Corpus sync: neutrality remakes, note hygiene, datasheet relocation, transformer-split cross-refs
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title: Concrete Accessories and Embeds
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## A pre-installation conference shall be held before the first below-grade or water-retaining pour to coordinate waterstop layout, splice locations, vapor retarder sequencing, and embed positioning among the concrete, reinforcing, masonry, and MEP trades.
−## The masonry coordinator shall review the concrete drawings for dovetail slot vertical spacing against the masonry coursing before any wall containing veneer anchorage is poured. {note}
+## The masonry coordinator shall review the concrete drawings for dovetail slot vertical spacing against the masonry coursing before any wall containing veneer anchorage is poured.
# Environmental and Service Conditions {toc}
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## Waterstop Type and Profile {toc}
−### Centerbulb (ribbed) PVC or rubber waterstops shall be used at construction and contraction joints where the joint experiences little or no opening movement. {note}
+### Centerbulb (ribbed) PVC or rubber waterstops shall be used at construction and contraction joints where the joint experiences little or no opening movement.
−### Split-flange (dumbbell) or expansion-rated profiles shall be used at expansion and isolation joints where the joint opens, because a fixed centerbulb cannot accommodate that movement. {note}
+### Split-flange (dumbbell) or expansion-rated profiles shall be used at expansion and isolation joints where the joint opens, because a fixed centerbulb cannot accommodate that movement.
### The waterstop profile shall match the joint movement class shown on the Drawings.
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## Waterstop Splices and Continuity {toc}
−### Waterstops must be continuous to function; the most common field failure is a defective or omitted splice that opens a direct leakage path through the joint, so splices are inspected at every transition before the pour. {note}
+### Waterstops must be continuous to function; the most common field failure is a defective or omitted splice that opens a direct leakage path through the joint, so splices are inspected at every transition before the pour.
### Waterstop shall be continuous around the entire perimeter of each water-retaining or below-grade element.
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## Vapor Retarder Class and Thickness {toc}
−### The vapor retarder class and thickness shall be selected for the slab's intended use, with Class A under occupied slabs that receive moisture-sensitive flooring. {note}
+### The vapor retarder class and thickness shall be selected for the slab's intended use, with Class A under occupied slabs that receive moisture-sensitive flooring.
−### Vapor retarders placed under occupied slabs receiving moisture-sensitive flooring shall be ASTM E1745 Class A.
−
−### A 6-mil vapor retarder shall not be used under occupied slabs, because ACI 302.2R discourages it and it leads to flooring-adhesive and coating failures. {note}
−
```datasheet
label: Vapor retarder class (per ASTM E1745)
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```
+### Vapor retarders placed under occupied slabs receiving moisture-sensitive flooring shall be ASTM E1745 Class A.
+
+### A 6-mil vapor retarder shall not be used under occupied slabs, because ACI 302.2R discourages it and it leads to flooring-adhesive and coating failures. {note}
+
### Class A vapor retarder shall exhibit a water vapor permeance not greater than 0.01 perms per ASTM E96.
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### Each penetration through the vapor retarder shall be sealed with a prefabricated boot or membrane-compatible mastic.
−### Where the vapor retarder is placed over rigid insulation or other sharp substrate, the membrane shall be not less than 10 mil or a blotter/protection layer shall be provided, because thin membranes are punctured by sharp edges. {note}
+### Where the vapor retarder is placed over rigid insulation or other sharp substrate, the membrane shall be not less than 10 mil or a blotter/protection layer shall be provided, because thin membranes are punctured by sharp edges.
### The installed vapor retarder shall be walk-inspected for tears and holes and all defects repaired with manufacturer's tape before concrete placement.
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## Slot Material and Gauge {toc}
−### The dovetail slot material and coating shall be selected for the exposure and the required service life of the veneer attachment. {note}
+### The dovetail slot material and coating shall be selected for the exposure and the required service life of the veneer attachment.
### Dovetail slots shall be galvanized steel for typical exposures and Type 304 or 316 stainless steel where high exposure or long veneer service life is required.
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## Slot Coordination and Protection {toc}
−### Dovetail slots shall be located on the concrete drawings at the vertical spacing required by the masonry coursing, coordinated with [[sync/masonry-common-results]], because slots set at the wrong coursing module create anchor conflicts that cannot be resolved after the pour. {note}
+### Dovetail slots shall be located on the concrete drawings at the vertical spacing required by the masonry coursing, coordinated with [[sync/masonry-common-results]], because slots set at the wrong coursing module create anchor conflicts that cannot be resolved after the pour.
### Dovetail slot vertical spacing shall match the masonry coursing module shown on the Drawings [[drawing: veneer anchorage elevation]].
−### Dovetail slots shall be furnished foam-filled and the foam fill shall remain in place until the masonry contractor removes it course by course, because removing the fill early lets concrete debris enter the slot and prevents the anchors from engaging. {note}
+### Dovetail slots shall be furnished foam-filled and the foam fill shall remain in place until the masonry contractor removes it course by course, because removing the fill early lets concrete debris enter the slot and prevents the anchors from engaging.
### Dovetail slot foam fill shall not be removed before the masonry veneer is being installed.
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### Sponge rubber, cork, or closed-cell foam expansion-joint filler shall conform to ASTM D1752.
−### The filler material and thickness shall be selected for the joint width and the slab finish, with thicker filler at vehicle-accessible slabs. {note}
+### The filler material and thickness shall be selected for the joint width and the slab finish, with thicker filler at vehicle-accessible slabs.
```datasheet
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### Filler shall be continuous across the full depth and length of the joint, with butt joints in the filler tightly closed.
−### Where the joint is to receive a surface sealant, the filler depth shall leave the sealant reservoir shown on the Drawings, with the sealant itself furnished under [[sync/exterior-weather-sealants]]. {note}
+### Where the joint is to receive a surface sealant, the filler depth shall leave the sealant reservoir shown on the Drawings, with the sealant itself furnished under [[sync/exterior-weather-sealants]].
# Cast-In Inserts and Sleeves {toc}
−## Cast-in hanger inserts, sleeves, and blockouts are set before the pour to receive later trades; whether they are furnished under this scope or by the trade that uses them shall be established on the Drawings to avoid gaps and duplication. {note}
+## Cast-in hanger inserts, sleeves, and blockouts are set before the pour to receive later trades; whether they are furnished under this scope or by the trade that uses them shall be established on the Drawings to avoid gaps and duplication.
## Cast-in inserts for fire sprinkler hangers shall be located to coordinate with the hanger and sway-brace spacing required by NFPA 13.
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## After each pour containing structural anchor rods, the as-installed rod positions shall be surveyed and deviations recorded against the placement tolerance.
−## Special inspection and load testing of cast-in anchors, where required by the Building Code, shall be performed under [[sync/special-inspections-and-testing]]. {note}
+## Special inspection and load testing of cast-in anchors, where required by the Building Code, shall be performed under [[sync/special-inspections-and-testing]].
# Warranty {toc}
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## The Contractor shall repair or replace, at no cost to the Owner, leakage at waterstop joints and moisture failures attributable to defective vapor retarder installation that appear within the warranty period.