Building Materials River Sand vs Manufactured Sand 25 Oct 201823 Sep 2018 The natural river sand was the cheapest resources of sand. However the excessive mining of rive bed to meet the increasing demand for sand in construction industry has lead to…
Building Materials Manufactured Sand (M-Sand) in Construction | Advantages & Disadvantages 23 Oct 201823 Sep 2018 M-sand is “crushed aggregates produced from hard granite stone which is cubically shaped with grounded edges, washed and graded with consistency to be used as a substitute of river sand”. Advantages…
Aggregates Test Bulking of Sand Test 15 Oct 20182 Oct 2018 What is bulking of sand? Bulking of sand means increase in it's volume due to presence of surface moisture . The volume increases with increase in moisture content . The…
Aggregates Test Silt Content Test of Sand (Fine Aggregates) 13 Oct 20182 Oct 2018 AIM To find-out the silt content in sand (fine aggregates) Apparatus Measuring cylinder Measuring cylinder – 250ml Sand – Specimen Water Salt Solution Procedure The measuring cylinder should be free…
Building Materials… Why we can’t use sea sand in building construction? 11 Oct 201824 Sep 2018 We do not use use sea sand in construction due to following reasons Sea sand tends to very fine and rounded, Smooth rounded particles would offer less resistance to rearrangement…
Building Materials… Can desert sand be used in construction ? 9 Oct 201824 Sep 2018 Answer is both Yes and No. let's see we should not use desert sand in construction? Desert sand grains are finer and smoother so their surface chemistry would not be…
Highway Engineering What is tie bar in civil engineering 7 Oct 201823 Sep 2018 Tie bars Tie bars are deformed rebars or connectors used for holding faces of rigid slabs in contact to maintain aggregate interlock. Tie bars are not load transferring device. For…
Highway Engineering Difference between dowel bars and tie bars 5 Oct 201823 Sep 2018 Dowel bars Dowel bars are placed at the transverse joints of concrete pavement and they take part in partial wheel load transfer from one slab to its adjacent slab. The dowel…
Highway Engineering What is a dowel bar? | Purpose & Advantages. 3 Oct 201823 Sep 2018 Dowel bars are placed at the transverse joints of concrete pavement and they take part in partial wheel load transfer from one slab to its adjacent slab. The dowel bars also…
Building Materials… Difference between initial setting time and final setting time 1 Oct 20181 Oct 2018 INITIAL SETTING TIME The time period elapsing between the time, water is added to the cement and the time, the needle fails to pierce the test block by 5.0 ±…
Soil Mechanics Difference between Compaction and Consolidation of Soil 1 Oct 201819 Sep 2018 Consolidation and compaction are totally different process. Though both process results a reduction in volume, it is important to know the difference between them. DIFFERENCE BETWEEN COMPACTION AND CONSOLIDATION ARE…
Surveying Applications of levelling in surveying 29 Sep 201819 Sep 2018 WHAT IS LEVELLING? The art of determining relative altitudes of points on the surface of the earth of beneath the surface of earth is called LEVELLING. For execution of Engineering…
Earthquake Engineering Which regions of India are the deadliest and the safest from the natural disasters? 27 Sep 201819 Sep 2018 A natural disaster is a major adverse event resulting from natural processes of the Earth; examples include floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, and other geologic processes. India now…
Aggregates Test… Fine Aggregate Angularity Test 26 Sep 201825 Sep 2018 AIM The fine aggregate angularity test determines the loose uncompacted void content of a fine aggregate material. APPARATUS Cylindrical Measure, Funnel (Pycnometer Top), Funnel Stand, Square Glass Plate, Pan, Metal Spatula, Balance PROCEDURE (METHOD A) Obtain…
Earthquake Engineering Why are Himalayan regions prone to earthquakes? 25 Sep 201819 Sep 2018 Because Himalayan region lie along boundaries of the tectonic plates. Chief tectonic sub-regions of India are the mighty Himalayas along the north. The Himalayas consist primarily of sediments accumulated over…
Concrete technology Classification of concrete 23 Sep 201823 Sep 2018 Concrete can be classified as follows: Based on Cementing material Lime concrete Gypsum concrete Cement concrete Based on Place of casting In situ concrete precast concrete Based on Bulk density…
Civil Engineering What are the various diameters of the steel bars used in various structures 23 Sep 201823 Sep 2018 We use the same bars( which are available in the market) in all structures. we do not manufacture different bars for different structural elements. Diameter of the bar will vary…
Estimation and Costing… How do I calculate volume of 50 Kg cement bag? 21 Sep 201819 Sep 2018 The basic things you should know to calculate the volume of 1 bag of cement are, Density of cement = 1440 kg/ m³ 1 bag = 50 kg of cement…
Failure of Structures Major causes of bridge failure 19 Sep 201819 Sep 2018 Reasons for Failure during construction or soon after Deficiency in design / shift from actual design Poor detailing (for rcc bridge), Poor connection between the structural elements (fitting of bolts…
Civil Engineering What is the difference between Clear cover, Nominal cover & Effective cover in RCC? 19 Sep 201819 Sep 2018 Effective cover Effective cover is the distance measured from the face of the member to the center of area ( centroid ) of reinforcement, i.e., tension or compression reinforcement. Effective…
Surveying Difference Between Plane Surveying and Geodetic Surveying 17 Sep 201811 Sep 2018 Plane Surveying Plane surveying is a branch of surveying in which the surface of the earth is considered as plane surface. For small projects covering Area less than 250 sq.km. Earth curvature is…
Building Materials… Types of Plastering & Finishing for construction of home 16 Sep 201816 Sep 2018 Types of plastering:- There are different types of plasters are available such as: Lime plaster Cement plaster Mud plaster Stucco plaster 1. Lime plaster :- When lime is used as…
Surveying 10 uses of surveying 15 Sep 201811 Sep 2018 USES OF SURVEYING: For preparing the contour map to determine the best possible route and amount of earthwork required. For preparing the engineering map showing engineering details like highways, railways,…
Civil Engineering Which are major/important subject in civil engineering? 15 Sep 2018 As a civil engineer you must have knowledge of all the subjects which are mentioned below, When you work in construction industry as a civil engineer or site engineer or…
Civil Engineering What is effective cover in RCC ? 14 Sep 201812 Sep 2018 Effective cover: Effective cover is the distance measured from the face of the member to the center of area ( centroid ) of reinforcement, i.e., tension or compression reinforcement. Effective…
Civil Engineering Difference between Clear cover and Nominal cover in RCC 13 Sep 201814 Sep 2018 Clear cover Clear cover is the distance measured from the exposed concrete surface (Without plaster and other finishes) to the nearest surface of the reinforcing bar. Nominal cover According to…
Building Materials… What is cement, sand, aggregate ratios in concrete mixing 12 Sep 201811 Sep 2018 The concrete shall be in grades designated Group Grade designation Characteristics compressive strength of 150 mm cube at 28 days, N/mm2. Ordinary Concrete---M10 M15 M20 Standard Concrete---M25 M30 M35 M40 M45…
