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thank you all for the answer, i am not a structural engineer. so i ask that question. as i know in field, generally the cold-joint of concrete columns located in encounters with beams and slabs. M.A.

If there are cold joints in the column (for example from different concrete pours at different times (next day)) and the cold joints are located in a half of column length. what would happen to that region? M.A.

hi all, i am beginner in down-hole seismic test, but now i involved in project part of down-hole/cross-hole seismic testing for shear wave velocity and compression wave velocity refer to ASTM D 7400-08. i need some reference recommended books related down-hole/cross-hole seismic testing, if...

for practical use i thought you need to read a book about geotechnical engineering, here's the recommended book for overview of geotechnical engineering : "an introduction to geotechnical engineering by Robert D Holtz & William D. Kovacs" and after that you can read the advanced book such us...

the normal practice in my regional about 10% of ammount piles, which that tested pile have discrepancy data or potential defect (such us necking or others), usually we compare the drilling/piling record and then we define the tested pile for PIT. M.A.

Hi all, we have been conduct axial compression static loading test on this pile without treatment, and the maximum settlement at 250% Design Load only about 18 mm (thats mean this pile actualy safe). but now we still have the question : 1. what is the really problem of CSL and PIT Test result...

hi all, kindly need your advise about this, i involved in superblock project (apartment and hotel 26 storey), soil profiles accross site describe as below (average soil boring consistent) : 0-1.5 m : clay (N-SPT 60 = 5) 1.5 - 40 m : sand (N-SPT > 60) our geotechnical team have been choosing to...

thanks all for your helpful input, for Thermal Test is it worth than CSL? what is the limitation of both of the test? M.A.

hi all, can anyone have experience regarding PIT interpretation as attached? is this data acquisition acceptable or not or its really defect at depth 4-5 m? thanks, M.A.

BigHarvey, thanks for comment, i have been discuss with owner to conduct PIT test to makesure the pile integrity have defect or not, since as second opinion from our geotechnical professional this test pile can't to conduct static loading test with load until 250%, because possible the pile...

hi all, i have problem with CSL test on test-pile with instrumented pile. but CSL test in this test pile indicated that pile has defect from depth 0-7 m (debonding)at all pair tube, and for tube pair 1-2 and 2-3 at depth 8-13.6 m (with remark 70% velocity reduction). can anyone give technical...

Dear All, kindly need your help, Whether the PDA result as attached is correct? since the velocity graph above of force graph. http://files.engineering.com/getfile.aspx?folder=6ab5f96e-3931-44af-bf99-7fd19544875c&file=TP-1.jpg thanks, M.A.

Hi all, i have question regarding HSDT/PDA test, ahs we know Bearing Capacity for using HSDT/PDA test have many of type Bearing Capacity, there are RMX, RSU, RAU ; could anyone can describe what and where is the difference of them (RSU, RMX, RAU)? M.A.

for code using ACI M.A.

hi all, i need your help, what is the recommended books for study of reinforced concrete and prestress concrete which using SI units for beginner to middle ya? M.A.

thanks a lot ntschwanz for your input, i will learn more to get clearly concept about this., M.A.

hi all, as we know LEM (limit Equilibrium Method) as one of ways to define SF on Slope Stability Analysis (Bishop, Janbu, Fellenius, Spencer, Sarma), and currently we also know FEM (Finite Element Method to define SF on Slope Stability Analyis, as my limited of experience about both of this...

thanks oldestguy for your helpful input, i just read ASTM related that test (D1143-81 for Axial Compression, D-3689-07 for Static Axial Tensile Load Test, and D3966-07 For Lateral test. thanks Mike, your comment very helpful, i just know that quick test or load test is also depend of soil type...

Hi All, i am begineer in pile testing, i have some question about axial, lateral and uplift load test, as i know, static load test often combination with instrumentation such strain gages, tell-tales extensometer, pile integrity thermal, and others. the purpose of instrumented test pile are to...

thanks all for the helpfull input and suggestion. M.A.