Trench box height adaptor

A trench shoring assembly comprising;

• first and second spaced wall means having upper surfaces, third and fourth spaced wall means stacked vertically upon said upper surfaces of said first and second wall means, said third wall means being stacked upon said first wall means to define a first substantially continuously extending vertical wall and said fourth wall means being stacked upon said second wall means to define a second substantially continuously extending vertical wall, first spreader means interconnecting first ends of said wall means, and second spreader means interconnecting all of said stacked wall means at the second ends thereof and extending across the space therebetween only above said upper surfaces for providing unobstructed space between said spaced wall means therebelow, said second spreader means including first connector means extending vertically for interconnecting said first and third wall means and second connector means extending vertically for interconnecting said second and fourth wall means, a first plurality of vertically aligned support means interconnecting said first wall means and said first connector means, a second plurality of vertically aligned support means interconnecting said third walls means and said first connector means, a third plurality of vertically aligned support means interconnecting said second wall means and said second connector means, a fourth plurality of vertically aligned support means interconnecting said fourth wall means and said second connector means, said second spreader means including tie bar means extending horizontally above said upper surfaces and interconnecting said first and second connector means.