functions.php

<?php

// Force content-sidebar layout.
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_content_sidebar' );

// Force sidebar-content layout.
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_sidebar_content' );

// Force content-sidebar-sidebar layout.
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_content_sidebar_sidebar' );

// Force sidebar-sidebar-content layout.
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_sidebar_sidebar_content' );

// Force sidebar-content-sidebar layout.
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_sidebar_content_sidebar' );

// Force full-width-content layout.
add_filter( 'genesis_pre_get_option_site_layout', '__genesis_return_full_width_content' );