Holding up ledger boards, especially on decks and porches can be tricky and critical to safety. I added a download detail on the PlanHelp site (http://www.planhelp.com/public/programs/downloadsearch.cfm?searchtype=simple&searchmode=cat&keywords=recent&sortby=name&cat=Plan%20Details). (See Deck to House details.)
This job can be made easier with new fasteners with very interesting specs. The "LedgerLok" is a no pre-drill screw fastener that is stronger than a 1/2" lag screw. Each one supports 272 lbs in Yellow pine vs 230 lbs for a 1/2" lag. They are triple corrosion coated to stand up to the new ACQ pressure treated lumber and can be installed with any drill, cordless or corded.
(http://www.fastenmaster.com/Files/FastenMasterProductFiles/9/Images/PhotoImage2_Medium.jpg)
http://www.fastenmaster.com/productdetails.aspx?catID=8&prodID=9
The site has other specialty fasteners for other jobs.
When I called 800-518-3569 they sent the spec sheet and four sample screws to try out.
Those look like terrific screws. I'm going to have to call them Monday. :)