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218            SECTION 2                                        STRENGTHENING AND REPAIR WORK



        Table 5.5  LRFD primary and secondary load combinations for substructures.
                           Primary Loads                                  Secondary Loads
                                                 Wind on
                    Unfactored                  Substr.
                     Substr. DL  Unfactored  Earth  Unfactored  Water   Wind on
                      DL Reac- LL Reactions  Loads Wind React.  Loads  Live Load Erection  Temper- Support
        Load         tions from   from    on      from     on      from  Load from  Concrete  ature  Settle-
        Combinations  Superstr.   Superstr.  Substr.  Superstr.  Substr. Superstr. Superstr. Properties Gradient ment
                    DC 4 (DC1  (LL 4 IM 4  (EH) &   (WS)   (WA)    (WL)     (EL)   (TU) 4   (TG)   (SE)
                     4 DC2 4  BR 4 PL) 4  (EV 4 ES)                              (CR 4 SH)
                       DW )   (CE) 4 (LS)
        DL 4 HL-93        p      1.75        p     —       1.00     _         p     —         TG     SE
        LL (Strength I)
        DL 4 permit       p      1.35        p     —       1.00    —          p     —         TG     SE
        LL (Strength II)
        DL 4 WL           p      —           p    1.40     1.00    —          p     1.40      TG     SE
        (Strength III)
        DL of superstr.     p    —           p     —       1.00    —          p     —       —      —
        4 substr.
        (Strength IV)
        DL of super       p      1.35        p    0.40     1.00    —          p     0.40      TG     SE
        4 substr. 4
        live load 4
        reduced wind
        on superstr. 4
        substr. 4 wind
        on live
        (Strength V)
         Table 5.5a
                    FX, FY, FZ & MOMENTS MX, MZ  FOR EACH LOAD COMBINATION
          ABUTMENT FOUNDATION LOADS: Factored Primary Forces & Moments From Computer Output
             STRENGTH
         LOAD COMBINATIONS FOR  Substr. DL + DL Reactions  LL Reactions From  Earth Loads on Substructure -Wind On Substr. +  Wind On Live
         STRENGTH I, STRENGTH II,  From Super Structure -  Superstructure -  FACTORED  Wind React. From  Load From
         STRENGTH III & STRENGTH V FACTORED   FACTORED                          Superstructure -  Superstructure -
                                                                                FACTORED     FACTORED
            USE ENVELOPES OF   (DC +  DW)  MAX.                          (LL+IM+BR)+(CE)+(LS)           (EH) + (EV+ES) MAX.  (WS)        (WL)
             FACTORED LOADS  ( D C  +  D W )  M I  . N        ( E H  ( + )  E V + E  ) S  M I  . N
         DL-SUPER+DL-SUBSTR+HL-    1.25DC + 1.5 DW  1.75( LL+I+BR)                     1.5EH+1.35EV+1.5ES        __
         93  L L + EARTH PR.
         STRENGTH I            0.9DC + 0.65 DW                0.9EH+1.0EV+0.75ES
         DL-SUPER+DL-SUB+PERMIT   1.25DC + 1.5 DW             1.5EH+1.35 EV+1.5ES
         LL + EARTH PR.
         STRENGTH II           0.9DC + 0.65 DW  1.35( LL+I+BR)                     0.9 EH+1.0EV+0.75ES        __
         DL  +  WS + EARTH PR.    1.25DC + 1.5 DW             1.5EH+1.35EV+1.5ES
         STRENGTH III          0.9DC + 0.65 DW  _              9 . 0  E H +  0 . 1  E V +  5 7 . 0  E S  1.4 WS                                    _
         DL-SUPER+DL-SUBSTR.+    1.25DC + 1.5 DW  1.35( LL+I+BR)
         LIVELOAD+REDUCEDWIND
         ON SUPERSTR. +
         WIND ON LIVE           0.9DC + 0.65 DW               1.5EH+1.35EV+1.5ES  0.4 WS1.0 WL
         STRENGTH  V                                          0.9 EH+1.0EV+0.75ES
        FOR FOOTING DESIGN                                                           ES = EARTH SURCHARGE
                                              CE = 0
        STRENGTH IV = 0MY = 0LS = 0ES = 0                                          LS = LIVE LOAD SURCHARGE
                                              IM = 0
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