Errata to ANSI/AWWA D103-09

Standard for

Factory-Coated Bolted Carbon Steel Tanks for Water Storage

(October 2010)

1. Page65,replacethecaptionforFigure17asfollows:

Figure 17 Region-dependent transition period for longer-period ground motion TL (sec), for the conterminous United States

2. Page66,replacethecaptionforFigure17asfollows:

Figure 17 (continued) Region-dependent transition period for longer-period ground motion TL (sec), for the conterminous United States

3. Page67,replacethecaptionforFigure17asfollows:

Figure 17 (continued) Region-dependent transition period for longer-period ground motion TL (sec), for Region 1

4. Page68,replacethecaptionforFigure17asfollows:

Figure 17 (continued) Region-dependent transition period for longer-period ground motion TL (sec), for Alaska

5. Page69,replacethecaptionforFigure17asfollows:

Figure 17 (continued) Region-dependent transition period for longer-period ground motion TL (sec), for Hawaii

2

6. Page70,replacethecaptionforFigure17asfollows:

Figure 17 (continued) Region-dependent transition period for longer-period ground motion TL (sec), for Puerto Rico, Culebra, Vieques, St. Thomas, St. John, St. Croix, Guam, and Tutuila

Also in the middle of the figure itself, delete the words “FIGURE 22-19

LONG-PERIOD TRANSITION PERIOD, TL (SEC), FOR PUERTO RICO, CULEBRA,

VIEQUES, ST. THOMAS, ST. JOHN, AND ST. CROIX.”

7. Page71,replacethefigurewithnewFigure18asfollows:

Spe

ctra

l Res

pons

e A

ccel

erat

ion

(mul

tiple

of 9

)

Period T (sec)

SaM = 1.5 Fa

SaM = 0.6 Fv

T

Figure 18 Deterministic lower limit for maximum considered earthquake ground motion

8. Page86,inthenotationdefinitionsthatfollowEq14-52,replacethedefinitionforTL

asfollows(change“Figure19”to“Figure17”):

TL = region-dependent transition period for longer period ground motion, in seconds, shown in Figure 17

9. Pages93–97,replaceFigure20,BasicWindSpeedV(infiveparts),withnew

Figure20onpages4to8ofthiserrata.

3

10. Page98,inthenotationdefinitionsthatfollowEq15-3,replacethedefinitionforPaw

asfollows(change“Sec.13.1”to“Sec.15.1”):

Paw = average wind pressure acting over H, in pounds per square foot. The average wind pressure shall be based on wind pressures defined in Sec. 15.1

11. Page118,inthefirstparagraphofSec.A.14.3.1,Naturalperiods,change“Sec.A.1.4”

to“Sec.A.2.”

4

Reprinted with permission from ASCE.

Figure 20 Basic Wind Speed V

5

105145

V mph

Values are nominal design 3-second gust wind speeds in miles per hour (m/s) at 33 ft (10 m) above ground for Exposure C category.Linear interpolation between wind contours is permitted.Islands and coastal areas outside the last contour shall use the last wind speed contour of the coastal area.Mountainous terrain, gorges, ocean promontories, and special wind regions shall be examined for unusual wind conditions.

170145125

(47)(65)(76)(65)(56)

LocationHawaiiPuerto RicoGuamVirgin IslandsAmerican Samoa

Notes:1.

2.3.

4.

100(45)110(49)120(54)

130(58)90(40)

Special Wind Region

(m/s)

150(67)

140(63)

140(63)

110(49)

120(54)

90(40)

100(45)

90(40)

130(58)

130(58)

140(63)150(67)140(63)

Reprinted with permission from ASCE.

Figure 20 (continued) Basic Wind Speed V

6

Reprinted with permission from ASCE.

Figure 20 (continued) Basic Wind Speed V, Western Gulf of Mexico hurricane coastline

7

Reprinted with permission from ASCE.

Figure 20 (continued) Basic Wind Speed V, Eastern Gulf of Mexico and Southeastern US hurricane coastline

8

90(4

0)

100(

45)

110(

49) 12

0(54

) Spe

cial

Win

d R

egio

n

Not

es:

1. V

alue

s ar

e no

min

al d

esig

n 3-

seco

nd g

ust w

ind

s

peed

s in

mile

s pe

r ho

ur (

m/s

) at

33

ft (1

0 m

)

abo

ve g

roun

d fo

r E

xpos

ure

C c

ateg

ory.

2.

Lin

ear

Inte

rpol

atio

n be

twee

n w

ind

cont

ours

is

p

erm

itted

. 3.

Isla

nds

and

coas

tal a

reas

out

side

the

last

c

onto

ur s

hall

use

the

last

win

d sp

eed

cont

our

o

f the

coa

stal

are

a.

4. M

ount

aino

us te

rrai

n, g

orge

s, o

cean

p

rom

onto

ries,

and

spe

cial

win

d re

gion

s sh

all

b

e ex

amin

ed fo

r un

usua

l win

d co

nditi

ons.

90(4

0)

Reprinted with permission from ASCE.

Figure 20 (continued) Basic Wind Speed V, Mid- and Northern Atlantic hurricane coastline