English to Spanish Tech/Engineering Architecture

Building structures are typically built by lifting relatively small components from ground level and fixing them above previously placed components. However, substantial time and cost savings are often achieved by using methods that are more systematic than is typical. Some of these methods assemble more components near ground level. The components are then lifted as relatively complete assemblies to final positions. One such method, commonly referred to as the “lift slab method”, is constructed by forming concrete slabs in a stack near ground level. Using this method, each slab is threaded through columns, and the slabs are lifted with column-mounted jacks to final spaced-apart positions. Most known lift-slab methods have limitations and drawbacks. They include high cost, complexity, unreliability and unsuitability to a variety of building forms.

http://www.mic.hawaii.edu/dev_tech/engineer/braced.html