Forensic Engineers and Consultants

Tag Archive: water damage

  1. How Long Before the Pipes Freeze?

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    An unexpected severe winter freeze will remind many people and businesses that when water in a pipe freezes, the ice will expand and burst the pipe or pipe fitting.  Large losses will result from flooding when the temperatures rise.  Insulation will help, but not prevent freezing.  Insulation simply slows down the rate of heat loss.  The time of exposure to subfreezing temperature is an important factor.

    The American Society of Refrigeration and Air Conditioning Engineers (ASHRAE) Handbook of Fundamentals has a short entry on the topic (Chapter 23, page 23.5-6), which gives an equation for estimating the time that it will take an insulated pipe to freeze, (more…)

  2. Water Damage from Leaking Shower Stalls

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    Have you ever had to have a leaking shower pan for a tiled shower stall replaced, only to have a recurrence a few years later? If so, it is likely that it was not properly built and/or repaired. In most installations, the shower stall is constructed with an underlying one-piece flexible membrane of PVC that is attached to the wall studs before the backer board and wall tile is installed. No nails or screws should penetrate the membrane below the level of the curb of the shower stall. The only opening in the membrane below the curb must be the hole for the shower drain to connect to the house plumbing. The shower drain is designed to allow water on top of the membrane to flow into the drain via weep holes for that purpose. (more…)

  3. Flood Damage to Electrical Equipment

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    As a result of the recent weather, those of us in South Carolina have gained a renewed appreciation of the damage that can result from flooding. Even a few inches of flood water can result in property damage and a loss of services in addition to the immediate risk of physical harm. (more…)

  4. A Small Water Line Leads to a Large Loss

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    A large oceanfront house was custom built after two years of planning and construction.  The house had three stories over an elevated foundation.  Shortly after the house was completed, the owners arrived one evening and found water pouring from above when they parked in the garage beneath the living spaces.   (more…)

  5. Catastrophic Weather – Lessons Learned

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    In recent years, with Hurricane Ike in Galveston, TX in 2008 and Superstorm Sandy along the New Jersey and New York coastline in 2012, we have had the opportunity to see firsthand the destructive power of storms like these.  We were “boots on the ground” literally days after the initial coastal strike.  The damage observed to residential and commercial structures was far reaching, diverse and some preventable.  We want to share some “lessons learned” from these observations for these two CAT events. (more…)

  6. How Long Before The Pipes Freeze?

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    The unusually severe 2014 winter in the eastern United States has reminded many people and businesses that when water in a pipe freezes, the ice will expand and burst the pipe or pipe fitting.  Large losses will result from flooding when the temperatures rise.  Insulation will help, but not prevent freezing.  Insulation simply slows down the rate of heat loss.  The time of exposure to subfreezing temperature is an important factor. (more…)

  7. Frozen Tankless Water Heater Losses

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    Recently, we have seen a number of water damage losses stemming from gas-fired and electric tankless water heaters exposed to freezing temperatures. Tankless hot water heaters have been growing in popularity and use due to their energy savings over traditional water heaters. These units are typically installed on the exterior of a home or business in areas of the country where prolonged freezing or extremely low temperatures are not common. (more…)

  8. Freeze Damage to Fire Sprinkler Systems

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    The ongoing frigid temperatures serve as a reminder of the many investigations by Warren engineers involving fire sprinkler systems that have failed when some part of the system was exposed to the sub-freezing conditions. Interestingly, failures do not necessarily occur within the area of greatest freeze exposure, as the failure mechanism is the extreme pressure that results from the growth of an ice plug inside the exposed pipe in which the high pressure will rupture the weakest component which may even be located in a heated area of the sprinkler system. (more…)

  9. Improper Piping Installation Leads to Costly Repair

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    A newly constructed house was flooded when a plumbing pipe ruptured in the attic during unusually cold weather well below the freezing point.  This was a very large house and had been constructed with the most visually appealing and expensive finish materials in the construction industry. (more…)

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