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(civil engineering)
Masonry with an exposed side of square or rectangular stones.



a term applied to items made of natural stone, especially in the form of rectangular blocks, used in their natural form in construction and measured during quarrying by the piece or in cubic meters.

Most ashlar is produced for use in walling; it is made from porous rocks, such as limestones, volcanic tuffs, and coquina, which have good heat-insulation properties and which are relatively light and suitable for processing by cutting, hewing, and hammering. It is quarried by opencut or, less often, underground mining methods with stonecutting and coal-cutting machines and cable saws.

Three types of ashlar are produced for walling. Machine-cut wall ashlar with a sawed surface finish is produced in the USSR with the following standard dimensions: 19 × 19 × 39 cm and 19 × 24 × 49 cm (for limestone products), and 29 × 19 × 39 cm (for tuff products). The weight of the blocks does not exceed 40 kg, and the density ranges from 1,200 to 2,200 kg/m3; the ultimate compressive strength ranges from 0.4 to 40 megapascals per m2 (4–400 kg-force per cm2). Rough-hewn wall ashlar is quarried from tuffs by coal-cutting machines; it is hewn on the face side on milling machines or by hand to dimensions of 30 × 20 × (30–55) cm. Large-block wall ashlar is produced in various sizes, up to blocks as high as the height of a building floor. The face side of porous ashlar has a sawed, hewn, or, rarely, polished texture. More than 10 million cu m of limestone ashlar and 2 million cu m of tuff ashlar are produced annually in the USSR.

Blocks of dense rock, such as granites, basalts, and marbles, are produced for subsequent finishing into facing sheets (made from decorative stone) and stone for walling (for socles and retaining walls). They are quarried only by opencut methods with explosives. Further working is accomplished manually or with pneumatic or steam-jet tools (for granite) or milling machines (for basalt). The dimensions of granite ashlar blocks are (45 or 60) × 17 × (50 or more) cm, and those of basalt blocks are 30 × 20 × (30–60) cm. The face side of dense ashlar has a steam-jet, point, grooved, riffled, hewn, or polished texture.

In the USSR ashlar is produced in the Ukraine (limestone and granite), Azerbaijan and Moldavia (limestone), Armenia (tuff and basalt), the Kabardinian-Balkar ASSR (tuff), and Georgia (teschenite). Ashlar is also produced in France, Italy, Great Britain, the USA, Czechoslovakia, and Yugoslavia.


Proizvodstvo prirodnykh kamennykh stenovykh materialov i legkikh zapolnitelei. Moscow, 1962.
Atsagortsian, Z. A. Prirodnye kamennye materialy Armenii. Moscow, 1967.
Grigorovich, M. B., and M. G. Nemirovskaia. Mineral’noe syr’e dlia promyshlennosti stroitel’nykh materialov i ego otsenka pri geologorazvedochnykh rabotakh. Moscow, 1974.



1. Squared building stone.
2. Ashlar masonry.
3. A vertical stud between the floor beams and rafters of a garret.
References in periodicals archive ?
Sculpted Ashlar represents the perfect intersection between nature and precision with a bold interplay between rounded ledgestone features and more linear forms," says Cultured Stone Product Development and Area Sales Manager Emily Bonilla.
Excellent schools are nearby, adding to the attractiveness of Ashlar Court.
It is generally cut into small-squares or rectangles and has sawed or dressed faces, but the face of ashlar may also be left slightly rough.
The finishing of the ashlar blocks was so precise that the smooth curved walls looked as if they had been mold-formed of cement.
The original house and stable block on the site of the Walton Way development were demolished to make way for the new homes, built in Hamill Warwickshire old blend facing bricks, with cast stone Ashlar dressings and quoins.
Ashlar calls the feature Design Assistant, and what it does is use information from the way the user moves the cursor to infer what he wants to do.
Company: Ashlar, Incorporated Headquarters Address: 12710 Research Blvd.
unit quantities, and designed for light vehicular applications in fast-installing repeating runner or ashlar patterns; 2) XL Supra 6cm, combining equal quantities of 8- x 16-in.
The new facility has automatic opening mechanisms, meaning all curtains, windows and doors can be controlled by the push of a button, and the Grade II listed Westburn House and associated ashlar stone work was restored.
The second addition, built in 1936, is one of the North's best examples of the English Modernist style of architecture, with its distinctive long windows and masses of ashlar fronting.
99) The first ever full-length film from Lego features plastic hero Clutch Powers going up against an evil wizard to save the medieval world of Ashlar.
Ashlar Enterprises, Inc and Statsons Industries, Inc, signed a three-year lease renewal for 928 s/f of office space.