b'T&R Update(continued from pg 10)We are a national safety consulting company comprised of a group of safety professionals dedicated to developing and implementing Fig.2 Close up of another field sample of hard ,glassy off ratio foam with some adhesive ability but not much regulatory compliance and liability defense for on the roof.Note in Figure 1 the foam bead is skinny, has not risen and nothing is adhering to it as the insulationstrategies to protect corporate assets. boards freely buckled upward.Figure 2 shows a similar condition on a different roof; thin bead of foam, (3/8wide) with spotty adhesion.Not good at all.Excess polyol or B component (Part 2) leads to soft, spongy and weak material.One can usually pick the insulation boards rightOur services and expertise include: up.Again, this Fig.3. Soft, off ratio foam adhesivewith no body, poor bonding is not a goodJob Site Safety Inspections thing.FiguresOSHA Compliance Assistance 3 and 4 show how totally opposite off ratio foam on theOSHA Recordkeeping B side can be compared to off ratio on the A side.TheAccident Investigation foam has very little cohesive strength.It is mildly adheredProject & Site Safety Plan Development to the insulation boards but has no real bond strength at all. Contract Safety Director In summary you want to prevent putting down a poorlyInstructor Led Training adhered roof assembly.If you are using low rise foamConstruction Site Safety adhesive, be aware of how off ratio foam can get you inSafety Program/Policy Development trouble.HavePrequalification/Certification Assistance one of yourMICCS, PICS, PEC, ISNet, and others crew do quality control checks as you proceed.City of Indianapolis WBE Certified, State of Indiana WBE Certified, If the foamWBENC Certified, INDOT DBE Certified,goes off ratio,IACET CEU Authorized Provider stop and call for help if you cannot figureCONTACT US: out how to Fig.4Soft, off ratio foam adhesive coming apart; cohesive failurecorrect the off within the foam ratio problem. 12 W. Vermont Street Indianapolis, IN 46204 Rene Dupuis, PhD PE, of SRI in Middleton, WI, can be reached atPhone: 800-641-5990 RDupuis@sri-engineering.com. Dupuis serves on MRCAs T&RCommittee. www.safetyresources.com'