Pattern is required to have combination of the followings;
Example of t-bar ceiling which is not permitted in the project
2.5.2 material and ceiling type permitted in the project as following
2.5.2.1 skim-coat painted ceiling with various levels
2.5.2.2 Exposed ceiling and painted concrete slab soffit
2.5.2.3 Combination of painted gypsum ceiling and painted concrete slab soffit