The complete guide to electrical insulation testing. In each series, two, three, or four mackintosh tests were repeated at very close proximity in plan less than 0. Longer time interval is required at certain specified loading stages. Correlation of jkr probe with undrained shear strength.
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. Test probe sensitivity by performing qrtpcr assays for each probe against serial dilutions of the matching standard template stock solution e. Soil investigation probe mackintosh by aila nas on prezi. 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. Carry out boring in soil whether cased or uncased rotary boring nw size. The jkr probe is a simple site investigation procedure that is relatively. The american society of testing and materials has developed a standard astm. The use of the mackintosh probe for site investigation in. The mackintosh probe test is a simple and economic testing method to gather preliminary data on sub surface conditions. 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. A 25 mm diameter and 60 degree cone screwed onto the lower rod was driven into ground by a 4. Dilute target templates until the ct or crossingthreshold value see below of the most dilute. This paper presents the capabilities of the mackintosh probe for the.
While probe 2 assist s teachers to determine a students reading level, the focus of attention should not simply be on a numerical outcome. The megger insulation tester is essentially a highrange resistance meter ohmmeter with a builtin directcurrent generator. Pdf the jkr probe test is a popular field test in malaysia, and is especially used in soft soil areas to determine bearing capacity. It is a very costefficient tool used to replace the time consuming conventional static load test in determination of pile capacity. An equation has been derived to relate the mackintosh m. It is a convenient method to use for any site inaccessible to conventional testing equipments. Plate bearing test plate load testing site testing. This lab is performed to determine bearing capacity of the soil to with stand the loading. Stepbystep procedure the following procedure is used to conduct the test.
To determine this a series of tests were carried out at each site. Repeatability of mackintosh probe results the repeatability of mackintosh probe results is an important consideration. The tool provides a very economical method of determining the. Such data maybe adequate for the designs of foundations for lightly loaded structures as this provides a very economic method of determining the. The mackintosh prospecting tool consists of rods which can be. Begin by attaching the remote scale guide if used to the. The purpose of this paper is to present the capability and limitations of this probe.
Rundawa teknik adalah produsen alat laboratorium teknik sipil untuk keperluan peralatan. The test procedure is described in the british standard standard penetration test spt 5272016 9 advantages disadvantages relatively quick and simple. The megger insulation tester is a small, portable instrument that gives you a direct reading of insulation resistance in ohms or megohms. Pdf correlation of jkr probe with undrained shear strength. It is a considerably faster and cheaper tool than boring equipment especially when the depth of exploration is moderate and the. No published correlation exists for the conversion of mackintosh probe results. The result obtained from the test provides a rough estimation of the strength of the soil layer at a point. There are many dynamic probe devices in the world, such as. Mackintosh probe test to be carried out at load test location center of plate at testing leve l before the test for calibration purpose. Dynamic probing can have an important role in geotechnical site investigation. However the correlation of undrained shear strength su and the jkr probe test is. Use of a perth sand penetrometer psp device to determine. We evaluated changes concerning pivotshift and lachman test and documented lysholm and tegneractivityscore pre and postoperatively. 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.
A user guide is available to download from the impact web site. 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. Jkr mackintosh probe the mackintosh probe is alightweight and portablepenetrometer. Soil investigation ikpkt jabatan kerajaan tempatan. For good insulation, the resistance usually reads in the megohm range. The time interval of each stage of loading should not less than 15 minute. The pivot shift remained positive, while the anterior drawer, documented by lachman test, could be reduced surgically. 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. 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. Four 4 common errors in conducting the probe mackintosh test. Objective machintosh probe test is carried out to determine the bearing capacity of soil. It is more important to utilise the strengths of this assessment. The mackintosh probe is a lightweight and portable penetrometer. 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.
This test is very useful to find out the bearing capacity of soil upto 18 meter. Probe 2 reading comprehension assessment probe 2 is an assessment resource that can help make these observations. Mackintosh probe prospecting kit sl015 impact test. 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. Mackintosh probe test is most widely used in situ test to measure the soil bearing capacity of different layers in terms of n value. 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. Obtain utility clearance prior to conducting any test 2. One of the most common types of probing is mackintosh probe.
In this study, we used one set of 15 mm diameter series mackintosh probe with the length of 1. The probe is unable to penetrate into medium strength soil and gravelly ground. The mackintosh probe is one of most widespread penetrometers in use in saudi arabia. Depth from existing ground level not exceeding 10m. Standard penetration test spt to investigate the ground properties at.
One set of mackintosh probe equipment was used to investigate the bearing capacity of the untreated peat soil. Bs sand replacement test sets, soil testing equipment. However, the objective of all probing is the same, namely to provide a profile of penetration resistance with. Mackintosh probe as an exploration tool springerlink. 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. Bearing capacity of stabilised tropical peat by deep.
Loading shall be applied in 3 cycles as shown in table 1. 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. Combining ideas and descriptions of the problems that have been. 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. Jkr mackintosh probe test foundtest drilling sdn bhd. This is a light dynamic test and the cone is drivendirectly into the soil by driving a hammer 5 kg. Results of jkr probe and mackintosh probe can be taken as equivalent. Mackintosh probe test is widely used to assess soil bearing capacity mainly on soft ground mvalue.
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