Click below to access our NEW Estimating Tool! RESOURCES   Professional Affiliations MER Engineers is involved with a variety of professional organizations that keep us up-to-date with the latest changes and technological advances in the construction industry. ACI: American Concrete Institute - www.concrete.org AISC: American Institute of Steel Construction – www.aisc.org CRSI: Concrete Reinforcing Steel Institute – www.crsi.org ICBO: International Conference of Building Officials – www.iccsafe.org PCA: Portland Cement Association – www.cement.org SEA: Structural Engineers Association – www.seaint.org TCA: Tilt-up Concrete Association – www.tilt-up.org USGS: USGS seismic information – www.usgs.gov WOC: World of Concrete – www.worldofconcrete.com PCI: Precast Concrete Institute – www.pci.org ASCE: American Society of Civil Engineers – www.asce.org CASE: Council of American Structural Engineers – www.acec.org Tilt-Up Design Systems, LLC – www.tilt-werks.com