The complete guide to electrical insulation testing. Jkr mackintosh probe the mackintosh probe is alightweight and portablepenetrometer. The mackintosh prospecting tool consists of rods which can be. It is a very costefficient tool used to replace the time consuming conventional static load test in determination of pile capacity. Bearing capacity of stabilised tropical peat by deep. The megger insulation tester is essentially a highrange resistance meter ohmmeter with a builtin directcurrent generator. The use of the mackintosh probe for site investigation in. The electrical cone penetration test cpt consists of pushing a cone penetrometer using a series of push rods into the soil at a constant rate of penetration. Mackintosh probe test is widely used to assess soil bearing capacity mainly on soft ground mvalue. Repeatability of mackintosh probe results the repeatability of mackintosh probe results is an important consideration. Dilute target templates until the ct or crossingthreshold value see below of the most dilute. The mackintosh prospecting tool consists of rods which can be threaded together with barrel connectors and which are normally fitted with a driving point at their base, and a light handoperated driving hammer at their top. Mackintosh probe testing, which provides an indication of the density of a granular soil by recording the number of blows of a 10kg hammer falling over 500mm to drive a steel cone 300mm into the soil. The purpose of carrying out the mackintosh probe test is to achieve a reasonable accurate value of the soil bearing capacity at different location within the site.
The tool provides a very economical method of determining the. Rundawa teknik adalah produsen alat laboratorium teknik sipil untuk keperluan peralatan. It is a considerably faster and cheaper tool than boring equipment especially when the depth of exploration is moderate and the. Such data maybe adequate for the designs of foundations for lightly loaded structures as this provides a very economic method of determining the. Termination criteria blows 300mm maximum 400 blows 300mm recommended depth, 15 meters. Combining ideas and descriptions of the problems that have been. This lab is performed to determine bearing capacity of the soil to with stand the loading. The probe is unable to penetrate into medium strength soil and gravelly ground.
While probe 2 assist s teachers to determine a students reading level, the focus of attention should not simply be on a numerical outcome. A user guide is available to download from the impact web site. This is a light dynamic test and the cone is driven directly into the soil by driving a hammer 5 kg. Pdf correlation of jkr probe with undrained shear strength. This is a light dynamic test and the cone is drivendirectly into the soil by driving a hammer 5 kg. A 25 mm diameter and 60 degree cone screwed onto the lower rod was driven into ground by a 4. There are many dynamic probe devices in the world, such as.
To determine this a series of tests were carried out at each site. This test is very useful to find out the bearing capacity of soil upto 18 meter. Request pdf the use of the mackintosh probe for site investigation in soft soils dynamic probing can have an important role in geotechnical site investigation. The mackintosh probe is a lightweight and portable penetrometer. The mackintosh probe development was based on the principles stated by hvorslev 1948 for drive rods for sounding and sampling and recommended methods for static and dynamic sounding by european group subcommittee 1968.
One of the most common types of probing is mackintosh probe. This paper presents the capabilities of the mackintosh probe for the. Mackintosh probe test is most widely used in situ test to measure the soil bearing capacity of different layers in terms of n value. Soil investigation ikpkt jabatan kerajaan tempatan.
Mackintosh probe prospecting kit sl015 impact test. However, the objective of all probing is the same, namely to provide a profile of penetration resistance with. Probe machintosh tools hammer soil investigation probe mackintosh marking tools equipment of probe machintosh probe machintosh road 6pcs x 1 meter wrench penetration cone group members. One set of mackintosh probe equipment was used to investigate the bearing capacity of the untreated peat soil. The time interval of each stage of loading should not less than 15 minute. The test procedure is described in the british standard standard penetration test spt 5272016 9 advantages disadvantages relatively quick and simple. Longer time interval is required at certain specified loading stages.
Correlation of jkr probe with undrained shear strength. In this study, we used one set of 15 mm diameter series mackintosh probe with the length of 1. Bs sand replacement test sets, soil testing equipment. In each series, two, three, or four mackintosh tests were repeated at very close proximity in plan less than 0. Jkr probe created as equivalent to mackintosh probe as mackintosh probe is patented in the early days. Stepbystep procedure the following procedure is used to conduct the test. Soil investigation probe mackintosh by aila nas on prezi. It is more important to utilise the strengths of this assessment. Mackintosh probe as an exploration tool springerlink. However the correlation of undrained shear strength su and the jkr probe test is. Results of jkr probe and mackintosh probe can be taken as equivalent. The megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. It is a considerably faster and cheaper tool than boring equipment especially when the depth of exploration is moderate and the soils under investigation are soft or loose.
The mackintosh probe is one of most widespread penetrometers in use in saudi arabia. The american society of testing and materials has developed a standard astm. Dynamic probing can have an important role in geotechnical site investigation. The result obtained from the test provides a rough estimation of the strength of the soil layer at a point. The probe consists of a cased screwed onto the lower end of the rod. Carry out boring in soil whether cased or uncased rotary boring nw size. Pdf the jkr probe test is a popular field test in malaysia, and is especially used in soft soil areas to determine bearing capacity. Standard penetration test spt to investigate the ground properties at. For good insulation, the resistance usually reads in the megohm range. An equation has been derived to relate the mackintosh m.
We evaluated changes concerning pivotshift and lachman test and documented lysholm and tegneractivityscore pre and postoperatively. The purpose of this paper is to present the capability and limitations of this probe. Four 4 common errors in conducting the probe mackintosh test. The pivot shift remained positive, while the anterior drawer, documented by lachman test, could be reduced surgically. No published correlation exists for the conversion of mackintosh probe results. Probe 2 reading comprehension assessment probe 2 is an assessment resource that can help make these observations.
The verification of the degree of compaction can be determinate on site by a simple procedure consisting essentially in removing and weighing a part of compacted soil and replacing in the hole with sand by a simple apparatus recording the volume of sand and then calculating the density of the removed soil. Use of a perth sand penetrometer psp device to determine the engineering parameters of sands dissimilar layers and even thin strata using the observed variation in the penetration resistance. Probe mackintosh, moisture content, uitm seri iskandar, diploma in building, practical, students laboratory work. Obtain utility clearance prior to conducting any test 2. Begin by attaching the remote scale guide if used to the. Mackintosh probe test to be carried out at load test location center of plate at testing leve l before the test for calibration purpose. However, the objective of all probing is the same, namely to provide a profile of penetration resistance with depth, in order to give an assessment of the. Ritchellyana audrey yang 07dka17f2056 rubric 4 3 2 1 data data collected is.
Test probe sensitivity by performing qrtpcr assays for each probe against serial dilutions of the matching standard template stock solution e. Loading shall be applied in 3 cycles as shown in table 1. Mackintosh probe locations of mackintosh probe the purpose of mackintosh probe were carried out to get a significant indication of the subsoil in situ strength in residual soil weathering grade this test is more cheaper compared to borehole. Depth from existing ground level not exceeding 10m. Mackintosh probe test to be carried out at load test location center of plate attesting level before the test for calibration purpose. Use of a perth sand penetrometer psp device to determine. Plate bearing test plate load testing site testing. Jkr mackintosh probe test foundtest drilling sdn bhd. It is a considerablyfaster and cheaper tool than boringequipment especially when thedepth of exploration is moderate andthe soils under investigation are softor loose mackintosh probe which has 30. Objective machintosh probe test is carried out to determine the bearing capacity of soil. The jkr probe is a simple site investigation procedure that is relatively. The mackintosh probe test is a simple and economic testing method to gather preliminary data on sub surface conditions. It is a convenient method to use for any site inaccessible to conventional testing equipments.
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