SETTLEMENT CRACKS EXPLAINED IN FLORIDA Dated 19 September, 2009
Does your Florida property have cracks to the exterior walls and are you concerned about them? If so let me help explain how they probably got there.
My Name is John McLoughlin I am a UK Chartered Surveyor, Building Engineer and Florida Home Inspector
Many properties in Florida are built on a concrete slab foundation with concrete block exterior walls covered with stucco for waterproofing. In many properties that I have inspected for clients there has been an element of cracking observed to the exterior walls.
If you ask many Florida builders and even realtors they will say this is common in Florida but rarely can they explain correctly why this is.
The majority of the ground soil in Florida is sand based and in many areas the properties have also been built on reclaimed swampland. The construction process involves making the soil stable to support the weight of a structure. Various methods are adopted including “dewatering” and back filling with soil imported from other areas.
Before construction can take place the soil needs to be compacted using heavy machinery.
When a home site is established the building foundation is outlined with formwork ready for pouring of the concrete slab. This is the key area where things can influence as to if the property will get cracking to the outside walls.
The builder uses small compacting machinery to compress the soil which is generally operated by hand. If the compaction is not equal on all areas of the building footprint, weak spots will be established for future soil depression to take place.
The most common areas for this to happen are the corners of the building mainly because adequate attention has not been applied in this area.
You will find that the majority of building cracks will be located within 10 feet of the building corner. The cracks will appear stepped in nature as they are following the weakest route being the mortar joints between the blocks. At this stage depending on the severity of the cracks there is very little that can be done to prevent this apart from making the cracks water tight with sealant. The cracks will continue until the ground beneath has settled.
Correct supervision is required at the very first stage of the construction to ensure cracking will not appear at a later date.
For a more detailed account of this problem with full diagrams illustrating the process, review the article Settlement Cracks Explained on my web site and feel free to contact me at any time for further advice.
I look forward to assisting you with your enquiries and helping you find your future investment. My web site is www.homeinspectionforyou.com http://www.homeinspectionforyou.com/settlement_cracks.html
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