The Technical Calculation and Estimator's Man-hour Manual by Marko Bulić is a specialized resource for mechanical and industrial estimators. It focuses on the installation of process equipment, piping, and steel structures for oil, gas, and chemical plants. 📘 Key Manuals & Resources 1. Technical Calculation and Estimator's Man-hour Manual (Marko Bulić) This manual is widely sought for its detailed tables on equipment installation and piping. Core Content: Covers piping above ground, pipelines, steel structures, process equipment, and storage tanks. Application: Specifically tailored for industrial process plants . Availability: Digital copies are often sold through specialized estimation sites like Estimations.info . Estimator's General Construction Manhour Manual (John S. Page) A long-standing industry standard for general construction labor estimating. Best for: Providing an accurate method for estimating direct labor for any given system or location. Purchase: Available in paperback and eBook formats at retailers like Walmart and Target. 3. Industrial Process Plant Construction Estimating (Kenneth Storm) A more modern alternative that integrates statistical data with historical man-hour analysis. Features: Includes Excel templates, mathematical formulas, and detailed scopes for power plants and refineries. Purchase: Can be found at Elsevier . How to calculate the cost of your projects with man hours - ITM Platform

The Technical Calculation and Estimator's Man-Hour Manual by Marko Bulić is a widely recognized industrial resource for calculating labor requirements for process plant and chemical plant erection. It is often referred to by estimators as the "best" manual because it is built on over 30 years of field experience, integrating European and USA standards verified through actual construction projects.   Key Features of the Manual   The manual provides high-precision man-hour tables for several specialized industrial sectors:   Piping Above Ground & Pipelines: Includes standard hours for installing various pipe sizes and materials like carbon steel, stainless steel, and alloy steel. Steel Structures: Categories for light, medium-weight, and heavy structures, including anchor bolt installation and bolting from scaffolding. Process Equipment & Storage Tanks: Comprehensive data for erecting cylindrical and spherical tanks and general petrochemical process equipment. Specialized Crafts: Detailed chapters on welding, flame cutting, corrosion protection (painting), and thermal insulation.   Core Estimating Methodology   The manual emphasizes a "brain first" approach, cautioning against purely automated computer entry.

Technical Calculation and Estimator’s Man-Hour Manual Marko Bulić is considered one of the definitive resources for labor estimation in the erection of process and chemical plants. estimations.info Accessing the Manual You can find preview versions or purchase the full electronic copy through the following platforms: Official Purchase : The complete 239-page manual and individual chapters (e.g., Piping, Steel Structures, Storage Tanks) are available for purchase on the Official Estimations Website Scribd (Previews & Uploads) : Several versions and excerpts are hosted on , including the Marko Bulić 2003 Edition and various Piping Estimator Manual summaries. Key Features of the Manual This manual provides standard man-hour (Mhr) tables based on over 40 years of industrial experience. Key technical areas covered include: www.estimations.info Piping Systems : Standard hours for installing carbon steel and stainless steel pipes, including fittings like elbows, tees, and reducers. Industrial Structures : Estimates for steel structures, process equipment, and cylindrical or spherical storage tanks. Specialized Tasks : Detailed calculations for welding, flame cutting, corrosion protection (coatings), and thermal insulation. Productivity Factors : It emphasizes the use of Productivity Efficiency Percentages (PEP) , which must be determined for each specific project to adjust the base man-hour data. estimations.info Technical Calculation & Man-Hour Manual | PDF - Scribd

Introduction As a technical estimator or calculator, having a reliable man-hour manual is crucial for accurate project estimation and planning. This guide provides an overview of the key concepts, formulas, and best practices for using a man-hour manual, specifically focusing on the Estimator's Man-Hour Manual (EMHM) and similar technical calculation resources. Understanding Man-Hours Man-hours are a measure of the amount of work that can be performed by one person in one hour. In construction, manufacturing, and other industries, man-hours are used to estimate the time required to complete a specific task or project. Man-hours take into account factors like labor productivity, skill levels, and work complexity. Estimator's Man-Hour Manual (EMHM) The Estimator's Man-Hour Manual is a widely used reference guide that provides man-hour estimates for various construction and industrial tasks. The manual is organized by task categories, such as:

Earthwork Concrete Masonry Carpentry Electrical Plumbing Painting and Coating

Each task category contains detailed descriptions, man-hour estimates, and sometimes, sample calculations. Technical Calculations When using the EMHM or similar resources, you'll need to perform technical calculations to estimate man-hours for your specific project. Here are some key steps:

Identify the task : Clearly define the task or activity you want to estimate. Determine the unit of measurement : Choose the relevant unit of measurement (e.g., square feet, linear feet, tons). Select the applicable man-hour estimate : Look up the task in the EMHM or other resource and select the closest matching estimate. Adjust for project-specific factors : Consider factors like:

Labor productivity (e.g., experienced workers, site conditions) Work complexity (e.g., confined spaces, multiple tasks) Skill levels (e.g., specialized labor, training requirements)

Calculate the total man-hours : Multiply the selected man-hour estimate by the quantity of work or units.

Formulas and Examples Some common formulas used in man-hour calculations:

Man-hours per unit : (Man-hours per unit) x (Quantity of units) = Total man-hours Example: 2.5 man-hours/square foot x 1,000 square feet = 2,500 man-hours Labor productivity adjustment : (Man-hours per unit) x (Labor productivity factor) = Adjusted man-hours Example: 2.5 man-hours/square foot x 0.8 (experienced workers) = 2 man-hours/square foot

Best Practices To ensure accurate estimates and effective use of the EMHM or similar resources: