Building a soccer goal; constructing a sandbox

The expert crew celebrates the 150th episode with special projects that parents and kids can work on together. Plumbing and heating expert Richard Trethewey shows how to build a soccer goal using PVC plumbing pipes. In the ASK THIS OLD HOUSE loft, general contractor Tom Silva demonstrates how to make a pair of stilts out of wood. Landscape contractor Roger Cook shows a family how to build a sandbox and make replicas of fossils.