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Errata - Design of Reinforced Concrete, 8th Ed., McCormac and Brown

1.  answer to Problem 8.9 is ,11 lb.

!.  answer to Problem 9.1" is# $%ne ans. !& in. b' & in. col(mn with 9

10 )11 bars* change 9 )11 bars to 1& )11 bars

+.  p. 154, fig. (g) L3 should be L2

.  p. 326, step 1, remove kl/r  at the very end.

5. p. 32, step 12, !hange λ to γ 

6. p. 324, in the last e"uation for δ, the term # 1.$ should align %ith δ. &t should not be in

the denominator.

. p. 33$, 4th e"n., !hange 89.6 to 32, !hange 219.8 to to 141.2 ft'.

nder *sele!ting reinfor!ement, !hange e + (12)(141.2)542 + 3.13 in.

-hange  n + ($.643)(3.13)1/ + 0.111

0n net line, !hange ρ + 0.010

last line before e!tion 11.11, !hange  to s and (0.010)(1/)(1/) + 3.24 in2

!hange / bars to 6 #7 bars.

/. p. 332, under item (2), *7a lu4 to be a8888.9 should be *7a lur to bea8888. *

. p. 335, item (!), !hange :! + /$1.5 + 4$$ to :! + /$1.52 + 2$5 . 0n the net line,

in the e"uation for d, !hange 4$$ to 2$5 and !hange 1.$5 to 1.$6. -hange step (d) to Mc $1.&* $+"."* $1.&9*$/.8* 119./ft-0. hen in ste2 $*, change3oading 444 from 11.1 to 119./ ft-0.

1&. Problem 1&.1+, change answer from 199 0i2s to +& 0i2s

11. :roblem 1$.24, add to the problem statement, *se 6 bars, three in ea!h fa!e.9

12. ans%er to :roblem 11.3 should be ($.4, $.$)

13. ans%er to :rob. 11.5 is δ + 1.15, 6 bars

14. &n the :roblem statements for :roblem 11./ to 11.12 and 11.14 to 11.1, !hange -&

;"uation 1$'12 to -& ;"uation 1$'15. 7ae the same !hange in the problem statementfor :roblem 11..

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15. &n the problem statement for :roblem 11.13, !hange -& ;"uation 1$'11 to -& ;"uation

1$'14.

16. :roblem 11.14, !hange M 1ns from $ to /$ and M 2ns from /$ to $.

1. ans%er to :rob. 11.13 is δ + 1./, / 14 bars

1/. ans%er to :rob. 11.15 is 6 11 bars

1. ans%er to :rob. 11.23 is 6 32 bars

2$. ans%er to :roblem 12.13 should be (ans< 4 6, 14 in. into footing, 13.5 in. into !olumn)

21. ans%er to :roblem 12.15 should be (ans< ft. $ in. 11 ft. / in footing, 24 in. deep, / /in long dire!tion)

22. ans%er to :roblem 1/.5 should be (ns /'in. %all %ith bars = 5 in., 2 layers)

22. ans%er to :roblem 1/. should be (ns 12'in. %all %ith bars = 3 in., one layer)

23. ans%er tp :roblem 21.1 (lateral for!es< roof, 3.2, 6th level, 13/./>5th level, 11$.6> 4th level, /2./> 3rd level, 55.4> 2nd level, 2/.6)

24. ans%er to :roblem 21.3 (7n + 2$ ft', ?u + 45)

25. :age t%o pla!es @ repla!e *3 years9 %ith *three years9

26. :age 11 @ mae the paragraph beginning *everal !ommnts . . .9 a !ontinuation of the

 previous paragraph to eliminate the one'senten!e paragraph.

27. :age 14 @ first line of tet @ repla!e *mied together9 %ith *mied9. se of the %ord*together9 is redundant.

28. :age 23 @ line 1 @ $.$4 in should be $.$4 in2.

29. :age 23 ' line 26 @ $.32 should be $.16

30. Aable 1.1 @ :age 26 @ the area listed for a Bo 11 bar should be 1.56 instead of 1.41

31. :age 44/4 @ ;ample 2.62. @ in the symbol for !on!rete strength, the *sub !9 is not

aligned dire!tly belo% the prime. Ahis o!!urs on!e on page 4, three times on page 4/,and on!e of page 4.

32. :age 6 @ ;ample 3.1, first e"uation @ in the *sub !9, the - is upper !ase. &t should be

lo%er !ase.

33. :age // @ se!ond line belo% the last e"uation @ repla!e *plotted9 %ith *listed9

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34. :age 1$3 @ table at bottom of page @ repla!e in the table headings f  y(  φ) and f’ c(  φ) %ith

 f  y (psi) and f’ c(psi)

35. :age 12$ @ in the se!ond e"uation, repla!e .5/ %ith .51

36. :age 1212/ @ &n the 3

rd

 e"uation of ;ample 5. in the !al!ulation for c, the value of b (14) is omitted from the denominator. &t should be<

.4$./)14)(/5.$)(3)(/5.$(

)6$)($$.225.6(inc   =

−=

37. :age 12/ @ last line of tet @ units should be in not in2. Ahis o!!urs in t%o pla!es.

38. :age 13$ @ repla!e the last paragraph %ith<

Criting the "uadrati! e"uation c is found to e"ual 11.24 in and a = .55 in.

O c! c

 y s   ε ε    =