The question as to when the proper time to apply the stressing force to the post tensioned cable in this type of reinforced foundation is of considerable interest. If you apply the stressing load too soon you have the danger of pulling cable anchorages out of the green concrete. If you wait too long [...]
Excavations are common on construction sites in the form of pits, trenches, and cuts adjacent to a hillside. Excavations are necessary for construction but can be dangerous. Stiff to hard clays seem very strong and will stand temporarily on vertical cuts for great depths. Clays [...]
Shrinkage cracks in concrete slab-on-ground foundations are a significant public relations problem to home builders. All concrete will shrink during the curing process which lasts up to a year after the time concrete is placed in the forms. Curing involves loss of water from within the concrete, [...]
When has a foundation or any other structural unit failed? There are three categories in which a structure could be placed with regard to structural performance:
Major distress and distortion
One of the more disagreeable features of construction concrete is its ability to generate cracks. Cracks are of several varieties. Some are very fine, almost invisible to the naked eye, some are large and ominous looking. There are two basic types of cracks; the first type is shrinkage related while [...]
If you would be interested in having MLAW Engineers present a one to two hour seminar on soils, foundations or structures, call (512) 835-7000. We can tailor our program content to your specific needs.