A contractor is building a home on a slope in volcanic cinder soil on Maui. The soil report indicates 30% slope. What additional foundation requirement must be met?
Correct Answer
B) Caisson foundations extending to bedrock
On slopes greater than 25% in volcanic cinder soil, Hawaii requires caisson foundations extending to competent bedrock due to instability of loose volcanic materials.
Why This Is the Correct Answer
On slopes greater than 25% in volcanic cinder soil, Hawaii requires caisson foundations extending to competent bedrock due to instability of loose volcanic materials.
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A roof system in Hilo experiences 180 mph wind speeds. The roof area is 1,800 sq ft with a shape factor of 1.3. If the base uplift pressure is 50 psf, what is the total design uplift force?
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