Hycrete, Inc.

Owner:

Dunbar High School - Washington, DC

Architect:

Perkins Eastman

General Contractor:

Gilbane Building Company

Scope Of Work

Introduction

Dunbar High School in Northwest Washington, D.C., designed by Perkins Eastman

and built by Gilbane, Inc., completed an addition to its athletic facilities which

includes a new gymnasium.

Challenge

The slab of the new gymnasium floor is located above the natatorium, an area with

high humidity. The gym floors are a high-quality wood, which is one of the more

moisture-sensitive flooring materials. In addition, Gilbane built the project with

a very difficult, fast-track construction schedule.

Solution

Perkins Eastman and Gilbane elected to use Hycrete V1000 in the elevated slab to

protect the sensitive wood finishes.

 

Result

Using Hycrete V1000 enabled the flooring to be installed on time and within the

flooring manufacturer’s recommendation for acceptable moisture content. After

seven days of climate control just prior to the installation of the wood flooring, the

concrete with Hycrete was measuring between 75% and 80% relative humidity

(RH) using in situ probes (ASTM 2170) and 3.0–3.4 lbs/1,000 ft2/24 hours according

to calcium chloride (ASTM F1869) testing. In addition, the owners have warranted

protection and peace-of-mind that the critical areas will be protected.