AWCI Manual 12B Review with Complete Solutions

What is the purpose of Manual 12B? - ANSWER-To provide field inspection procedures for the testing of thin-film intumescent fire resistive materials (TFIFRM) applied to structural members at thicknesses not greater than 660 mils (16.76 mm) Who should inspect the substrate conditions prior to application? - ANSWER-The TFIFRM applicator and/or representative of the manufacturer What should the surface conditions be like prior to application of TFIFRM? - ANSWER-Substrate shall be free of oil, dirt, grease, release agents, loose scale, paint , primer or any other surface condition that may prevent adequate adhesion (If there are primers, paints or other surface conditions, they must be determined by the fire-resistance-rating design criteria or the manufacturer's specifications. What temperature should be maintained and for how long during application? - ANSWER-A minimum substrate temperature of 50 F (10 C) during and for a minimum of 72 hours after the application of TFIFRM. (Unless otherwise recommended by the TFIFRM manufacturer. What is the relative humidity requirement regarding TFIFRM? - ANSWER-Relative humidity may not exceed 75% during the application and drying/curing period unless otherwise specified in the manufacturer's specifications. What're the requirements for ventilation? - ANSWER-Should ventilation not be sufficient, forced ventilation shall be introduced. In enclosed areas, ventilation shall not be less than 4 complete air exchanges per hour until material is dry. What are the four physical and visual tests for TFIFRM? - ANSWER-1) Condition of Substrate 2) Thickness of Application 3) Condition of Finished Application 4) Inspection of Patching Work Who is allowed to inspect the TFIFRM? - ANSWER-Shall be conducted by an accredited independent inspector and/or testing laboratory, and/or agency acceptable to the owner or his representative What requirements are there for the personnel testing the TFIFRM? - ANSWER-Personnel testing TFIFRM shall be familiar with the application and use of these products and shall be thoroughly trained in test methods and experienced in conducting field testing procedures. SHALL HAVE THREE YEARS of testing experience.