HOW TO CALCULATE SAFE BEARING CAPACITY OF SOIL ON SITE?
This simple and quick field test will give you a rough idea of bearing capacity of soil.
程序
- 挖掘所需深度的坑。（最好等于基础深度）
- 取一个已知重量和尺寸的实心球或平方立方体。
- Drop the ball or square cube several times, from a known height on to the bottom surface of excavated pit.
- Calculate the average depth of impression made several times on the bottom surface of the excavated pit. Let “d” is the average depth of impression.
Calculation
Calculate the ultimate resistance of soil ( R ) using the formula given below.
R = (w * h) / d
在哪里，
R = Ultimate resistance of soil (in kg)
d = Average depth of impression (in cm)
w = Weight of the solid ball or square cube (in kg)
h = Height of fall of solid ball or cube (in cm)
If “A” is the cross-sectional area of the solid steel ball or cube, then resistance of soil per unit area is calculated using following formula.
Resistance of soil per unit area (in kg/cm2）= r / a
Safe bearing capacity (in kg/cm2）= r /（a * f.o.s）
在哪里，
F.O.S = Factor of safety
记住笔记
- F.O.S根据结构和现场条件的类型从2到3不等。
- 为了获得可靠的测试结果，请对不同类型的土壤进行此测试，然后使用您的判断来达成任何结论。
- Instead of using solid steel ball or square cube, we can also useCBR test柱塞或锥（用于锥体渗透测试）
推定轴承能力
The table given below shows the presumptive bearing capacity values for different types of soils. This table will guide you to reach at any conclusion after conducting the test.
| 土壤 /岩石类型 | Safe / Allowable Bearing Capacity (kg/cm2） |
| Rock | 32.40 |
| 软岩 | 4.40 |
| 粗砂 | 4.40 |
| Medium sand | 2。45 |
| 细沙 | 4.40 |
| Soft shell / Stiff clay | 1.00 |
| 软粘土 | 1.00 |
| Very soft clay | 0。50 |
记住笔记
- For non-cohesive soils the values should be reduced by 50% if the water table is above or near base of footing.
- These values should be used only for preliminary design. The actual bearing capacity of soil should be calculated as per the standard codes.
Also Read: How to Calculate Bearing Capacity of Soil From Plate Load Test
你能帮我理解这一点：
在迈阿密，基岩是石灰石，但高度多孔。根据另一表上的图表，（一般而言）的安全负载能力为16.5 kg/cm2。因此，如果我挖到基岩建造摩天大楼，假设足迹约为50m x 60m，则乘以建筑物的最大重量约为495m千克。新利18体育官网登录那应该大约有50-60个故事，新利18体育官网登录否则基岩不会支持重量。
我是否正确理解了这一点，这是迈阿密没有超级高架摩天大楼的原因吗？
Is there a way to amend the footing to increase the load capacity?
why bearing capacity of soils effects the design and construction of a building?
p砖柱450 ms 200 k / ns公司的施加一个力luding the mass of the pier. calculate the pressure per metre square on brick pier and the minimum area foundation required if the oil has a bearing capacity of 150k/N per square metre
please sir. I want to know whether safe bearing capacity and allowable bearing capacity are the same.
先生，美好的一天。我需要您的帮助，以解决geotech探索的LL，PI，水分含量，n的打击数量，n的打击数量，因为结果未陈述。请。太感谢了。如果您想看，我会有一个完整的结果。上帝保佑。
我对“ D”平均印象深度不明确。新利18体育官网登录你能解释一下吗？
我想看看您是否有答案。谢谢。
不清楚的是，您是否将对象几次放在同一地点或多次位于一个位置。一个暗示，可能是在单独的地方几个单独的滴水，您说：“计算底部表面几次的平均印象深度。”但是，如果不是完美的水平，那是几个单独的印象的平均值，还是一个印象的平均深度？
Seems like dropping a cube would be less accurate, if you can’t ensure that it would land perfectly flat each time. A corner would go in deeper than the whole surface.
先生，正常的干土轴承能力是什么？
我是Gervas Marco毕业生Eng。
亲爱的Suryakanta您好吗？
我正在建造一间住宅公寓，地块的大小为30’x30'，所以我如何计算轴承能力。
thanks a lot, it’s a great help… what will be a recommended size of the cube, if any
如何计算设置的梁起重机的地面轴承能力？
I am James, when I do this I found that I drop weight 2 times and 3 times are different depth of impact, how to use your formular to calculate the R?
谢谢你。
这是我一生中第一次进入土壤测试主题。您的明确解释。
We r doing core cutter test
For SBC we can core cutter test ?
So its a compacted soil or clay or gravel will need to give 45000kg/m2 then it’s a safe one for further procedure…
尊敬的先生：
I need to convert of unit for calculation of bearing capacity
轴承容量的单位为N/M^2
SBC of every state will be different or it will be same?And will u send me the list of SBC OF EVERY STATE ON MY EMAIL.
msyaser45@gmail.com。
thanks
In the equation the Area ‘A’ is best measured as the area of the impression in the soil.
尊敬的先生，
Please tell me how to calculate bearing pressure of soil if CBR is known.
Sir, I have a question related to IS 1888 for safe bearing capacity and settlement when the size of the plate is maximum 750 mm?
thanks
can any1 help in doing calulation for improvement of bearing capacity of soil using bamboo
try coconut fruit instead of square cube.
我想通过使用竹子来计算SBC的帮助
This topic is very interesting and clear to understand how to calculate the soil bearing so I’m very happy
I would like to know more about this article Sir can you help me?
如果校正后的SPT值为10.6，土壤的安全轴承能力是什么
My name is kasiraj and my profession is chartered engineer , I want to know The design of footing ,gradebeam and column by using excell spread sheet,can I get that above software
请我是一个建筑商，我想在结构设计和计算中非常重要。你能帮我吗
proccedure images
超级杜珀的想法
help me know how to select a good and viable foundation of a storeyed building
需要知道在R.C环梁下确定土壤压力的公式
网站更适合现场实践测试和知识
how to find foundation of house.
我该如何选择房屋的基础。