Framing
Building in high wind coastal environments requires that extra attention be paid to the structural connections. We will work with engineers and hardware manufacturers to examine the architectural drawing and implement the correct solutions based on specific design loads.
When it comes to the structural members we always recommend oversizing the member being designed. This will result in stiffer floors, walls with reduced deflection, and an overall more solid structure that can withstand the test of time.
All of our subfloors are glued, nailed, and screwed. In certain situations the customer may prefer upgrading the thickness or doubling the subfloor for ultimate stiffness.
All structural walls will be constructed using 2x6 or larger members and blocked at all sheathing seams. Once the wall is over a certain height we will have 2x8 or greater members specified. For ultimate wall flatness and strength engineered lumber can be used. This becomes especially important in kitchens, bathrooms, and large walls when strength is crucial and the finish work depends largely on the flatness of the walls.
Gable Wall framed with 2x8 studs and LVL wind columns to brace the large wall against high winds. All the connections were fortified with structural screws.
3 Ply 18” LVL ridge beam fastened 12” o.c with structural screws. Rafters framed 12” o.c. Sheathing fastened 4'“ o.c in the field and 3” o.c for the boundaries.
Sheathing/Fastening
On the exterior walls we prefer to use a minimum ⅝” and ¾” plywood. There are two reasons for this. Plywood is more permeable than OSB which promotes drying within the wall assembly thus reducing the risk of mold and rot. The added thickness over ½” provides increased shear strength reducing racking under wind or seismic loads.
We also strongly recommend sheathing large interior wall even if it is not specified in the plans. This provides lateral resistance within the structure which will prevent cracking in plaster, drywall, or other finish materials. The added benefit to interior sheathing is that it provides a complete secure surface for finish materials to be mounted including cabinets hardware and trim. The sheathing can also be applied with acoustical sealant which will dampen sounds and vibrations between rooms.
Garage Portal Wall Framing. LVL header runs past opening to the end of the wall. Sheathing fastened 3in o.c and 3in grid on header. Interior strapped with MSTC40 continuous from jacks over header to top plates. Anchored to foundation with HDU.
Wall sheathing fastened 3in o.c panel edge 6in o.c in field. All seams blocked and nailed for increased shear strength. Acoustical sealant was applied behind interior sheathing for sound/vibration control.