In biology, the active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction. The active site consists of residues that form temporary bonds with the substrate (binding site) and residues that catalyse a reaction of that substrate (catalytic site).
Seattle is rolling out 11 rainbow crosswalks in Capitol Hill this week, adding a colorful bang to the annual Pride celebration. The crosswalks cost the city $66,000, said Seattle Department of Transportation spokesman Rick Sheridan, and are permanent.
Unpainted, deep footing (3 foot), rebar, sand, blocks, mortar and labor should come out to around $32 a linear foot or in your case $6,700. This is six foot high wall. Pre-colored 8x8x16 will run you $37/linear foot but less maintenance, so $7,740.