dz.xml

    <catalog_product_view><!-- product view -->
        <reference name="root">
            <action method="setTemplate"><template>page/1column.phtml</template></action>
        </reference>
        <reference name="product.info">
            <block type="catalog/product_list_related" name="catalog.product.related" before="-" template="catalog/product/list/related.phtml"/>
        </reference>
    </catalog_product_view>