The National Assembly has the power to lay and collect Taxes, Duties, Imposts, and Excises. The jambs terminate in bulky chamfered imposts. The hall is bisected by a timber arch with moulded pilasters, imposts, extrados and keystone. He exempted his soldiers from imposts and made them Darqan. The Jews were also burdened with heavy taxes and imposts. The entablatures serve as imposts supporting the semicircular arch that tops the central light. The arcades themselves have solid, square piers with imposts. The imposts of the side portals are re-used Roman architraves. The main portal is enclosed by an architrave and two richly decorated imposts. The south porch has a wide outer entrance with moulded round arch and moulded imposts. No man can settle down, being despoiled by the imposts of the Asiatics. It has a splayed inner archway with re-cut imposts. Within this, there is an arched moulding springing from square imposts. The surface has "discreet", subtly ring-moulded imposts which hardly interrupt the smooth lines. This measures by ; the height to the imposts is .