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Found 139 results for the keyword ‘Safety’

  • Scientists in Quebec take stands on both sides of the EMF debate.

    Follow this link for a background and an overview of the debate on EMF and human health. The debate is strong in Québec.  A large group of scientist and engineers worried about what they consider the unfounded public outcry against wireless progress published a letter in the newspaper LeDevoir o...
  • My 20 x 20 ceiling is dipping down dangeriously.

    One viewer who caught my camera in a renovation store asked what to do about the 20 x 20 ceiling in his condo that was dipping down in the centre. A serious visible dip must be caused by someone having removed a support wall from the original construction. Each floor is designed to remain flat a...
  • What kind of deicer is safe for concrete?

    No de-icer is perfectly safe for concrete. Why? Because you are melting ice while the general temperature is below zero, allowing both water and some kind of chemical to flow into the concrete itself and refreeze shortly after. De-icers should not be used on new concrete -- wait until it is at le...
  • OVERVIEW: Electromagnetic radiation and your health: THE DEBATE

    ------------------------------------------------------------------------------------- Update Dec. 2019:  The US Supreme Court just rejected an appeal of a lower court decision maintaining the legality of the city of Berkely, California’s ordinance passed in May of 2015 obliging all retail seller...
  • How long should a ladder be? and How far from the wall?

    Dave from Ottawa writes : Is there a formula to determine the correct length of an extension ladder for a particular application? I suppose one should consider what is a safe overlap of the ladders, the length a ladder should extend beyond the point of contact where it touches the edge of the roo...
  • Why hire a professional electrician?

      People ask me for professional recommendations and I shy away from doing too much of that.  But the company Electrika is worth a special mention.  First they are competent at doing things right.  Second they are great at trouble shooting and figuring out problems.  You will be won over by thei...
  • Can a booster fans be used for the clothes dryer?

    There do exist in-line booster fans that can be used with clothes dryers for long duct runs. But you cannot use just any fan for this purpose. The fan motor and fan blades must be designed to handle the temperature of the dryer exhaust and prevent a build up of lint on a hot motor that could cau...
  • A safety correction about penetrating oils and propane torches.

    David from Victoria, British Columbia is a safety officer in his workplace. Last year he saw me putting penetrating oil on a rusted nut and then heating it with a propane torch to break it loose. Bad stuff he says. Heating oils like that can be very bad for your health, as was the case of a custo...
  • TIP - Loosening rusted bolts

    When it comes to loosening rusted bolts, some ways are more ecologically friendly than others. Heat Simply heating the nut will sometimes expand it before the bolt heats up, breaking the rust lock and allowing it to come off. Chemicals Lubricants and ordinary oils will not break the bonds of ...
  • How to stabilize a floor made out of only 2x4's.

    Pat has an 80 year old house and the previous owner built an addition onto it. The floor is tiled and when Pat looked underneath the floor to find out why it was so bouncy, she discovered (see the photo) that the floor joists were 2x4's turned flat! That's not a floor, that's a trampoline, and on...