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Difference Between the Primary versus Secondary

This article explains the difference between the primary versus secondary industry classification and top-level industry versus sub-industry classification Primary versus Secondary Industry Classification The primary/secondary industry classification defines a Get price


How to Figure Out Elevation Grade

Depending on the method used to finding elevation grade it can expressed in different ways like decimal percentage and degree How to Calculate Elevation Grade Before you figure out elevation grade elevations must be taken from the starting and ending points for comparison as well as the starting and ending distances Get price


Introduction to pavement design

Compared to flexible pavement rigid pavements are placed either directly on the prepared sub-grade or on a single layer of granular or stabilized material Since there is only one layer of material between the concrete and the sub-grade this layer can be called as base or sub-base course Get price


Difference Between Area and Surface Area

Since all the sides of a cube are squares with equal base sizes we can express the surface area of a cube as 6 x (Area of a face of the cube (which is a square)) Let us consider a right circular cylinder What is the difference between Area and Surface Area?Get price


Steel Grades and Properties

Stainless steels generally contain between 10-20% chromium as the main alloying element and are valued for high corrosion resistance With over 11% chromium steel is about 200 times more resistant to corrosion than mild steel These steels can be divided into Get price


Supermarket fuel Vs the branded fuel What's the difference?

The only difference is Depending on what type of vehicle you are driving whether it's been tuned or has a standard map you may notice differences between using different filling stations so you can use any to fill up your vehicle with petrol or diesel knowing it's all of the same 'base' fuel Get price


CW 3110 SUB

1 Sub-grade – the natural in-situ material 2 Sub-base – where required the layer of material provided between the sub-grade and the base course 3 Base course – the layer of base course material greater than 50mm in depth immediately underlying the pavement wearing surface Get price


What Is the Difference Between Lean Concrete

Lean concrete and flowable concrete are terms used to describe low-grade concrete slurry that is used in a variety of construction projects In some ways the two terms are interchangeable both describing concrete made with lesser ingredients but there are some differences in how the two are used Get price



the distance between water table and Specifying a minimum subbase depth of 4 in Specifying a minimum density for untreated sub- bases of 105 percent of AASHTO T99 for heavily traveled projects Specifying a cement-treated or lean concrete sub- base that provides a strong and uniform support for the pavement and joints provides an Get price


Modulus of Subgrade reaction

In our opinion the responsibility is shared jointly between the structural engineer and the geotechnical base material (Ref's 10 and 11) Tables and charts for these increased subgrade reaction values using base materials can be found in a number of publications Get price



storage of sub base and base course pavement materials B Materials specified for use in the construction of sub-base and base courses for flexible and rigid pavements include the following - Screened or partially crushed granular material consisting of well graded gravel crushed stone or crushed gravel for sub-base course construction Get price


Construction of WBM roads WMM

The grade 1 aggregates having size of 90 mm to 40 mm are preferred for the sub-base material and grade 2 for the base and grade 1 for the surface course However if we only use the WBM as the surface course it gets deteriorated fast due to abrasion with the traffic so bituminous surfacing over the WBM is general practice Get price


What Is the Difference Between Topsoil Subsoil

28-10-2019Soil provides the first link in the food chain for land-based animals growing plants nourish both herbivores and omnivores with nutrient-rich fruits roots and foliage Soil is not a lifeless mound of dirt holding plant roots however In fact every square inch holds some form of Get price


#1 Difference Between Food Grade And Topical Hemp Oil

Difference Between Food Grade And Topical Hemp Oil Almost all the forms of plastics can be made by using hemp oil instead of using petroleum as a base As those made from petroleum release harmful chemicals while decomposition but those from hemp oil don't Get price


Road Base Sub Base Pathway Natural

Benedict offers a huge range of recycled quarried and blended compactable materials to meet any application or specification of our Civil and Landscape Customers Underneath Roads generally our customers will use 75mm Crushed Sandstone (RMS 3071 Type A) as the sub-base followed by a 20mm Recycled DGB (RMS 3051) as the base-coarse Get price


Flexible Pavement Composition and Structure

3-11-2018The sub-grade should be strong enough to take the stresses and also it is important to keep the stresses coming from top layers should be within the limit of sub-grade capacity To reduce the amount of stress on soil sub-grade provide thick layers of base course Sub-base Get price


Application Description

For maximum base stability the granular base should have sufficient fines to just fill the voids and the entire gradation should be close to its maximum density However while base density is maximized at fines content between 6 and 20 percent load-carrying capacity decreases when the fines content exceeds about 9 percent Get price


The Differences Between Subsidized vs Unsubsidized

Learn the difference between a subsidized and an unsubsidized student loan which is better $31 000 (includes both sub and unsub) $23 000 $57 500(includes both sub and unsub) *for graduate and professional student the aggregate limit is $138 500 of Get price


Comparison between Flexible Pavement and rigid

Comparison between Flexible Pavement and rigid pavement in highway construction Comparison between Flexible Pavement and rigid pavement in highway construction admin April 27 2015 Machinery and Equipment No Comments A typical flexible pavement structure consists of the surface course and underlying base and sub base courses Get price


Base course

The base course or basecourse in pavements is a layer of material in an asphalt roadway race track riding arena or sporting field It is located under the surface layer consisting of the wearing course and sometimes an extra binder course If there is a sub-base course the base course is Get price


Relationship between Ka and Kb (article)

26-10-2019Relationship between Ka and Kb Relationship between Ka of a weak acid and Kb for its conjugate base Equations for converting between Ka and Kb and converting between pKa and pKb If you're seeing this message it means we're having trouble loading external resources on our website Get price


Sub Procedures (Visual Basic)

Sub Procedures (Visual Basic) 07/20/2015 A Sub procedure is a series of Visual Basic statements enclosed by the Sub and End Sub statements The Sub procedure performs a task and then returns control to the calling code but it does not return a value to the calling code Get price


What is the OMC and MDD for subgrade (soil) Granular

What is the OMC and MDD for subgrade (soil) Granular Sub Base Type of Layer MDD OMC Embankment 1 60 gm/cc 14% for the height upto 6 m Sub grade 1 75 gm/cc 12% Granular Sub base 2 262 gm/cc 4 5% Why are separation membranes used between concrete pavement slab and sub-base? 0 AnswersGet price


Difference Between Garden Soil and Top Soil

9-12-2018Whether you are revamping your flower beds or landscaping your entire yard it is important to use the right materials Using the wrong soil could result in all your hard work being washed away during the first heavy rain or your flowers might fail to bloom for lack of nutrients One of the mostGet price


Crushed Stone Grades A Complete Guide

Crushed Stone Grades The following list gives a rundown of crushed stone grades and their best uses While there may be slight variances in the naming convention of crushed stone the following are the most common names and sizes Crushed stone #5 – Sizes are from 1″ down to fine particles For road and paver base Get price


Paving Expert

Bad ground soft spots and other construction works may need the sub-grade to be reduced even further to overcome these problems It is much more cost efficient to remove any potential trouble-spots at this stage than have to take up a section of the final pavement and re-construct the sub-base Get price


QPA Aggregates Group Bulletin6 Type 1 granular sub

The situation for Type 1 granular sub-base is slightly different Type 1 is considered to be an unbound mixture of aggregates rather than simply an aggregate It could be described as being like an asphalt mixture (but without any bitumen) or a CBM (but without any cement) It Get price


MDF vs Plywood

1-5-1977MDF vs Plywood comparison Medium-density fiberboard (MDF) is generally cheaper than plywood but it is not as hard and can sag under heavy weight MDF doesn't handle moisture very well either so it is more suited for indoor use such as in furniture Moisture also affects the strGet price


The Differences Between Salary Ranges Pay Grades

There is no single best solution but there are three options that provide general guidelines The challenge with these three types of pay scales is that they can appear similar upon first glance but there are differences between salary ranges pay grades and pay bands Get price


Difference Between Theme and Topic

3-10-2017Many feel so and think of theme and topic as interchangeable but the fact is that there are many differences between theme and topic that will be highlighted in this article Theme The theme of a story or a play is deeply related with its subject or content "upon which to BASE Get price

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