| Location: Northern Virginia
WDP was retained to investigate leakage problems with
the buildings, determine appropriate repair options, present options to
county executives, prepare plans and specifications for the selected repairs,
and manage repair efforts.
The buildings included in the scope of work consisted
of a two story brick veneer / steel stud framed office building with portions
of flat membrane roofing and sloped metal roofing as well as a two story
brick veneer / CMU backup computer center with similar roofing components.
In both buildings, leakage problems occurred in the veneer portions of
the buildings due to inadequate water management and at the roof / wall
intersections due to poor membrane attachment detailing. Other factors,
including poor masonry workmanship, inadequate sealants, and improper previous
repair work, contributed to the problems experienced.
The repair methods selected by the client included retrofit
installation of wall anchors, retrofit installation of through-wall and
stepped flashing, replacement of inadequate copings and gutters, replacement
of the flat membrane roof with a spray-applied polyurethane system, replacement
of the metal roofing with an integral batten system, full re-pointing of
the brick veneer, and application of new sealants and water repellants.
|
|
Client: County Government Agency
Our Scope of Services included:
-
Exploratory probe openings in the brick veneer wythe to evaluate
masonry flashing and weep hole systems
-
Pachometer survey to assess veneer tie installation and spacing
-
Water penetration testing to evaluate the permeability and
leakage potential of the exterior brick wythe
-
Development of repair alternatives and cost estimates
-
Design of retrofit and repairs
-
Construction management and quality assurance inspection
during the entire repair phase
Fees for the repairs of both buildings were approximately
$1.5 million.
Services WDP used on this project included:
|
