structure to clamp around a portion of the side frame in addition the second wire support 114 may also include two claim pairs 112 which are also designed to clamp around a portion of the side frame not shown the supporting portion 110 may also include base members 124 designed to support the entire dowel bar assembly 30 y upon the ground surface prior to the pouring of the concrete the end cap 40 y eliminates the need to have connection wires not shown having a curved portion and simply allows the dowel bar 36 to be connected to a cross wire not shown referring now to fig9 a the stackability of the dowel bar assembly 30 y is illustrated fig9 a illustrates that one supporting portion 110 rests on top of another dowel supporting portion 110 and the connecting portion 108 of one dowel bar assembly 30 y passes through the largest one of the apertures 118 of another dowel bar assembly 30 y referring now to fig9 b a cross sectional view provides additional detail of the stacking illustrated in fig9 a this view illustrates clearly that the connecting portion 108 extends through an aperture 118 and supports the apron 116 along a support surface 126 therefore in some situations it is preferable to pre assemble the dowel bar assembly 30 y prior to shipping to the construction site the stackability of these dowel bar assemblies 30 y facilitates ease in transporting these dowel bar assemblies 30 y referring now to fig1 an alternative aspect of an end cap 40 z is illustrated as in the earlier aspects like numerals are used to refer to like parts and similar parts are designated with a z symbol the end cap 40.