design elements - San Jacinto Texas Historic District

PAVERS
Clay brick pavers Ironspot
Clay Brick Pavers
■ Once fi red, clay is one of the longest lasting paving materials available.
■ Clay pavers are created by either pressing the clay into molds, or by
extruding the clay through a die and wire-cutt ing them to size. Wire
cut pavers often have a higher coeffi cient of friction which is good for a
walking surface, but molded pavers may off er more textural options.
■ Clay pavers can either be sand-set onto a gravel sub-base for a fl exible
pavement, or mortar-set onto a concrete sub-base for a rigid one.
■ A herringbone patt ern distributes wheel loads the best and should be
used for vehicular areas.
Recommended Manufacturer/Model
■ Pinehall Hall Brick / English Edge, www.pinehallbrick.com
(colors: Ironspot, Rose FR*, Accent Grey*, and Buff *)
■ Estimated Installed Cost: $12/sf (c.2010)
* Color has good heat refl ectance properties
66 │ DESIGN ELEMENTS
Poured-in-place concrete ($5/sf) and hot-mixed asphalt ($2.5/sf) are the most commonly used surfacing types due to very low
initial installation cost. These two surface types continue to be used for many applications. However, individual unit pavers are a
good alternative to these traditional materials in applications where aesthetics, stormwater infi ltration, and long-term durability are
important. When set into a sand base, the unit pavers create a fl exible surface capable of handling shifting subgrade conditions
without cracking. The primary paver materials are clay or precast concrete, and a variety of shapes and colors are available. Pavers
also provide a much more fl exible material as it relates to integrating creativity and artistry into the paved surface, whether through
design, orientation or color. The Texas star, a natural landscape mosaic, and historic scenes can be created using pavers.
Accent Gray Rose
Buff Permeable unit pavers in pedestrian walk. Permeable unit pavers in parking lot
Permeable Unit Pavers
■ Permeable unit pavers are available in clay and precast concrete and
provide the best infi ltration rates of all permeable paving systems.
■ Infi ltration occurs in the joints between individual units. An open-graded
gravel is required for the sub-base.
■ Narrow jointed pavers should be used for areas with high pedestrian
traffi c to minimize confl icts with high heels and canes.
■ Larger jointed pavers should be used for vehicular areas where increased
infi ltration rates will be helpful.
■ L-shaped, or other interlocking paver type should be used for vehicular
areas where heavy wheel loads and turning movements will need to be
resisted.
Recommended Manufacturer/Model for pedestrian areas
■ Unilock/Eco-priora, www.unilock.com
■ Estimated Installed Cost: $10/sf
Recommended Manufacturer/Model for vehicular areas
■ Unilock/Eco-Optilock, www.unilock.com
■ Estimated Installed Cost: $8/sf (c.2010)