This industry comprises establishments primarily engaged in specialized trades (except foundation, structure, and building exterior contractors; building equipment contractors; building finishing contractors; and site preparation contractors). The specialty trade work performed includes new work, additions, alterations, maintenance, and repairs. Illustrative Examples: Billboard erection Outdoor swimming pool construction Cleaning building interiors during and immediately after construction Paver, brick (e.g., driveway, patio, sidewalk), installation Crane rental with operator Paving, residential and commercial driveway and parking lot Sandblasting building exteriors Fence installation Scaffold erecting and dismantling Interlocking brick and block installation Steeplejack work Manufactured (mobile) home set up and tie-down work Driveway paving or sealing Cross-References. Establishments primarily engaged in--