Environment Estimating In Building Construction Pdf


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Flow: the psychology of optimal experience/Mihaly. under the reference to page 1, find a lead to Aristotle's view of h Building Construction Handbook. Estimating in building construction / Frank R. Dagostino, Steven J. Peterson.—7th ed. manual is in PDF format and requires Adobe Acrobat Reader to open. PDF | Building actors need accurate estimates in order to efficiently undertake the construction of buildings. The knowledge of real expected costs of construction.

Estimating In Building Construction Pdf

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Estimating in Building Construction. NINTH EDITION. Steven J. Peterson. Weber State University. Frank R. Dagostino. Hudson Street, NY, NY Estimation and Quantity Surveying By resourceone.infoh Kumar (Local Author) Book – PDF Free Download Summery Estimating and Quantity Surveying in Civil. HEIGHT LENGTH. WIDTH. 1 columns. 1 x long walls. 1 x 2. cross walls. 1 x 2.

Since then, my work has taken me across the MENA region to Oman and the major oil and gas exploration company in the country. In late summer , Routledge suggested this related textbook on an Introduction to Estimating for Construction and I readily accepted for the reasons above.

What information is contained on the working drawings?

The contents and structure of this book are slightly different from traditional texts on construction cost estimating. I make no apology for this, and the main reason is that the industry, both internationally and in the UK, has changed quite considerably over the last twenty years the builder is invariably involved much earlier in the process, which not only affects procurement issues but also cost estimating, since construction companies have a much greater depth of cost information at their disposal.

Additionally, the industry has become drier, with a greater proportion of work being manufactured off site, ranging from roof trusses to architectural finishings and faades, and even to entire modules or pods which can be lifted into position and only require to be plugged in on site.

This reduces the site-based wet trades with their consequent higher levels of wastage and lower levels of quality control. Therefore, this book is designed to integrate the concept of early contractor involvement, whilst still covering the fundamentals of construction cost estimating.

Construction contracting is still a very commercial activity and also one of the last industries where negotiating the lowest possible cost whilst transferring more and more risk to the contractor is still considered as normal practice and the thing to do. The practice of reverse auctions has even accelerated this to new levels.

Estimating in Building Construction, 8th Edition

If, after studying this book, together with Introduction to Building Procurement, there is a greater realisation that you get what you pay for, together with an understanding of the tensions within the time-cost-quality triangle Figure 5.

Brian Greenhalgh Downloaded by There is also the commonly held confusion between what is meant by an estimate and a quotation and the difference is important in tendering procedures.

An estimate provided by a builder, or any other service provider for that matter, is not a guaranteed price for the work; it is merely an estimate which could go up or down, although this is unlikely depending on the actual costs incurred during the implementation of the work.

As this uncertainty is generally unacceptable to most clients, they will invariably ask for a quotation, which is a fixed price for the works and is normally legally bind- ing providing the scope of works does not change. Chapter 7 explains the procedure in converting the contractors estimate to a quotation to be formally submitted to the client.

In this respect, the terms bid and tender are interchangeable with quotation. In terms of estimating the anticipated costs of construction work, there are three basic techniques in common use and this book is designed as an introduction to the principles of estimating using all three techniques, including how they interact with each other at the various stages of the construction project, from feasibility through the design stages and finally during construction itself.

Clearly, there will be differences between the two, mainly in terms of size, location, quality of materials used and the time difference between the respective dates of construction. This comparison will be made in terms of the total building and is generally given as a cost per square metre of the gross internal floor area GIFA of the proposed building.

Second, the costs can be estimated by splitting the building down into its component elements see Table 5. This is a slightly more accurate technique than the first and therefore requires more information about what is going to be built i. These two techniques are often collectively known as approximate estimating and should be accurate at this stage to within 10 per cent of the eventual lump 2 Introduction to estimating construction work sum tender price which may not necessarily be the final cost of the building, as we shall see.

Introduction to Estimating for Construction.pdf

Third, when detailed design information is finally available, the resources required to construct the building i. The aggregate anticipated costs of all these resources will be the estimate for the total project. However, the estimate established by this method will only consider the direct construction costs and takes no account of the contractors general company over- heads and any required profit, which are added later by the construction firm contrac- tor when converting the estimate to a tender to be submitted to the client.

Furthermore, the first two techniques take their data from previously constructed projects, and these will have included the overheads and profit and are also based on contract prices which have previously been submitted in competition known in cost estimating as Downloaded by As if that is not complicated enough, if a bill of quantities is used as a project pricing document, the resource costs would need to be converted from the costs of an activity to unit costs of each item in the bill of quantities, which may seem on the face of it to be an unnecessary burden on the tendering contractors.

The need for accurate estimates before the client makes a commitment to go ahead with a project is clearly obvious. The client needs to know the amount of funds they should set aside for the project and, if possible, what their likely monthly outgoings will be during the construction stage of the project. Full Name Comment goes here.

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No notes for slide. Book Details Author: Steven Peterson ,Frank Dagostino Pages: Hardcover Brand: Description The only complete, up-to-date guide to estimating modern building construction projects -- now updated, expanded, and incorporating many additional workbook problems.

Now updated and expanded, Estimating in Building Construction, Eighth Edition, brings together everything needed for a complete, modern course in estimating. Building on well-proven previous editions, it combines sound coverage of principles with step-by-step procedures to help students learn concepts more easily.

Ideal for construction, architecture, and engineering students, it reflects the popular approach of tracking a complete project's progress.

There are examples of estimating portions of the building that many General Contractors perform, and thorough coverage of the use of specialty subcontractors. Means uses an extensive research network that includes contractors, manufacturers, wholesalers, distributors, labor experts, and individual estimators throughout cities in the US and Canada. Means provides individual indexes for each of the cities whereas the ENR publishes an average of the 30 largest US cities.

January 1, is used as the base period by this index, but Means includes instructions for converting costs from any given year to another year. The formula uses a ratio of the two-year indexes multiplied by the cost in one of the years as follows.

Source: Turner. They range in diversity in both the type of construction they measure and in the region of application. Source: Means. The other 10 are listed below and are included later in this chapter when applicability issues are explored. The Austin Company.

Labor and material portions include site work, electrical, mechanical, HVAC, and process services. Bureau of Reclamation. Chemical Engineering. McGraw-Hill provides this index that is published each month in Chemical Engineering magazine.

Factory Mutual Engineering. The differing construction types provide a weighting system that is applied to eight separate trades and seven different materials.

Fru-Con Corporation. This is a local index for the St. The index is weighted using different percentages of labor, concrete, mortar, clay products, lumber, plastics, metals, paint, and glass.

Handy Whitman. Whitman, Requardt and Associates publishes this index based on an average of six different regions for a reinforced concrete building. Materials included are ready-mix concrete, lumber, steel bars, brick, and concrete block.

Wages include six trades plus common labor.The tendering companies will be required to submit a list of previous projects undertaken, preferably with client references.

They must also identify any health or safety risks that their operations may create for others working at the site and agree appropriate control measures.

Crews of steelworkers must be available to fit pieces together, bolt joints, and perform any necessary welding. These changes generally leave the core of the estimating function relatively unchanged, although they may alter the location and the significance of estimating in the overall business process.

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The budgeted cost should also be updated periodically to reflect the estimated cost to completion as well as to ensure adequate cash flows for the completion of the project. When paid, this will reduce cash in a g and the merry-go-round starts again. Bureau of Reclamation. Clearly, there will be differences between the two, mainly in terms of size, location, quality of materials used and the time difference between the respective dates of construction.

This initiative, whilst clearly being a worthwhile project from a host countrys perspective, also means that the tendering contractors will not be able to resource the projects as they would wish with the most cost-effective resources at their disposal and are also required to submit themselves to a rigorous prequalification or validation procedure, which adds more costs to their company overheads.

Includes bibliographical references and index.