hide ribbon for non admin users

https://support.bind.pt/hc/en-us/articles/204448249-How-can-I-hide-the-Office-365-SharePoint-2013-suite-and-ribbon-bars-for-anonymous-users-

en mi caso he puesto un spsecuritytrimmedcontrol antes del div suiteBarButtons..

 <SharePoint:AjaxDelta runat="server" ID="DeltaSuiteBarRight" CssClass="ms-core-deltaSuiteBarRight" BlockElement="true">
                <div id="welcomeMenuBox">
                    <wssuc:Welcome id="IdWelcome" runat="server" EnableViewState="false" />
                </div>
                <SharePoint:SPSecurityTrimmedControl ID="SPSecurityTrimmedControlName2" PermissionsString="FullMask" runat="server">
                    <div id="suiteBarButtons">
                        <span class="ms-siteactions-root" id="siteactiontd">
                            <SharePoint:SiteActions runat="server" AccessKey="<%$Resources:wss,tb_SiteActions_AK%>" ID="SiteActionsMenuMain"
                                PrefixHtml=""
                                
 tambien podemos hacerlo en cualquiera de los elementos pero no funciona por ejemplo para el de "edit page"