Architectural drawing on tracing paper with tears caused by tapes

Sensitive tape has caused tears on the adjacent folded paper (right). Besides the tape has slipped due to swelling of the adhesive, and the plastic shrank.
Ink architectural drawing on tracing paper. Meridiana Greyhound Track (Barcelona), by architect Bonet Castellana (c. 1960). Association of Architects of Catalonia (CoAC). More about Degradation mechanisms on pressure sensitive tapes or about the conservation treatment of this particular architectural drawing on tracing paper.