Using shipping containers as falsework, interesting idea. Since there seems to be no problem of getting approval from adjacent land owners, and there remains 4 to 5 meters of soil width to excavate near adjacent buildings, I think we will finally go for soil nailing. I guess, maybe, we can move...
Adjacent buildings have grid foundations of probably 1.2 to 1.6 meter grid width. They are based on between 1 to 1.5 meter below original grade.
Footprint size of the excavation is equel to construction site dimention, i.e. 70 meters x 100 meters.
Well, The first thing that comes to my mind is...
Hi,
A client of mine have asked me to suggest and design a retaining wall system for an 18 meter deep excavation next to a series of adjacent 5 to 6 story residential buildings alongside one edge of the excavation site. The problem is, almost 90 percent of excavation to the desired depth have...
Thank you EireChch for your kind advise and thanks for your detailed attachments. I will try to prepare a cross section of the slope like what you said.
There are a few things that we are sure about it: One, our crack pattern survey says that, the building is suffering some kind of active differential lateral movements down slope. Two, and I can't stress this enough, the building is built on top of a rockery layer built to level natural alluvial...
Okiryu, The 3 meter height retaining wall you mentioned, is a gravity wall built to retain fill layer in order to provide level platform around building for gardening. It does show minor deflection signs on near sidewalk as long cracks along the wall, but it is not more than 5 millimeters width...
No, the site is moving from left to right in those photos. At least our observation gouges on the building walls says so. I attached another plan view showing direction of building movements and camera point of view in those photos.
Consider that it seems that the top 2 to 3 meter fill layer...
EireChch, our observations of crack movements, shows movements of approximately 1 to 2 millimeter per year. The cracks are in almost all around the building but they are most intensive at the corner near down slope of the building, which is more steeper than other areas nearby (see crippled...
Thank you all for your kind reply, considering your comments on the subject matter, I must say:
oldestguy: According to observation pits that have been dug around the building, there is only minor traces of tree roots at top 2 to 3 meter of soil layers around the building, so I think the...
Hi, I'm working for a consulting engineering, responsible for designing restoration and retrofitting plans for a two story adobe masonry building of historical significance. The building is built upon an alluvial fan with more than 20 meters of horizontally bedded layers of gravel and sand...
Thank you all for your kind reply. Actually I was thinking of removing floor to depth of some 30 to 40 centimeters, building an aggregate drain right below floor which collects water in a well, allowing us to pump it away. But this is only applicable if the leakage is happening from floor. If...
Hi,
There is this project that we are working on right now, that has a serious seepage problem (see attached photo). It is an underpass structure which is not completely isolated when built, so water leaks from it's floor and possibly through the walls. The water table is 2 meters below ground...
Hi, I'm designing a soldier pile wall with raker support for a temporary 4m excavation in a medium dense silty sand (phi=30, c=0) using SAP2000 FEA software. The wide flange IPB section piles are to be buried in 1.0m height, 0.8m diameter cast in place reinforced piles below dredge line and the...
