Decks, Fasteners and Retaining Walls Flashcards
All retaining walls have a maximum height of _____ including depth to foundation.
3m
All walls will permit a ______ recharge without danger of overturning except for timber crib walls.
600mm (2ft)
The maximum soil bearing pressure is assumed to be ______
16 750 kg/m2 (1.5 tons/ft2)
The foundation depth in rigid construction (D) should extend to ______ , or in frost conditions should extend below the frost depth according to local practice
600mm (2ft)
Expansion joints, when needed, should be placed every ______ or less
9m (30ft)
______ structures include reinforced embankments of vegetation, geotextile matting, turf grids, stone, or concrete surfacing. Typically less expensive to install.
Type “A”
For practical purposes, ______ is a useful maximum slope for masonry, stone or other paved embankments.
1:1.5
______ structures are essentially flexible interlocking retaining walls that have a vertical face.
Tybe “B”
The base, or footing, need not extend below the frost line in temperate climates if the prepared subgrade has ______ .
Sufficient porosity and bearing capacity
______ structures include concrete and masonry gravity walls and reinforced concrete cantilevered walls. Most costly but have the longest life expectancy.
Type “C”
Soil bearing capacity determines width of ______ .
Footing and method of wall construction
Small walls and those which are extensions of architecture are typically built without a batter. Larger walls commonly have a ______ batter for visual reasons.
12:1
Fencing: Lighter colours tend to ______ the barrier structure while darker colours tend to ______ and blend into the landscape.
Emphasize, recede
Fencing: Post depth is typically calculated based upon ______ .
Soil type and wind loads
Decking material should be greater than ______ nominal thickness unless noticeable deflection is accepted. Pre-molded 30mm (5 ¼”) planking is often used but ______ is more common.
25mm (1in), 50mm (2in)
