Interiors

CSI and CSC Release MasterFormat 2014 Update
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CSI and CSC Release MasterFormat 2014 Update

CSI and CSC recently released the 2014 updates to MasterFormat, their flagship... More

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What caused the mold?

Our firm recently tuckpointed a hotel in the Chicago area that was constructed in the late 1960s. The walls were brick veneer with 4-inch concrete block backup. There was a 1 1/2-inch air space between the brick and concrete masonry. There were steel hat channels filled with batt insulation onto which gypsum wallboard was attached on the interior face of the block wall. Rooms throughout the complex were similarly constructed.In conjunction with tuckpointing the building, interiors of the guest rooms were renovated. There was considerable mold growth in the rooms two years following the work. The mold appeared to be growing on the paste of the vinyl wall covering. The problem was by far the worst on the south and west elevations. The interior walls of the rooms were painted prior to the renovation.Do you have any ideas about what may be causing the problem? Is the vinyl wall covering the culprit? More

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Interior efflorescence

I own a nearly 100-year-old house in the Chicago area with a brick foundation that is three wythes thick. The inside of the basement walls are covered with white efflorescence. Is this a problem and how can I correct it? Should I dig up the soil on the outside and install a membrane? More

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Lateral Pressure Can Harm Interior Walls

The morning after a spring windstorm in Chicago, workers in a 22-story office building noticed mortar and debris on the penthouse floor. A 16-foot high, 75-foot long concrete masonry interior wall was severely damaged, with many step and horizontal cracks. More

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Interior partition support

Is it necessary to support the tops of interior masonry partitions? How can these walls be connected to the structure while still allowing the structure to deflect? More

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Interior brick spalling

The interior face of masonry walls in a clock tower near Chicago are spalling badly. When the spall was removed, the back face was covered with a white powdery substance. Has this substance caused the spalling or has it entered the crack after the spall occurred? What can be done to stop this from occurring? More

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