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BEARING

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BEARING Powered By Docstoc
					Concrete Industries, Inc.                                                  6300 Cornhusker Hwy                                              Lincoln, NE 68529-0529
11/16/2011                                                                    P.O. Box 29529                                                   Phone: 402-434-1800




                                 REINFORCED CONCRETE BEARING DESIGN
              Project:

       Member Loc.:

                                Actual loaded area, A1   =     16.875 in^2                                   CRACKED AREA   =     59    in^2
                               Max. similiar area, A2    =     16.875 in^2                         Shear friction factor    =     1.4   monolithic
                               Length of bearing per -                                           Concrete 28 day strength   =       6   ksi
                            pendicular to free edge, w   =          4.5 in                           Concrete unit weight   =     145   pcf
                            Distance from free edge to                                                Reduction for shear   =    0.75
                                  center of bearing, s   =          2.25   in                       Reduction for bearing   =    0.65
                              Overall height of member   =            24   in                           Connection factor   =     1.3
                                   Average shear width   =           4.5   in
                                    Fy for ( Avf + An)   =            60   ksi                              Fy for A(sh) =         60 ksi

  ULTIMATE FACTORED LOADS
                                     V ult     =     26.7    kipp                                   Concrete Coefficient =          1 Normal wt.
                                     N ult     =      5.3    kipp                                Eff. shear fric. coeff. =      2.39 Unreinf.

  APPLIED FACTORED DESIGN LOADS                                                               ALLOW. UNREINF. BEARING =         30.1    kipp
                          V des                =     34.71 kipp                            Reinf. Bearing Req'd !
                          N des                =     6.942 kipp

  REINFORCED BEARING ANALYSIS
                                             Maximum Reinforced Bearing =                                          81 kipp
                                                                                     Section OK for Reinforced Bearing

  STEEL REQUIREMENTS                                                               Eff. shear fric. coeff. =                      3.4 Reinforced
                                    Avf + An =                  0.38 in^2
                                                                 Development Length For (Avf and An) steel =                     15.9 in
                                       A(sh) =                  0.11 in^2

				
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posted:11/16/2011
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