Getting a cable from A to B is simple... right? Did you know that if you drill a hole in a joist in the wrong place you can weaken it? Or that a building inspector can refuse to sign off a new build if holes are in the wrong places? Guest presenter Ross Howell takes us through the positions where we can drill a hole and where we can't, giving us all the information we need to know to keep our electrical installations compliant with BS 7671 and the Building Regulations. ==========================
6:08
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Getting a cable from A to B is simple... right? Did you know that if you drill a hole in a joist in the wrong place you can weaken it? Or that a building inspector can refuse to sign off
Getting a cable from A to B is simple... right? Did you know that if you drill a hole in a joist in the wrong place you can weaken it? Or that a building inspector can refuse to sign off a new build...
20.4K viewsJul 19, 2023
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How to fix your timber joist in place like a pro. Using this trick it will allow you to install joist on your own with ease and havent got to worry about it dropping to the ground. Using the 355 spacer will also keep your 400ceneteres #carpentry #woodworker #howto #fyp #trick #construction #building #carpenter #tip #diy #homediy | Pin point Carpentry
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How to fix your timber joist in place like a pro. Using this trick it will allow you to install joist on your own with ease and havent got to worry about it dropping to the ground. Using the 355 spacer will also keep your 400ceneteres #carpentry #woodworker #howto #fyp #trick #construction #building #carpenter #tip #diy #homediy | Pin point Carpentry
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🔍 Sometimes drilling a hole through a joist is unavoidable – it’s all about knowing the right spot! ✅ Size matters: Max hole or notch = 1/5 of joist depth OR 32 mm (whichever is less). ✅ Put it in the right place: Holes only within 3 × depth from the face of a support In the middle third of the joist depth Notches no more than 450 mm from a support ✅ Space them out: Holes and notches must be at least one depth apart. Share this with your sub-contractors before they start drilling to save headac
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🔍 Sometimes drilling a hole through a joist is unavoidable – it’s all about knowing the right spot! ✅ Size matters: Max hole or notch = 1/5 of joist depth OR 32 mm (whichever is less). ✅ Put it in the right place: Holes only within 3 × depth from the face of a support In the middle third of the joist depth Notches no more than 450 mm from a support ✅ Space them out: Holes and notches must be at least one depth apart. Share this with your sub-contractors before they start drilling to save headac
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Drilling Holes in Joists to run Cables (wires) Through Installation Considerations inc Calculations EAL Awards City & Guilds Student training aid for where to drill joists so cables (wiring) can be run safely includes examples of the calculations. Full demonstration on how to measure and mark out drilling area as well as the drilling of the joist. How to drill holes in joist and where to drill them according to BS 7671 Wiring Regulations. Videos are training aids for City and Guilds (C and G) an
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🔍 Sometimes drilling a hole through a joist is unavoidable – it’s all about knowing the right spot! ✅ Size matters: Max hole or notch = 1/5 of joist depth OR 32 mm (whichever is less). ✅ Put it in the right place: Holes only within 3 × depth from the face of a support In the middle third of the joist depth Notches no more than 450 mm from a support ✅ Space them out: Holes and notches must be at least one depth apart. Share this with your sub-contractors before they start drilling to save headac
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🔍 Sometimes drilling a hole through a joist is unavoidable – it’s all abou…
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Drilling Holes in Joists to run Cables (wires) Through Installation Considerations inc Calculations EAL Awards City & Guilds Student training aid for where to drill joists so cables (wiring) can be run safely includes examples of the calculations. Full demonstration on how to measure and mark out drilling area as well as the drilling of the joist. How to drill holes in joist and where to drill them according to BS 7671 Wiring Regulations. Videos are training aids for City and Guilds (C and G) an
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