QAQC in Construction

There are many types of Soil compaction tests which are performed on soil. Some of these are :- 1) The Sand Cone Method (FDT) One of the most common test to determine the field density of soil is the sand-cone method. But it has a major limitation that this test is not suitable for saturated and soft soils. The formula used are Volume of soil, ft 3  (m 3 )=[weight of sand filling hole, lb (kg)] /[ Density of sand, lb/ft 3  (kg/m 3 )] % Moisture = 100(weight of moist soil – weight of dry soil)/weight of dry soil Field density, lb/ft 3  (kg /m 3 )=weight of soil, lb (kg)/volume of soil, ft 3  (m 3 ) Dry density=field density/(1 + % moisture/100) % Compaction=100 (dry density)/max dry density Maximum density is found by plotting a density–moisture curve. 2) California Bearing Ratio (CBR) The California bearing ratio (CBR) is used as a determine the quality of strength of a soil under a pavement. It also measures the thickness of the pavement, its ba...

This procedure defines the requirements for documenting quality assurance activities at Organization locations and for preparing and submitting quarterly quality assurance reports that contain an overview of quality assurance activities that occurred in each quarter. Introduction to Quality Assurance Report? Quarters are based on period calendar periods Quarterly quality assurance reports shall be prepared by the Facility, resources, Laboratory, Inspection Manager or their designee on quality assurance activities at their assigned location and submitted to the Corporate Quality Assurance Department. Quarterly quality assurance reports are used by the quality assurance Department to oversee quality assurance activities at each location, assist locations as indicated, communicate any items of concern to the appropriate Area Manager, and prepare annual quality assurance Performance Status Reports. How to prepare Quality Assurance Report Format? The Facility, Laboratory, Inspec...

Quality engineers have a task that is solely dependent on the overall aesthetic and integrity of the product or project. The weight of their task is so enormous that handling them poorly or withholding training that they need in order to save cost would be a bad choice. Quality engineers need to be equipped with modern and up-to-date knowledge. As the construction industry continually expand nowadays, so must the standards and specifications alongside it. I remember one time there was a call from an HR asking if I had a “training certificate” of an international standard. I was lucky that I could answer “Yes!” Because at that time, I already have the training he was looking for. You can also reply with a “Yes,” if you are prepared. And in my opinion, this is the way  how a quality engineer could double his job offer  , because having the right training will definitely boost your career, in fact, it’s called a “career booster.” If you visit my  about me  page, y...

Achieving a proper concrete mix at the site is very difficult for a common man. Even for a Civil Engineer, it is very difficult to attain a good mix and a proper mix is very crucial for the durability and strength of the structure. Here are some very important points to check before going for a mix. These tips are aimed at laymen so I’m trying to use simple terms instead of technical terms. Materials selection Materials are to be properly tested in a lab and get approved by an engineer. If possible do a mix design by a Licence Holder Design Mix Engineer and do a strength test at 7, 28 days. Test for cement Finesse test Consistency test Soundness test Setting time These tests must be done at a lab and these tests are very simple. There are more tests for cement but not required for residential structures. Test for aggregates Abrasion test Crushing value Impact test for 10-12 mm aggregates Shape test Specific gravity and water absorption One set of each test for every 100 m3 of ma...