The 4d’s: deflection, drainage, drying, durability
- Building science basics: define, some relevant details, practical applications
- Building envelope: what it must do to meet current expectations, components, assembly, how building science comes into play.
- Doors and windows: types, design pressures, performance, selecting, installation.
- Caulks, sealants, adhesives, tapes, wraps. How they work, selecting the right product for the job, application.
- Housewrap, weather resistive barriers. Integrating with other moisture management products, function.
- Drainage mats and sheets. Methods to keep water out of walls by creating a drainage plane.
- Sill pans, why every exterior door and window should have one.
6 Phase Construction Inspection
A. Plan Approval: Plan review and approval is the first inspection and should be completed prior to the beginning of construction. (Refer to .11.B for the definition of “construction start.”)
B. Footings and Foundation: Footings and foundation should be supported by undisturbed natural soils or engineered fill that complies with the applicable state building code. Footings and foundation construction should be capable of accommodating all loads and of transmitting the resulting loads to the supporting soil according to the applicable state building code.
1. Footings: Exterior walls should be supported on continuous solid or fully grouted masonry or concrete footings, wood foundations, or other approved structural systems. An inspection is made after excavations for footings are completed and any required reinforcing steel is tied in place. When applicable, ground cable should be installed.
2. Foundation Inspections may vary depending on the type of construction and the supporting soil. The foundation inspection includes, but is not necessarily limited to, an inspection of the foundation’s reinforcement, depth, drainage, anchorage, elevation, backfill, and waterproofing or damp-proofing.
C. Rough-In Inspections (Framing, Electrical, Plumbing, and Mechanical)
1. Framing: Interior and exterior walls should be constructed according to the type of material used as specified in the state building code. The framing inspection should be made after all electrical, plumbing, and mechanical rough-in has been inspected and all ducts, chimneys, hold-downs and shear walls are installed and framing is complete. Pre-assembled walls must be ICC listed. The manufacturer must comply with ICC’s quality control requirements, continuing to keep the wall assemblies listed, as long as the wall assemblies are used in new construction. Either the manufacturer of the pre-assembled walls or the contractor using them must provide the authorized inspector with a copy of the third-party evaluation report on the wall assembly. The authorized inspector must verify that each wall assembly is, at a minimum, stamped with: 1) the name and address of the manufacturer and 2) the third-party evaluation report number.
2. Electrical: The electrical inspection includes an examination of the materials, components, and electrical equipment installed. All rough wiring for the structure and the electrical service is inspected at the same time. Rough-in inspection includes, but is not necessarily limited to, all wiring within the walls, all circuit breakers, panel boards and ground splices terminated by mechanical means. The inspection takes place after all wiring systems, including the ground conductor, have been installed in approved boxes, cabinets, and service equipment. Switches, receptacles and fixtures should not be installed at the rough-in.
3. Plumbing/Mechanical: In accordance with the state building code, the plumbing and mechanical systems are inspected prior to covering or concealing any portion of the system. The inspection takes place after the installation of all water piping, drain, waste vent piping, fuel gas piping, HVAC ducting, range, dryer and bath exhaust ducting, furnace, boiler, water heater, unit heaters, and/or other fuel fired appliances and their venting system. Also in accordance with the state building code, water or air pressure testing is required on all water, drain, waste and vent piping. Air pressure testing is required on all fuel gas piping.
D. Insulation and Vapor Barrier: Generally, the insulation/vapor barrier inspection is completed after the rough-in framing, electrical, plumbing and mechanical inspections are approved, all insulation has been installed in ceilings and walls, and all vapor retarder is in place and sealed. The authorized inspector must also have adequate access to determine compliance with Alaska Building Efficiency Standard (BEES).
E. Conditional Approval: Conditional approval is acceptable only when unfinished items cannot be completed due to weather or other delays beyond the builder’s/contractor’s control. Conditioned items must not pose a risk to health or life/safety. The lender is responsible for ensuring timely completion of the work and obtaining final documentation.
F. Final Approval: Generally, the final inspection takes place when a residential unit is 100% complete. All health or life/safety items must be addressed and the final inspection performed prior to occupancy.