SLUMP TEST

AIM To study the workability (determine the consistency) of prepared concrete either in the laboratory or laboratory or during the progress of work in the field and to check the uniformity of concrete from batch to batch. APPARATUS Mould for slump test, non porous base plate, measuring scale, temping rod. The mould for the test is in the form of the frustum of...

Read More

COMPRESSIVE STRENGTH OF CONCRETE CUBES

Compressive strength of concrete: Out of many test applied to the concrete, this is the utmost important which gives an idea about all the characteristics of concrete. By this single test one judge that whether Concreting has been done properly or not. For cube test two types of specimens either cubes of 15 cm X 15 cm X 15 cm or 10cm X 10 cm x 10 cm depending upon the size of aggregate are used. For most of the works cubical moulds of size 15 cm...

Read More

D^2 / 162

for 1 m length steel rodI ts volume V =(Pi/4)*Dia x Dia X L=(3.14/4)x D x D X 1 (for 1 m length)Density of Steel=7850 kg/ cub meterWeight = Volume x Density=(3.14/4)x D x D X 1 x7850 (if D is in mm )So = ((3.14/4)x D x D X 1 x7850)/(1000x1000)= DxD/162.27&nb...

Read More

CONSTRUCTION ERRORS DURING CONCRETING AT SITE

Construction errors during concreting at site may occur due to failure to follow specified procedures and good practice or outright carelessness. Most of these errors may not lead to failure or deterioration of concrete, but they may have adverse impact on the structure with time. The construction errors which are likely to occur at site with preventive measures of them...

Read More

QUANTITY & RATE ANALYSIS FOR REINFORCED CONCRETE

Today we will see how to prepare rate analysis for Reinforced Concrete (RCC) work. First step to rate analysis is the estimation of labour, materials, equipments and miscellaneous items for particular quantity of reinforced concrete. The second step is to determine the component of structure for which the RCC rate analysis is required, as the quantity of reinforcement steel...

Read More