AT03_AFRICAMARIA_2.1_2.2_2.3

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Feb 20, 2024

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2.1 FEDERATED BIM MODEL OVERVIEW PROJECT OVERVIEW/SHORT DESCRIPTION: 2.1.A PROJECT TITLE Health Centre by Gannett Fleming, INC. 2.2.B PROJECT NARRATIVE The Health Centre is a patient-directed and community-based facility located in the heart of Geelong, Victoria. The experienced doctors and professionals are committed to providing aid which supports the community with cost-effective, accessible, and high quality healthcare services to individuals and families of all ages ensuring patients receive the utmost care. Providing a wide range of services, including general consultations, health checks, and minor surgical procedures. With a modern-day well-equipped facility which features spacious and comfortable wait areas, private consultation rooms, luscious green environment, and on-site carpark for the public’s convenience. 2.2.C PROJECT DESCRIPTION Project Number 056750 – Health Centre managed by the team Group 50 comprises of Kane Hourn, Maria Africa, Matt Castle, and Fahmida Mobashwer. The healthcare facility originated from three disciplinary systems: Architectural, Mechanical, and Structural. In which in combination, federated a BIM model for the purpose of this project. 2.2.D AIMS AND OBJECTIVES The project aims to identify clashes and issues found in the project and able to communicate to resolve through a systematic approach in Navisworks and Online Collaboration tools.
2.2 CLASH ISSUES HEALTH CENTRE PROJECT NO. 056750 IMAGE CLASH DESCRIPTION PRIORITY RECOMMENDATION + ASSIGN CHANGE Concrete footing from Structural BIM model to PVC Pipe of Mechanical BIM model HIGH As the concrete footing is an important element of holding the structure together, the Mechanical engineer should be informed to adjust the pipes to work around the foundation. I-Beam from Structural BIM model to Glazed windows of the Architectural BIM model HIGH As the structural beam is an element that carries the building’s load, the Architect should be informed that windows should be less in height. If windows are pre- made to this height, Structural engineer must do modifications Concrete floor from the Structural BIM model encroaches into the fire exit of the Architectural BIM model HIGH As the fire exit is designed by the Architectural team with consideration of the minimum widths required, the Structural engineer must be informed that this concrete slab should be less in size to not encroach into the fire exit. Truss frames from the Structural model to the Oval Ducts from the Mechanical BIM model HIGH As the structural framing is an element that holds up the roof structure, the Mechanical engineer must be informed to adjust Duct layout. Round ducts clashing with each other from the Mechanical BIM model HIGH Inform the Mechanical engineer that his modelled ducts are overlapping one another.
IMAGE CLASH DESCRIPTION PRIORITY RECOMMENDATION + ASSIGN CHANGE Round ducts from the Mechanical BIM model are clashing with the Stud wall from the Architectural BIM model HIGH Determine whether the intent of the Project Architect must determine whether stud walls could be lowered as in this project it is 300mm above ceiling, normally 100mm above ceiling is acceptable. This would help Mechanical engineer with space to work with Ducts as per above to be adjusted. Ceiling and Window from the Architectural BIM model MED This looks to be a drafting error as you could notice that the lighting fixtures from the mechanical model do not meet the ceiling and clash with the windows. Architectural team must raise the height of the ceiling to suit the model. Ducts from the Mechanical BIM model to the Ceiling of the Architectural BIM model HIGH As this looks like a cramped space, Architectural team and Mechanical team must coordinate if it is worth lowering the ceiling height from 2.8m to 2.4m if Mechanical engineer would require additional space. Round Duct to Air Vent from the Mechanical BIM Model to Architectural BIM model MED As air vents are normally ceiling mounted, this air vent looks like a rangehood in the hallway which is not possible. The Mechanical engineer should raise the air vent to match the ceiling height. Automatic sliding door to Ceiling in the Architectural BIM model HIGH Sliding doors are expensive and unnecessary to run through way past the ceiling height. This error will show up in door schedules and possibly a door that has been bought the wrong size. The Architect must adjust this error. Missing pipes and ducts in the Mechanical BIM model HIGH With missing pipes, the equipment bought cannot operate properly. Mechanical engineer must adjust the BIM model.
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2.3 SAFETY CHECKS 1. STAIR TURNDOWN As Per AS1428.1 Accessibility Standard Clause 11.2 (b), all stairs must have a handrail that extends a tread depth parallel to the line of stair nosing plus an additional 300mm horizontally. (Vos, 2021) With Stairs in our Architectural model, it is evident that the handrail terminates where the stair ends which does not comply and may be deemed a safety hazard.
2. BALUSTRADE OPENINGS As per the National Construction Code 3.9.2.3 Construction of barriers to prevent falls clause (c), a 125mm sphere must not pass through this gap. (Part 3.9.2 Barriers and Handrails | NCC, n.d.) Although as shown in this image, the architectural model has shown a gap of ± 279mm. With this gap, the possibilities of children falling may occur and does not fit the National Construction Code Standard. Hence, deemed a safety hazard. Possibly continuing the glass to cover this glass would be recommended to allow this to comply. 3. FIRE WALLS In the fire exit, all fire walls are fire rated and evident to show in color red. While one wall element is a regular
gypsum wall. It is common sense that this does not comply with the Fire Code, hence shall be deemed a safety issue. The Architectural team must change this wall to ensure it is specified as a Fire rated wall. 1.3.1 CLASH DETECTION WORKFLOW Traditionally, Architects are the first to give output to the model as they are the designers to the structure. Once the design has been produced, the Architect hires and hands it over to the consultants (in this case the Structural and Mechanical) wherein with their expertise, produce a suggested output to make the building feasible to build and function. Clashes normally happen either due to human error, not updated drawings and referring to a superseded, or even miscommunication between teams. In determining who is to take precedence over a clash change will depend on the reason. As the Architect whom is in- charge of the design stage, normally the consultants should design their work to suit the Architect’s schematic design drawings unless there is a structural / mechanical issue that does not make the design feasible. The structural engineer being designing to make the Architect’s work buildable, takes a great responsibility in the effectiveness of the building’s safety and stability. Manpower and materials for this are normally less flexible than Mechanical. Among the three Mechanical engineers should be flexible to adjust the pipe and duct system as long as the Architect is able to provide adequate space for these to run. Normally above ceiling to the next floor slab or even risers for high-level construction. In determining who takes precedence over the change, we would be able to determine who should be assigned to adjust the clash. There are different methods in determining a clash in Navisworks. As mentioned in Michael’s week 7 class: 1. Selecting and hiding elements to visually find the clash
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2. Enabling Sectioning to look through the structure to visually find the clash 3. Running a clash detective test. The method behind the clash detection we used to provide information regarding clash detection was 2. Enabling Sectioning to look through the structure to visually find the clash. Through personal experience, it is good to look at the model as a whole to be able to see the relationship between one element to another through different BIM models. This method requires a keen eye and experience in the field that can be used for a situational basis such as this assignment where only 10 clashes were required but normally it is best for to run through different tests to find ALL clashes in the model. For the purpose of this assignment running through tests was a little confusing as it would pick up certain elements that are not necessarily a clash. For example, Pipes going through architectural floors to reach the toilet’s water closet. Hence, we delivered through the sectioning method as it gives an overall overview of what is the relationship between one element to another. From the image above, in one section cut a few clashes can already be seen like: 1. Structural framing to pipe – a structural framing does not physically run inside a pipe as it loses its integrity as well as the pipe would not be able to produce expected flow if there is something in it. 2. Pipe to stud wall – Pipes can run into a stud wall but vertically and for a certain reason such as there could be a basin that is mounted to a wall but in this case, it is just running through the stud wall horizontally hence considered a clash. 3. Airduct to ceiling – As per the other airducts in the file, it should not drop like a rangehood. Hence mechanical engineers must adjust size and height. With being able to view the section, the writer found section method more convenient and was able to determine 10 different clashes in the model using this method which can be seen in 2.2.
REFERENCES Part 3.9.2 Barriers And Handrails | NCC n.d., ncc.abcb.gov.au, viewed 21 May 2023, <https://ncc.abcb.gov.au/editions/2016/ncc-2016-volume-two/part-39-safe-movement-and- access/part-392-barriers-and-handrails>. Vos,D. 2021. Handrail terminations at the top & bottom of stairs under AS1428.1-2021 2021, Moddex, viewed 21 May 2023, <https://moddex.com/handrail-terminations-at-the-top- bottom-of-stairs-under-as1428-1-2021/>.