Stone+Exercise

2 defi n i ti ons: 2 S tatements of comparison ad contrast:
 * __ Rubble __ : roughly broken stones of any shape bounded in mortar. || __Ashlar masonry __ consists of regularly cut blocks (usually rectangular)  ||   ||
 * In most areas where stone is available, it has been favored over other materials for the construction of monumental architecture. ||

Although it has generally been replaced as a structural material by cheaper and more efficient manufactured products, it is still widely used as a surface veneer for its practical and expressive qualities.

2 S tatements of cause and effect:
 * Because of its weight and the precision with which it can be shaped, stone masonry (in contrast with brick) does not depend on strong bonding for stability where it supports only direct downward loads. ||
 * The best stone (and brick) bonding is that in which blocks are placed so that the vertical joints in one course are not about the joints in the course above and below, since the stone resists deformation better than any bonding material. ||

2 adjectives in superlative form:
 * __Simplest __and __cheapest__ stonework ||
 * 2 adjectives in comparative form: ||
 * Stone vaults and arches require __more__ support and buttressing __than__ equivalent forms in other materials. ||   ||
 * Since the stone resists deformation __better__ __than__ any bonding material. ||