Ancient Civilizations of Mexico and Central America

Plate XV

Fig. 20. Groundplans of Yaxchilan Temples

Architecture

The idea of a civic center is admirably illustrated in Mayan cities, particularly those of the first brilliant period. The principal structures are built around courts or plazas and there is usually an artificial acropolis which is a great terraced mound serving as a common base or platform from which the individual pyramidal bases of several temples rise. At some sites this acropolis is a natural hill which has been trimmed down or added to, but at other sites it is entirely artificial. At Copan there is an especially fine example of artificial platform mound rising from one end of the Great Plaza and affording space for several temples, as well as for sunken courts with stepped sides that may have been theatres. The river washing against one side of this great mound has removed perhaps a third of it and made a vertical section that shows the method of construction. It is apparent that the mound was enlarged and old walls and floors buried.

Mayan buildings are of two principal kinds. One is a temple pure and simple and the other has been called a palace. The temple is a rectangular structure crowning a rather high pyramid that rises in several steps or terraces. As a rule the temple has a single front with one or more doorways and is approached by a broad stairway. The pyramid is ordinarily a solid mass of rubble and earth faced with cement or cut stone and rarely contains compartments. Some temples have but a single chamber while others have two or more chambers, the central or innermost one being specially developed into a sanctuary. The so-called palaces are clusters of rooms on low and often irregular platforms. These palaces may have been habitations of the priests and nobility. The common people doubtless lived in palm-thatched huts similar to those used today in the same region.

The typical Mayan construction is a faced concrete. The limestone, which abounds in nearly all parts of the Mayan Area, was burned into lime. This was then slaked to make mortar and applied to a mass of broken limestone. The facing stones were smoothed on the outside and left rough hewn and pointed on the inside. It is likely that these facing stones were held in place between forms and the lime, mortar, and rubble filled in between. The resulting wall was essentially monolithic. The rooms of Mayan buildings are characteristically vaulted but the roof is not a true arch with a keystone. The vault, like the walls, is a solid mass of concrete that grips the cut stone veneer and that must have been held in place by a false work form while it was hardening. The so-called corbelled arch of overstepping stones was doubtless known to the Mayan builders but was little used. Taking the single rectangular room as the unit of construction the width was limited to the span of the vault, which seldom exceeded twelve feet, while the length was indeterminate.