PROBLEM 11.3: A reinforced concrete slab consists of two equal spans, each with a clear span of 4.5m. The service live load is 4.8 kPa. Assume f = 27.6 MPa and fy 415MPa for all bars. Unit weight of concrete = is Y = 23.5 kN/m³. The slab is not exposed to earth or weather. Design the slab following provisions of NSCP 2015. Use 12mm for all bars.

when excavating，(Support preload) Different retaining walls, support axial force, subsidenceWhat are the possible reasons for the discrepancies in the quantitative analysis results?

Compare circular, square and I section piles in terms of usage, cost and advantages/disadvantages?

QUESTION 40 1. Transient analysis and limit stability analysis mean the same thing and thus can be used interchangeably. True False QUESTION 41 1. Tension cracks would usually occur first on the ground surface thus indicating the onset of slope instability. True False QUESTION 43 1. The retaining wall worked as a barrier against excessive groundwater loss and safeguarded the buildings located behind it. True False QUESTION 30 1. The sea water level causes the groundwater table to fluctuate on site. True False

A twenty-story hospital building with a 400 ft x 200 ft footprint is to be built on a site underlain by fill over glacial sands. The building will have a 25-ft deep basement and will probably be supported on either a mat foundation located 5 ft below the bottom of the basement, or a deep foundation extending about 100 ft below the bottom of the basement. The groundwater table is about 30 ft below the ground surface and bedrock is about 120 ft below the ground surface. There are no accessibility problems at this site. (a) How many exploratory borings will be required as per NYC Code, and to what depths should they be drilled? (b) How would you obtain groundwater data? Explain your answer.

What is “block failure” in a group of piles and how does it differ from individual failure?