This Diploma work investigates internal air ventilated crawl-space in respect to construction and damp. The Diploma work assumes from a general description of crawl-space and general dump problems in ground construction. An internal air ventilated crawl-space is a construction where you take the ventilation air from the building and bring it down to the crawl-space and lets the air circulate before it passes through a retaining aggregate on the way out from the crawl-space. In this matter you get a worm space under the building and a lot less dump problems in form of · Ground damp · Build damp The ground dump reduces through draining around the building, different layer of gravel between the ground and the building and ventilation of the crawl- space. The build dump reduces through ventilation of the crawl-space as fast as possible. To make a internal air ventilated crawl-space work as it is thought it demands that the construction is completely airtight, or else you can get air leakage that makes warm air to leak out and could air can come in. From the literature study about internal air ventilated crawl-space and dump I have evaluated two different manufactures and have discovered that the differences according to construction problems and dump problems is marginal.

<p>This Diploma work investigates internal air ventilated crawl-space in respect to construction and damp. The Diploma work assumes from a general description of crawl-space and general dump problems in ground construction. </p><p>An internal air ventilated crawl-space is a construction where you take the ventilation air from the building and bring it down to the crawl-space and lets the air circulate before it passes through a retaining aggregate on the way out from the crawl-space. In this matter you get a worm space under the building and a lot less dump problems in form of </p><p>· Ground damp </p><p>· Build damp </p><p>The ground dump reduces through draining around the building, different layer of gravel between the ground and the building and ventilation of the crawl- space. The build dump reduces through ventilation of the crawl-space as fast as possible. </p><p>To make a internal air ventilated crawl-space work as it is thought it demands that the construction is completely airtight, or else you can get air leakage that makes warm air to leak out and could air can come in. </p><p>From the literature study about internal air ventilated crawl-space and dump I have evaluated two different manufactures and have discovered that the differences according to construction problems and dump problems is marginal.</p>