- 657 - SECTION 734 -- PRECOMPRESSED POLYURETHANE FOAM (PPF) JOINT
734.01 Description
1.This work shall consist of providing and installing a Preformed Expansion Joint in a preformed gap at the locations and limits shown in the contract.
2.The Preformed Expansion Joint shall be either a Precompressed Polyurethane Foam Joint or a Preformed Silicone Joint, as indicated in the contract.
a.When the item is “Precompressed Polyurethane Foam Joint, Type ___” the joint shall be a Precompressed Polyurethane Foam Joint of the type indicated in the contract.
b.When the item is “Preformed Silicone Joint, Type ___”, the joint shall be a Preformed Silicone Joint of the type indicated in the contract.
c.When the item is “Preformed Expansion Joint, Type ___”, the joint may be either a Precompressed Polyurethane Foam Joint or a Preformed Silicone Joint of the ty pe indicated in the contract.
734.02 Material Requirements
1.Precompressed Polyurethane Foam Joints:
a.PPF Joint shall be precompressed self-expanding polyurethane foam with factory applied silicone facing on top of the foam.
b.PPF joints shall be ordered for the joint material dimension shown in the contract.
c.Approved PPF Joint systems are shown on the Department’s Approved Products List under Precompressed Polyurethane Foam Joint, Type A or B.
2.The approved Preformed Silicone Joint systems are shown on the Department’s Approved Products List under Preformed Silicone Joint, Type A or B.
3.Primers, epoxy adhesives, and silicone sealants shall comply with the manufacturer’s recommendations.
4.Materials shall be resistant to ozone, ultraviolet rays, petroleum products, solvents, industrial cleaners, corrosive vapors and acids.
5.Joint material shall be delivered to the Contractor’s storage area and to the job site in the Manufacturer’s original undamaged containers with wrapping intact. Storage of joint material shall be in a dry, enclosed area, off the ground, between 60 F (16C) and 75 F (24C) and out of direct sunlight until immediately prior to installation.
734.03 Construction Methods
1.The installation of the Pr eformed Expansion Joint and the adhesives shall be completed according to the manufacturer's specifications. Additional field applied silicone is requ ired on both sides of the top of the joint. Any installation that fails to meet the manufacturer's specifications shall be removed and replaced at no cost to the Department.
2.The installation instructions and specifications shall be given to the Engineer 7 days prior to the installation.
734.03 Precompressed Polyurethane Foam (PPF) Joint
- 658 - 3. The Preformed Expansion Joint shal l be installed in the presence of the Engineer.
4.The joint opening in the concrete shall be cleaned by sandblasting and shall be dry and free of oil and other deleterious materials before the installation of the Preformed Expansion Joint.
5.The installation of the Pr eformed Expansion Joint shall be completed between 45°F (7°C) and 90°F (32°C).
6.Any joint material damaged during corrective grinding shall be replaced at no cost to the Department.
734.04 Method of Measurement
1.The Preformed Expansion Joint shall be measured for payment by the linear foot (meter) of joint prop erly installed and accepted by the Engineer.
2.Pay limits for Preformed Expans ion Joint shall be the horizontal distance from end to end along the cent erline of the joint assembly at the locations shown in the contract and 1 foot (0.3 m) upward at the gutter lines.
734.05 Basis of Payment
1.P a y I t e m P a y U n i t Preformed Expansion Joint, Type ___ Linear Foot (LF) [Meter (m)] Precompressed Polyurethane Linear Foot (LF) Foam Joint, Type_____ [Meter (m)] Preformed Silicone Joint, Type ___ Linear Foot (LF) [Meter (m)]
2.Payment is full compensation for furnishing and installing the Preformed Expansion Joint and for all labor, equipment, tools and incidentals necessary to complete the work. - 659 - DIVISION 800 -- ROADSIDE DEVELOPMENT AND EROSION CONTROL 801 -- PERMANENT SEEDIN G ................................................................ 663
801.01 Description ........................................................................... 663
801.02 Material Requirements ........................................................ 663
801.03 Construction Methods ......................................................... 663
801.04 Method of Measurement ...................................................... 665
801.05 Basis of Payment .................................................................. 665
802 -- COVER CRO P SEEDIN G ............................................................... 666
802.01 Description ........................................................................... 666
802.02 Material Requirements ........................................................ 666
802.03 Construciton Methods ......................................................... 666
802.04 Method of Measurement ...................................................... 667
802.05 Basis of Payment .................................................................. 667
803 -- TEMPORAR Y SEEDIN G ................................................................ 668
803.01 Description ........................................................................... 668
803.02 Material Requirements ........................................................ 668
803.03 Construction Methods ......................................................... 668
803.04 Method of Measurement ...................................................... 669
803.05 Basis of Payment .................................................................. 669
804 -- FERTIL IZING .................................................................................. 670
804.01 Description ........................................................................... 670
804.02 Material Requirements ........................................................ 670
804.03 Construction Methods ......................................................... 670
804.04 Method of Measurement and Basis of Payment .................. 670
805 -- SOIL AM ENDMEN T ....................................................................... 671
805.01 Description ........................................................................... 671
805.02 Material Requirements ........................................................ 671
805.03 Construction Methods ......................................................... 671
805.04 Method of Measurement ...................................................... 671
805.05 Basis of Payment .................................................................. 671
806 -- MULCHI NG ..................................................................................... 673
806.01 Description ........................................................................... 673
806.02 Material Requirements ........................................................ 673
806.03 Construction Methods ......................................................... 673
806.04 Method of Measurement ...................................................... 674
806.05 Basis of Payment .................................................................. 674
807 -- HYDROMUL CHING ........................................................................ 675
807.01 Description ........................................................................... 675
807.02 Material Requirements ........................................................ 675
807.03 Construction Methods ......................................................... 675
807.04 Method of Measurement ...................................................... 675
807.05 Basis of Payment .................................................................. 676
808 -- SLOPE PROT ECTION ................................................................... 677
808.01 Description ........................................................................... 677
808.02 Material Requirements ........................................................ 677
808.03 Construction Methods ......................................................... 677
808.04 Method of Measurement ...................................................... 678
808.05 Basis of Pyament .................................................................. 678
809 -- SODDI NG ....................................................................................... 679
809.01 Description ........................................................................... 679
809.02 Material Requirements ........................................................ 679
Source: Nebraska Standard Specifications for Highway Construction, 2017 Edition. Pages 691–692 of 1,048.