Quiz: 2024 International Residential Code (IRC) Chapter 4 Foundations

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1. Under what condition is the use of wood foundations in Seismic Design Category D0, D1, or D2 permitted according to Section R401.1?

2. What is the minimum grade fall required for surface drainage away from foundation walls within the first 10 feet?

3. For a building located in Seismic Design Category C, when soil testing is performed, what additional information must the geotechnical report include according to Section R401.4?

4. According to Table R401.4.1(1), what is the presumptive load-bearing value for Silty sand, sand-silt mixtures (SM) material?

5. Which of the following soil groups, classified according to the Unified Soil Classification System, is described as having 'Poor' drainage characteristics and 'High' frost heave potential?

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