Sand rail car modularized lengthening modification programs and railcars formed thereby

A method of modification of a railcar to form a modified railcar comprising the steps of:

• providing an existing railcar with a plurality of hoppers supported on a pair of trucks, with the laterally end hoppers including sloped end floors;
• removing a center section of the existing railcar at cut-lines between the trucks and maintaining two repurposed end sections for the modified railcar, each end section including a center sill section, a pair of side sill sections;
• a pair of top chord sections, a pair of side wall sections with each side wall section extending between a side sill section and a top chord section;
• forming an underframe construction of the modified railcar between the repurposed end sections, wherein the underframe construction includes a center sill construction coupled to the center sill sections of each repurposed end section, a plurality of hopper gate openings between the repurposed end sections, and at least one hopper divider between the repurposed end sections;
• and
• forming a pair of sidewall constructions of the modified railcar between the repurposed end sections, wherein each sidewall construction includes a side sill section coupled to one of the side sill sections of each repurposed end section;
• a top chord section coupled to one of the top chord sections of each repurposed end section, a side wall section extending between the side sill section and the top chord section.