Step 5: Install Front Rim Joist, Beams, and Interior Joists

Tom Silva biuliding an on-grade deck
Photo: David Carmack
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Fasten concealed-flange double joist hangers on the ends of the front rim joist’s inner 2xs. Then fit the inner 2xs into the post bases.

Fit a side rim joist into a front hanger, and square the corner. Secure the front rim joist 2x to the post bases with hanger nails. Then drive six 16d nails through the face of the front rim joist into the end of the side rim joist. Repeat with the other side rim joist.

Fasten face-mounted double joist hangers for beams every 8 feet on center along the front rim joist and ledger, flush with their bottom edges.

Fit and nail each beam as described above.

Complete the doubled front rim joist by gluing and nailing the outer 2xs to the inner 2xs.

Install 2x joist hangers along the beams, 16 inches on center. (Joists, once inserted, should be flush with the top edge of the ledger, rim joists, and beams.)
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    Tools List

    • hammer drill
      Hammer-drill with masonry bit
    • drill
      1/2-inch drill with 3/8-inch bit
    • socket wrench
      Socket wrench
    • plumb bob
      Plumb bob and string
    • circular saw
      Circular saw
    • two-foot level
      Level
    • chalk line
      Chalk line
    • concrete mixer
      Concrete mixer,
      or mixing trough and hoe
    • hammer
      Hammer
    • impact wrench
      Impact wrench
    • flat blade shovel
      Shovel
    • 16-foot tape measure
      Tape measure
    • utility knife
      Utility knife

    Shopping List

    1. 5X4-INCH DECKING LUMBER

    2. 2X8 PRESSURE-TREATED LUMBER for the joists

    3. 2X10 PRESSURE-TREATED LUMBER for the ledger, beams and rim joists

    4. FIBERBOARD PIER FORM

    5. PLASTIC FOOTING FORM

    6. CONCRETE

    7. LEDGER FASTENERS lag screws and/or carriage bolts

    8. POLYURETHANE MARINE SEALANT

    9. FACE-MOUNTED JOIST HANGERS

    10. POST BASES

    11. MASONRY EXPANSION BOLTSto fasten post bases to concrete piers

    12. SILICONIZED ACRYLIC CAULK

    13. METAL FLASHING

    14. 6D, 12D, AND 16D GALVANIZED OR STAINLESS STEEL COMMON NAILS

    15. 8D GALVANIZED OR STAINLESS STEEL FINISH NAILS

    16. 5/8-INCH ROOFING NAILS

    17. SELF-ADHERING WATERPROOF MEMBRANE

    18. CONCEALED-FLANGE AND FACE-MOUNTED DOUBLE JOIST HANGERS AND HANGER NAILS

    19. CONSTRUCTION ADHESIVE