HW#2 Production Rates S23

Name: PUT YOUR NAME IN THIS CELL CM 4510 Scheduling Construction Projects Spring 2023 HW #3 Assignment Due Thursday 2/9/23 at 11:59 PM to D2L Discuss the reasons for your choice. I would use quarters as the unit of time used in the based contract schedule. a. What is the daily production rate of a 8 person crew consisting of 2 foremen and 6 laborers if each person can install 1,024 square feet of exterior sheathing per day? 1,024 x 8 = 8192 sq. ft. of exterior sheeting per day. Per crew day per crew b. How many days would it take if the same crew needed to install densglass sheathing on the exterior walls of 8 office buildings with dimensions of 75' wide, 200' long and 20' high? Assume the buildings are rectangular, and the production rate found in (a.) is the same regardless of height. (2 x (75+200)) x 20 = 11,000 sq.ft. per building 11,000 x 8 = 88,000 sq.ft. 88,000/ 8192 = 10.74 days about 11 days c. Using the same duration found in (b.) adjust the overall time if two laborers of the crew failed to show up on the first Friday because they went out with the Super on Thursday and couldn't handle it… How many days are lost, or hours, using 8 hour work days if the original work started on a Monday? Monday through Thursday = full crew = 4 x 8192 = 32768 sq. ft Friday = 6 workers out of 8 = 6/8 x 8192 = 6144 sq ft. 88,000 - 32768 - 6144 = 49,088 sq.ft Total days = 6 + 1 + 4= 11 days and 2 hours lost (2/8)x8= 2 d.Continuing with the same example, it rains the crew out for 3 days (M,T,W of week 2), are there enough weeke days to make up the lost time (including (c.)) if trying to achieve the original finish date found in (b.)? Why or why not? (Show your work) Would you, as the project manager, implement this make up? What are some of the factors involved in making such a decision? There is enough weekend days to make p for the lost time. As the project manager I would implement Some factors that would be involved in the decision would be the amount of time available and the am 1. A contractor has obtained the contract for a large project which is expected to last for five years. As a scheduling consultant what time interval (unit of time) might you suggest for the base contract schedule? 2. Show your work and Solve the following: 3. A small one-story commercial building is to be constructed on the site of an existing small frame struct

It is 30 ft by 60 ft in plan. The exterior and interior walls are of concrete block. The roof is comprised of bar joists on long-span girders covered with a steel roof deck, rigid insulation, and built- The ceiling is a suspended acoustical tile. The floor is a concrete slab on grade with VCT tile finish. Interior finish on all walls is paint. The project has been broken down into 18 steps and a construction time estimate has been made for each as follows. These steps are not in any particular order. Time is of the essence, so a 6 day work week should be established from the beginning. Draw a bar chart using Excel for this project. # # # It is assumed that these services will be brought in under the structure within the 30 ft widt # # # # # casting and finishing of the floor slab. # # of rough plumbing above the floor slab, vents # and the installation of the sink and water closet # # # # # # # 4. Using the data below, construct an AON diagram buy placing the activities in the proper sequence. Show the redundant dependencies (if any) in your drawing by providing an alternative relationship line type. After completing the AON diagram, answer the questions below. Use the cells in Excel, with borders, shading, an Activity Depends Upon Activity X X S B X, K C B, H Activity S Activity k D H W G, K Demolition -- Including the demolition of the present structure, removal of debris, and rough g Foundations -- The construction of the foundation for the new structure. Underground Services -- The installation of water and sewer service from mains in the street. Exterior Walls - - The construction of the exterior block walls. Interior Walls -- The construction of the interior block walls. Roof Steel -- Includes the installation of the long-span girders, the bar joists, and the steel roof Roof Finish - - Includes the installation of the rigid insulation on the steel deck and the installati Floor Slab -- Assumed to include fine grading, sand fill and compaction, membrane waterproo Floor Finish -- Includes the installation of vinyl composition tile and base molding. Rough Plumbing and Heating -- Includes the setting of the heating unit and rough ductwork, t Finish Plumbing and Heating -- Includes the final installation of the heating radiators, controls Rough Electrical -- The installation of conduit, service inlet and meter box Finish Electrical -- The installation of wire and fixtures. Rough Carpentry -- The installation of rough door frames, display window framing, etc. Finish Carpentry -- The installation of door trim, hanging of doors, etc. Ceiling -- The installation of the suspended acoustic ceiling. Display Windows -- The installation of the display window glass and metal trim. Paint -- Painting of interior walls and trim.

49,088/8192 = 5.992 days which is about 6 days end this make up. mount of work that still needs to be completed. ture.

-up roofing. M T W TH Time: 2 days Time: 3 days Time: 1 day th. Time: 8 days Time: 4 days Time: 2 days Time: 4 days Time: 3 days Time: 2 days Time: 3 days Time: 4 days Time: 3 days Time: 5 days Time: 3 days Time: 4 days Time: 3 days Time: 2 days Time: 3 days nd lines to complete this AON diagram. Activity B Activity C Activity H Activity D Activity F grading of the site. f deck. tion of the built-up roofing. ofing, the installation s, and so on,

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