A residential foundation in Hawaii requires design for volcanic ash soil with a bearing capacity of 1,500 psf. If a column load is 45,000 lbs, what minimum footing area is required?
Correct Answer
C) 30 square feet
Required area = Load ÷ Bearing capacity = 45,000 lbs ÷ 1,500 psf = 30 square feet.
Why This Is the Correct Answer
Required area = Load ÷ Bearing capacity = 45,000 lbs ÷ 1,500 psf = 30 square feet.
More hi-trade Questions
A concrete mix design for coastal construction specifies a water-cement ratio of 0.40. If 650 lbs of cement is used per cubic yard, how many gallons of water should be added?
A contractor is installing hurricane straps rated at 1,500 pounds each. If the calculated uplift force on a rafter is 3,200 pounds, how many straps are required with a 2.0 safety factor?
Hawaii Building Code requires special inspection for concrete placement in seismic design categories. What is the minimum frequency for concrete strength testing?
What is the maximum allowable deflection for roof rafters under design wind loads in Hawaii's hurricane zones?
Which roofing attachment method is specifically required in Hawaii's hurricane zones for asphalt shingles on residential construction?
A building in Maui requires hurricane straps rated for 175 mph winds. If each strap must resist 1,200 lbs of uplift force and you have 48 roof-to-wall connections, what is the total uplift resistance provided?
During construction of a beachfront property, you notice white crystalline deposits forming on the concrete surface. This indicates:
You discover expansive clay soil conditions during excavation for a residential foundation in Kona. The plasticity index is 28. What foundation system is most appropriate?
According to Hawaii building requirements, hurricane straps connecting roof trusses to wall plates must be rated for what minimum uplift force in high wind zones?
A concrete slab foundation in Hawaii requires a vapor barrier. Due to high humidity and frequent rainfall, what type of vapor barrier is most appropriate?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass
Related Study Resources
Previous Question
In Hawaii's coastal environment, what is the primary reason concrete structures require specific chloride ion protection measures?
Next Question
A residential foundation is being constructed on volcanic ash soil with a bearing capacity of 1,500 psf. If a continuous footing must support a load of 4,200 pounds per linear foot, what is the minimum required footing width?