(10) Field check for water leakage : Typical areas of each type of glass wall constructed shall be checked for water penetration in accordance with AAMA 501.2 or ASTM E1105. This testing will be performed as early in the installation phase as possible. The Engineer will designate the areas of completed wall not less than 2 column bays in width, and the full building height (including returns) to be so checked and shall witness all tests.