Wyndham Grand Batumi Gonio. Family Club. Building A 1. Stained Glass Curbs, 2nd Floor The curb installation starts with marking, after which the formwork is set, concrete is poured and compacted. Once the concrete has hardened, the dismantling of the formwork and finishing of the curbs is completed with the installation of the stained glass windows, ensuring their tightness and correct positioning. Building B Due to unfavorable weather conditions, construction work on the site today is limited.