Inspecting Exterior Structures

By Nathan Pile


A typical deck is a large, raised wooden floor attached to the back of a house and contained by a perimeter railing for safety. Decks are rarely covered, and usually have a rough or informal look that is not integrated with the rest of the house's design. They are usually slightly raised above the ground surface. The floor system is open to allow water to pass through. Decks are usually supported by posts and the house wall or foundation. They are typically intended to be locations for large outdoor social gatherings, such as barbecues and birthday parties. Access to the deck may be from the ground through a stairway, or from the house through a back door.

The deck of a house is generally a wooden platform built above the ground and connected to the main building. It is generally enclosed by a railing for safety. Access may be from the house through doors and from the ground via a stairway. Residential decks can be constructed over steep areas or rough ground that is otherwise unusable. Decks can also be covered by a canopy or pergola to control sunlight. Deck designs can be found in numerous books, do-it-yourself magazines and web sites
Installing footing is accomplished by digging holes straight down to below the frost level, small stones are dropped into the bottom for drainage and an 8" cement tube is placed into the hole and cement filled. A "J bolt" is placed carefully into the top center of the cement before it sets.
This is the most stable form of deck building footings that will last the longest and provide the most value. Some areas now require the bell footing be installed at base of hole.

A verandah (or veranda) is a long, roofed, open gallery built around a central structure, and supported by pillars. Verandahs are often long enough to extend around the front and sides of a structure. Their origins are uncertain, but they are known to be a hybrid of East Indian and European styles. The purpose of the verandah is social, although in a more relaxed, everyday sense than is the case of a deck or patio.

Because decks appear to be simple to build, many people do not realize that decks are, in fact, structures that need to be designed to adequately resist certain stresses. Like any other house or building, a deck must be designed to support the weight of people, snow loads, and objects. A deck must be able to resist lateral and uplift loads that can act on the deck as a result of wind or seismic activity. Deck stairs must be safe and handrails graspable. And, finally, deck rails should be safe for children by having proper infill spacing.

Depending on how the deck was built, vital connections may have degraded over time due to various factors. Issues such as wobbly railings, loose stairs, and ledgers that appear to be pulling away from the adjacent structure are all causes for concern. The tightness of fasteners should be checked. If it is not possible to reach both sides of a bolt, it may be struck with a hammer. The ring will sound hollow with vibration if the fastener is loose. The ring will sound solid if the connection is tight. The hammer test is subjective, so the inspector should hammer-test bolts that can be confirmed as tight or loose, and compare the sounds of the rings to develop a control.

The Barrie Home Inspector looks at all aspects of exterior structu
Because decks appear to be simple to build, many people do not realize that decks are, in fact, structures that need to be designed to adequately resist certain stresses. Like any other house or building, a deck must be designed to support the weight of people, snow loads, and objects. A deck must be able to resist lateral and uplift loads that can act on the deck as a result of wind or seismic activity. Deck stairs must be safe and handrails graspable. And, finally, deck rails should be safe for children by having proper infill spacing.

Depending on how the deck was built, vital connections may have degraded over time due to various factors. Issues such as wobbly railings, loose stairs, and ledgers that appear to be pulling away from the adjacent structure are all causes for concern. The tightness of fasteners should be checked. If it is not possible to reach both sides of a bolt, it may be struck with a hammer. The ring will sound hollow with vibration if the fastener is loose. The ring will sound solid if the connection is tight. The hammer test is subjective, so the inspector should hammer-test bolts that can be confirmed as tight or loose, and compare the sounds of the rings to develop a control.

The Barrie Home Inspector looks at all aspects of exterior structures, from type of material and whether is structurally meets the local code requirements. All bolts and washers are inspected to ensure proper size and placement. Wood is checked for rot or decay and all safety distances on steps, guards and handrails are checked against minimum requirements.




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