Abbreviations
Alt.: Altar
Bm.: Beam
Ch.: Chultun
Chm.: Chamber
Dr.: Door/Doorway
E: East
Fl.: Floor
Li.: Lintel
N: North
PD.: Problematical Deposit
Rm.: Room
S: South
St.: Stela
Str.: Structure
W: West
Selected Architectural Terms
Note: These are just a few terms that occur in the description of the structures reported here. Some are new and used in this volume, others perhaps just not in general use.
Additions
The most recent additions and/or alterations are designated as “A”-level features; they abut “B”-level, which in turn abuts “C” and so on. The primary structure has a letter designation that depends on the number of demonstrably sequent additions or alterations.
Aggregate
In concrete small stones or gravel are essential as stuff that the cement can stick to. Without aggregate concrete is mere grout with little strength as a mass.
Apron
Substructure and platform faces at Tikal are often profiled with an upper part projecting over a lower part. The whole profile is called an apron but at the same time the upper part is regarded as the apron and the lower part as the subapron. Some apron profiles also have a basal molding.
Architectural Development
Structures erected on top of each other constitute an architectural development. Designation is from the surface feature, 1st, down to those below as 2nd, 3rd, etc.
Arrised Corner
A corner that is sharp rather than rounded.
Ashlar
Facing stones cut and dressed to a regular oblong or square shape are called ashlar. Veneer facings are a type of ashlar, as are block facings. Ashlar has the advantage that relatively little shape adjustment is needed on the job site; stone can be cut to shape at the quarry so that work on the job site goes faster. Nevertheless, we do see a certain amount of notching in some ashlar facings and this must have been done on the job.
Axis
The center-line of a structure, running front to rear is known as the principal axis; some structures also, have a secondary axis running from side to side but the great majority of Maya structures at Tikal have only the principal axis. Symmetry of a facade is worked around an axis, which may or may not be emphasized by a wider doorway opening or a sculptural treatment.
Balustrade
Any raised edge to a stair can be called a balustrade. Strictly speaking a balustrade should consist of balusters like miniature columns supporting a railing. The term is used very loosely in Maya architecture.
Ballast
In floors installed on platforms, a layer of relatively smaller aggregate, ballast, is needed to establish a level substrate for the final surface.
Basal Platform
A platform that sustains a single structure, usually supporting a pyramid, is a basal platform.
Batter
Non-vertical faces are battered. Leaning outward is negative batter, inward is positive.
Beam
A spanning member is a beam. Wood beams