Quantity Survey /Take-Off
During the bid procees the GC's team will have prepared a Quantity Take-Off for the project contruction documents.
The project will be reduced to numerical values for all proposed work.
Estimating Software including;
-Means from McGraw-Hill
-National Construction Cost Estimator from Craftsman
Provide installed assembly, material, component, equipment and workforce unit costs. The publishers base unit cost on data collected from construction industry bids and actual costs, adjusted by location with updates at each log-on to their system.
More sophisticated applications of estimating software can integrate with construction documents containing BIM tags.
For this class using the Airport Parking Facility drawings, we will be taking a less sophisticated approach;
Measure drawings to produce assembly quantities;
-Square Foot site area
-Square Foot disturbed area
-Linear foot "super silt fence"
-Linear foot temporary security fence
-Square Foot site entrance "rip-rap"
-Cubic Yard, 6" deep vegetable soil to be removed (recycle yard less than 15 miles in Trainer PA)
-Cubic Yard cut and fill on site material
-Cubic Yard imported soil material (recycled material from Trainer PA)
-Linear foot storm sewer trench cut and fill
-Linear foot storm sewer and bedding
-Quantity new manhole
-Quantity modify existing manhole
-Linear foot electric conduit and trench cut and fill
-Number of light pole footing, and light poles
-Linear foot straight curb and linear foot curved curb
-Square foot prefab structure pads
-Square foot paved area, stone base, asphalt base, asphalt wear coat, striping
-Linear foot permanent fence
The gate, entry booth and gate control system will typically be supplied and installed by a control system subcontractor, but the GC will provide power, trenching and pads.
Project costs that do not represent a direct cost for construction assemblies; temporary utilities and facilities, security,.. costs will be reported under Mobilization and may be prorated over the proposed contract period and will include temporary facilities such as site trailer, WC, temporary utilities, installation and removal.
Storm Water Management during construction is a contract requirement and will include erection, maintenance and removal. While this item is a temporary facility it will be costed and included on the payment voucher as a separate line item.
Assume all engineering testing is by the owners team.
Assignment class #11
Take-off square foot and linear foot quantities for curbing and asphalt paving, assume paving system stone base is complete. Note quantity of straight run curbing separate from curved run curbing.
Thursday, November 5, 2009
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Construction Management 1
Lectures for the Construction Management I course will be structured roughly following the format of "Construction Project Management 3rd Edition by Gould and Joyce" and supplemental information from "Construction Project Administration" 8th Edition by Fisk and Reynolds
When I stray from topic, differ from text, contradict myself, or if you just disagree with my comments, make this an item for discussion. Please leave and share your comments and questions on this blog
Prior to each class please read the class text and email me a one page summary of major points, and suggest items you would like to discuss or for further clarification.
Grades will be based on the best 3 summaries of text, best 3 of 5 questions in mid-term and best 3 of 5 questions in the final. Final and mid-term will be take-home and submitted by e-mail. You may prepare your responses to class text, final and mid-term as a group of no more than 3 if requested in advance.
Class 1
Text; Construction Project Management by Gould and Joyce
Chapter 1; The Construction Industry
Chapter 2; Project Participants
We will be discussing Construction Management from the perspectives of major participants;
Owner
Lender
Designer/Engineer/Architect
General Contractor
Sub-Contractors
Regulatory Authorities
Class 2
Text Construction Project Management by Gould and Joyce
Chapter 6: Construction Services During Design
Architect/Engineer
Construction/Project Manager
Consultants
Design-Build and Turn Key approach
Chapter 7: Bidding and Procurement
Construction Documents and Bid Package
Bid Analysis and Documentation
Contractual and Legal issues
We will also look at various project delivery systems;
Owner as General Contractor
Developer as Project Manager/General Contractor
Single General Contractor and Multiple Prime Contractor
Federal, State, Municipal constraints
Class 3
Text from Construction project Administration 8th Edition by Fisk and Reynolds;
Chapters 2, 3 and 4.
The role of the Resident Project Representative as the on-site eyes and ears of the Owner/CM/Arch-Eng.
The RPR may be a direct employee of the CM or the Arch-Eng, but ultimatly their role is the conduit for all information between site and the owners project team.
Chapter 2;
Owners Resident Project Representative Authority:
Area of responsibility,
limitations on resposibility,
chain of command.
Inspection and Inspectors:
In place materials testing. Required inspections.
Reports and documentation.
Chapter 3;
Owners Resident Project Representative Responsibilities:
On site management.
Information management.
Chapter 4;
Owners Resident Project Representative Records and Reports:
Documentation, documentation, documentation,...
Class 4
Text will be Gould and Joyce
Chapter 8
Construction and Closeout General Contractor Construction
Management:
Sub-Contracts
Construction Manpower Management
Staff Site Organization
Job Site Start
Material & Equipment
Construction Productivity
Project Completion Closeout
Chapter 10
Project Planning and Scheduling
General Contractor
Construction Management:
Preconstruction Planning
Construction Scheduling
Closeout Schedule
Class 5 Planning for Construction
Also read Fisk and Reynolds Chapter 11 Risk Allocation and Liability Sharing.
Planning for Construction
We will explore using the Airport Parking Facility as a template, the General Contractor's planning and scheduling for construction activity
- Long lead time items.
- Availability of utilities
- Temporary utilities/perminent utilities.
- Workforce; GC and sub-contractor availibility.
- Work zone definitions and overlap by trade.
- Off-site and on-site traffic control; material, equipment and workforce.
- Work task dependencies.
- Environmental controls
- Local regulations and site specific regulatory requirements.
- Local weather conditions.
- Critical event time limitations.
- Off-site community safety.
- On-site workforce safety.
Risk reduction;
- Financial risk
- Safety
Mid Term Issued;
The mid term will be 10 questions based on the text. Select 5 questions, you may use previous assignments in your responses. Students may work in groups of no more than 3, with work submited individually and indentifiing other members of the group. Submit by email not later than midnight the day the following Wednesday.
Class 6
Text will be Gould and Joyce
Chapter 13 Construction Law and Chapter 14 Construction Safety and Health
Chapter 13
Construction Law
Construction Code
Civil Rights Legislation
Labor Law
Professional Licensing
Contract Law
Torts
Liability
Negligence
Chapter 14
Construction Safety and Health Accident prevention;
unsafe conditions,
unsafe action
OSHA Occupational Safety and Health Administration (Fed law 29 CFR 1926.1)
Safety Programs
Hazard Identification
OSHA enforcement, investigation
Criminal and civil penalties.
Class 7
Assignment due prior to class;Using Excel prepare a horizontal bar graphic schedule for the Airport Parking Facility.The drawing set for this project in .tifFor guidance please read Fisk and Reynolds Chapter 13 "Bar Charts".
Text Fisk and Reynolds
Chapter 19 Changes and Extra Work,
Chapter 20 Claims and Disputes;
Changes and Extra Work Contract Modifications;
Changes to extent of work
Changes in time
Changes in component and materials
Owner requested changes;
Architect/Engineer requested changes
General Contractor requested changes
Evaluating change order requests;
Cost impact
Time impact
Impact on other activities and components
Change order procedure;
Identify need/reason for change
Change description
Documents and submitals required to support/complete change
Secondary, ripple effect of change Change to contract value, and unit costs Submital and approval procedure.
Claims and Disputes
Contract defines procedures for dispute resolution, but may not cover all issues;
The contract documents including the bid document, construction documents and documents and directions produced during construction must be considered in entirety in resolving disputes between the parties to a contract, with the most current document having precedence.
Type of Dispute
Owner caused delays
Owner scheduling changes
General Contractor caused delays
Site condition changes
Weather conditions
Labor disputes
3rd party delays;
component,
material suppliers,
transportation delays
Regulatory issues
Change order disputes
Conflicts,
errors and omissions in contract documents
Class 8
Site organization; Airport Parking Facility
Assignment due before class:
Assume 9 month project schedule, prepare a workforce/equipment/materials needs preliminary schedule with one week intervak;
Using the bar chart format from the previous schedule assignment, prepare preliminary schedules for the Airport Parking Facility showing weekly project needs over an assumed 9 month project duration, for; Workforce/subcontractors(survey/layout, excavator, plumbing, electrical, landscape,....)
Materials (soils, concrete, fencing, pipe, light poles,....) Equipment (graders, back-hoe, tri-axle trucks, post holers, bucket trucks,...)
don't worry about small tools.
At this stage don't worry about quantities.
Open the slideshow in unionsquarechesterpa.blogspot.com for a visual record of equipment, materials and workforce.
(Link at bottom of this page.)
Workforce/subcontractor schedule
Equipment schedule
Materials schedule
Inspection schedule
Cash flow/payment voucher
Class 9
Site organization Airport Parking Facility;
Workforce/subcontractor;
-Identify subcontracts,
required documentation,
submitals and inspections.
-Identify cash flow demands.
-Equipment only subcontracts.
-Labor only subcontracts.
-Material only subcontracts.
-Complete labor, equipment & material subcontracts.
Equipment;
-Subcontactor on site equipment needs;
security,
storage,
staging,
conflicts,
duplication.
-General Contractor on site equipment needs,
subcontractor use of GC equipment.
Materials;
-Subcontractor on site material needs, and disposal
-Subcontractor controlled materials
-General Contractor controlled materials
Inspection schedule;
-Public agency required inspections.
-3rd party inspections
Assignment;
Cash flow; Assume payment voucher each month (last day of month), with voucher payment turn around of two weeks (mid next month), and subcontractor payment two weeks latter (last day of month).
Using weekly massing on the various schedules as analogous to dollar value, produce a chart showing dollar value for work on site (sum of workforce, materials and equipment).
Discuss time shift effect on voucher payment and subcontractor payment on project cash flow.
The analogy is not truly correct, all activities don't have equal dollar value, but useful for a generalized view of cash flow.
Class 10
Airport Parking Facility Materials and Components;
Construction sites when run efficiently require materials and components to be available "just in time".
On site delivery schedules are driven by the on site work needs, and availability of on site secure storage, and need to minimize handling.
The earliest and latest date for on site delivery becomes the critical organizing feature of the supply stream; storm sewer manholes will have a setting date based on grading and trenching activity, the manhole requires a crane or track hoe with hoist chain to position, the supplier must schedule manufacture including side cut out locations and top cone type for delivery.
Assignment; Identify materials and components required for the work of the contract. Create a chronology for material delivery; earliest date for on site delivery, latest date for on site available for use.
Don't worry about quantity, but consider relative magnitude of the different elements; soils, stone and paving material have a larger volume than light poles.
Delivery and storage of the large volume elements will have a greater site organization implication.
For class 11 we will be returning to Gould and Joyce; Chapter 11.
It may be helpful to have a quick read through of chapter 11 for some insight into the week 12 assignment.
Class 11
Airport Parking Facility
Projects typically have multiple sub-contractors, this week we will review the organization, scheduling and interactions between sub-contractors.
The material delivery chronology from assignment 12 will be used as an organizing feature around which we will look at earliest start date and latest completion date for subcontractor activities.
The work of each subcontractor may be separated into a subset of tasks with dependencies and precedents linking the task to the work of other subcontractors.
Assignment; This is the final assignment before the semester final; Prepare a subcontractor and material chronology for paving and curbing, assume all sub grade work is complete, show earliest start and latest completion for each task.
Final
The final will be 10 questions based on the text, schedules you have prepared and the Airport Parking Facility drawings. Select 5 questions, you may use previous assignments in your responses.
When I stray from topic, differ from text, contradict myself, or if you just disagree with my comments, make this an item for discussion. Please leave and share your comments and questions on this blog
Prior to each class please read the class text and email me a one page summary of major points, and suggest items you would like to discuss or for further clarification.
Grades will be based on the best 3 summaries of text, best 3 of 5 questions in mid-term and best 3 of 5 questions in the final. Final and mid-term will be take-home and submitted by e-mail. You may prepare your responses to class text, final and mid-term as a group of no more than 3 if requested in advance.
Class 1
Text; Construction Project Management by Gould and Joyce
Chapter 1; The Construction Industry
Chapter 2; Project Participants
We will be discussing Construction Management from the perspectives of major participants;
Owner
Lender
Designer/Engineer/Architect
General Contractor
Sub-Contractors
Regulatory Authorities
Class 2
Text Construction Project Management by Gould and Joyce
Chapter 6: Construction Services During Design
Architect/Engineer
Construction/Project Manager
Consultants
Design-Build and Turn Key approach
Chapter 7: Bidding and Procurement
Construction Documents and Bid Package
Bid Analysis and Documentation
Contractual and Legal issues
We will also look at various project delivery systems;
Owner as General Contractor
Developer as Project Manager/General Contractor
Single General Contractor and Multiple Prime Contractor
Federal, State, Municipal constraints
Class 3
Text from Construction project Administration 8th Edition by Fisk and Reynolds;
Chapters 2, 3 and 4.
The role of the Resident Project Representative as the on-site eyes and ears of the Owner/CM/Arch-Eng.
The RPR may be a direct employee of the CM or the Arch-Eng, but ultimatly their role is the conduit for all information between site and the owners project team.
Chapter 2;
Owners Resident Project Representative Authority:
Area of responsibility,
limitations on resposibility,
chain of command.
Inspection and Inspectors:
In place materials testing. Required inspections.
Reports and documentation.
Chapter 3;
Owners Resident Project Representative Responsibilities:
On site management.
Information management.
Chapter 4;
Owners Resident Project Representative Records and Reports:
Documentation, documentation, documentation,...
Class 4
Text will be Gould and Joyce
Chapter 8
Construction and Closeout General Contractor Construction
Management:
Sub-Contracts
Construction Manpower Management
Staff Site Organization
Job Site Start
Material & Equipment
Construction Productivity
Project Completion Closeout
Chapter 10
Project Planning and Scheduling
General Contractor
Construction Management:
Preconstruction Planning
Construction Scheduling
Closeout Schedule
Class 5 Planning for Construction
Also read Fisk and Reynolds Chapter 11 Risk Allocation and Liability Sharing.
Planning for Construction
We will explore using the Airport Parking Facility as a template, the General Contractor's planning and scheduling for construction activity
- Long lead time items.
- Availability of utilities
- Temporary utilities/perminent utilities.
- Workforce; GC and sub-contractor availibility.
- Work zone definitions and overlap by trade.
- Off-site and on-site traffic control; material, equipment and workforce.
- Work task dependencies.
- Environmental controls
- Local regulations and site specific regulatory requirements.
- Local weather conditions.
- Critical event time limitations.
- Off-site community safety.
- On-site workforce safety.
Risk reduction;
- Financial risk
- Safety
Mid Term Issued;
The mid term will be 10 questions based on the text. Select 5 questions, you may use previous assignments in your responses. Students may work in groups of no more than 3, with work submited individually and indentifiing other members of the group. Submit by email not later than midnight the day the following Wednesday.
Class 6
Text will be Gould and Joyce
Chapter 13 Construction Law and Chapter 14 Construction Safety and Health
Chapter 13
Construction Law
Construction Code
Civil Rights Legislation
Labor Law
Professional Licensing
Contract Law
Torts
Liability
Negligence
Chapter 14
Construction Safety and Health Accident prevention;
unsafe conditions,
unsafe action
OSHA Occupational Safety and Health Administration (Fed law 29 CFR 1926.1)
Safety Programs
Hazard Identification
OSHA enforcement, investigation
Criminal and civil penalties.
Class 7
Assignment due prior to class;Using Excel prepare a horizontal bar graphic schedule for the Airport Parking Facility.The drawing set for this project in .tifFor guidance please read Fisk and Reynolds Chapter 13 "Bar Charts".
Text Fisk and Reynolds
Chapter 19 Changes and Extra Work,
Chapter 20 Claims and Disputes;
Changes and Extra Work Contract Modifications;
Changes to extent of work
Changes in time
Changes in component and materials
Owner requested changes;
Architect/Engineer requested changes
General Contractor requested changes
Evaluating change order requests;
Cost impact
Time impact
Impact on other activities and components
Change order procedure;
Identify need/reason for change
Change description
Documents and submitals required to support/complete change
Secondary, ripple effect of change Change to contract value, and unit costs Submital and approval procedure.
Claims and Disputes
Contract defines procedures for dispute resolution, but may not cover all issues;
The contract documents including the bid document, construction documents and documents and directions produced during construction must be considered in entirety in resolving disputes between the parties to a contract, with the most current document having precedence.
Type of Dispute
Owner caused delays
Owner scheduling changes
General Contractor caused delays
Site condition changes
Weather conditions
Labor disputes
3rd party delays;
component,
material suppliers,
transportation delays
Regulatory issues
Change order disputes
Conflicts,
errors and omissions in contract documents
Class 8
Site organization; Airport Parking Facility
Assignment due before class:
Assume 9 month project schedule, prepare a workforce/equipment/materials needs preliminary schedule with one week intervak;
Using the bar chart format from the previous schedule assignment, prepare preliminary schedules for the Airport Parking Facility showing weekly project needs over an assumed 9 month project duration, for; Workforce/subcontractors(survey/layout, excavator, plumbing, electrical, landscape,....)
Materials (soils, concrete, fencing, pipe, light poles,....) Equipment (graders, back-hoe, tri-axle trucks, post holers, bucket trucks,...)
don't worry about small tools.
At this stage don't worry about quantities.
Open the slideshow in unionsquarechesterpa.blogspot.com for a visual record of equipment, materials and workforce.
(Link at bottom of this page.)
Workforce/subcontractor schedule
Equipment schedule
Materials schedule
Inspection schedule
Cash flow/payment voucher
Class 9
Site organization Airport Parking Facility;
Workforce/subcontractor;
-Identify subcontracts,
required documentation,
submitals and inspections.
-Identify cash flow demands.
-Equipment only subcontracts.
-Labor only subcontracts.
-Material only subcontracts.
-Complete labor, equipment & material subcontracts.
Equipment;
-Subcontactor on site equipment needs;
security,
storage,
staging,
conflicts,
duplication.
-General Contractor on site equipment needs,
subcontractor use of GC equipment.
Materials;
-Subcontractor on site material needs, and disposal
-Subcontractor controlled materials
-General Contractor controlled materials
Inspection schedule;
-Public agency required inspections.
-3rd party inspections
Assignment;
Cash flow; Assume payment voucher each month (last day of month), with voucher payment turn around of two weeks (mid next month), and subcontractor payment two weeks latter (last day of month).
Using weekly massing on the various schedules as analogous to dollar value, produce a chart showing dollar value for work on site (sum of workforce, materials and equipment).
Discuss time shift effect on voucher payment and subcontractor payment on project cash flow.
The analogy is not truly correct, all activities don't have equal dollar value, but useful for a generalized view of cash flow.
Class 10
Airport Parking Facility Materials and Components;
Construction sites when run efficiently require materials and components to be available "just in time".
On site delivery schedules are driven by the on site work needs, and availability of on site secure storage, and need to minimize handling.
The earliest and latest date for on site delivery becomes the critical organizing feature of the supply stream; storm sewer manholes will have a setting date based on grading and trenching activity, the manhole requires a crane or track hoe with hoist chain to position, the supplier must schedule manufacture including side cut out locations and top cone type for delivery.
Assignment; Identify materials and components required for the work of the contract. Create a chronology for material delivery; earliest date for on site delivery, latest date for on site available for use.
Don't worry about quantity, but consider relative magnitude of the different elements; soils, stone and paving material have a larger volume than light poles.
Delivery and storage of the large volume elements will have a greater site organization implication.
For class 11 we will be returning to Gould and Joyce; Chapter 11.
It may be helpful to have a quick read through of chapter 11 for some insight into the week 12 assignment.
Class 11
Airport Parking Facility
Projects typically have multiple sub-contractors, this week we will review the organization, scheduling and interactions between sub-contractors.
The material delivery chronology from assignment 12 will be used as an organizing feature around which we will look at earliest start date and latest completion date for subcontractor activities.
The work of each subcontractor may be separated into a subset of tasks with dependencies and precedents linking the task to the work of other subcontractors.
Assignment; This is the final assignment before the semester final; Prepare a subcontractor and material chronology for paving and curbing, assume all sub grade work is complete, show earliest start and latest completion for each task.
Final
The final will be 10 questions based on the text, schedules you have prepared and the Airport Parking Facility drawings. Select 5 questions, you may use previous assignments in your responses.
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