The Lintel
No. 4. The Lintel.
The joints of the Lintel necessarily occur over the centres of the supporting columns, and the space between was controlled by the size of the obtainable material and the imposed weight it could bear; the result being, as in the great hall at Karnak, a forest of closely spaced columns. It was not until the principle of the Arch was developed into vaulting that interiors of any considerable dimension with clear floor spaces were possible.
Lintel construction was employed in the Egyptian, Chaldean and Greek styles.
The Arch, as a constructive form, did not appear until a later period, and possibly was due to some extent to the employment of brick and stones of small size.
No. 5. Tomb of Tantalus in Lydia. Vault form, but not vault construction.
Form or shape is not involved, as it is quite possible to so shape the Lintel as to give the appearance of the Arch by cutting the underside to the required curve. In the early Greek architecture examples have been found of both Arch and vault appearance, but these are the result of horizontal courses, successively projecting; that is, built in the form of inverted steps, the underside being cut to the arch curve, and is a form of construction restricted to bridging relatively small areas.