Building Codes and Ordinances ARC 227

Building MaterialsChapter 19 - ConcreteStrength and Durability – Factors of Concrete Strength- Mix design- Temperature at time of placement and curingCylinder tests – field tested compressive strength of concrete to ensure it meetsrequirementsFormwork – Substantial tight to prevent leaks and blow-outsallowed to provide conduits through walls as long as they are not harmful tothe design and approved by engineerJoints –Construction Joints – joints between concrete members that maintainstructural integrity (transfer)Control or Contraction Joints – built-in places of weakness to regulatecracking in concreteIsolation Joints – joints separating adjoining parts of concrete structure toallow movementRebar and Reinforcing – Deformed steel rods placed in concrete to add tensionstrength to concreteMax. bends in rebar controlled in this sectionCoverage – amount of concrete around rebar3” where concrete exposed to earth permanently - footings2” where exposed earth or weather – walls1 ½” at floor slabs1 ½” around beams and columns