9.8 A plan calls for a square foundation measuring 3 m x 3 m supported by a layer of sand (see Figure 9.7). Let D, 1.5 m, t 0.25 m, E 16,000 kN/m2, k 400 kN/m2/m, , 0.3, H 20 m, E 15 X 10° kN/m2, and go- 150 kN/m2. Calculate the elastic settlement. Use Eq. (9.27).

Describe about the relationship between foundation settlements and soil conditions.

1. Calculate the outside perimeter of the wall shown in the figure below: 15' 3' W = 4' 9' 20 30' 3' 9' 10' 15' 18' 2. The width of the foundation wall shown in problem 1 is four feet. Calculate the volume of concrete required to build this foundation wall if its cross-sectional area is 6 sf. If the wall is two feet in height, what is the required formwork in sfca?

For each of the building properties listed below, identify which parameter from the base shear equations shall apply. Building occupancy and function Seismic Base Shear In accordance ASCE-7 code, buildings must be designed to withstand lateral forces that are generated during a severe earthquake. The minimum required design force is given in several equations. Design Base Shear, V= C, W Seismic response coefficient, C,, is the smaller value from two equations: In these equations: C₂ = C₂ < Sp! R Spy R Sor & Spare Seismic Acceleration Parameters from USGS maps is Importance Factor Tis Period of Vibration, (depends on building height & must be calculated) Ris Response Modification Factor from ASCE Table Wis the Effective Seismic Weight of the building. SD1 and SDs, seismic acceleration parameters R, response modification factor I, importance factor T, period None of these

You are assigned the foundation design of a 56'-0" inside diameter reinforced concrete process tank. Vertical walls are 1'-0" thick and 15 feet high, terminating at elevation 25.00. Bottom of wall is at elevation 10.00 and rests on the foundation slab. Exterior grade abutting the vertical tank walls is at elevation 22.00. The tank foundation slab is circular with a two foot extension all around the vertical tank exterior wall. Determine the minimum height of the foundational circular slab. For design purposes consider the groundwater to be saturated to sit grade. Determine the following: A) Buoyant force in pounds B) Minimum depth of foundation slab in feet

8765: civil engineers determine the appropriate depth of foundation for a building? Explain the concept of soil bearing capacity and its significance in foundation design. What factors influence the choice between shallow and deep foundations? Describe the process of soil stabilization and its importance in construction projects. How do civil engineers assess the risk of liquefaction in areas prone to earthquakes? Discuss the principles behind retaining wall design and their role in preventing soil erosion. Explain the concept of compaction in soil mechanics and its implications for construction quality control."