ITEM 660 SODDING
660.01 Description
660.02 Materials
660.03 Lifting Sod
660.04 Preparation of Areas to be Sodded
660.05 Placing Sod on Slopes 3 to 1 or Flatter
660.06 Placing Sod on Slopes Steeper Than 3 to 1 But Flatter Than 2 to 1
660.07 Placing Sod in Ditches
660.08 Placing Reinforced Sod On Slopes 2 to 1 or
Steeper
660.09 Watering
660.10 Method of Measurement
660.11 Basis of Payment
660.01 Description. This work consists of furnishing,
hauling, excavating for and preparing the bed, and placing sod.
660.02 Materials. Furnish sod consisting of well-rooted
Kentucky Blue Grass (Poa pratensis)
or Canadian Blue Grass (Poa compressa)
containing a growth of not more than 30 percent of other grasses and clovers,
and free from all noxious weeds such as wild mustard, thistles, quack grass,
and Johnson grass, and reasonably free from dandelions and crab grass.
Ensure
that all sod is certified by the sod supplier that it complies with this
item. Ensure that the sod was recently
mowed to a height of not more than 3 inches (75 mm). Furnish a certificate with each shipment, and
furnish the following additional information from the sod supplier:
A. The name of the producer.
B. The amount of sod shipped in square
yards (square meters).
C. The location of sod field.
D. The location of job site.
E. The date sod was cut.
F. The thickness the sod was cut.
Furnish
wood stakes that are at least 1/2 ´
3/4 ´ 12 inches
(13 ´ 19 ´ 300 mm).
Furnish
T-pins that are 18-inch (450 mm) in length and ¼ inch (6 mm) in diameter and
have a 3-inch (75 mm) tee.
Furnish
round pins that are 18-inch (450 mm) in length and ¼ inch (6 mm) in diameter
and have a 1.5-inch (38 mm) washer.
Furnish
galvanized poultry netting 50 inches (1200 mm) wide with 2-inch (50 mm) mesh
and No. 20 gage minimum wire.
Furnish
fertilizer and lime according to Item 659.
Furnish
sod materials according to the Department’s Qualified
Product List (QPL).
660.03 Lifting Sod. Furnish sod strips that are not
less than 3 feet (0.9 m) and not over 6 feet (1.8 m) in length with a uniform
width of not over 24 inches (0.6 m). Furnish sod strips that lay flat on skids.
The Contractor may elect to deliver sod rolls of up to 25
feet (7.6 m) in length. Furnish sod
rolls that are pre-rolled on skids. Furnish sod cut to a depth equal to the
growth of the fibrous roots but in no case less than 1 inch (25 mm).
Deliver
sod to the job within 24 hours after being cut, and install it within 48 hours
after being cut.
During
wet weather, allow the sod to dry sufficiently to prevent tearing during
handling and placing. During dry
weather, water the sod before lifting to ensure its vitality and to prevent the
dropping off of the soil in handling.
660.04 Preparation of Areas to be Sodded. Before placing the sod, excavate
the sod bed to a depth that when the sod is in place the top of the sod is
flush with the surrounding grade and conforms to the typical
cross-section. If specified, place the
topsoil according to Item 659. If specified under Item 659,
apply commercial fertilizer and agricultural liming material. Incorporate these materials in the areas to
be sodded at the rate specified in 659.03 and 659.04 to a depth of not less than 1 inch (25
mm). Incorporate these materials within
48 hours prior to placing the sod.
Immediately before placing the sod, rake the area or otherwise bring it
to an even surface forming a proper sod bed.
If the area is dry, thoroughly water the sod bed.
660.05 Placing Sod On Slopes 3 to 1 or
Flatter. Do not place any sod when the
temperature is below 32 °F (0 °C). Do not place any frozen sod, and do not place
any sod upon frozen soil. When placing
sod between June 1 and October 15, cover it immediately with straw mulch 1 inch
(25 mm) thick, loose measurement.
Lift
sod from trucks or storage piles, and place it by hand with close joints and no
overlapping. Plug all gaps between
sections of sod and openings at angles with sod. After laying, thoroughly water the sod, and
tamp the sod with approved sod tampers sufficiently to bring the sod into close
contact with the sod-bed and to ensure tight joints between the sections or
strips. Upon placing the sod, ensure
that the surface of the sodded areas coincides with the finished grade.
660.06 Placing Sod on Slopes Steeper Than 3 to 1 But Flatter Than 2 to 1. Place sod on slopes steeper than 3 to 1 but
flatter than 2 to 1 according to 660.05, with
the following modifications.
Lay
sod with the long edges of the strip parallel to the contour starting at the
bottom of the slope. Neatly match
successive strips, and stagger all joints by at least 12 inches (300mm).
For sod placed 6 feet (1.8 m) or greater in
height (measured along the slope), stake each strip or roll securely along all sides with stakes not more
than 2 feet (0.6 m) apart with the flat side against the slope or with pins not
more than 2 feet (0.6 m) apart. Drive
the wooden stakes so that the last 1 inch (25 mm) remains above the top of the
sod. Drive pins 1 inch (25 mm) below the top of the grass.
After
laying, thoroughly water the sod, and tamp the sod with approved tampers
sufficiently to bring the sod into close contact with the sod-bed and to ensure
tight joints between the sections or strips.
660.07 Placing Sod in Ditches. Place sod in
ditches according to 660.05, with the following
modifications.
Place sod in ditches with joints staggered at
least 12 inches (300 mm). Stake each strip or roll securely along all sides
with wooden stakes not more than 2 feet (0.6 m) apart with the flat side
against the slope. Drive the wooden stakes so that the last 1 inch (25 mm)
remains above the top of the sod.
660.08 Placing Reinforced Sod On Slopes 2 to 1 or Steeper. Place
reinforced sod on slopes 2 to 1 or steeper or as specified in the plans
according to 660.05, with the following
modifications. Before placing the sod, place the galvanized poultry netting or
equivalent. Stake the galvanized poultry
netting or equivalent securely to the subgrade by using pins or wood stakes.
Place the pins or wooden stakes at 4 foot (1.2m) intervals. Fasten the netting
to the wooden stakes with staples. Where
the sod width is from 8 to 10 feet (2.4 to 3 m) wide, the Engineer will allow two strands of netting for a total
width of 8 feet (2.4 m). For sod, stake each strip or roll securely along all sides with wooden stakes
not more than 2 feet (0.6 m) apart with the flat side against the slope or with
pins not more than 2 feet (0.6 m) apart. Drive the wooden stakes so that the
last 1 inch (25 mm) remains above the top of the sod. Drive pins 1 inch (25mm)
below the top of the grass.
660.09 Watering. Keep all sodded areas thoroughly
moist for 30 days after sodding. Repair
any areas damaged following installation.
Ensure that sod is in place for at least 30 days before final
acceptance.
660.10 Method of Measurement. The Department will measure Sodding Unstaked, Sodding
Staked, and Sodding Reinforced by the actual number of square yards (square
meters) of area sodded, completed and accepted.
660.11 Basis of Payment. If required, the Department will pay for
topsoil liming and fertilizing under Item 659.
The
Department will pay for accepted quantities at the contract prices as follows:
Item Unit Description
660 Square
Yard Sodding Unstaked
(Square Meter)
660 Square
Yard Sodding Staked
(Square Meter)
660 Square
Yard Sodding Reinforced
(Square Meter)