scope:

INTRODUCTION

The micro- and macro-biological degradation of organic materials has been of great concern the world over. Fungus was found to be a severe problem during World War II, particularly in tropical and subtropical climates where fabrics deteriorated rapidly and electrical equipment malfunctioned. Similarly, malfunction of marine communication cables due to attack of living organisms on outer cable materials has been a continuing problem. Rodents have caused damage to underground power and communication cable. Termites have been responsible for damage to structural organic materials in most climates and soils.

This report provides available information regarding the resistance of thermoplastic piping materials to micro- and macro- degradation. Summary information follows on resistance of thermoplastic pipe to fungi, bacteria, termites, and rodents. A considerable number of papers directly and indirectly related to plastic pipe have been screened. References that have pertinent data are presented in a list at the end of this report and are grouped according to their relative significance.