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A non-load bearing timber stud partition separates two bedrooms on the first floor of a two storey dwelling house, as shown in the accompanying sketch - Leaving Cert Construction Studies - Question 5 - 2010
Question 5
A non-load bearing timber stud partition separates two bedrooms on the first floor of a two storey dwelling house, as shown in the accompanying sketch. The first flo... show full transcript
Worked Solution & Example Answer:A non-load bearing timber stud partition separates two bedrooms on the first floor of a two storey dwelling house, as shown in the accompanying sketch - Leaving Cert Construction Studies - Question 5 - 2010
Step 1
To a scale of 1:5, draw a vertical section through the floor and stud partition.
Answer
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Draw the Base: Start with the outline of the tongued and grooved floor. Indicate the first floor joists, ensuring they are aligned vertically.
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Position the Plasterboard Ceiling: Above the floor joists, draw the plasterboard ceiling layer.
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Add the Stud Partition: Illustrate the vertical stud wall, indicating both the top and bottom connections to the floor and ceiling. Label the stud size as 70 mm x 20 mm.
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Include the Door and Saddle: Draw the door frame at the appropriate height and mark the door as a standard flush internal door (110 mm x 44 mm) in the section. Make sure the door saddle (typical 15 mm) is represented.
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Label Components: Clearly label each component (e.g., plasterboard ceiling, floor joists, timber stud frame, skirting boards) with their respective dimensions:
- Plasterboard ceiling: typical sizes (12 mm)
- Floor joists: 225 mm x 50 mm
- Stud frame: 70 mm x 20 mm
- Skirting board: typical 120 mm x 20 mm
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Final Touches: Use a ruler to create a clean, easy-to-read drawing, ensuring all labels are legible.
Step 2
Show on your drawing one method that will help reduce the transmittance of sound through the stud partition.
Answer
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Fitting Rigid, Semi-Rigid or Flexible Mineral Wool Between Studs: This method improves acoustic insulation by filling the spaces between the studs with the appropriate material, helping to dampen sound transmission.
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Using Sealing Tape: Apply acoustical sealing tape between the stud partition and surrounding walls to prevent sound leakage through gaps.
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Fitting Acoustic Plasterboard: Replace standard plasterboard with acoustic plasterboard on the partition, as it is specifically designed to reduce sound transmission.
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Staggered Joints: When installing plasterboard, ensure that the joints are staggered to avoid sound pathways through the partition.
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Fitting Barrier Mats or Grommets Around Openings for Pipes: This prevents unwanted noises from traveling through pipe openings.
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Constructing a Double Stud Partition Wall with Acoustic Guilt: This provides a more robust solution for sound isolation.
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Using Proprietary Sound Proofing Material: Consider options such as soundproofing blankets or specialized foam that is installed within or adjacent to the stud partition.