Architecture and engineering share a common language built around design, structure, materials, and systems. This glossary captures the essential vocabulary professionals use to describe how buildings are conceived, analyzed, documented, and constructed. From Aesthetics to Zoning, these terms define the workflow, constraints, and creative possibilities of the built environment.
A
- Aesthetics — The visual and sensory qualities of a design, including form, proportion, color, and texture.
- Aggregate — Granular material (sand, gravel, crushed stone) used in concrete and asphalt.
- Arch — Curved structural element that spans an opening and transfers loads to supports.
- Axonometric — A type of 3D drawing where axes remain parallel, not converging.
B
- Beam — Horizontal structural member carrying loads across a span.
- BIM — Building Information Modeling; a digital representation of a building’s physical and functional characteristics.
- Bracing — Elements that resist lateral forces like wind or seismic loads.
- Building Envelope — The physical barrier between interior and exterior environments.
C
- Cantilever — A projecting structure supported only at one end.
- Cladding — Exterior material applied to a building façade.
- Column — Vertical load-bearing element.
- CAD — Computer-Aided Design software for drafting and modeling.
D
- Dead Load — Permanent structural weight (materials, fixed equipment).
- Detailing — Precise drawings showing how components connect.
- Drainage — Systems that remove water from roofs, sites, or foundations.
E
- Egress — Safe exit routes from a building.
- Elevation — Orthographic drawing of a building façade.
- Energy Modeling — Simulation of a building’s energy performance.
F
- Facade — The exterior face of a building.
- Footing — Base of a foundation that spreads loads to the soil.
- Fire Rating — Time a material or assembly can withstand fire exposure.
G
- Glazing — Glass components of a building envelope.
- Grade — Ground level around a structure.
- Grid — Modular layout guiding column and wall placement.
H
- HVAC — Heating, Ventilation, and Air Conditioning systems.
- Header — Beam over an opening in a wall.
- Hinge — Connection allowing rotation but not translation.
I
- Insulation — Materials reducing heat transfer.
- IRC/IBC — International Residential/Building Codes.
- Isometric — 3D drawing with equal angles between axes.
J
- Joist — Horizontal framing member supporting floors or ceilings.
- Jamb — Vertical side of a door or window opening.
- Joint — Connection between building components.
K
- Kip — Unit of force equal to 1,000 pounds-force.
- Knee Brace — Diagonal support between beam and column.
- Keystone — Central stone at the top of an arch.
L
- Live Load — Variable loads (people, furniture).
- Lintel — Beam spanning an opening in masonry.
- Load Path — Route by which forces travel to the ground.
M
- MEP — Mechanical, Electrical, and Plumbing systems.
- Moment — Rotational force acting on a member.
- Modulus of Elasticity — Material stiffness measure.
N
- Nosing — Front edge of a stair tread.
- Nail Plate — Metal connector for timber framing.
- Noise Reduction Coefficient — Rating of sound absorption.
O
- Overhang — Roof extension beyond walls.
- Oculus — Circular opening in a roof or dome.
- Orientation — Building placement relative to sun/wind.
P
- Parapet — Low wall at roof edge.
- Pier — Vertical support similar to a column but heavier.
- Plan — Horizontal cut drawing of a building.
Q
- Quantity Takeoff — Measurement of materials for estimating.
- Quoin — Corner masonry blocks for strength or decoration.
- Quick-Set Concrete — Fast-curing concrete mix.
R
- R-Value — Thermal resistance rating.
- Rebar — Steel reinforcement in concrete.
- Riser — Vertical portion of a stair.
S
- Shear Wall — Wall resisting lateral forces.
- Span — Distance between supports.
- Soffit — Underside of an overhang or arch.
T
- Truss — Triangulated structural framework.
- Thermal Bridge — Path of heat transfer through materials.
- Tensile Strength — Maximum stress a material can withstand when stretched.
U
- U-Value — Rate of heat transfer through an assembly.
- Underlayment — Protective layer beneath roofing.
- Urban Fabric — Physical layout of streets, blocks, and buildings.
V
- Vapor Barrier — Material preventing moisture diffusion.
- Ventilation — Movement of air through a building.
- Vault — Arched ceiling or roof structure.
W
- Wainscoting — Decorative paneling on lower wall portions.
- Wind Load — Force exerted by wind on structures.
- Weld — Fused metal joint.
X
- X-Bracing — Crossed diagonal bracing for lateral stability.
- XPS Insulation — Extruded polystyrene rigid foam.
- X-axis — Horizontal axis in drawings or models.
Y
- Yield Strength — Stress at which a material begins to deform permanently.
- Yard — Open outdoor space adjacent to a building.
- Yoke — Structural connector or clamp.
Z
- Zoning — Regulations governing land use and building form.
- Zero Lot Line — Building placed directly on property boundary.
- Ziggurat — Stepped ancient Mesopotamian temple form.
