This specification covers storm sewers, headwalls, inlets, culverts, culvert extensions, alterations of existing structures, and miscellaneous items that are related to a storm water drainage system.
(Ordinance 2007-106, App. B, adopted 3/20/07)
Section 02222 Excavation, Trenching, and Backfilling for Utilities Section 02229 Excavation Safety
(Ordinance 2007-106, App. B, adopted 3/20/07)
Unless otherwise indicated on the Bid Form, the measurement and payment for the work specified in this Section shall be as follows:
A. 
Storm Sewers and Culverts.
Storm sewer length will be measured by the linear foot from the inner face of the inlets to the outer face of existing conduits and/or headwalls. No length deductions will be made for fittings such as wyes or tees. Storm sewers and culverts shall be measured and paid for according to diameter and type of pipe regardless of the trench depth. The unit price for each individual pipe size shall include all work required for trenching operations, furnishing and installing pipe and all operations not designated to be paid for separately. Trench sheeting and shoring of depths less than five (5) feet and dewatering will be included in the unit prices for storm sewers. Fittings shall not be paid for separately.
B. 
Connection to Existing Culvert.
Unless a separate unit price is established in the proposal, then connections to existing culverts will be included in the unit price for pipe. The unit price shall include removing the existing culvert wall, grouting the new lead pipe in place, and all other related work as shown on the plans. Separate payment will be made for the lead pipe.
C. 
Culvert Extension.
Culvert extensions will be paid for at the unit price stated in the bid form. The unit price shall include the furnishing of all necessary materials, tools, labor and equipment, removing the existing headwall and a portion of the existing culvert barrel, disposal of the removed materials, constructing an extension to the existing culvert, grading the road ditch and all other necessary work needed to complete the operation as directed on the plans.
D. 
Headwalls.
Headwalls will be paid for per each at the unit price bid. The price shall include all excavation, materials, labor and equipment to construct the headwalls and regrade the adjacent ditch.
E. 
Curb Inlets.
Curb inlets will be paid for per each at the unit price bid. The unit price shall include cutting and removing pavement, disposal of the materials removed, excavation, backfill, construction of the curb inlet structure as shown on the plans, and all appurtenant work. The height variance from the curb at the inlet to the standard curb and gutter shall be included in the unit price. Payment for the lead pipe from the inlet to the storm sewer main shall be paid for separately.
(Ordinance 2007-106, App. B, adopted 3/20/07)
The applicable provisions of the following standards shall apply as if written here in there entirely:
AASHTO American Association of State Highway and Transportation Officials
ASTM American Society of Testing and Materials
TxDOT Texas Department of Transportation Standard Specifications for Construction of Highways, Streets and Bridges
(Ordinance 2007-106, App. B, adopted 3/20/07)
Submit manufacturer’s certification that pipe meets the specified standards. The City of Magnolia, Engineer or the designated representative of the Engineer shall determine the number of copies of submittals that are required to be submitted for review and approval.
(Ordinance 2007-106, App. B, adopted 3/20/07)