Georgian Place-LR 991008D-LOADS FOR
REINFORCED CONCRETE PIPE
TRENCH CONDITION
CLASS C BEDDING
3-4 4-5 5-6 6-7
DIAK Bd* .5-1 1-2 2-3
12 3.33 FT 2577 1510 ]1008 853 945 1057 I182 1314
15 3.63 FT 2317 1376J 949 822 917 1028 1150 1277
18 3.92 FT 1880j 1273 900 801 894 log4 1123 1256
21 4.21 FT 1546J 1185 859 800 876 986 1110 1234
24 4.50 FT 1419: llll 827 BOO 863 972 1093 1218
BOO 854 g61 1078 1202
BOO 835 957 1066 1190
BOO 817 94l 1062 t187
800 BOO 932 1052 1176
800 800 888 1034 1159
m 27 4.79 FT 1201 978 800
~ 30 5,08 FT 1016 860 800
o 33 5.38 FT 872 814 800
m 36 5.67 FT BOO 800 800
~ 42 6.25 FT 800 800 800
~ 48 8.83 FT BO0 BO0 BOO
~ 54 9.42 FT 800 BOO BOO
BOO 855 998 1146
800 828 963 lll4
800 806 934 1078
800 BOO 913 1048
BO0 800 894 1024
800 BOO 878 1004
BO0 BOO 864 987
8O0 800 853 972
BO0 842 960
102 14.08 FT 800 800 800 800 800 800 833 949
108 14.67 FT 800 800 800 800 800 800 824 939 ll41
114 15.25 FT 800 800 800 800 800 800 817 930 1129
120 t5.83 FT 8DD 800 800 800 BOO 800 BlO 922 lll8
* Bd is the width of trench based upon pipe O.D. +2' for 42" I.D. or
less, and O.D. +4' for greater than ¢2' I.D. Pipe O.D. is based
upon AS~4 C-76 wall B.
** When the height of cover over the pipe is less than 10', it is not
necessary to maintain vertical trench sides. When the height of
cover is 10' or greater, the sides of the trench installation must
be vertical at )east to a height of l' above the top of the pipe.
For this table to apply, the trench wi6ths are not to exceed Bd.
Note 1 - When D-loads are greater than 3000-D, consult the text,
Sec. 9-300.
800
800
~ ~ 60 10.00 FT 800 800 BO0 800
, 66 10.58 FT 800 800 8OO 800
~ 72 11.17 Fi 800 800 BO0 800
o o 78 11.75 FT 800 800 800 800
> 84 12.33 FT 800 BOO BOO 800
m 90 12.92 FT 800 800 800 800
~ 96 13.50 FT 800 BOO BOO 800 800
FILL HEIGHT, FEET
7-8 ,~ lO 12
Note 2 - Minimum recommended cover is 12".
14 16 18 20 25 30 35 40 45 50
1512 1734 2009 2297 2579 2700 2932 3089 3196 3268 3317 3350
1431 1675 1956 2208 2345 2464 2696 2858 2972 3051 3106 3145
1645 1904 2059 2194 2313 2548 2717 2839 2926 2988 3033
1623 1803 1955 2090 2209 2449 2626 2756 2851 2921 2972
1558 1728 I879 2014 2134 2381 2565 2703 2806 2884 2942
1503 1671 1822 1958 2079 233l 2523 2670 2781 2867 29~
1459 1626 1777 1914 2037 2295 2495 2649 2769 2862 29~
1423 1590 1742 1879 2004 2268 2475 2638 2766 2866 2945
1394 t561 1713 1851 1978 2248 2462 2632 2768 2876 2961
1350 1516 1669 1810 1940 2220 2448 2633 2784 2906 3005
1624 1853 2058 2320 2582 3127 3520 3860 4153 4406 4624
1589 1786 2046 2307 2568 3023 3415 3756 4054 4313 4539
1538 1733 2035 2295 2495 2941 3333 3677 3979 4244 4477
1498 1763 2024 2239 2432 2876 3268 3614 3921 4192 4432
1464 1743 1989 2189 2381 2822 3214 3564 3875 4152 4398
1436 1704 1949 2147 2337 2777 3171 3523 3838 4121 4374
1411 1672 1914 211t 2300 2739 3134 3489 3809 4097 4356
1391 1694 1885 2080 2268 2707 3103 3461 3785 4078 4343
1372 1621 1859 2054 2241 2679 3076 3437 3765 4063 4334
1357 1600 I836 2030 2217 2654 3053 3417 3749 4051 4327
1798 1991 2176 2614 3016 3385 3724 4035 4321
1319 11552 1782 1974 2159 2597 3000 3372 3714 4030 4320
_J
TABLE 6
FILE' No. 866 10/08 '99 14:48,~.~[:TIPTON ENGNEERING
972 22_2_~1946
P~GE 3
11 ~~Optional- May
l_~, Vary O' to full
trench deDth
HEIGHT OF COVER
to' OR MORE LESS THAN. lOt
PERMISSIBLE TRENCH SHAPES
FOR
TRENCH CONDITION
!~lgure 2
CLASS A CLASS B
~LASS B ON
~GK ~TION
BRIDGE DIVISION HYDRAULIC MANUAL
12-8~
F~LE No. 866 10×08 '99 14:48~J~TIPTON ENGNEERING
972 22,,~19a6
P~GE 4
of bid I?~nS and slmpl Ify the admlnls?ra'tton of a
proJ act:
For O-loads Up to 800-O Use 800-0
Above 8OO-D to 1000-D IO00-D
Above 1000-O to 1350-0 1:~50-D
Above 1:~50-0 to 1700-0 1700-D
Above 1700-0 ,o 2000-D 2000-0
Above 2000-0 500-0
I ncrement's
The actual computed D-load may be specified fac
bidding purposes, ~ Ithou? adhering to the
Increments above, but this should occur only when
?here 15 sufficient quantity of a pipe size to
warrant the manufacturer of a speclflc D-load.
Because conditions vary arras5 the State~ the
manufacturers should be contacted to confirm any
suspected advantage.
9-400. STRENGTH FOR JACKED PIPE
For Jacked pipe, there ara two loads to be aware
of mhen establishing strength requirements, One
Is the axlal or thrust load caused by the Jerkin9
forces applied during the COnStruction a~d the
load due to earth cover and live loads.
The earth and live loads have already been
covered In this chap?ac.
standard concrete pipe well IS adequate ?o reels?
s~resses encountered In normal JacKing
operations, If certain construction ~echnlques
are foll oeed. To prevent localized stress
concentrations, It Is necessary to provide
relatively uniform dlstributlon of the axial
loads around the periphery of the pipe. This
requires that the pipe ends be parallel end
sq=,are for uniform con?actw and tha~ the Jacking
assembly be arranged $o that the Jacklng forces
are exerted parallel to the pipe axis. If
excessive jacking pressures are anticipated due
to long ~acklng distances. Intermediate jacktflg
stations should be provided.
In summary, ?he strengths required for earth and
live I oad~ are mo~e ?hen adequate to withe?and
?he axial loads of a normal jacking ogeratlon If
the above requirements ere met.
12-85 BRIDGE DIVISION HYDRAULIC MANUAL
9 - 4