71.   Sometimes structural problems emerge that engineers never even imagined happening in any scenario.

72.   Structural problems, ranging from falling real estate prices to excessive payrolls, are hindering growth.

73.   Still, there is general agreement that there were both structural problems and a panic, even if there is a critical dispute about their relative importance.

74.   Studies of athletes who die of cardiovascular reasons during exercise have generally shown that younger athletes tend to die from structural problems of the heart, cardiologists said Tuesday.

75.   Still, other structural problems continue to suggest the yen will remain weak, fund managers said.

76.   Such problems might include roofs that leak, basements that flood, inadequate electrical service, defects in mechanical systems and structural problems.

77.   The bill would have essentially expanded a system now in use that allows landlords to hire architects or engineers to verify that some structural problems have been corrected.

78.   The building had a long history of housing-code violations, many serious, but no record of structural problems, city officials said.

79.   The bulk of the work, however, was addressed to invisibly correcting structural problems and repairing the damage already done.

80.   The deadline might be extended in cases where homeowners discover new damage -- such as hidden structural problems or asbestos contamination.