The Frequency Of Various Tests

In the first stage of construction the first test shall be taken is the In-Situ Density test but I was a bit stock when the consultant asked about the frequency of compaction test of in-situ soil. I made a research immediately just within the contract project documents: specification, drawing, bill of quantity but most often it is written on the specification, sometimes it is also written in the General Specification on the structural drawing.

I would try to post some frequencies of different tests for newbies or for those who has years of experience already to bookmark this page as your reference. So that it will be very easy for you to find out and come back again on this post. Especially in the world of technologies today has huge difference from the past,  what I mean is if you have android mobile or tablet with you when you are at the site you can use it to browse this post and see immediately “The Frequency Of Test” that you need of.

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Here are the frequency of tests for soil.

S/NDescriptionAreaTest FrequencyQty. of test
1Soil
1.ACompaction testUnder FootingEvery 200 square meterOne
Under Wall FootingEvery 30 linear meterOne
Under Slab on GradeEvery 1000 square meterOne
1.BCBRBelow pavementEvery 5000 cubic meterOne sample
1.CProctor testSoil Stockpile Every new materialOne sample
1.DAtterberg Limit:
Liquid Limit
Plasticity Index
Plastic Limit
Soil StockpileEvery new materialOne sample
1.ESieve AnalysisSoil StockpileEvery new materialOne sample

thefrequencyoftestinquality.jpg

Here are the frequency of tests for steel reinforcement or rebar.

S/NDescriptionAreaTest FrequencyQty. of test
1Steel reinforcement
1.AChemical TestConcrete elementsEvery 100 ton 2 sample for each bar size
1.BMechanical TestConcrete elementsEvery 100 ton2 sample for each bar size

Here are the frequency of tests for concrete.

S/NDescriptionAreaTest FrequencyQty. of Test
1Concrete
1.ACompression TestFooting, Raft Foundation, Pile Foundationevery 100 cubic meter of concrete6 cubes (1 set)
Slab, Grade beamevery 50 cubic meter of concrete6 cubes (1 set)
Columnevery 30 cubic meter of concrete6 cubes (1 set)
1.BDurability:
RCP
Absorption Test
Permeability Test
FoundationBi-monthly or every 700 cubic meter3 cubes for RCP
3 cubes for Absorption
3 cubes for Permeability
2Concrete Masonry Unit - CMU
2.ACompression testExternal Walls and Internal partitionsEvery new supplier3 samples of CMU
2.BDimension checkExternal Walls and Internal partitionsEvery new supplier3 samples of CMU
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Here are the frequency of tests for Aggregate in a concrete batching plant.

S/NDescriptionTest FrequencyQty. of test
1Aggregate
1.AGradingEach two weeks or per 100 cubic meter whichever is more frequentOne
1.BMaterial FinesEach two weeks or per 100 cubic meter whichever is more frequentOne
1.CClay lumps and Friable ParticlesEach two weeks or per 100 cubic meter whichever is more frequentOne
1.DOrganic ImpuritiesEach month or 200 cubic meter whichever is more frequentOne
1.EWater absorptionEach month or 200 cubic meter whichever is more frequentOne
1.FSpecific gravityEach month or 200 cubic meter whichever is more frequentOne
1.GShell contentEach 2 months or per 100 cubic meterOne
1.HMoisture variation in sand by moisture meterDailyTwo

I am hoping that these frequencies of tests have helped the engineers in the number of test requirements for their respective project but as I noticed the frequency of tests may vary and depending on a specification of the project so the engineers should go through on their respective contract specification and verify the above frequencies but still these frequencies will serve you as a guide.

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