A (board fence) may undergo an erection.Logical formLearned from3 sentences. (Tariff barriers) may undergo an erection.Logical formLearned from3 sentences. (Foundation forms) may undergo an erection.Logical formLearned from3 sentences. (Steel building frames) may undergo an erection.Logical formLearned from3 sentences. Elements of facilities may be prefabricated off an (erection site).Logical formLearned from3 sentences. Activities may be associated with an erection of facilities.Logical formLearned from3 sentences. A project may undergo an erection.Logical formLearned from3 sentences. A quality can be constituted-of-or-filled-with erection.Logical formLearned from3 sentences. An erection can be arbitrary.Logical formLearned from3 sentences. A person may maintain an erection.Logical formLearned from3 sentences. A capacity can be for erection.Logical formLearned from3 sentences. An erection can be improper.Logical formLearned from3 sentences. Fortifications may undergo an erection.Logical formLearned from3 sentences. A clubhouse may undergo an erection.Logical formLearned from3 sentences. Checkpoints may undergo an erection.Logical formLearned from3 sentences.