ELEVATION DRILLED SHAFT FOUNDATION FOR CANTILEVER AND TRUSS TYPE E SIGN-340-B MICHIGAN DEPARTMENT OF TRANSPORTATION

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1 Steel template must be kept horizontal at all times after installation Heavy hex nuts required for template and anchor bolt cage assembly \ Anchor bolts Solid flat washers 2" Max * 3" Min * Anchor projection (SEE TABLE 3) 90 3/4" /2" x 45 bevel 3" min clearance (Top of bars & tie) " * The top of foundation shall be 3" min 2" max above the finished grade. The maximum slope around the footing shall be :2. Keep anchor bolts plumb Anchor bolt cage shall be shop fabricated from # bar circle or 3/4" square stock or approved equal, welded to inside of anchor bolts to hold alignment. No crossbracing is allowed in the center of the bolt circle. Equally spaced bundled bars inside confinement reinforcement. See detail of " " (Max.) "D" (See sheet 5 & ) Section AA and Steel Reinforcement Chart on sheet 4. A A Steel reinforcement bar circle or equivalent continuous spiral tie as confinement reinforcement located outside of vertical steel bars. See sheet 4 for dimensions required per installation & foundation type. 3" 3" Dia. See chart (sheet 5 & ) 3" " ELEVATION DEPARTMENT DIRECR Kirk T. Steudle FOR Michigan Department of Transportation DRILLED SHAFT FOUNDATION PREPARED BY DESIGN DIVISION APPROVED BY: DIRECR, BUREAU OF FIELD SERVICES FOR CANTILEVER AND TRUSS TYPE E DRAWN BY: DHD CHECKED BY: AJU APPROVED BY: DIRECR, BUREAU OF HIGHWAY DEVELOPMENT SIGN340B OF 7

2 2" Dia. anchor bolts equally spaced at 45 \ Column 30"! Bolt \ circle 4" wide steel template 3/4" stock thickness 3"* 0"* Template handle * Or as required PLAN VIEW DRILLED SHAFT FOR TYPE E CANTILEVERS 32"! Bolt \ circle 4" Wide steel template 3/4" stock thickness \ Column Template handle 3"* 0"* 2anchor bolts 2" dia. equally spaced at 30 on a 32" dia. bolt circle. * Or as required PLAN VIEW DRILLED SHAFT FOR TYPE E TRUSS "! Bolt \ circle 4" Wide steel template 3/4" stock thickness \ Column Template handle 3"* 0"* Anchor bolts 2" dia. equally spaced at 22.5 on a 3" dia. bolt circle. * Or as required PLAN VIEW DRILLED SHAFT FORTYPE E TRUSS 0 40 SIGN340B 2 OF7 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

3 3" 2" 0 /2" Embedment Projection 9 " ANCHOR BOLT DETAIL STRUCTURE TYPE ANCHOR BOLT TABLE PROJECTION NUMBER REQ D TYPE E CANTILEVER TYPE E TRUSS 0 40 TYPE E TRUSS 8 /2" 0" 0" 8 2 Nuts: 3 per anchor bolt Washers: 3 per anchor bolt NOTES:. Steel reinforcement shall be per MDOT Standard Specifications for Construction. 2. Anchor bolts, nuts and washers shall be per section of the MDOT Standard Specifications for Construction. 3. A template and anchor bolt cage shall be shop fabricated, assembled, and approved by MDOT prior to shipping. 4. Diameter of bolt holes in template shall be /" larger than anchor bolt diameter. 5. The template and handles shall be well supported, horizontally level and firmly anchored in place a minimum of hours after the concrete placement is completed.. Take care during concrete placement to avoid displacing the anchor bolts. Concrete shall be in accordance with MDOT Standard Specifications For Construction, Subsection J. 7. No hammering on the anchor bolts or template will be allowed. 8. After template is removed, thread nuts on to bolt flush with the bolt end to protect threads until sign support is erected. SIGN340B 3 OF7 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

4 STRUCTURE TYPE STEEL BAR REINFORCEMENT CHART FOUNDATION VERTICAL CONFINEMENT DIAMETER REINFORCEMENT REINFORCMENT (in) BAR NUMBER BAR BARS BAR SIZE OF BARS RADIUS SIZE SPACING TYPE E CANTILEVER 20 /4" " 3 20 /4" " TYPE E TRUSS 23 /4" " /4" " See sheets 5 and for foundation information. Vertical reinforcement bars shall be bundled side by side, 3 bars per bundle all in the same plane. Provide a 0 9" lap, stagger the ends of the lap by the amount of the lap length. Provide a 3 0" lap for # bar circles or a 2" lap if bar circle lap is welded. TYPE E CANTILEVER " TYPE E TRUSS " DIAMETER TYPE E TRUSS " DIAMETER SECTION AA ( ) TYPE E TRUSS 72" DIAMETER Lap Radius Length Length VERTICAL REINFORCEMENT CONFINEMENT REINFORCEMENT REINFORCEMENT DETAILS SIGN340B 4 OF7 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

5 SPAN NONCANTILEVER TRUSS FOUNDATION CHART SOIL TYPE SOIL CONDITION Suc N DIAMETER (in) DEPTH "D" (ft) 5 N 0 37 CONCRETE (cyd) N N N Suc = Ultimate shear in cohesive soil (lbs/ft2) N = Number of blows / foot of penetration (ASTM testing procedure D58) * 72"! foundation provided for information only, site specific foundation design required. NOTE: IF SOILS WITH SPT NVALUES GREATER THAN 50 BPF DOMINATE THE LOWER /2, OR MORE, OF A DRILLED SHAFT, OR IF ROCK SOCKETS FOR THE DRILLED SHAFTS ARE REQUIRED, THEN A DETAILED SITE SPECIFIC DESIGN FOR THE DRILLED SHAFT FOUNDATION IS REQUIRED. SIGN340B 5 OF7 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

6 CANTILEVER FOUNDATION CHART CANTILEVER TYPE SOIL TYPE SOIL CONDITION Suc N DIAMETER (in) DEPTH "D" (ft) CONCRETE (cyd) 5 N E Suc = Ultimate shear in cohesive soil (lbs/ft2) N = Number of blows / foot of penetration (ASTM testing procedure D58) NOTE: IF SOILS WITH SPT NVALUES GREATER THAN 50 BPF DOMINATE THE LOWER /2, OR MORE, OF A DRILLED SHAFT, OR IF ROCK SOCKETS FOR THE DRILLED SHAFTS ARE REQUIRED, THEN A DETAILED SITE SPECIFIC DESIGN FOR THE DRILLED SHAFT FOUNDATION IS REQUIRED. SIGN340B OF7 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.

7 Concrete barrier, split S= Length of tapered section S= Length of tapered section Place joint filler per standard plan R49 " expansion jt (see expansion jt detail, standard plan R49) Anchor bolt " (Min.)! Varies " (Min.) foundation Place glare screen on the side approaching the sign support foundation 4" Concrete filler slab PLAN VIEW 2"< Type A or B barrier DRILLED SHAFT! S " 0" 72" 78 Top of barrier & top of foundation Anchor bolt Top of pavement Where concrete glare screen is specified on the plans, end the glare screen at the " expansion joint (see standard plan R7series) foundation ELEVATION MEDIAN BARRIER FOUNDATION DETAILS NOTES: When the foundation will be located within the median barrier, use standard plan R49 series. Increase the foundation depth by the height of the barrier (not including the height of the glare screen if present) and locate the top of foundation at the top of barrier. Provide a parallel barrier section along the drilled shaft foundation. Specific details vary depending on the use of Type A or Type B Barrier. For barrier details not shown see Standard Plan R49. SIGN340B 7 OF7 NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE.