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24 inches (61 cm). One of the problems with this method is that the open head joints create large holes which may not be appealing. Some maintenance workers may also inadvertently patch those holes up without realizing they are weep holes. There are some products such as aluminum vent and plastic grid that can be inserted into the weep holes to make them less conspicuous.
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will be too high for water to come out. If the angle is too flat, the mortar used in laying the bricks may drop into cavity and block the tubes. Sometimes a shallow layer of gravel is laid to prevent mortar dropping from blocking the tubes. The thickness of the plastic tube, however small, will create a small dam that allows water to pool inside the wall cavity.
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Another type of weep is a tube that can be made formed by using hollow plastic or metal. The spacing between the tubes is about 16 inches (41 cm) apart. The installation of the tubes are done at angle to allow water to drip out. If the angle is too steep, the opening hole inside the wall cavity
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The open head joint process is done by leaving out mortar from the joints. This create open holes of the same size of the typical spacing of the joints. This is the most common method and most effective way to evaporate water from the cavity. The spacing between open head joints can be done at every
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Another technique to form tubes instead of using permanent tubing material is to use oiled rods or ropes. The oiled rod or ropes will be placed and mortared into the joints. The oil prevents mortar bond and the rods or ropes can be removed after the mortar is set, creating a hole similar to the use
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A newer weep technology uses corrugated plastic to create weep channels/tunnels that form the bottom side of the bed joint of mortar. These tunnels rapidly conduct the water out of the wall through multiple weep hole openings and ensure that the water can exit at the lowest point in the wall.
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Cotton wicks can be used to form weeps. A rope of up to 12 inches (30 cm) in length is placed in the joints. The other end of the rope is extended up into the cavity wall. The cotton can absorb the moisture inside the wall and wick it to the outside, but the converse is also true - it is
94:. The cavity serves as a way to drain this water back out through the weep holes. The weep holes allow wind to create an air stream through the cavity. The stream removes evaporated water from the cavity to the outside. Weep holes are also placed above windows to prevent
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on the wall and preventing damage to the wall from the excess water weight and possible moisture damage from freeze/thaw cycles. In such cases the weeps may consist of a plastic, clay or metal pipe extending through the wall to a layer of porous
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possible for the cotton rope to wick a small amount of moisture from the outside to inside the wall. The process of evaporation is slower than with weep holes. Also, the cotton could catch fire.
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is a small opening that allows water to drain from within an assembly. Weeps are located at the bottom of the object to allow for drainage; the weep hole must be sized adequately to overcome
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The advantage of the tube type is that it is less conspicuous. However, the small holes may not allow air to circulate and vent out the moisture very well.
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Typically, weeps are arranged to direct water which may have entered an assembly from outside, back to the outside. Weeps may also be found in metal
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to escape. Automotive water pumps have weep holes to protect the bearings by letting out water that leaks past the seal.
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Corrugated plastic weeps generally blend into mortar and are less conspicuous than rope weeps.
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264:"Weep Now or Weep Later: Moisture management and risk zones for masonry"
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Small opening that allows water to drain from within an assembly
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In building construction, weeps are typically found in a
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178:Ramsey, Charles (2000). Hoke, John Ray Jr. (ed.).
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207:"COMMON WATER PUMP FAILURES & THEIR CAUSES"
182:(10th ed.). John Wiley & Sons, Inc.
163:(2nd ed.). McGraw Hill Book Company.
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110:Weep holes with plastic grid inserts
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46:Weeps may also be necessary in a
180:Architectural Graphics Standards
233:Beall, Christine (April 1991).
262:Koester, John (8 April 2014).
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161:Masonry Design and Detailing
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98:of a wooden window frame.
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159:Beall, Christine (1987).
72:interstitial condensation
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303:Geotechnical structures
235:"Installing weep holes"
298:Architectural elements
268:Construction Specifier
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242:Masonry Construction
144:Corrugated channels
119:Cotton rope wicking
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137:of a tube.
88:cavity wall
66:and glazed
292:Categories
153:References
70:to permit
37:weep-brick
273:7 October
213:28 August
33:weep hole
23:Weep hole
92:flashing
57:backfill
96:dry rot
78:Masonry
64:windows
35:, or a
247:21 May
209:. 2011
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238:(PDF)
128:Tubes
275:2016
249:2014
215:2017
184:ISBN
165:ISBN
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