Electrical Estimating Methods ( RSMeans )

Publication series :RSMeans

Author: Wayne J. Del Pico  

Publisher: John Wiley & Sons Inc‎

Publication year: 2014

E-ISBN: 9781118766965

P-ISBN(Paperback): 9781118766989

P-ISBN(Hardback):  9781118766989

Subject: TM1 electrician theories

Language: ENG

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Description

Simplify the estimating process with the latest data, materials, and practices

Electrical Estimating Methods, Fourth Edition is a comprehensive guide to estimating electrical costs, with data provided by leading construction database RS Means. The book covers the materials and processes encountered by the modern contractor, and provides all the information professionals need to make the most precise estimate. The fourth edition has been updated to reflect the changing materials, techniques, and practices in the field, and provides the most recent Means cost data available. The complexity of electrical systems can make accurate estimation difficult, but this guide contains all the necessary information in one place.

An electrical estimate represents the total cost for materials, labor, overhead and profit, but accuracy is virtually impossible without a basic knowledge of the field, and real-world experience in the type of work required. Inaccurate estimates lead to problems with customer satisfaction, which often create payment issues. A thorough, complete, and accurate estimate is in the best interest of all parties involved in the work. Electrical Estimating Methods provides more than just data. Detailed discussions about the work itself help highlight factors that may escape notice, and access to the latest cost data helps tie everything together. Features include:

  • Discussion of current equipment, materials, and processes
  • Means data for both residential and commercial projects
  • Case studies that illustrate best practices
  • Online access to the latest Means data for fast access on the job

The book discusses specific situations as well as general practices, and provides comprehensive guidance to the creation of a true, current, estimation of costs. For electrical contractors and estimators, Electrical Estimating Methods contains must-have content that simplifies the estimating process.

Chapter

CHAPTER 3 Before Starting the Estimate

Obtaining Bid Documents

To Bid or Not to Bid

Document Study

Estimating Team Meeting

CHAPTER 4 The Quantity Takeoff

Beginning the Quantity Takeoff

Rules to Follow for Accurate Takeoffs

Rule 1: Write Clear Task Descriptions

Rule 2: Use Industry‐Accepted Units

Rule 3: Follow a Logical Order

Rule 4: Review Scales, Notes, Abbreviations, Symbols, and Definitions

Rule 5: Verify Dimensions

Rule 6: Be Consistent

Rule 7: Number Takeoff Sheets

Rule 8: Define Units for Material, Work, and Assembly Items

Rule 9: Use Decimals

Rule 10: Verify Appropriate Level of Accuracy

Rule 11: Calculate Net versus Gross Quantities

Rule 12: Check the Takeoff

Rule 13: Mark up the Drawings as Bid Documents

Rule 14: Maintain Concentration

Rule 15: Organize the Documentation

Rule 16: Rounding

Accounting for Waste

Adjusting for Standard Sales Units

Waste Resulting from Handling/Storage

Waste Required for Lap

Other Factors that Affect Quantities

Economy of Scale

CHAPTER 5 Pricing the Estimate

Sources of Cost Data

Cost Categories

Types of Costs

Profit

CHAPTER 6 Direct Costs

Material

Labor

Billing Rate

Labor Productivity

Individual and Crew Tasks

Equipment

Subcontractors

Project Overhead

Time‐Sensitive Costs

Fixed Overhead Costs

Applying Prices to General Requirements

Bonds

Subcontractor Bonds

Sample Calculation

CHAPTER 7 Indirect Costs

Home Office Overhead

Example

Profit and Contingencies

Profit

Factors in Determining Profit

Contingencies

CHAPTER 8 The Unit Price, Project Overhead Summary, and Estimate Summary Sheets

Unit Price Sheet

Project Overhead Summary Sheet

The Estimate Summary Sheet

Applying Markups at the Estimate Summary Level

Markups on Subcontractors

CHAPTER 9 Prebid Scheduling

Scheduling Theory

Critical Path Method (CPM)

Value of the Prebid Schedule

Task Types

Task Durations

Calculating Durations

Daily Production Rate Method

Milestones and Constraints

CHAPTER 10 Bidding Strategies

The Business Plan

Competitive Bidding

To Bid or Not to Bid

Application of Markup

Home Office Overhead

Resource Analysis

Market Analysis

Determining Risk in a New Market Area

General Bidding Strategies

Quantity Bidding

Selective Bidding

Developing a Bidding Strategy

Maximizing the Profit-to-Volume Ratio

CHAPTER 11 Project Cost Control and Analysis

Cost Control

The Practice of Cost Control

Productivity and Efficiency

Overtime Impact

PART 2 COMPONENTS OF ELECTRICAL SYSTEMS

CHAPTER 12 Raceways

Cable Tray

Conduit (to 15' High)

Conduit Fittings

Conduit in Concrete Slab

Conduit in Trench

Cutting and Drilling

Wire Duct—Plastic

Trench Duct

Underfloor Duct

Surface Metal Raceways

Wireways

Flexible Metallic Conduit

CHAPTER 13 Conductors and Grounding

Wire

Armored Cable

Cable Terminations (to 600 Volt)

Shielded Power Cables

Cable Terminations (High Voltage)

Mineral Insulated Cable

Nonmetallic Sheathed Cable

Fiber-Optic Cable Systems

Special Wires

Grounding

Undercarpet Wiring

Undercarpet Telephone Systems

Undercarpet Data Systems

CHAPTER 14 Boxes and Wiring Devices

Pull Boxes and Cabinets

Outlet Boxes

Wiring Devices and Low-Voltage Switching

Fasteners

Hangers

CHAPTER 15 Starters, Boards, and Switches

Circuit Breakers

Control Stations

Fuses

Load Centers

Meter Centers and Sockets

Motor Control Center

Motor Control Center Components

Motor Connections

Motors

Motor Starters and Controls

Contactors

Relays

Panelboards

Panelboard Circuit Breakers

Safety Switches

Switchboards

Substations

Control Switches

CHAPTER 16 Transformers and Bus Duct

Transformers

Isolating Panels

Bus Duct

Plug‐in Units

Bus Duct Fittings

Bus Duct Busway—100A and Less

Uninterruptible Power Supply Systems

CHAPTER 17 Power Systems and Capacitors

Capacitors

Generator Set

Automatic and Manual Transfer Switches

CHAPTER 18 Lighting

Interior Lighting Fixtures

Exit and Emergency Lighting

Exterior Fixtures

Lamps

Track Lighting

Fixture Whips

CHAPTER 19 Electrical Utilities

Electric Site Work

CHAPTER 20 Special Systems

Special Systems

Clock Systems

Detection Systems

Doorbell Systems

Electric Heating

Lightning Protection

Nurses’ Call Systems

Closed-Circuit TV Systems

Residential Wiring

CHAPTER 21 Electrical Demolition and Temporary Facilities

Defining the Electrical Demolition Scope

Electrical Demolition

Temporary Facilities

CHAPTER 22 Contract Modifications

Contract Modifications

Change Orders

Construction Change Directives

Minor Changes and Field Directives

Pricing Changes in the Work

What Makes Change Orders Different

Change Orders and the Schedule

Timing of Change Orders

Effects of Overtime

CHAPTER 23 Project Closeout

The Closeout Process

Objectives of the Closeout Process

Contract Closeout

Administrative Closeout

Lessons Learned

CHAPTER 24 Computerized Estimating

Basic Spreadsheet Programs

Stand-Alone Estimating Software

Selecting the Best Software

Quantity Takeoff Software

APPENDIX Symbols and Abbreviations

Trade Specific Symbols

Index

EULA

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