main trap

building trap, main trap

building trap
A running trap on the outlet side of a building drain (on the sewer side of all drain connections); prevents the passage of odors between the common sewer and the plumbing of the building.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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There are several makes, models, and brands of the four main trap types.
Running the TRAPLINE: Both for wildlife management and as a source of income, fur trapping has a productive history as a useful homesteading skill
The second main trap component, the "trap box," is an approximate cube with extensions on the bottom to fit securely over the speaker box.
Crowding appeared to agitate the flies and increase the chances that they left the holding jar assembly and returned to the main trap box, which could increase the probability of an escape.
A new live trap for the acoustically orienting parasitoid fly Emblemasoma erro (Diptera: Sarcophagidae)
The main trap the new government must avoid is a return to a heavily paternalistic style of governance.
Erdogan is back on track
The main trap orifice is operated by a float and linkage that responds to condensate level, regardless of condensate temperature.
Low pressure steam heating systems: steam characteristics, design ideas, installation practices and components are described to aid in proper steam system design
But there is a clear global distinction between diplomacy and violence, and this is the main trap for those whom "the moderates" call radical.
Annapolis Opens All World Fronts: Diplomacy Vs Violence; Moderates Vs Radicals, Etc
The main trap fisheries in Australia are for western rock lobster (Panulirus cygnus) in Western Australia and southern rock lobster (Jasus edwardsii) along the southern coastline.
Maori octopus (Octopus maorum) bycatch and southern rock lobster (Jasus edwardsii) mortality in the South Australian rock lobster fishery
It was found that the main traps for absorbing hydrogen in them are the intercrystalline boundaries and the vacant positions of carbon in nc-SiC.
Layers of Nanocrystalline SiC as a New Type of Solid-State Hydrogen Storage
They feel exhausted or anxious because they can't find real love, and such women frequently get caught in three main traps, or what I call "romance disorders," to compensate for what they consider unbearable feelings of anxiety when it comes to love and sex.
Seeking sex by any means necessary: how to get control of your romantic life without giving up on love
Here are some of the main traps and how to avoid them.
Mail Money: They're taking a loan of you

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