note 4

104 59

48 48

175 169

83 86

68 24

Note 3 20

Note 3 14

Note 3 89

Note 3 12

Note 3 18


Page 16 of 27



Table 1 – Design Data - SI Units (Continued) Uthmaniyah

Wadi AlDawaser

Wajeh

Yanbu

231 25°13'

622 20°30'

24 26°12'

10 24°07'

49°18'

45°12'

36°29'

38°03'


25

28

25

28


36

37

30

33


47

43

33

39


32

-

-

31

33

-

-

32


6

7

11

12


41

40

35

41


-1

0

1

5


49

49

47

50


46

45

35

44


22

20

25

25


45

44

34

42


22

20

27

25


25

23

30

30


37

41

33

36


24

22

29

30


37

41

32

35


43

43

33

41

Mean Daily Range

16

12

7

12


3

7

12

11

155

145

145

145

C

C

C

C

NNW

ESE

WNW

W


16.0

5.0

27.1

20.4


4.6

1.0

7.0

5.8

Data Categories Elevation Above Sea Level, m Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°C):


Wind: Basic Wind Speed, 3-sec gust, km/hr 50yr Exposure Category (Note 1) Prevailing Direction Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note

(*)

(*)

3.00

2.0

10.8

4.00

Note 4

Note 4

Note 4

Note 4


68

27

26

36


24

28

116

49

Note 3

Note 3

Note 3

Note 3

18

10

5

7

Site Class Precipitation, mm:


Page 17 of 27



Table 2 – Design Data - Customary Units Data Categories Elevation Above Sea Level, ft

Abha

Abqaiq

Abu Sa'fah

Al-Baha

Al-Jauf

7216

259

52

5415

1834

18°12' 42°29'

25°56' 49°42'

26°54' 50°30'

20°17' 41°38'

29°56' 40°12'


66 73

81 100

79 91

73 84

72 90

Monthly Normal Max. Temp. (hottest month) Average Daily Soil Temp. (3 ft below grade)

86 -

113 90

95 -

93 -

102 -

-

91

-

-

-


45 82

43 108

50 102

39 90

34 102


32

27

50

32

23


104 88

126 117

111 99

108 97

120 108


55

72

-

61

66


86 55

113 72

97 -

95 61

106 64


68 77

82 97

-

70 88

68 104


66

81

-

68

66


75 86

95 113

95

84 93

100 104

Mean Daily Range

22

27

5

18

23

41

43

55

43

32

90 C

96 C

Note 2

90 -

103 C

Prevailing Direction Earthquake Data:

SSW

NW

NW

E

W


16.9

13.8

14.3

16.0

12.0

4.8

4.0

5.2

4.6

3.4

4.0

3.0

3.0

3.0

2.0

Note 4

Note 4

Note 4

Note 4

Note 4

13.0 5.2

3.2 3.1

-

6.1 4.6

2.3 1.3

101

Note 3 20

Note 3 25

Note 3 63

Note 3 12

Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°F):

Mo. Normal Max. Soil Temp. (3 ft below grade)

Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, mph 50 yr Exposure Category (Note 1)

1-Sec Period Acceleration (S1) in %g Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year) See notes at the end of the document.

Page 18 of 27



Table 2 – Design Data - Customary Units (Continued) Data Categories

Ar'ar'

Berri

Bisha

Dhahran

Duba

Elevation Above Sea Level, ft

1768

98

3811

292

62

Station Coordinates: Latitude North

30°54'

26°57'

19°59'

26°19'

27°19'

41°08'

49°35'

42°37'

50°08'

35°44'


72

79

77

79

79


91

97

90

97

88


104

109

102

108

95

Average Daily Soil Temp. (3 ft below grade)

-

90

-

90

-

-

90

-

91

-


30

46

45

43

61


104

104

99

106

100


16

32

30

30

41


118

127

109

124

111

109

111

104

111

-

68

70

64

73

-


108

109

104

109

-


68

70

63

73

-

Summer Design Wet Bulb Temp. @

1%

73

84

70

86

-

Mean Coincident Dry Bulb Temp. @

1%

102

93

91

95

-


70

82

68

86

-


100

93

91

95

-

Summer Design Dry Bulb Temp. @

106

108

102

108

-

Mean Daily Range

23

22

23

22

11


32

45

43

45

-

Basic Wind Speed, 3-sec gust, mph 50 yr

93

90

93

90

90


C

C

C

C

C


W

N

ENE

NW

WNW


3.4

8.5

7.0

8.2

27.1


1.0

3.1

1.8

2.8

7.9

0.8

2.0

2.8(*)

1.0

6.0

Note 4

Note 4

Note 4

Note 4

Note 4


2.9

3.9

3.6

3.3

1.1


1.5

3.8

2.8

2.5

4.6

Note 3

Note 3

Note 3

Note 3

Note 3

15

25

31

21

5

Longitude East Ambient Air & Soil Temperatures, (°F):


Summer Design Dry Bulb Temp. @ Mean Coincident Wet Bulb Temp. @

1% 1%

5%

Wind:

Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches:


Page 19 of 27



Table 2 – Design Data - Customary Units (Continued) East/West Pump Stations Data Categories

No. 3

No. 6

No. 10

Guriat

Hafr Al-Batin

Hail

Haradh

Elevation Above Sea Level, ft Station Coordinates: Latitude North

1738 25°10'

2529 24°42'

2840 24°06'

1653 31°25'

1358 27°53'

3283 27°26'

984 24°04'

Longitude East Ambient Air & Soil Temperatures, (°F):

47°30'

44°58'

41°02'

37°17'

45°33'

41°41'

49°01'


77

77

72

68

77

72

81


97

93

93

84

97

91

99


109

108

108

100

109

102

113


91

90

91

-

-

-

93

Mo. Normal Max. Soil Temp. (3 ft below grade) Lowest One-Day Mean Temperature

93 41

91 45

93 -

32

36

30

97 36


100

102

-

100

106

100

118

Lowest Recorded Temperature Highest Recorded Temperature

28 117

23 115

28 111

16 117

23 131

16 118

21 122

Summer Design Dry Bulb Temp. @ 1% Mean Coincident Wet Bulb Temp. @ 1%

111 -

109 -

-

106 64

-

108 66

-


109

106

-

102

-

106

-

Mean Coincident Wet Bulb Temp. @ 2.5% Summer Design Wet Bulb Temp. @ 1%

-

-

-

64 72

-

64 68

-


-

-

-

93

-

102

-


-

-

-

70

-

66

-


-

-

-

90

-

100

-

25

27

34

100 31

23

104 27

38

-

-

-

30

-

30

-

Basic Wind Speed, 3-sec gust, mph) 50 yr

90

93

103

99

109

112

90


C

C

C

C

C

C

C

N

SE

W

WNW

N

S

NNE

0.9 0.3

11.7 3.4

18.1 5.2

14.3 4.0

2.4 0.6

13.4 4.3

15.9 4.5

0.2

2.0

4.0

5.7(*)

1.0(*)

3.0

3.0

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

-

-

-

1.9

5.0

5.1

1.6

Note 3

Note 3

Note 3

1.5 Note 3

2.6 Note 3

3.1 Note 3

0.6 Note 3

18

16

8

11

22

31

16

Summer Design Dry Bulb Temp. @ 5% Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind:

Prevailing Direction Earthquake Data: Short Period Acceleration (SS) in %g 1-Sec Period Acceleration (S1) in %g Site Class Precipitation, inches: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year) See notes at the end of the document.

Page 20 of 27



Table 2 – Design Data – Customary Units (Continued) Hawtah

Hofuf

Jeddah

Jizan

Ju’aymah

Jubail

Khafji

2083

525

56

23

16

20

3

22°58’ 46°54’

25°30’ 49°34’

21°43’ 39°11’

16°52’ 42°35’

26°47’ 49°56’

27°2’ 49°32’

28°24’ 48°32’


79

81

82

86

77

79

81


97

99

91

93

93

97

100


109

113

102

99

106

108

108


93

86

-

-

88

91

97


95

88

-

-

88

91

97


39 106

41 108

61 99

70 97

46 104

45 104

45 106

25

28

48

54

36

37

34


120 111

131 117

118 106

118 100

118 108

122 113

117 109


66 109

75 115

75 102

82 100

82 102

73 111

108


64

75

75

82

75

73

-


70 102

84 102

86 95

86 97

88 97

90 95

-


68

82

84

86

88

88

-


104

100

95

97

95

95

-


108

113

100

99

104

109

106

25 39

29 41

20 59

13 70

16 45

22 45

16 45

90 C

96 C

84 C

103 C

90 C

90 C

90 C

NNE

NNW

NW

SW

NNW

NNW

NW

0.5

16.0

30.1

43.5

8.9

8.5

7.6

0.1

4.6

11.0

12.4

3.2

3.1

5.0

3.0

3.0

7.0

10.0

2.0

3.4

3(*)

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4

Data Categories Elevation Above Sea Level, ft Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°F):


Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, mph 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data: Short Period Acceleration (SS) in %g 1-Sec Period Acceleration (S1) in %g Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches: Rainfall, Average Annual

4.4

3.6

2.2

5.3

3.5

4.7

4.1


2.0

2.2

2.9

3.5

2.6

4.5

2.3

Note 3 15

Note 3 18

Note 3 9

Note 3 36

Note 3 24

Note 3 25

Note 3 20


Page 21 of 27



Table 2 – Design Data – Customary Units (Continued) Data Categories Elevation Above Sea Level, ft

Khamis Khurais Mushayt

Makkah

Manifa

Marjan

Medina

6727

1410

856

33

69

2073

18°18’ 42°48’

25°05’ 48°08’

21°26’ 39°46’

27° 36’ 49° 0’

28°27’ 49°42’

24°31’ 39°35’


68

81

88

79

79

82


75

100

97

99

93

99


90

108

109

108

102

109


-

93

-

-

-

93

-

95

-

-

-

95


46 82

-

61 106

34 104

50 102

46 108


30

28

46

32

46

32


104 90

126 122

122 113

122 111

113 -

118 113


59 88

72 120

77 111

109

-

66 111


59

72

75

-

-

66


68 77

81 104

84 102

-

-

72 100


66

81

82

-

-

70


75

104

100

-

-

102


86

117

109

108

-

109

22 41

34 46

22 61

22 41

5 -

23 48

90 C

101 C

84 C

90 C

90 Note 2

75 C

SSW

N

N

NW

NW

W

19.3

2.8

25.0

9.1

22.3

25.4

5.5

0.8

9.0

3.2

8.1

7.2

4.0

0.7

10(*)

2.5

5.0

6.0

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4



Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, mph 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data: Short Period Acceleration (SS) in %g 1-Sec Period Acceleration (S1) in %g Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches: Rainfall, Average Annual

8.7

4.6

4.3

4.1

-

2.6


3.9

2.75

2.8

2.4

-

2.1

77

Note 3 17

Note 3 20

Note 3 20

Note 3 20

Note 3 20


Page 22 of 27



Table 2 – Design Data – Customary Units (Continued) Data Categories

Najran

Qaisumah

Qasim

Qatif

Rabigh

Rafha

3956

1168

2116

13

16

1456

17°36’

28°20’

26°18’

26°30’

22°43’

29°37’

44°25’

46°07’

43°58’

50°00’

39°01’

43°30’


79

77

77

77

82

73


91

99

95

91

91

93


102

111

108

102

100

108


-

-

-

90

-

-

-

-

-

91

-

-


43

36

36

46

63

34


99

108

106

102

102

106


30

27

19

36

52

21


117

129

120

124

118

120


104

115

113

104

104

113


63

68

66

82

73

70


102

113

111

102

102

111


63

68

66

82

73

70


70

72

72

93

84

75


93

104

106

93

95

108


68

70

68

91

82

73


93

108

106

93

93

106


102

111

109

97

100

108

Mean Daily Range

22

25

27

27

14

27


45

36

36

46

59

32

Basic Wind Speed, 3-sec gust, mph

87

112

93

93

93

96


C

C

C

C

C

C


E

N

N

NNW

WNW

W


25.0

1.1

11.2

8.3

18.8

0.6


7.8

0.3

3.2

2.9

6.7

0.2

5.0

0.3

2.0

1.0

4.0

0.2(*)

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4


2.5

4.9

6.0

3.4

2.4

3.7


6.2

2.5

3.4

2.6

2.5

4.8

Note 3

Note 3

Note 3

Note 3

Note 3

Note 3

13

20

21

24

8

13

Elevation Above Sea Level, ft Station Coordinates: Latitude North Longitude East Ambient Air & Soil Temperatures, (°F):


Wind:

Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches:


Page 23 of 27



Table 2 – Design Data – Customary Units (Continued) Ras Tanura

Riyadh

7

1994

7

2378

230

964

26°42’ 50°05’

24°42’ 46°44’

28°00’ 48°48’

17°28’ 47°6’

22°21’ 54°03’

25°36’ 49°24’


79

81

77

82

86

81


95

99

93

97

104

99


102

109

111

108

113

117


-

91

84

-

95

91

-

93

86

-

97

93

46 100

41 108

45 102

41 102

50 109

39 106

32

25

36

32

36

30


118 106

120 113

117 106

120 109

127 117

120 113


81 104

66 111

79 102

70 108

68 115

70 113


73

66

79

70

70

70


86 95

70 104

88 93

82 104

77 99

79 90


86

68

86

79

73

75


93

106

93

100

100

91


102

109

99

108

115

111

Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind:

14 46

25 41

7 46

23 46

22 50

27 43

90 C

90 C

90 C

84 C

90 C

96 C

NNW

N

NW

NE

NNE

NNW

8.8

0.7

6.8

5.0

8.1

15.9

3.2

0.2

2.5

1.0

2.3

4.5

2.0

0.2

1.0

2.0(*)

1.0

3.0

Note 4

Note 4

Note 4

Note 4

Note 4

Note 4


Mo. Normal Max. Soil Temp. (3 ft below grade) Lowest One-Day Mean Temperature Highest One-Day Mean Temperature Lowest Recorded Temperature

Basic Wind Speed, 3-sec gust, mph 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data: Short Period Acceleration (SS) in %g 1-Sec Period Acceleration (S1) in %g Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches:

Safaniya Sharorah Shaybah Shedgum


4.3

4.6

3.9

2.8

0.9

3.2


3.9

2.8

2.0

3.0

0.5

3.1

Note 3 24

Note 3 16

Note 3 20

Note 3 11

Note 3 10

Note 3 20


Page 24 of 27



Table 2 – Design Data – Customary Units (Continued) Data Categories Elevation Above Sea Level, ft

Tanajib

Tabuk

Taif

Turaif

Udhailiyah

33

2522

4766

2795

886

27°52’ 48°46’

28°22’ 36°35’

21°29’ 40°33’

31°41’ 38°40’

25°09’ 49°20’


77 97

72 88

73 84

66 84

81 99

Monthly Normal Max. Temp. (hottest month) Average Daily Soil Temp. (3 ft below grade)

108 84

100 72

95 -

97 -

108 90


86

73

-

-

91


34 104

37 99

43 91

30 99

43 106


32

14

32

18

30


120 111

113 106

111 99

113 104

120 115


79

66

63

64

72


109 79

104 64

97 63

102 63

113 72


88 93

70 99

72 90

68 93

81 100


86

68

70

66

77


93 108

97 102

88 95

93 99

97 113

22

25

20

27

27

41

34

41

28

41

90 C

93 C

93 C

96 C

96 C

NW

NNW

W

W

NNW


8.1

27.1

16.2

18.6

16.0


3.0

11.0

4.4

5.3

4.6

6.0

1.0

6.5(*)

4.0

3.0

Note 4

Note 4

Note 4

Note 4

Note 4

4.1 2.3

1.9 1.9

6.9 6.7

3.3 3.4

2.7 0.9

Note 3 20

Note 3 14

Note 3 89

Note 3 12

Note 3 18


Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, mph 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data:

Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches: Rainfall, Average Annual Rainfall Maximum in 24 hours Rainfall Intensity Isokeraunic Levels (days lightning/year) See notes at the end of the document.

Page 25 of 27



Table 2 – Design Data – Customary Units (Continued) Uthmaniyah

Wadi Al-Dawaser

Wajeh

Yanbu

758

2040

79

33

25°13’ 49°18’

20°30’ 45°12’

26°12’ 36°29’

24°07’ 38°03’


77

82

77

82


97

99

86

91


117

109

91

102


90

-

-

88


91

-

-

90


43 106

45 104

52 95

54 106

30

32

34

41


120 115

120 113

117 95

122 111


72 113

68 111

77 93

77 108


72

68

81

77


77 99

73 106

86 91

86 97


75

72

84

86


99

106

90

95

109

109

91

106

29 37

22 45

13 54

22 52

96 C

90 C

90 C

90 C

NNW

ESE

WNW

W

16.0

5.0

27.1

20.4

4.6

1.0

7.0

5.8

3.0

2.0(*)

10.8(*)

4.0

Note 4

Note 4

Note 4

Note 4



Summer Design Dry Bulb Temp. @ 5% Mean Daily Range Winter Design Dry Bulb Temp. @ 99% Wind: Basic Wind Speed, 3-sec gust, mph 50 yr Exposure Category (Note 1) Prevailing Direction Earthquake Data: Short Period Acceleration (SS) in %g 1-Sec Period Acceleration (S1) in %g Peak Ground Acceleration (bedrock) in %g (Note 5) Site Class Precipitation, inches: Rainfall, Average Annual

2.7

1.1

1.0

1.4


0.9

1.1

4.6

1.9

Note 3 18

Note 3 10

Note 3 5

Note 3 7

Rainfall Intensity Isokeraunic Levels (da ys lightning/year) See notes at the end of the document.

Page 26 of 27



1

Exposure D shall be used within 0.46 km (.2 mi) of the shoreline

2

Offshore station – apply SAES-M-005

3

Rainfall intensity – I

I =

K (t +b) K

Freq.

4

b

SI units

Customary units

5 yr

2443

96.2

27.5

10 yr

2941

115.8

24.9

25 yr

3420

134.6

23.7

50 yr

3810

150.0

21.0

100 yr

4300

169.3

20.0

Site Class D is to be used for preliminary structural analyses only when geotechnical data is not available. Site-and-structure specific geotechnical investigations are to be performed for all Saudi Aramco and Saudi Aramco-managed projects as per SAES-A-113. The design Site Class shall be determined based on the geotechnical investigation data using the methodology specified in ASCE-7.

*

Minimum value for sites without many years of recorded data

NA

Not applicable

-

Data not available on document issue date

5

Site-specific seismic studies to determine the site PGA, if available and approved by CSD, shall be used in lieu of the values in Tables 1 and 2.

Page 27 of 27

SAES-A-112.pdf

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