Innovations in Joint Restraint Systems for PVC Pressure Pipe

Transcription

1 Innovations in Joint Restraint Systems for PVC Pressure Pipe S&B TECHNICAL PRODUCTS, INC EAST BERRY STREET FT. WORTH, TEXAS PH: FX:

2 What or Who Is Bulldog Restraint System?

3 About S&B Technical Products / Hultec S&B Technical Products is a family-owned business, founded in 1981 Core Business is Pipe Sealing Systems Elastomeric / Rubber Products for Pipelines & Appurtenances Largest Pipe Seals Market Share in the World (85-90% of North American Market, 50% of European Market) Other Businesses Include Rubber and Specialty Products for Oil and Gas Industry, and Corrosion Protection Systems. Products are Sold in Over 70 Countries

4 Offices, Warehouses & Manufacturing Worldwide USA Mexico Costa Rica Columbia Poland Germany France Turkey Romania China Vietnam Office Manufacturing /Splicing Warehouse Brazil Argentina Australia

5 Product Sales Worldwide Direct and/or Indirect Sales of Products

6 About S&B Technical Products / Global Technological Leaders in Pipe Sealing Solutions More Than 60 Patents and Patents Pending, More Than All Our Competitors Combined Engineers, Chemists and Scientists Provide the Best Technological Solutions to Meet Customers Needs Hultec

7 Today s Discussion Containing Thrust Forces Case Histories

8 Containing Thrust Forces

9 How Are Thrust Forces Contained? Concrete Thrust Blocks Mechanical Restraints

10 Design Guidance

11 Thrust Blocks Function: Transfer and Distribute Thrust Forces in Pipeline to Surrounding Soil Structure

12 Thrust Blocks

13 Disadvantages of Thrust Blocks Replication of Design in the Field Soil Bearing Capacity of In-situ Soils Availability of Space Time Required for Concrete to Dry & Cure Future Excavations

14 Mechanical Joint Restraint

15 Joint Restraint Options Hardware to track. Hardware time consuming to install. Exposed metal components have their own corrosion issues

16 Today s Discussion Containing Thrust Forces Case Histories

17 Today s Discussion Case Histories from Texas, Minnesota,

18 First Texan Case History: City of McKinney, Texas 6 Cast Iron water pipe serving approximately 18 homes Red water complaints City s Paving Department preparing to pave the street Designed new 1,110 Linear Feet of 8 PVC Water Pipe offset from existing main

19 First tie-in: Beyond a 6X8 reducer, several 8-inch MJ Field Lok- PV self restraining gaskets were used for fitting-to-pipe connections, as well as the BullDog for pipe-to-pipe connections. First Texan Case History: City of McKinney, Texas

20 First Texan Case History: City of McKinney, Texas

21 First Texan Case History: City of McKinney, Texas

22 Second tie-in: Three joints of BullDog Pipe were used. Joint restraints were utilized at valveto-pipe joints, pipe-to-pipe joint, pipe-to-reducer joints, and pipeto-fitting joints First Texan Case History: City of McKinney, Texas

23 First Texan Case History: City of McKinney, Texas

24 First Texan Case History: City of McKinney, Texas Successful installation Less install time compared to traditional materials No waiting for concrete to cure. Backfilled and ready for pavement repairs by the end of the day

25 Second Texan Case History: McKinney, Texas, Fabricated Fittings

26 Second Texan Case History: McKinney, Texas, Fabricated Fittings

27 Second Case History: McKinney, Texas, Fabricated Fittings

28 Third Texan Case History: City of Garland, Texas, Casing Installation

29 Third Texan Case History: City of Garland, Texas, Casing Installation

30 Third Texan Case History: City of Garland, Texas, Casing Installation

31 Third Case History: City of Garland, Texas, Casing Installation

32 Today s Discussion Case Histories from Texas, Minnesota,

33 South Saint Paul, Minnesota 4,400 lineal feet of 8-inch C900 DR18 (28) 8-inch fabricated PVC pressure fittings cross tees 90 bend 45 bends 22.5 bends bend

34 Site Conditions Water table above trench bottom 0.5 Miles from Mississippi floodplain Peats and sands, very poor trench conditions Many old, abandoned shallow drains Some blue clay at trench bottom Design called for all joints to be restrained

35 Commercial Development Bridgepoint Business Park On-site water service The site was a slaughterhouse since 1886

36 Fabricated PVC Pressure Fittings

37 Wet Conditions

38 Wet Conditions

39 Wet Conditions

40 Eagle Claw for Fitting Assembly

41 Eagle Claw for Fitting Assembly

42 Acceptance Testing All pipe and fittings joints passed the pressure test 150 psi minimum for 48 hours One segment was at 150 psi for 15 days.

43 South Saint Paul, Minnesota South Saint Paul City Engineer, John Sachi

44 South Saint Paul, Minnesota Bridgepoint Business Park Contractor, Bob Bruley, Frattalone Company

45 Today s Discussion Containing Thrust Forces Case Histories

46 Internal Joint Restraint Solution

47 Innovations in Joint Restraint Systems for PVC Pressure Pipe S&B TECHNICAL PRODUCTS, INC EAST BERRY STREET FT. WORTH, TEXAS PH: FX: