One gable roof building of 75.6° roof pitch was tested to investigate wind pressure distribution over gable roof and walls. The effect of test configuration that whether the test structure was enclosed or partially enclosed on wall pressures, roof and internal pressures was also tested. The test structure was located along the west runway of Reese Technology Center adjacent to the WISE field laboratory. In this test, a Hercules C-130 aircraft was used to generate simulated wind events. Test structure experienced C-130 generated flows and natural wind. The result in this full-scale test is compared with ASCE 7-02 using main wind-force resisting system Cp's and Component & cladding Cp's. Also Marshall's work (1977) in term of mean pressure coefficients is compared with present experiments.