I'm currently working towards an MOL learning course, and although I'm fairly sure I know the answer, I'm just after a little bit more clarification.
2007-07-10 22:32:30 · 6 answers · asked by Carl Smith 1 in Home & Garden ➔ Maintenance & Repairs
the best place for this type of cover is internally..that is inside a building ..they are designed to prevent smells from escaping ..it is normal to put a bit of grease inside one of the frame seals to create an airtight seal ...majority of these covers all so have screw fixings on the lid
2007-07-11 00:05:30 · answer #1 · answered by boy boy 7 · 0⤊ 0⤋
Inside
2007-07-11 10:05:01 · answer #2 · answered by Anonymous · 0⤊ 0⤋
OK, it is a bit obvious to say you need a manhole where you need access but you need a double seal manhole cover and frame where you want a higher level of sealing for gas. Might be flammable gas / vapours or just smelly gas. A simple manhole may provide structural integrity but leaking gas may be a safety hazard or just a nuisance.
2007-07-11 05:48:36 · answer #3 · answered by oldhombre 6 · 0⤊ 0⤋
Because its a "double" seal cover and frame, don't you use them inside, in garages for example, when there's a risk of petrol or other explosive mixtures getting into the drain?
2007-07-11 05:48:45 · answer #4 · answered by a3pacific 3 · 0⤊ 0⤋
I would have thought, inside the property where you would require a gastight seal, and when you cannot obtain the usual water seal because of sloping ground.
2007-07-11 05:52:01 · answer #5 · answered by Spanner 6 · 0⤊ 0⤋
This one seems a bit obvious, even for me. You need not install a manhole cover and frame except where you need a manhole for access....
2007-07-11 05:39:43 · answer #6 · answered by Anonymous · 0⤊ 1⤋