Division 4 – Masonry

Bermuda masonry is one of the earliest trades on the island. Bermudians have practiced masonry for hundreds of years. Masonry includes the use of limestone blocks. One of the oldest stone block buildings in Bermuda is the Cathedral.

The Bermuda Construction Safety Council masonry curriculum includes architectural drafting, estimating and contract management. Personal Protective Equipment, scaffolding and materials. Layout, leveling and squaring.

Division 4 Masonry involves all forms of masonry materials and methods. From traditional limestone buildings to the more modern concrete block and plaster applications.

Concrete Masonry Unit

A Concrete Masonry Unit (CMU) is a standard size rectangular block used in building construction.

Those that use cinders (fly ash or bottom ash) are called cinder blocks in the United States, breeze blocks (breeze is a synonym of ash)[1] in the United Kingdom, and hollow blocks in the Philippines. In Bermuda, New Zealand and Canada they are known as concrete blocks or more commonly as just blocks. In New Zealand, they are also known as construction blocks. In Australia they are also known as Besser blocks or Besser bricks, because the American-based Besser Company was a major supplier of concrete-block-making machinery. Clinker blocks use clinker as aggregate. In non-technical usage, the terms cinder block and breeze block are often generalized to cover all of these varieties.

Limestone

Limestone is a sedimentary rock composed largely of mineral calcite, the balance being made up by silica, flint, sand and clay.  The primary source of calcite is most commonly marine organisms.  Limestone is quarried from places, which millions of years ago, would have formed the floor of a shallow area of the sea.  Limestone is formed close to earth’s surface and captures fossilised plant and animal life.  Like marble and granite, quality limestone is used in a wide range of interior and exterior building applications.

Masonry BCSC quiz

 

Limestone

Limestone is a sedimentary rock composed largely of mineral calcite, the balance being made up by silica, flint, sand and clay.  The primary source of calcite is most commonly marine organisms.  Limestone is quarried from places, which millions of years ago, would have formed the floor of a shallow area of the sea.  Limestone is formed close to earth’s surface and captures fossilised plant and animal life.  Like marble and granite, quality limestone is used in a wide range of interior and exterior building applications.

Author: Brendon Harris

Architectural Technologist

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