#TechnicalThursday In today's technical corner, we are having a closer look at the Part B of the Building Regulations. ⚡ Many Electrical Engineers may not be aware that Part B of the Building Regulations - Fire Safety in Buildings other than Dwellings, has a dedicated subsection regarding requirements for lighting diffusers. This applies to where a lighting diffuser is made from a thermoplastic and the fitting is recessed and the diffuser forms part of a suspended ceiling. The reason behind this is because ceilings are tested to determine how quick a fire can spread across them, whereas installing thermoplastic lighting diffusers introduces a potential weak point on the ceiling where fire can potentially spread quicker. 💡 Part B states thermoplastic lighting diffusers should not be used in fire-protecting suspended ceilings or fire-resisting ceilings unless they have been satisfactorily tested as part of the ceiling system that is to be used to provide the appropriate fire protection. It also restricts the use of thermoplastic diffusers that form part of the ceiling in protected stairways. 🚨 Apart from the above, there are no restrictions on TP(a) rated diffusers. However, TP(b) rated luminaire diffusers do have restrictions and the limits on their usage can be found in the extracts below from section 2.3.3 of Part B of the Building Regulations. When doing lighting designs and specifications engineers should always be aware of the TP rating of the diffusers for recessed fittings and ensure the design is compliant with Part B. #MEPdesign #electrical #TechCorner #AxisengExpertise Gavin Wilde
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🚩 5 Things You Shouldn't Do when Installing a Fireplace into your Design project this Fall 🚩 1. Neglecting Proper Ventilation: Ensuring adequate ventilation is crucial for a safe and functional fireplace. Without expert knowledge, designers might overlook critical factors like vent placement and clearance, leading to dangerous smoke buildup or inefficient operation. 2. Misjudging Electrical and Gas Requirements: Fireplace installations often involve complex electrical and gas connections that need precise handling. Designers may not always have the expertise to assess and implement these requirements correctly, leading to potential safety hazards or operational issues. Relying on experts ensures that all connections are properly installed and compliant with safety standards. 3. Incorrect Sizing and Placement: Choosing the right size and location for a fireplace involves more than aesthetics. An expert understands how to balance heating needs, room dimensions, and structural integrity to avoid problems like inefficient heating or compromised safety. 4. Forgetting About Insulation and Heat Barriers: Proper insulation and heat barriers are essential to prevent damage to surrounding materials and ensure safe operation. Designers might miss these details, risking costly repairs or hazardous conditions. 5. Ignoring Post-Installation Maintenance: Fireplace installations require ongoing maintenance for optimal performance and safety. Experts not only handle the installation but also provide guidance on maintenance schedules and checkups, which designers might overlook. This is why it is critical to consult a fireplace expert for your upcoming fireplace projects this fall! Visit https://lnkd.in/e89panaZ to book a consultation today.
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🚩 5 Things You Shouldn't Do when Installing a Fireplace into your Design project this Fall 🚩 1. Neglecting Proper Ventilation: Ensuring adequate ventilation is crucial for a safe and functional fireplace. Without expert knowledge, designers might overlook critical factors like vent placement and clearance, leading to dangerous smoke buildup or inefficient operation. 2. Misjudging Electrical and Gas Requirements: Fireplace installations often involve complex electrical and gas connections that need precise handling. Designers may not always have the expertise to assess and implement these requirements correctly, leading to potential safety hazards or operational issues. Relying on experts ensures that all connections are properly installed and compliant with safety standards. 3. Incorrect Sizing and Placement: Choosing the right size and location for a fireplace involves more than aesthetics. An expert understands how to balance heating needs, room dimensions, and structural integrity to avoid problems like inefficient heating or compromised safety. 4. Forgetting About Insulation and Heat Barriers: Proper insulation and heat barriers are essential to prevent damage to surrounding materials and ensure safe operation. Designers might miss these details, risking costly repairs or hazardous conditions. 5. Ignoring Post-Installation Maintenance: Fireplace installations require ongoing maintenance for optimal performance and safety. Experts not only handle the installation but also provide guidance on maintenance schedules and checkups, which designers might overlook. This is why it is critical to consult a fireplace expert for your upcoming fireplace projects this fall! Visit https://lnkd.in/e89panaZ to book a consultation today.
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Comparison between NFPA14, BS9990 and MS1495 for wet riser installation. The BS standard calls for min 8-8.5bar at the landing valve outlet, while NFPA states 6.9bar. MS1495 gives a range between 4 to 7bar; most Malaysian engineers design to 4 bar. If we use NFPA as basis, at 6.9bar, we will get 5.16bar at the nozzle inlet assuming flow rate is 950L/min at landing valve outlet and hose is 30m length @65mm diameter which would require K factor of 400 to flow 910L/min. If we use BS9990 at 8bar at 750L/min per outlet, we get about 6.88bar at the inlet with k factor 282. If we design to 4 bar at landing valve outlet, we get 3.47bar at nozzle inlet at flow rate of 500L/min with k factor of 282. So if fire flow requirement is only 500L/min per landing valve, we are alright. Otherwise, we may need to rethink our design pressure at landing valve outlet. For 20MW fire size, estimated water flow rate is 540L/min which is good for residential fire and office. But when considering industrial buildings, shopping complex, we need to think of how the fire size affects the flow rate requirement. The 950L/min using NFPA can cater for 35MW and 750L/min using BS9990 can cater for 28MW fire. Extracted from NFPA14, 2024
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⚡ COMMON DEFECT: ⚡ do you run 16mmsq SDI mains and connect to a 63A main switch? Depending on how the cable has been run, you may be in breach of AS/NZS 3000:2018 clauses 3.4.1, 2.5.3.1 and/or 2.5.1.2. Clause 3.4.1 clearly states that in residential installations, wiring systems shall be installed on the assumption that thermal insulation will be installed under floors, in walls and above ceilings where not currently installed. As such, for the purpose of cable selection the cable shall be de-rated for thermal insulation, whether or not it is there. AS/NZS 3008.1.1:2017 Table 4 Column 18 shows that for 16mmsq SDIs (in a single-phase application) partially surrounded by thermal insulation, the current-carrying capacity is 56A. For three phase SDI arrangements, it is only 50A. Where is, or where will be, a cable partially surrounded by thermal insulation? This includes: * Anywhere clipped to or under floor joists * Clipped to studs and noggins in walls (where not clipped, i.e. hanging freely in a stud wall, this is deemed _fully_ surrounded by thermal insulation with a severe de-rating); and * Clipped to ceiling joists or resting across ceiling joists. So for example: unless you keep your SDIs away from the ceiling joists by clipping them up to the rafters (which may have its own de-rating factors near the roof lining) and then dropping straight down the cavity between the brick veneer and the stud wall, you will have to de-rate to 56A or 50A, and install a 50A main switch to comply with clause 2.5.1.2 (overcurrent protection of consumer mains). Is there an easier way? For single-phase, there is: simply run 16mmsq two-core sheathed, which provides 64A partially surrounded by thermal insulation. You're out of luck for three-phase applications however, which will still only give you 54A for a three/four-core sheathed cable. To summarise: * Unless you install your cable entirely in areas where no thermal insulation can be expected to be installed, or is installed, you must de-rate your cable for partial surrounding by thermal insulation * Other than two-core sheathed cables, 16mmsq V-90 cables (and even 16mmsq X-90 cables in most cases) cannot achieve 63A partially surrounded by thermal insulation. In such cases you must provide a 50A circuit breaker for overcurrent protection (excluding other de-rating factors, which may require even lower-rated circuit breakers). Keep in mind: this is not an esoteric issue. Not applying correct de-rating factors to your consumer mains means they may operate above safe temperature limits and cause a fire. Therefore, your inspector cannot pass an installation with a 63A main switch provided for overcurrent protection of the consumer mains unless the consumer mains meet the above conditions. As always, this post contains general information which should not be relied upon. Always consult your standards, but equally, always consult us well ahead of time to ensure your installation will be compliant.
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🔍 On-Site Update: Electrical and Plumbing Inspection at Our Latest Project At The Design Algo Studio, we believe that excellence in architecture and design extends beyond aesthetics—it’s about ensuring that every aspect of a project is executed to the highest standards. Recently, our team conducted a detailed site visit to inspect the electrical and plumbing work at one of our latest projects. During this visit, we focused on: 💡 Electrical Systems: Ensuring that all wiring, outlets, and circuit installations are compliant with safety standards and meet the design specifications. 🚰 Plumbing: Verifying that the plumbing systems are properly installed, with a particular emphasis on ensuring efficient water flow, correct pipe fittings, and leak prevention measures. Such inspections are crucial to maintaining the quality and reliability of our projects, guaranteeing that our clients receive not just beautifully designed spaces, but also functional and safe environments. Stay tuned for more updates as we continue to progress on this exciting project! #thedesignalgostudio #ArchitectureVlog #SiteVisit #ElectricalInspection #PlumbingInspection #BehindTheScenes #ProjectManagement #DesignInsights
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Attn. fire protection engineers: When mechanical engineers design centralized exhaust systems for bathrooms, dryers, or residential kitchen hoods using subducts, ensure the rational analysis accounts for the exhaust fans running continuously during a fire. #MEP #FireSafety
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𝗔𝗻𝘆 𝗮𝗰𝘁𝗶𝘃𝗶𝘁𝘆 𝗼𝗻 𝘆𝗼𝘂𝗿 𝗿𝗼𝗼𝗳 𝗽𝗼𝘀𝗲𝘀 𝗿𝗶𝘀𝗸𝘀 𝘁𝗼 𝗯𝗼𝘁𝗵 𝘄𝗮𝘁𝗲𝗿𝗽𝗿𝗼𝗼𝗳𝗶𝗻𝗴 𝗮𝗻𝗱 𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗮𝗹 𝗶𝗻𝘁𝗲𝗴𝗿𝗶𝘁𝘆. Be it HVAC, generator installation, solar panels, or any type of work, the main source of leaks is not improper installation of the waterproofing but the damages caused afterward. And leaks can have substantial consequences. 𝗛𝗼𝘄 𝗺𝗮𝗻𝘆 𝗰𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝗼𝗿𝘀 𝗱𝗼 𝘆𝗼𝘂 𝗵𝗮𝘃𝗲 𝘄𝗼𝗿𝗸𝗶𝗻𝗴 𝗼𝗻 𝘆𝗼𝘂𝗿 𝗿𝗼𝗼𝗳 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝘁𝗵𝗲 𝗰𝗼𝗺𝗽𝗹𝗲𝘁𝗶𝗼𝗻 𝗼𝗳 𝘁𝗵𝗲 𝘄𝗮𝘁𝗲𝗿𝗽𝗿𝗼𝗼𝗳𝗶𝗻𝗴 𝗮𝗻𝗱 𝘁𝗵𝗲 𝗯𝘂𝗶𝗹𝗱𝗶𝗻𝗴 𝗵𝗮𝗻𝗱𝗼𝘃𝗲𝗿? The more people walking and working on a newly installed roof, the more likely you’ll have some mechanical damage that can compromise the waterproofing integrity. ➡ You can’t forbid anyone from working on your roof, but you can acknowledge the risks and take proactive steps to mitigate them. 𝗖𝗼𝗻𝘀𝗶𝗱𝗲𝗿 𝗖𝗼𝗻𝗱𝘂𝗰𝘁𝗶𝘃𝗲 𝗨𝗻𝗱𝗲𝗿𝗹𝗮𝘆𝘀 & 𝗘𝗹𝗲𝗰𝘁𝗿𝗼𝗻𝗶𝗰 𝗟𝗲𝗮𝗸 𝗗𝗲𝘁𝗲𝗰𝘁𝗶𝗼𝗻 (𝗘𝗟𝗗) Integrating Controlit Factory conductive underlays into your roofing system allows for 100% accurate Electronic Leak Detection inspections. This ensures you can 𝗮𝘀𝘀𝗲𝘀𝘀 𝘁𝗵𝗲 𝗿𝗼𝗼𝗳’𝘀 𝗶𝗻𝘁𝗲𝗴𝗿𝗶𝘁𝘆 𝗮𝘁 𝗮𝗻𝘆 𝗴𝗶𝘃𝗲𝗻 𝘁𝗶𝗺𝗲 and detect any damage before it leads to leaks. You'll be able to check your roof after installation of the waterproofing, but also after any operation on your roof and anytime you wish for Preventive Maintenance. Operations on a roof can compromise its tightness and the building's structural integrity months before it is even occupied. 🚶♀️👷♂️ Don't let leaks become a headache for your building's future. 🚫 👉 Follow for more insights on waterproofing, leak detection, and maintenance tips! #electricleakdetection #construction #architecture #design #maintenance
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Differences between Cable Containment, Cable Tray, Raceway and Trunking. Cable containment, cable tray, raceway, and trunking are all used to organize and protect cables, but they differ in design and application: 1. **Cable Containment:** This is a broad term that encompasses any structure used to contain and support cables, including cable trays, raceways, and trunking. 2. **Cable Tray:** A cable tray is an open structure with side rails that support cables. It's often used in industrial and commercial settings where cables need to be routed over long distances. 3. **Raceway:** Raceway refers to enclosed conduits or channels that protect cables from damage and provide a clean installation appearance. They can be surface-mounted or recessed into walls and ceilings, and they're common in residential and commercial buildings. 4. **Trunking:** Trunking is similar to raceway but typically larger and used for heavier-duty applications. It's often used in industrial settings or where a higher level of cable protection is required. In summary, cable containment is the general term, cable tray is an open structure, raceway is an enclosed conduit, and trunking is a heavier-duty version of raceway.
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In modern building design, the significance of Low Voltage (LV) and Extra Low Voltage (ELV) systems cannot be overstated. These systems are pivotal for the smooth operation, safety, and efficiency of electrical and MEP systems in buildings. LV and ELV systems play a vital role in illuminating spaces, distributing power, and managing advanced communication and security systems. By doing so, they elevate the overall functionality and effectiveness of buildings. These systems form the backbone for the seamless functioning and optimal performance of contemporary structures.
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