TY - GEN AU - W J Parker AU - M Paabo AU - J T Scott AU - D Gross AU - I A Benjamin C2 - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD DA - 1975-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.BSS.72 LA - en PB - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD PY - 1975 TI - Fire endurance of gypsum board walls and chases containing plastic and metallic drain, waste and vent plumbing systems: ER -