Buildings. Φ Polygonal Building. Φ Roman House = House at Northwest Corner. Roman House A. Drains and Drain Trenches. North-South Trench; Early Hellenistic Fill. East-West Trench. Irregular East-West Trench ... Χ-5 990, 991 ... 555-556 ... Χ-5-100 (pp. 990-991) ... Χ-5-100 ... Χ.990