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Page 3 <br /> <br />visual room. What they would do is create a loop in the 4 inch supply feeding <br />these areas and install a backflow preventer. This would allow the antifreeze <br />to remain in these general areas and prevent the possibility of freezing. The <br />one area they could not do this type of system in is the soffited area in the <br />corridor. <br /> <br />The one nice thing that has taken place in the time frame of trying to correct <br />these areas is time itself. Since we have allowed the openings to remain in <br />the corridor area, allowing heat to go up into the soffit, it has kept the branch <br />lines of the sprinkler system from freezing. Since this is a working solution, I <br />have contacted Jim from B & D Plumbing and Heating. At this time, he is <br />writing a proposal for installing return vents in the soffit area allowing the <br />heat to penetrate more efficiently into the soffit area and hopefully <br />eliminating the possibility of freezing. Once they cut the soffit open we can <br />repair the insulation that has fallen. This insulation was the problem of the <br />frozen line to begin with. <br /> <br />After talking with Jim from B & D regarding the solutions of this area, it has <br />been determined that the cost will be less than $500 for the installation of <br />these vents. The biggest cost is due to this area being a rated corridor. As <br />such, fire dampers will have to be installed into these openings. These <br />dampers will close if a fire does occur and will maintain the 1 hour rating. <br />These above corrections must be completed prior to the corrections of the <br />water damage. <br /> <br />After reviewing the plans and the insulation envelope system for this <br />building, I feel that with these corrections we have taken care of all the <br />problem areas and I am hopeful that this problem will not happen again. <br />There are, however, always concerns regarding a sprinkler system in the <br />Minnesota cold weather. We have had numerous calls at the Fire <br />Department regarding sprinkler heads going off in the vestibule areas. <br />These areas are always a concern because of ice build-up on the threshold <br />and allowing the door to remain open and having cold air coming on to these <br />sprinkler heads. I am hopeful with proper maintenance of our doors and <br />keeping these vestibule areas warmer than the rest of the building, we <br />should not have a concern. <br /> <br />I wish I could give these corrections a 100% possibility of no further failures, <br />but, there is always unforeseen problems. I would, however, give these <br />corrections a 98% probability of no future problems. <br /> <br />The last item is the correction of the water damage. Out of three companies I <br />have only received one bid price for the water damage corrections. This bid <br />for the repair of the sheetrock and painting is approximately $1,780, and this <br />item should be taken care of by the insurance company. The other part of the <br /> <br />csl-31/bz <br /> <br /> <br />