This document discusses different types of cost estimates used in construction projects. It describes rough cost estimates, which are prepared early in the planning process using average unit costs from similar past projects to estimate total costs. Detailed estimates involve calculating quantities and applying current rates to each item. The document provides examples of rough cost estimates for various types of building projects like residential, office, hospital buildings. It also defines key terms like carpet area, plinth area, and super built-up area used in cost estimates.
For civil engineer quantity surveying and estimation costing is very important for any project.
In this presentation we study about the Important terms used in estimation and costing, contingencies, work charge establishment, tools and plants, etc. types of estimates and their functions.
I will describe those things in the documents--
Types of Cost Estimates Used in Construction
Following are the different types of cost estimates used in construction,
Preliminary Cost Estimate
Plinth Area Cost Estimate
Cube Rate Cost Estimate
Approximate Quantity Method Cost Estimate
Detailed Cost Estimate
Revised Cost Estimate
Supplementary Cost Estimate
Annual Repair Cost Estimate
Lec.2 binifits of estamations...Types of EstimationMuthanna Abbu
In this unit the student will learn:
• The main types of estimation.
• When each type of estimation is used.
• Making approximate estimate to predict the expected cost of a project.
For civil engineer quantity surveying and estimation costing is very important for any project.
In this presentation we study about the Important terms used in estimation and costing, contingencies, work charge establishment, tools and plants, etc. types of estimates and their functions.
I will describe those things in the documents--
Types of Cost Estimates Used in Construction
Following are the different types of cost estimates used in construction,
Preliminary Cost Estimate
Plinth Area Cost Estimate
Cube Rate Cost Estimate
Approximate Quantity Method Cost Estimate
Detailed Cost Estimate
Revised Cost Estimate
Supplementary Cost Estimate
Annual Repair Cost Estimate
Lec.2 binifits of estamations...Types of EstimationMuthanna Abbu
In this unit the student will learn:
• The main types of estimation.
• When each type of estimation is used.
• Making approximate estimate to predict the expected cost of a project.
Brief description is given about different types of estimates of buildings in civil engineering with basic technical terminology used in civil engineering field
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Brief description is given about different types of estimates of buildings in civil engineering with basic technical terminology used in civil engineering field
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
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Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
4. There are two main types of estimates:-
1 Rough cost estimate.
2 Detailed estimate.
Depending upon the purpose of estimate, some types
of detailed estimate are as follows:-
a) Contractor's estimate
b) Engineer's estimate
c) Progress estimate
Types Of Estimates
5. • Estimation of cost before construction from plans or
architectural drawings of the project scheme, when even
detailed or structural design has not been carried out, is called
Rough cost estimate.
• These estimates are used for obtaining Administrative Approval
from the concerning Authorities.
• Sometimes, on the basis of rough cost estimates, a proposal
may be dropped altogether.
Rough Cost Estimate
6. • Unit cost is worked out for projects similar to the
project under consideration carried out recently in
nearly the same site conditions.
• Unit cost means cost of execution of a unit quantity of
the work.
Rough Cost Estimate (-Ctd-)
7. • To find rough cost of any project, this worked average unit cost is
multiplied with total quantity of the present work in the same units.
• For example, in case of a building, plinth area (sq. ft.) of the
proposed building is worked out, which is then multiplied by the
cost per unit area (Rs. /ft2) of similar building actually constructed
in the near past in nearly the same site conditions, to find out the
rough cost estimate of the building.
• This cost is sometimes adjusted by the average percentage rise in
the cost of materials and wages.
Rough Cost Estimate (-Ctd-)
8. The rough cost estimate may be prepared on the following basis for different
types of projects:
1. Cost per square foot of covered area (plinth area) is the most commonly
adopted criterion for preparing rough cost estimate for most of the residential
buildings.
2. For public buildings, cost. Per person (cost per capita) is used. For example,
Students hostel ———————— Cost per student
Hospitals ———————— Cost per bed
Hotel ———————— Cost per Guest
Rough Cost Estimate
9. Rough Cost Estimate
3. Cost per cubic foot is particularly suitable for commercial
offices, shopping centers, and factory buildings, etc.
4. For water tank/reservoir, cost may be worked out on the basis
of capacity in gallons of water stored.
5. For roads and railways, cost may be found out per
mile/kilometer of length.
6. For streets, cost may be per hundred feet/meters of length.
7. In case of bridges, cost per foot/meter of clear span may be
calculated.
10. Calculate the total rough cost estimate and cost per
flat for a multi-story (4-story) building consisting of
40 residential flats. Other details are given in the
table:
Example 1
11. Sr.No PORTION
AREA
(sq. ft)
UNIT COST (Rs./sq.ft.)
Building
Works
Sanitary
Works
Electric
Services
Sui Gas
Services
1
Main Flat Area
(i) Ground Floor
(ii) Ist Floor
(iii) 2nd Floor
(iv) 3rd Floor
20030
20030
20030
20030
1800
1500
1650
1800
130
130
130
130
100
100
100
100
60
60
60
60
2 Park Area at G. Floor 75,800 800 -------- 40 -------
3
Circulation Area in all 4
floors
1936 1050 -------- 70 -------
4
Covered Shopping Area at
G. Floor
920 950 -------- 70 -------
5 Attached Servant Quarters 2112 1150 55 70 40
12. 1- Road and Walkways = 15,00,000/-
2- Land Scapping = 12,00,000/-
3- External Sewerage = 7,00,000/-
4- External Water Supply, Overhead and Underground Water
Tanks with pumping machinery for each set of Flats =
19,00,000/-
5- External Electricity = 3,00,000/-
6- Boundary Wall = 6,00,000/-
7- Miscellaneous unforeseen items = 8,00,000/-
8- Add 6 % development charges.
9- Add 3 % consultancy charges
Add the following costs as Lump Sum :
13. Prepare a Rough-cost Estimate of a residential building project
with a total plinth area of all building of 1500 sq.m. given that:
Plinth Area Rate = Rs: 950.00 / sq. ft.
Extra for special architectural treatment = 1.5 % of the building cost.
Extra for water supply and sanitary installations = 5 % of the building cost.
Extra for internal installations = 14 % of the building cost
Extra for Electric & Sui gas services = 16 % of building cost
Contingencies = 3 % overall
Supervision charges = 8 % overall
Design charges = 2 % overall
Example 2
14. Prepare a Rough-cost Estimate based on unit cost, of a four story office
building having a carpet area of 2000 sq.m. for obtaining the
administrative approval of the Government. It may be assumed that 30 %
of the built up area will be taken by the corridors, verandas, lavatories,
staircase, etc. and 10 % of built up area will be occupied by walls. The
following data is given:
Super-Built Area Rate = Rs: 1100.00 / sq. ft.
Extra for special architectural treatment = 0.5 % of the building cost.
Extra for water supply and sanitary installations = 6 % of the building
cost.
Example 3
15. Extra for internal installations = 14 % of the building cost
Extra for electric services = 12.5 % of building cost
Extra for sui gas services = 6 % of building cost
Extra due to deep foundations at site = 1.0 % of building cost
Contingencies = 2.5 % overall
Supervision charges = 8 % overall
Design charges = 2.5 % overall
Example 3
16. Prepare a Rough-cost Estimate for obtaining the administrative
approval of the Government for a hospital project to serve both indoor
and outdoor patients in an important rural area. The hospital will
consist of the following:
Main administrative office with dispensing operations, etc.
Two general wards, each of 20 general beds.
Superintendent Doctor’s Residence.
Two Assistant Doctor’s Residences.
Eight single Nurses Quarters.
Four Compounder’s Quarters.
Twelve lower staff’s Quarters.
Example 4
17. • Detailed estimates are prepared by carefully and separately
calculating in detail, the costs of various items of the work that
constitute the whole project from the detailed working drawings
after the design has been finalized.
• The mistakes, if any, in the rough cost estimate are eliminated in
the detailed estimate.
• Detailed estimates are submitted to the competent authorities for
obtaining technical sanction.
Detailed Estimate
18. The whole project is sub-divided into different items of work or
activities. The quantity for each item is then calculated separately
from the drawings as accurately as possible. The procedure is
known as "taking out of quantities".
The quantities for each item may be estimated and shown in the
pattern which is called "Bill of quantities."
The unit, in which each item of the wok is to be calculated, should
be according to the prevailing practice as followed in various
departments of the country.
Detailed Estimate
19. Bill Of Quantities
Sr. No
Description
of item
No
Measurements
Quantity
Total
Quantity
Remarks
Length Breadth Height
20. Priced Bill Of Quantities
Sr. No Description of Item Unit Quantity Rate Cost Remarks
21. Each item of the work is then multiplied by its estimated current rate
calculated by a fixed procedure to find out cost of the item.
At the end, a total of all items of the work are made to get the total
estimated cost.
The rates are usually as per Schedule of Rates for the locality plus a
premium to allow for rise in labor and material rates over and above the
schedule of rates.
A percentage, usually 5% is also provided on the total estimated cost for
the work to allow for the possible contingencies due to unforeseen items
or expenditure or other causes, besides 2% establishment charges.
Detailed Estimate
22. Besides drawings and details of measurements and calculation of
quantities (Bill of Quantities), the following documents are also usually
submitted with the detailed estimate for obtaining Technical Sanction:
1. A report explaining History, necessity, scope and main features of the
project, its design, and estimate, etc.
2. Specifications lying down the nature and class of work and material to be
used in various parts of the work.
3. The abstract of cost (priced Bill of Quantities) showing the total
quantities under each sub-head, rate per unit of measurement, and cost.
4. Calculation sheets showing calculations for important parts of the
structure. In fact, in estimating the art and skill lies only in the
computation of details without any omissions, of all parts of the building
or work.
Detailed Estimate
23. Classification Depending Upon Purpose Of
Detailed Estimate
1- Contractor Estimate
It is made by the contractor for determining the price or prices to
be bid.
It is usually a carefully prepared detailed estimate.
2- Engineer’s Estimate
This type of estimate is made by the Engineer (Consultant) usually
for the purposes of financing the work and for checking bids and
running bills submitted by contractors.
24. 3- Progress Estimate
• These are made by the Engineer at regular intervals for the
completed parts of the project during the progress of the work for
determining the amounts of partial payments to be made to the
contractor.
• On large contracts, such estimates are commonly made each month
and, hence, are frequently called monthly estimates.
Classification Depending Upon Purpose Of
Detailed Estimate
25. Carpet Area: Total usable area within the four walls of an apartment
or a commercial space, as the case may be. In other words, it refers
to the area for which a carpet can be laid if required by the owners.
Plinth Area: The entire carpet area along with the thickness of the
external walls of the apartment. It obviously includes the thickness of
the internal walls and the columns, if any, lying within the four walls
of an apartment. The commercial space is not taken into account in
calculating the plinth area.
Super Built-up Area: The plinth area of an apartment or a
commercial unit as added by the balconies and other common areas
like corridors, staircase, lift room, motor room, security room,
meeting hall, gymnasium and an area reserved for indoor games.
Basic Terms