infty = 100;
eps = 0.01;

base_l = 16;
base_h = 2;
rib_h = 2;
rib_w = 1.5;
rib_space = 1.9;
ribs = 5;

// base
base_w = ribs*rib_w + (ribs-1)*rib_space;
translate([-base_w/2, -base_l/2, 0])
	cube([base_w, base_l, base_h]);

for (x = [0:ribs-1])
	translate([-base_w/2 + x*(rib_w+rib_space), -base_l/2, base_h-eps])
		cube([rib_w, base_l, rib_h + eps]);