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Basics of Computer Memory

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From:Shafqat Ali

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Basics of computer memory, how its created and used
Basics of Design of Bitumenous Mix

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From:kanhaiya kanhaiya

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Overview The bituminous mix design aims to determine the proportion of bitumen, filler, fine aggregates, and coarse aggregates to produce a mix which is workable, strong, durable and economical. The requirements of the mix design and the two major stages of the mix design, i.e dry mix design and wet mix design will be discussed. Evolution of road surface • Unsurfaced earthen roads, or cart-track • Unsurfaced earthen roads upgrades with natural soil from borrow pits and attention to drainage, and compaction is by traffic • Dry aggregate and sand-clays mix, in which the the former act as wear resistant and the latter as natural binder • Water-bound macadam, the above constituents, mixed together (pre-mix or in-situ) with water and compacted to improve the strength • Oiled roads, introduced to reduce dust by bitumen stabilized soils • Seal coat: the base course is protected from traffic and moisture by sealing the surface with a thin film of bitumen aggregate mix, which is structurally strong surface for pneumatic-tyred traffic. This is provided on firm and smooth base course after a tack coat using cutback bitumen or bitumen emulsions with a penetration of 5 mm. • Asphaltic concrete: Traffic and the axle configuration are increasing very much which raises demand for the new type of pavement which can meet the above requirements. The asphaltic concrete is one which is the high dense graded premix and it is termed as the highest quality pavement surface course. • Bitumen mix or asphalt mix overlays of minimum 20 - 40 mm to as high as 300 - 500 mm or even more. Objectives of mix design The objective of the mix design is to produce a bituminous mix by proportionating various components so as to have: 1. sufficient bitumen to ensure a durable pavement, 2. sufficient strength to resist shear deformation under traffic at higher temperature, 3. sufficient air voids in the compacted bitumen to allow for additional compactio
Water safety at Home

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From:kanhaiya kanhaiya

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Water safety at home Contents:- • Water safety at home • How you can help make your home water safe • Swimming pool rules • What if an accident happens? • Dr Kate says • Some kids' stories Water safety at home Every year many young children drown in or around their own homes. Not all of these accidents happen in swimming pools. A small child can drown in quite a small amount of water, in a bucket of water for example. Some children live near creeks while others live on farms where there are dams to hold water for the farm animals. Fishponds or fountains that hold water around them can be dangerous. Ordinary baths in the bathroom can be very unsafe for young children if they are left alone. A laundry tub or kitchen sink full of water isn't out of reach for an adventurous toddler. How you can help make your home water safe If you are old enough to be able to read this then you are old enough to help make your home a water-safe place for young children. • It is the Law that swimming pools in Australia have to have fences around them. o You can help make sure that the gate is kept closed at all times so that little people can't get to the pool by themselves. • Spas need to have hard covers over them when they are not being used. o You can help make sure that the spa cover is on and locked before any little kids go near it. • Fishponds need to have covers over them to stop little kids falling in. o If your pond hasn't got a cover then ask mum or dad if you can help make one. Or maybe even help to fill the pond with dirt or stones until your younger brothers and sisters are big enough to understand the danger and can climb out of the pool by themselves if they slip in. • Baths are lots of fun for little kids to play in and get clean at the same time. It is dangerous for a young child to be in a bath alone. o You can help by making sure that the bath plug can't be reached and put into the plughole by little kid
Method of Design of Flexible pavements

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From:kanhaiya kanhaiya

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Method of design of flexible pavements Overview Indian roads congress has specified the design procedures for flexible pavements based on CBR values. The Pavement designs given in the previous edition IRC: 37-1984 were applicable to design traffic up to only 30 million standard axles (msa). The earlier code is empirical in nature which has limitations regarding applicability and extrapolation. This guideline follows analytical designs and developed new set of designs up to 150 msa in IRC: 37-2001. Scope These guidelines will apply to design of flexible pavements for Expressway, National Highways, State Highways, Major District Roads, and other categories of roads. Flexible pavements are considered to include the pavements which have bituminous surfacing and granular base and sub-base courses conforming to IRC/ MOST standards. These guidelines apply to new pavements. Design criteria The flexible pavements has been modeled as a three layer structure and stresses and strains at critical locations have been computed using the linear elastic model. To give proper consideration to the aspects of performance, the following three types of pavement distress resulting from repeated (cyclic) application of traffic loads are considered: 1. Vertical compressive strain at the top of the sub-grade which can cause sub-grade deformation resulting in permanent deformation at the pavement surface. 2. Horizontal tensile strain or stress at the bottom of the bituminous layer which can cause fracture of the bituminous layer. 3. Pavement deformation within the bituminous layer. While the permanent deformation within the bituminous layer can be controlled by meeting the mix design requirements, thickness of granular and bituminous layers are selected using the analytical design approach so that strains at the critical points are within the allowable limits. For calculating tensile strains at the bottom of the bituminous layer, the stiffness of dense bituminous macada
Concrete Mix Design - DOC

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From:kanhaiya kanhaiya

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Concrete Mix Design Introduction The process of selecting suitable ingredients of concrete and determining their relative amounts with the objective of producing a concrete of the required, strength, durability, and workability as economically as possible, is termed the concrete mix design. The proportioning of ingredient of concrete is governed by the required performance of concrete in 2 states, namely the plastic and the hardened states. If the plastic concrete is not workable, it cannot be properly placed and compacted. The property of workability, therefore, becomes of vital importance. The compressive strength of hardened concrete which is generally considered to be an index of its other properties, depends upon many factors, e.g. quality and quantity of cement, water and aggregates; batching and mixing; placing, compaction and curing. The cost of concrete is made up of the cost of materials, plant and labour. The variations in the cost of materials arise from the fact that the cement is several times costly than the aggregate, thus the aim is to produce as lean a mix as possible. From technical point of view the rich mixes may lead to high shrinkage and cracking in the structural concrete, and to evolution of high heat of hydration in mass concrete which may cause cracking. The actual cost of concrete is related to the cost of materials required for producing a minimum mean strength called characteristic strength that is specified by the designer of the structure. This depends on the quality control measures, but there is no doubt that the quality control adds to the cost of concrete. The extent of quality control is often an economic compromise, and depends on the size and type of job. The cost of labour depends on the workability of mix, e.g., a concrete mix of inadequate workability may result in a high cost of labour to obtain a degree of compaction with available equipment. Requirements of concrete mix design The requirements which form the basis o
masm6.15 code

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From:Anum Kibria

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following tasks are done (code): a.Implement the expression Rval = -Xval (Yval – Zval). Take the values of the variables X,Y and Z from user b.Declare a string and then copy this string to another string in reverse order and print that string c.Declare and array of zeros of length 6. Use jump instruction to repeat the process 6 times and take 6 values input from the user and store in the array then use another loop to add up the values of the array and print the result d.Write a program to repeatedly print a string by making it shorter by one character on every next line.
DATABASE SYSTEM

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From:gbolahan dare

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RELATIONAL SYSTEM
AUGMENTED DESK SYSTM

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From:gbolahan dare

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AUGMENTED DESK SYSTEM
INPUT AND OUTPUT PROCESSOR

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From:gbolahan dare

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Control signal in microprossors..
Unix Commands Cheat Sheet

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From:Examville.com

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Unix Commands cheat sheet for programmers. More reference guides available at Examville.com
Ruby on Rails Cheat Sheet - PDF

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From:Examville.com

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Ruby on Rails cheat sheet for programmers. More reference guides available at Examville.com
Mac OS-X Cheat Sheet

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From:Examville.com

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Quick reference guide to Mac OSX. More reference guides available at Examville.com
Linix Cheat Sheet

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From:Examville.com

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Linux command prompts cheat sheet for programmers. More reference guides available at Examville.com
Google Search Cheat Sheet

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From:Examville.com

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Quick reference guide to optimize Google Searches.
Cloud Computing Made Simple

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From:Nesan IP

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This Document give the reader a INTRODUCTION to cloud Computing.