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    Detail 02 Thrust Block

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    engr_haseeb07
    This document provides details for calculating the size of thrust blocks used to resist forces from pressurized pipes. It includes formulas for determining the required bearing area of thrust blocks at bends, tees, wyes, and dead ends. The bearing area is calculated based on the test pressure, pipe area, fitting type, and allowable soil pressure. Notes provide additional guidance on properly designing and installing thrust blocks.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Detail 02 Thrust Block

    Uploaded by

    engr_haseeb07
    93 views1 page
    This document provides details for calculating the size of thrust blocks used to resist forces from pressurized pipes. It includes formulas for determining the required bearing area of thrust blocks at bends, tees, wyes, and dead ends. The bearing area is calculated based on the test pressure, pipe area, fitting type, and allowable soil pressure. Notes provide additional guidance on properly designing and installing thrust blocks.

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    Detail-02-Thrust-Block

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    This document provides details for calculating the size of thrust blocks used to resist forces from pressurized pipes. It includes formulas for determining the required bearing area of thrust blocks at bends, tees, wyes, and dead ends. The bearing area is calculated based on the test pressure, pipe area, fitting type, and allowable soil pressure. Notes provide additional guidance on properly designing and installing thrust blocks.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    93 views1 page

    Detail 02 Thrust Block

    Uploaded by

    engr_haseeb07
    This document provides details for calculating the size of thrust blocks used to resist forces from pressurized pipes. It includes formulas for determining the required bearing area of thrust blocks at bends, tees, wyes, and dead ends. The bearing area is calculated based on the test pressure, pipe area, fitting type, and allowable soil pressure. Notes provide additional guidance on properly designing and installing thrust blocks.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 1

    22 1/2 45° BEARING

    11 1 ° AREA
    /2°
    100%

    100%
    100%
    100%
    22 1/2° BEND 45° BEND
    90° BEND
    3/8" TIE RODS TEE
    BEARING
    AREA
    22 1/2° 100% 15#
    FELT

    MIN
    100% OF TEE "Y" BRANCH DEAD END TYPICAL SECTION
    VALVE

    FOR OTHER ANGLES NOT SHOWN, CALCULATE AS REQUIRED.


    P

    2 #5 REBARS EXPOSED
    FOR BENDS: R = 2PA SIN /2
    REBARS COATED WITH MASTIC)
    FOR TEES AND DEAD ENDS: R = PA
    TAMP BACKFILL MATERIAL WHERE: P = TEST PRESSURE, PSI
    A = PIPE AREA, SQ INCHES P
    BETWEEN BLOCK & PIPE

    USE THE FORMULA BELOW TO CALCULATE BEARING R


    WEIGHT OF CONCRETE TO AREA OF THRUST BLOCKS FOR VERTICAL BENDS WITH
    RESIST 100% OF TOTAL THRUST DOWNWARD THRUST AND HORIZONTAL BENDS.

    AREA THRUST BLOCK (SQ FT) = R/SxD

    IN WHICH:
    R = (FROM FORMULA ABOVE, IN LBS)
    NOTES: S = ALLOWABLE SOIL PASSIVE PRESSURE IN LB/FT3
    1. THRUST BLOCK CONC VOLUMES REQUIRED D = DISTANCE IN FEET FROM GRADE DOWN TO
    FOR UPWARD THRUST SHALL BE CALCULATED CENTERLINE OF FITTING FOR HORIZONTAL BENDS;
    BY DESIGN ENGINEER. FOR VERTICAL BENDS USE D = 1'-0" FOR
    CALCULATION REGARDLESS OF DEPTH.

    VERTICAL BEND WITH UPWARD THRUST HORIZONTAL BEND OR VERTICAL BENDS


    WITH DOWNWARD THRUST
    NOTES
    1. THESE DETAILS SHALL APPLY TO ALL BURIED PRESSURE 5. FIGURE (100%) AT THRUST BLOCK INDICATES PERCENT
    PIPING WITHOUT WELDED, SOLVENT WELDED, FLANGED, OF TOTAL THRUST TO BE APPLIED FOR BEARING AREA.
    OR RIGID GROOVED END (VICTAULIC) COUPLINGS, AND 6. FITTINGS TO RECEIVE POLYETHYLENE WRAPPING SHALL
    ALSO ON ALL PIPING WHICH CONTAIN SLEEVE TYPE BE WRAPPED PRIOR TO POURING THRUST BLOCK.
    COUPLINGS OR FLANGE COUPLING ADAPTERS WHICH 7. THRUST BLOCKS FOR VERTICAL BENDS HAVING
    ARE NOT RESTRAINED AND IN AREAS OF NON-RESTRAINT DOWNWARD RESULTANT THRUSTS SHALL BE THE SAME
    WALL PENETRATIONS. WHEN REQUIRED, THRUST AS FOR HORIZONTAL BENDS.
    BLOCKING SHALL BE PROVIDED AT ALL BENDS, TEES, 8. BEARING AREA OF THRUST BLOCK SHALL NOT BE LESS
    WYES AND DEAD ENDS AS NECESSARY. THAN 1.0 SQ. FT.
    2. ARROWS ( ) INDICATE THRUST DIRECTION. 9. USE THE MAXIMUM INTERNAL PRESSURE ANTICIPATED
    3. CONCRETE FOR THRUST BLOCKS TO BE 6 SACK, 3/4" AGG (i.e. HYDROSTATIC TEST PRESSURE).
    3
    MAX 3000 PSI. 10. ALLOWABLE SOIL PASSIVE PRESSURE (LB/FT ) SHALL BE
    4. CAST CONCRETE THRUST BLOCK AGAINST UNDISTURBED PROVIDED BY GEOTECHNICAL ENGINEER.
    EARTH.

    FAIRFIELD-SUISUN PUMP STATION AND COLLECTION SYSTEM DESIGN STANDARDS


    DETAIL NO.

    SEWER DISTRICT
    1010 CHADBOURNE RD.
    FAIRFIELD, CA 94534-9700
    THRUST BLOCK DETAIL 2
    (707) 429-8930 PH DATE
    (707) 429-1280 FX (DETAIL INTENDED FOR USE BY DESIGN ENGINEER, NOT CONTRACTOR) 9/21

    Detail-02.dwg / Thrust Block

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