Common use of Types of Masonry Clause in Contracts

Types of Masonry. The stone masonry will be divided into two (2) types, Type A and Type B, according to cement mortar used for jointing. The cement-sand ratio by volume is given in the following table: Type of stone masonry Ratio of cement-sand Type A One part of Portland cement to three sand (1:3) Type B One part of Portland cement to four sand (1:4) Type A stone masonry shall be used for protection work against abrasion and attack by boulder and gravel. Type B stone masonry shall be used for all stone masonry structure such as flumes, walls, piers, transition of canal structures, etc.