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Use Schmertmann’s method (1970). 3. A 5' x 5' footing is located at 4.5' depth in...
The total settlement for clay being the elastic settlement plus the primary consolidation settlement. 2. A...
The total settlement for clay being the elastic settlement
plus the primary consolidation settlement.
2. A foundation carrying 150 kips needs to be designed in New Jersey (frost depth 3 ft) for a FOS of 3. The founding soil is deep normally consolidated clay deposit with average Su value of 1100 psf, and saturated unit weight of 130 pcf and a moist unit weight of 110 pcf with water table at 3 ft depth. The laboratory tests performed on undisturbed...
1. A 3m x 3m square footing is constructed at a depth of 2m in a...
1. A 3m x 3m square footing is constructed at a depth of 2m in a 200m deep clay layer with following soil properties: Ysat 16.5kN/m3, Normally Consolidated Clay, eo- 0.65, Cc 0.25, us-0.5 and Es 6.0 MN/m2. If there is a 1,000kN structural load on the footing, calculate the consolidation settlement of the footing
A) Use phase diagrams to derive the relationship between; S, Co, co, e, P and P° [5] b) A footing...
a) Use phase diagrams to derive the relationship between; S, Co, co, e, P and P° [5] b) A footing is to be located 5ft below ground level, as shown in Figure 2 below. The base of the square footing is 8ft by 8ft and it exerts a total load of 240 tons, which includes column load, weight of footing, and weight of soil surcharge on the footing. Find the total expected primary consolidation settlement for the clay layer 115)...
A Compute the total load, Qq, in kips, using the Hansen equations, for a footing 4...
A Compute the total load, Qq, in kips, using the Hansen equations, for a footing 4 ft wide by 8 ft long founded on a stratum of sand. The vertical load is uniformly distributed; there is no horizontal load. The value of Dƒ is 3.5 ft, the water table is at the base of the footing, and the friction angle from the triaxial test is 30. For the sand above the base of the footing, the water content is 20%,...
1. (8 points) A 190-k column load is to be supported on a 10-ft square, 3-ft deep spread footing ...
1. (8 points) A 190-k column load is to be supported on a 10-ft square, 3-ft deep spread footing underlain by young, normally consolidated sandy soils. The results of a representative CPT sounding at this site are as follows: Depth (ft) 21.0-40.0 0.0-6.0 6.0-10.0 10.0-18.0 18.0-21.0 e (kg/em2 The groundwater table is at a depth of 12 ft; the unit weight of the soil is 124 Ib/t above the groundwater table and 130 lb/ft below. Using Schmertmann's method (not the...
You are evaluating the geotechnical characteristics of a Miami site for a proposed office buildin...
You are evaluating the geotechnical characteristics of a Miami site for a proposed office building. Subsurface investigation showed that the site consists of the following layers: (1) a 5-ft sandy laver with a unit weight of 100 pcf (2) a 10-ft silty sand layer with a saturated unit weight of 115 pcf. (3) a 20-ft saturated clay layer with a unit weight of 118 pef, void ratio of 0.85, and underlain by gravels. The site seemed to have strong potential...
HW#10 Given the following column loading and footing information, determine the size of a mat foundation...
HW#10 Given the following column loading and footing information, determine the size of a mat foundation shown below: I 15 Column Information: Column A: Live load = 40 kips, Dead load = 50 kips Column B: Live load = 80 kips, Dead load = 100 kips. Distance between two columns: 15 ft. W soil = 120 psf 24" I CA C. Footing information: Distance from column A to edge of footing: 1 ft. Allowable soil bearing capacity = 3000 psf...
help please A square footing is founded at 3-ft depth below ground surface as shown in...
help please
A square footing is founded at 3-ft depth below ground surface as shown in Fig1, The factored axial load acting on the square footing is 140 kips, Determine the size of the footing (B x B) if the Factor of Safety (F.S.) is 3.0. Ground surface ЗА B-? Silty Sand Fig.1 A 68-ft long pre-stressed concrete pile with square cross section (14 inch) is driven into the soil profile shown in Fig. 2. Compute the ultimate compressive load...
A 3 ft x 6.5 ft rectangular footing is to be embedded 2 ft into the...
A 3 ft x 6.5 ft rectangular footing is to be embedded 2 ft into the ground and will support a single centrally- located column with the following design loads: P- 50 k, M 80 ft-k (acts in long direction only). The underlying soil is a silty sand with c,-0, ф, 31°-Y-123 pcf, and a very deep GWT. Using a factor of safety of 2.5, determine if this design is acceptable for bearing capacity. Note: Use Vesic's bearing capacity factors
Problem 3 (40 PTs The square footing as shown is subjected to a service DL of...
Problem 3 (40 PTs The square footing as shown is subjected to a service DL of 375 kips and a service LL of 312 kips. The unit weight of concrete is 150 pcf and of soil is 100 pcf, fy 60ksi, fé-4 ksi. Determine 1. The effective depth of the footing (round it to the next 0.50 inch) 2. How many No. 8 rebar required for footing reinforcement each way. 22 in x 22 in Normal weightEdge column Concrete 5-0
The total settlement for clay being the elastic settlement
plus the primary consolidation settlement.
2. A foundation carrying 150 kips needs to be designed in New Jersey (frost depth 3 ft) for a FOS of 3. The founding soil is deep normally consolidated clay deposit with average Su value of 1100 psf, and saturated unit weight of 130 pcf and a moist unit weight of 110 pcf with water table at 3 ft depth. The laboratory tests performed on undisturbed...
1. A 3m x 3m square footing is constructed at a depth of 2m in a 200m deep clay layer with following soil properties: Ysat 16.5kN/m3, Normally Consolidated Clay, eo- 0.65, Cc 0.25, us-0.5 and Es 6.0 MN/m2. If there is a 1,000kN structural load on the footing, calculate the consolidation settlement of the footing
a) Use phase diagrams to derive the relationship between; S, Co, co, e, P and P° [5] b) A footing is to be located 5ft below ground level, as shown in Figure 2 below. The base of the square footing is 8ft by 8ft and it exerts a total load of 240 tons, which includes column load, weight of footing, and weight of soil surcharge on the footing. Find the total expected primary consolidation settlement for the clay layer 115)...
1. (8 points) A 190-k column load is to be supported on a 10-ft square, 3-ft deep spread footing underlain by young, normally consolidated sandy soils. The results of a representative CPT sounding at this site are as follows: Depth (ft) 21.0-40.0 0.0-6.0 6.0-10.0 10.0-18.0 18.0-21.0 e (kg/em2 The groundwater table is at a depth of 12 ft; the unit weight of the soil is 124 Ib/t above the groundwater table and 130 lb/ft below. Using Schmertmann's method (not the...
You are evaluating the geotechnical characteristics of a Miami site for a proposed office building. Subsurface investigation showed that the site consists of the following layers: (1) a 5-ft sandy laver with a unit weight of 100 pcf (2) a 10-ft silty sand layer with a saturated unit weight of 115 pcf. (3) a 20-ft saturated clay layer with a unit weight of 118 pef, void ratio of 0.85, and underlain by gravels. The site seemed to have strong potential...
HW#10 Given the following column loading and footing information, determine the size of a mat foundation shown below: I 15 Column Information: Column A: Live load = 40 kips, Dead load = 50 kips Column B: Live load = 80 kips, Dead load = 100 kips. Distance between two columns: 15 ft. W soil = 120 psf 24" I CA C. Footing information: Distance from column A to edge of footing: 1 ft. Allowable soil bearing capacity = 3000 psf...
help please
A square footing is founded at 3-ft depth below ground surface as shown in Fig1, The factored axial load acting on the square footing is 140 kips, Determine the size of the footing (B x B) if the Factor of Safety (F.S.) is 3.0. Ground surface ЗА B-? Silty Sand Fig.1 A 68-ft long pre-stressed concrete pile with square cross section (14 inch) is driven into the soil profile shown in Fig. 2. Compute the ultimate compressive load...
A 3 ft x 6.5 ft rectangular footing is to be embedded 2 ft into the ground and will support a single centrally- located column with the following design loads: P- 50 k, M 80 ft-k (acts in long direction only). The underlying soil is a silty sand with c,-0, ф, 31°-Y-123 pcf, and a very deep GWT. Using a factor of safety of 2.5, determine if this design is acceptable for bearing capacity. Note: Use Vesic's bearing capacity factors
Problem 3 (40 PTs The square footing as shown is subjected to a service DL of 375 kips and a service LL of 312 kips. The unit weight of concrete is 150 pcf and of soil is 100 pcf, fy 60ksi, fé-4 ksi. Determine 1. The effective depth of the footing (round it to the next 0.50 inch) 2. How many No. 8 rebar required for footing reinforcement each way. 22 in x 22 in Normal weightEdge column Concrete 5-0
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