Structural engineers will examine the condition of the Recreation Building in downtown The Dalles after torrential rains that accompanied a large thunderstorm on August 9 exacerbated problems with a corner arch putting too much pressure on the rest of the building.  Todd Carpenter and Carla McQuade, who have been renovating the building as a recreation facility, gave a report to the Columbia Gateway Urban Renewal Agency board Tuesday night.  Concerns of a potential collapse led the City to close the north lane of East 2^nd in front of the building.  Carpenter says a support beam was split in several places, causing the arch to put downward pressure on the roof.  It was already a problem before the heavy rain on August 9 worsened the split.  Structural engineers will assess the building to determine what the next step should be.  URA attorney Gene Parker told the board the agency had insurance on the building.  Board chair Gary Grossman told Carpenter that once the structural assessment and insurance claims are known, the URA can then to determine what it can do to help.