Civil Engineering Technical Questions Answers - Ask a Civil Engineer - Recent questions in Geotechnical Engg.
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Powered by Question2Answertotal active thrust?
http://www.aboutcivil.org/answers/3819/total-active-thrust
Determine the total thrust and the point of its appliction for a retaining wall having height of 6 m ,unit weight of soil(backfill) is 20kn/m^2. Angle of internal friction is 16° .The top of soil is kevel with the top of wall horizonal. If the soil carries a udl of 4.5 kn/m^2.Earth Structureshttp://www.aboutcivil.org/answers/3819/total-active-thrustTue, 11 Apr 2017 03:20:00 +0000what is the standard procedure for doing a project on soil stabilization?
http://www.aboutcivil.org/answers/3793/what-standard-procedure-doing-project-soil-stabilization
Soil stabilization using plasticGeotechnical Engg.http://www.aboutcivil.org/answers/3793/what-standard-procedure-doing-project-soil-stabilizationSun, 22 Jan 2017 18:10:28 +0000Stability of Railway Embankment
http://www.aboutcivil.org/answers/3750/stability-of-railway-embankment
In the case of undrained shear strength analyze with a new embankment, do I need to consider the parameters of "undrained shear strength increase with ground level" and "the strength increase under embakment" ?<br />
<br />
How about in the case of an old embankment, with both using undrained shear strength and effective stress parameters?<br />
<br />
Thank you very much!Foundation Engineeringhttp://www.aboutcivil.org/answers/3750/stability-of-railway-embankmentThu, 06 Oct 2016 04:14:14 +0000What criteria is adopted to fix the surcharge in finding the maximum Relative Density using vibratory table method?
http://www.aboutcivil.org/answers/3741/criteria-adopted-surcharge-finding-relative-density-vibratory
Why, it is to be adopted the surcharge of 13.8 +/- 0.2 kPa for determining maximum relative density in vibratory table method as per ASTM D4253.18113? Can we increase this surcharge? What basis it is decided?Foundation Engineeringhttp://www.aboutcivil.org/answers/3741/criteria-adopted-surcharge-finding-relative-density-vibratoryWed, 14 Sep 2016 04:48:12 +0000Is there any recommended/suggested/required penetration rate for a miniature cone penetrometer? A 20mm/s is for a standard size of cone penetrometer, what about for miniature one?
http://www.aboutcivil.org/answers/3623/recommended-penetration-penetrometer-penetrometer-miniature
miniature cone penetrometer. 10mm in diameterFoundation Engineeringhttp://www.aboutcivil.org/answers/3623/recommended-penetration-penetrometer-penetrometer-miniatureTue, 26 Jul 2016 00:33:27 +0000Residual vs Peak shear strength
http://www.aboutcivil.org/answers/3600/residual-vs-peak-shear-strength
Hey guys, my question is:<br />
<br />
Should you use the residual shear strength or the peak shear strength to calculate the total shearing resistance of the soil when failure takes place along an assumed failure surface?<br />
<br />
I would assume it would depend on the amount of deformation of the soil. If failure is just taking place I'm guessing the soil has probably not deformed enough for it to reach residual strength, in which case it would be best to use peak strength? <br />
<br />
However, I'm guessing using residual strength is more conservative?<br />
<br />
Thanks!Earth Structureshttp://www.aboutcivil.org/answers/3600/residual-vs-peak-shear-strengthFri, 13 May 2016 10:00:06 +0000Lift design for geotechnical engineering.
http://www.aboutcivil.org/answers/3516/lift-design-for-geotechnical-engineering
I need to propose a way of building a lift well, and I need to ensure that I achieve Geotech stability, both during and after construction. This means telling the structural engineer what he needs to achieve in the structural detailing (eg, the loads he has to design for, expected structural actions and what assumptions you have made.<br />
Are there any resources for this or how to attack this in a specification?<br />
<br />
Cheers,<br />
<br />
rockerockGeotechnical Engg.http://www.aboutcivil.org/answers/3516/lift-design-for-geotechnical-engineeringSun, 11 Oct 2015 02:16:47 +0000what are the diffrent types of foundations?
http://www.aboutcivil.org/answers/2274/what-are-the-diffrent-types-of-foundations
what are the different types of foundations?Foundation Engineeringhttp://www.aboutcivil.org/answers/2274/what-are-the-diffrent-types-of-foundationsFri, 21 Aug 2015 07:30:15 +0000can you explain the newmark's chart for stress distribution?
http://www.aboutcivil.org/answers/2236/can-you-explain-the-newmarks-chart-for-stress-distribution
can you explain the newmark's chart for stress distribution?Foundation Engineeringhttp://www.aboutcivil.org/answers/2236/can-you-explain-the-newmarks-chart-for-stress-distributionFri, 21 Aug 2015 04:22:48 +0000what is geotechnical
http://www.aboutcivil.org/answers/2145/what-is-geotechnical
what is geotechnicalGeotechnical Engg.http://www.aboutcivil.org/answers/2145/what-is-geotechnicalThu, 20 Aug 2015 07:26:57 +0000whats is the purpose of hook of foundation footings in a 2 story house?
http://www.aboutcivil.org/answers/2138/whats-is-the-purpose-of-hook-foundation-footings-story-house
whats is the purpose of hook of foundation footings in a 2 story house?Foundation Engineeringhttp://www.aboutcivil.org/answers/2138/whats-is-the-purpose-of-hook-foundation-footings-story-houseThu, 20 Aug 2015 07:22:29 +0000define the term foundation
http://www.aboutcivil.org/answers/2121/define-the-term-foundation
define the term foundationFoundation Engineeringhttp://www.aboutcivil.org/answers/2121/define-the-term-foundationThu, 20 Aug 2015 05:21:31 +0000how the foundations are possible in water bodies
http://www.aboutcivil.org/answers/2100/how-the-foundations-are-possible-in-water-bodies
how the foundations are possible in water bodiesFoundation Engineeringhttp://www.aboutcivil.org/answers/2100/how-the-foundations-are-possible-in-water-bodiesThu, 20 Aug 2015 04:49:26 +0000Do you know of any references for the expected post compaction settlement of compacted fills placed to substantial depth.
http://www.aboutcivil.org/answers/2085/references-compaction-settlement-compacted-substantial
Do you know of any references for the expected post compaction settlement of compacted fills placed to substantial depth.Earth Structureshttp://www.aboutcivil.org/answers/2085/references-compaction-settlement-compacted-substantialThu, 20 Aug 2015 04:35:40 +0000settlement of deep compacted fills
http://www.aboutcivil.org/answers/2084/settlement-of-deep-compacted-fills
settlement of deep compacted fillsFoundation Engineeringhttp://www.aboutcivil.org/answers/2084/settlement-of-deep-compacted-fillsThu, 20 Aug 2015 04:34:40 +0000What is difference between column and pier?
http://www.aboutcivil.org/answers/1965/what-is-difference-between-column-and-pier
What is difference between column and pier?Foundation Engineeringhttp://www.aboutcivil.org/answers/1965/what-is-difference-between-column-and-pierMon, 17 Aug 2015 09:03:38 +0000What is minimizing settlement
http://www.aboutcivil.org/answers/1959/what-is-minimizing-settlement
What is minimizing settlementFoundation Engineeringhttp://www.aboutcivil.org/answers/1959/what-is-minimizing-settlementMon, 17 Aug 2015 09:00:22 +0000Build a whole facility on gravel instead of concrete or cement.
http://www.aboutcivil.org/answers/1956/build-whole-facility-on-gravel-instead-of-concrete-or-cement
I am going to build an oily water treatment facility on gravel. There will be 500 bbl horizontal tanks, a centrifuge skids and some other skids. We selected the equipment according to how well the loads are spread on the surface. <br />
Our cross section will be: a plastic geoliner, a geotextile, sand, limestone and crushed sand, on top of that there will be a plastic berm with 2-5'' walls, and individual berms for around each tanks and skid. My problem with the berms is that they can get slippery when it rains. DO you know any best configuration than that??? I'm desperate with this case :(Foundation Engineeringhttp://www.aboutcivil.org/answers/1956/build-whole-facility-on-gravel-instead-of-concrete-or-cementMon, 17 Aug 2015 08:58:59 +0000what is the Pile foundation
http://www.aboutcivil.org/answers/1920/what-is-the-pile-foundation
what is the Pile foundationFoundation Engineeringhttp://www.aboutcivil.org/answers/1920/what-is-the-pile-foundationMon, 17 Aug 2015 07:30:51 +0000How would the effect of compression reinforcement be measured in RC raft foundation? Suggest method of analysis?
http://www.aboutcivil.org/answers/1857/compression-reinforcement-measured-foundation-analysis
How would the effect of compression reinforcement be measured in RC raft foundation? Suggest method of analysis?Foundation Engineeringhttp://www.aboutcivil.org/answers/1857/compression-reinforcement-measured-foundation-analysisWed, 12 Aug 2015 04:22:48 +0000calculation for annular raft foundation
http://www.aboutcivil.org/answers/1839/calculation-for-annular-raft-foundation
design method for annular foundation calculation for annular raft foundationFoundation Engineeringhttp://www.aboutcivil.org/answers/1839/calculation-for-annular-raft-foundationWed, 12 Aug 2015 04:11:21 +0000what is isolated foundation
http://www.aboutcivil.org/answers/1828/what-is-isolated-foundation
Describe isolated foundationFoundation Engineeringhttp://www.aboutcivil.org/answers/1828/what-is-isolated-foundationWed, 12 Aug 2015 04:03:49 +0000Can an RC plinth foundation supported by piles deflect at a specific area, with no crack sign on the surface ?
http://www.aboutcivil.org/answers/1795/plinth-foundation-supported-piles-deflect-specific-surface
6500mmx12000x1000mm thick reinforced concrete plinth with embedded I beam x2 supported by piles(875mm apart) beneath plinth; plinth is 20mm seal joint apart with surrounding area. area surround where I beam254x254x73kg/mUC deflection inside plinth=deflection also outside plinth AROUND the 20mm seal joint =5 arc second, why?what are the possibilities? Other places INSIDE plinth, deflection=0 or 1arc second ??; loading =20-30 tonne. Outside plinth less piles density.<br />
Loading along I beam axis. How to prevent deflection? measurement taken from niveltronic 0.01mm/m, Can licensed surveyor confirm this? What are the possible solutions? aren't all readings the same?why is there variation on the same plane( plinth)???Foundation Engineeringhttp://www.aboutcivil.org/answers/1795/plinth-foundation-supported-piles-deflect-specific-surfaceTue, 11 Aug 2015 07:33:28 +0000what is the minimum dia of reinforcement used for pile foundation for bridge?
http://www.aboutcivil.org/answers/1765/what-the-minimum-reinforcement-used-pile-foundation-bridge
what is the minimum dia of reinforcement used for pile foundation for bridge?Foundation Engineeringhttp://www.aboutcivil.org/answers/1765/what-the-minimum-reinforcement-used-pile-foundation-bridgeTue, 11 Aug 2015 05:42:38 +0000what is foundation beam and tie beam?
http://www.aboutcivil.org/answers/1710/what-is-foundation-beam-and-tie-beam
what is foundation beam and tie beam?Foundation Engineeringhttp://www.aboutcivil.org/answers/1710/what-is-foundation-beam-and-tie-beamMon, 10 Aug 2015 03:45:45 +0000what is the soil bearing capacity of Hyderabad, India?
http://www.aboutcivil.org/answers/1695/what-is-the-soil-bearing-capacity-of-hyderabad-india
what is the soil bearing capacity of Hyderabad, India?Foundation Engineeringhttp://www.aboutcivil.org/answers/1695/what-is-the-soil-bearing-capacity-of-hyderabad-indiaMon, 10 Aug 2015 03:15:28 +0000What is the difference between absorption & adsorption and sorption?
http://www.aboutcivil.org/answers/1679/what-the-difference-between-absorption-adsorption-sorption
What is the difference between absorption & adsorption and sorption?Foundation Engineeringhttp://www.aboutcivil.org/answers/1679/what-the-difference-between-absorption-adsorption-sorptionFri, 07 Aug 2015 04:38:20 +0000what are the depth of foundation
http://www.aboutcivil.org/answers/1605/what-are-the-depth-of-foundation
what are the depth of foundationFoundation Engineeringhttp://www.aboutcivil.org/answers/1605/what-are-the-depth-of-foundationThu, 06 Aug 2015 09:57:15 +00001 way shear in each column over a footing?
http://www.aboutcivil.org/answers/1573/1-way-shear-in-each-column-over-a-footing
4 rectangular columns carrying a big tank of a load 1000, directly over the footing.<br />
<br />
it is like...<br />
4 legs are like at 2 p.m, 4 p.m, 8 pm and 10 o clock position on a rectangular clock(footing)<br />
Each column has now load/4= 250<br />
<br />
footing is designed for full load 1000.<br />
<br />
Now the issue is about 1 way shear.<br />
<br />
all column are rectangular but aligned inclined with respect to any side of footing!!!<br />
<br />
If i consider section at 'd' from face of column,<br />
the punching shear area b0 X D is all different.<br />
<br />
Give me some idea of how to deal with this 1 way shear??pls:)Foundation Engineeringhttp://www.aboutcivil.org/answers/1573/1-way-shear-in-each-column-over-a-footingThu, 06 Aug 2015 09:39:20 +0000What is the difference between sand and soil?
http://www.aboutcivil.org/answers/1496/what-is-the-difference-between-sand-and-soil
What is the difference between sand and soil?Foundation Engineeringhttp://www.aboutcivil.org/answers/1496/what-is-the-difference-between-sand-and-soilWed, 05 Aug 2015 05:01:10 +0000Setting-out is a reverse operation in surveying. Discuss!
http://www.aboutcivil.org/answers/1450/setting-out-is-a-reverse-operation-in-surveying-discuss
Setting-out is a reverse operation in surveying. Discuss!Foundation Engineeringhttp://www.aboutcivil.org/answers/1450/setting-out-is-a-reverse-operation-in-surveying-discussTue, 04 Aug 2015 08:02:18 +0000whether meyerhof's method to find the lateral load carrying capacity of piles applicable to clay
http://www.aboutcivil.org/answers/1449/whether-meyerhofs-method-lateral-carrying-capacity-applicable
whether meyerhof's method to find the lateral load carrying capacity of piles applicable to clayFoundation Engineeringhttp://www.aboutcivil.org/answers/1449/whether-meyerhofs-method-lateral-carrying-capacity-applicableTue, 04 Aug 2015 08:00:38 +0000analytical solution to lateral load capacity of piles in clay
http://www.aboutcivil.org/answers/1448/analytical-solution-to-lateral-load-capacity-of-piles-clay
analytical solution to lateral load capacity of piles in clayFoundation Engineeringhttp://www.aboutcivil.org/answers/1448/analytical-solution-to-lateral-load-capacity-of-piles-clayTue, 04 Aug 2015 07:58:43 +0000explanation of how making foundations under water is made possible.
http://www.aboutcivil.org/answers/1351/explanation-making-foundations-under-water-made-possible
explanation of how making foundations under water is made possible.Foundation Engineeringhttp://www.aboutcivil.org/answers/1351/explanation-making-foundations-under-water-made-possibleMon, 03 Aug 2015 09:02:19 +0000pls the diagram ten types of foundation?
http://www.aboutcivil.org/answers/1244/pls-the-diagram-ten-types-of-foundation
ten types of foundations and their diagramFoundation Engineeringhttp://www.aboutcivil.org/answers/1244/pls-the-diagram-ten-types-of-foundationFri, 31 Jul 2015 08:54:23 +0000what is the deflection pattern of soil nailing and reinforced earth wall
http://www.aboutcivil.org/answers/1133/what-deflection-pattern-soil-nailing-reinforced-earth-wall
what is the deflection pattern of soil nailing and reinforced earth wallFoundation Engineeringhttp://www.aboutcivil.org/answers/1133/what-deflection-pattern-soil-nailing-reinforced-earth-wallThu, 30 Jul 2015 08:44:46 +0000I'm making a research based on secondary sources about bore pile
http://www.aboutcivil.org/answers/1114/im-making-research-based-secondary-sources-about-bore-pile
but the unique thing is the bore pile using only half reinforcement for each pile (the other half space below filled with usual normal concrete mixture) e.g: the depth is 30m, but the reinforcement only 15m length and the other 15m filled with concrete without reinforcement.<br />
<br />
how do anyone suggest it? what can i include in my report to differ the normal bore pile with this half reinforcement bore pile? i mean with clear differences.Foundation Engineeringhttp://www.aboutcivil.org/answers/1114/im-making-research-based-secondary-sources-about-bore-pileThu, 30 Jul 2015 07:24:02 +0000what are the Advantages and disadvantages of GIS?
http://www.aboutcivil.org/answers/940/what-are-the-advantages-and-disadvantages-of-gis
what are the Advantages and disadvantages of GIS?Geotechnical Engg.http://www.aboutcivil.org/answers/940/what-are-the-advantages-and-disadvantages-of-gisWed, 29 Jul 2015 03:50:37 +0000drained and undrained behaviour of clay and sand
http://www.aboutcivil.org/answers/841/drained-and-undrained-behaviour-of-clay-and-sand
drained and undrained behaviour of clay and sandFoundation Engineeringhttp://www.aboutcivil.org/answers/841/drained-and-undrained-behaviour-of-clay-and-sandTue, 28 Jul 2015 03:52:06 +0000what is the foundation for 18 feet wide x 25 feet long concrete building 4 story high?
http://www.aboutcivil.org/answers/822/what-foundation-wide-feet-long-concrete-building-story-high
what is the foundation for 18 feet wide x 25 feet long concrete building 4 story high?Foundation Engineeringhttp://www.aboutcivil.org/answers/822/what-foundation-wide-feet-long-concrete-building-story-highMon, 27 Jul 2015 09:16:53 +0000can you tell me how to design a foundation for circular water tank.
http://www.aboutcivil.org/answers/788/can-you-tell-me-how-design-foundation-for-circular-water-tank
can you tell me how to design a foundation for circular water tank.Foundation Engineeringhttp://www.aboutcivil.org/answers/788/can-you-tell-me-how-design-foundation-for-circular-water-tankMon, 27 Jul 2015 08:42:13 +0000how i can calculate the foundation of clay area
http://www.aboutcivil.org/answers/738/how-i-can-calculate-the-foundation-of-clay-area
how i can calculate the foundation of clay areaFoundation Engineeringhttp://www.aboutcivil.org/answers/738/how-i-can-calculate-the-foundation-of-clay-areaMon, 27 Jul 2015 05:20:50 +0000what is geotechnical engineering and its job vacancy in Ethiopia. can i get job with this field. put your answer in percent.
http://www.aboutcivil.org/answers/696/geotechnical-engineering-vacancy-ethiopia-answer-percent
what is geotechnical engineering and its job vacancy in Ethiopia. can i get job with this field. put your answer in percent.Foundation Engineeringhttp://www.aboutcivil.org/answers/696/geotechnical-engineering-vacancy-ethiopia-answer-percentMon, 06 Jul 2015 07:49:38 +0000How many bore holes for determine the characteristic of soil is required in a 3 x 150MW power plant?
http://www.aboutcivil.org/answers/548/holes-determine-characteristic-required-150mw-power-plant
How many bore holes for determine the characteristic of soil is required in a 3 x 150MW power plant?Foundation Engineeringhttp://www.aboutcivil.org/answers/548/holes-determine-characteristic-required-150mw-power-plantFri, 03 Jul 2015 04:25:01 +0000what does select of foundation depend on ?' for example if under the foundation you get CL or CL-ML or ML soil types and water level is almost 10m-15 below NGC,
http://www.aboutcivil.org/answers/477/select-foundation-depend-example-foundation-almost-below
As Mr. Haseeb has answered to 'Which Type of foundations are commonly used' but I have another question near this question, ' what does select of foundation depend on ?' for example if under the foundation you get CL or CL-ML or ML soil types and water level is almost 10m-15 below NGC,Foundation Engineeringhttp://www.aboutcivil.org/answers/477/select-foundation-depend-example-foundation-almost-belowThu, 02 Jul 2015 04:54:09 +0000Which type of foundation are commonly used?
http://www.aboutcivil.org/answers/466/which-type-of-foundation-are-commonly-used
Which type of foundation are commonly used?Foundation Engineeringhttp://www.aboutcivil.org/answers/466/which-type-of-foundation-are-commonly-usedThu, 02 Jul 2015 04:40:59 +0000Need best way to divert ground water from the basement of a row house location in an urban city (hoboken,nj). Thank you.
http://www.aboutcivil.org/answers/454/divert-ground-water-basement-house-location-hoboken-thank
Need best way to divert ground water from the basement of a row house location in an urban city (hoboken,nj). Thank you.Foundation Engineeringhttp://www.aboutcivil.org/answers/454/divert-ground-water-basement-house-location-hoboken-thankThu, 02 Jul 2015 04:26:17 +0000We have 3 water detention ponds in our residential area.
http://www.aboutcivil.org/answers/452/we-have-3-water-detention-ponds-in-our-residential-area
We have 3 water detention ponds in our residential area.<br />
Some type of Willow trees have been allowed to grow on the water side of the dam near the exit pipes. They are not huge, but they are no longer saplings.<br />
I understand no trees should be on the dam. Do we cut them to the ground and risk their decaying roots creating a void in the dam, or do we leave them?<br />
What would be the best management practice?Foundation Engineeringhttp://www.aboutcivil.org/answers/452/we-have-3-water-detention-ponds-in-our-residential-areaThu, 02 Jul 2015 04:25:19 +0000what are the factors effecting the selection of foundation
http://www.aboutcivil.org/answers/442/what-are-the-factors-effecting-the-selection-of-foundation
what are the factors effecting the selection of foundationFoundation Engineeringhttp://www.aboutcivil.org/answers/442/what-are-the-factors-effecting-the-selection-of-foundationThu, 02 Jul 2015 04:16:16 +0000What are the materials required for compaction test?
http://www.aboutcivil.org/answers/435/what-are-the-materials-required-for-compaction-test
What are the materials required for compaction test? What apparatus and procedures are needed?Foundation Engineeringhttp://www.aboutcivil.org/answers/435/what-are-the-materials-required-for-compaction-testThu, 02 Jul 2015 04:11:10 +0000