Civil Engineering Knowledge for All

                             Mass concrete is defined as "any volume of concrete with dimensions large enough to require that measures be taken to cope with the generation of heat from hydration of cement and attendant volume change to minimize cracking." [ ( ACI Committee 207–Mass and Thermally Controlled Concrete ) Mass concreting can result in high temperatures in concrete core during hydration process. Which can result thermal cracking of concrete in a severe way. Basically the temperature variance (in different locations of the concreted element) or the temperature gradient will cause the thermal cracking.

Ground vibration monitoring using a  Geo-phone Ground borne vibration  is a technical term basically used to describe mostly man-made  vibrations  of the ground, in contrast to natural vibrations of the Earth studied by  seismology . Vibrations caused by mining, blasting activities, construction works (in foundation work and heavy machinery movement), railway and road traffic, machinery and plants operating in industries, etc. are falling under this category. It was recognized that, though the manmade ground vibrations can be severe and damaging, the levels of the ground strain involved usually much smaller than those associated with the strong motion of earthquakes.  A considerable ground born vibration induces during the construction work. And becomes annoying for the neighboring communities. Hence the governments and the different engineering or policy making bodies of countries around world has introduce and certain limits for ground borne vib...

Boring Record in Bored Cast In-situ Piling  Boring record is use for the recording of data during pile boring/ drilling process. Normally the recording starts from the initial setting out for temporary/ permanent casing installation based on the design coordinates of pile in layout. Start time, end time, duration, penetration rate, tools used, soil/ rock type, sample numbers, etc. are recorded in the data sheet for engineer review, by the Drilling Rig operator/ helper or by the supervisory staff. Details recording until the cleaning process of the pile bore using a cleaning bucket. A Sample boring record sheet is shown below. Company Name    and/ or    Company Logo   PILING WORK FOR PROPOSED ………………………………(Project Name/ Details) PILING WORK CONTRACT NO :                          ...

Main elements of a bored piling installation process Preliminary survey & setting out of pile point using coordinates (using Total Station) Driving temporary steel casing Pile boring (soil/ rock boring) Preparation of the reinforcement cage Cleaning or flushing pile toe Concreting Bored Pile Temporary c asing extraction  Pile Hacking Testing of Pile

Monthly Progress Report In Construction projects, Contractor needs to submit a Monthly Progress Report to the Engineer with the Work progress well describe. Normally a monthly progress report will consist of the project details, physical work progress, financial progress, resource availability, other concerns related to project progress, photos to prove monthly work done, etc. The planning engineer/ quantity surveyor of the project is preparing the report under the guidance of the project manager. Monthly progress report will be the basis for the evaluation of monthly payment certificates in general. A Sample Monthly Progress report is given below.