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Home / DOT Specifications / Pennsylvania / Publication 408 — Specifications / 711
Material (700-799)

711CONCRETE CURING MATERIAL AND ADMIXTURES

PA · 2026 Standard SpecificationsBook pages 687–687View official source ↗

705.3 705.3(f)

705.3LOAD- TRANSFER UNITS FOR REINFORCED AND PLAIN CEMENT CONCRETE PAVEMENTS —

(a)General. As shown on the Standard Drawings and as follows:
1.Coated Dowel Bars and Supporting Members. Section 709.1(a)2 , or ASTM A513, and AASHTO

T 253 Section 5, or Structural adequacy testing according to PTM No. 642 showing a maximum Linear Variable Differential Transformers (LVDT) differential deflection for dynamic and static loading, for both the approach and leave sides of the joint of not more than 7.5 mils at 1 million cycles and not greater than a 2.5-mil increase in the LVDT differential deflection at 10 million cycles from the corresponding 1 million cycle LVDT deflection. The differential deflection is the absolute difference in deflection bet ween the loaded and unloaded sides of the joint . Provide bars with their free end a true circle and without burrs.

2.Alternate Shaped Coated Dowel Bars. Bars with properties equivalent to conventional, round

steel -coated dowel bars may be used if documentation of conformance to applicable requirements of

3.Bondbreaking Requirements. AASHTO M 254

3.a Type A. Coating material develops sufficiently low bond strength with concrete, so a shop applied bond breaker or bond breaker lubricant is not necessary.

3.b Type B. Coating material develops bond strength with concrete, so a shop applied bond breaker

or bond breaker lubricant is necessary. Shop- applied bond breakers are to conform to the pull -out load requirements of AASHTO M 254.

(b)Dowel Bar Coating. AASHTO M 254 modified as follows:

Provide fusion- bonded epoxy coating as a Type B coating with a minimum non-abraded thickness of 8 mils. No more than 2 holidays per linear foot average, as detected with a 67.5 V holiday detector, are allowed. Repair areas damaged during shipment, handling, fabrication, or placement. The sum of all damaged areas to be repaired per linear foot may not exceed 2% of the bar surface area per linear foot. Repair a ll visible signs of rust and a ll visible defects. Repair is accomplished by means of a mechanical wire brush cleaning, or another acceptable procedure, followed by application of an approved epoxy paint utilizing the paint manufacturer's recommended procedure. Do not cover more than 5% of the total bar surface area with patching material.

(c)Mechanically Galvanized Dowel Bars. Provide galvanizing as specified in Section 1105.02(s)

(ASTM B695 and B696). Coating thickness to be not less than 3.4 mils (2.0 ounces per square foot).

(d)Stainless Steel Dowel Bars. If specified, provide stainless steel dowel bars and stainless -steel dowel

baskets conforming to ASTM A955/A 955M as specified in Section 709.1(f) for stainless steel reinforcement .

1.Storage. Sec
Source: Pennsylvania Department of Transportation Specifications, 2026 Edition. Pages 687–687 of 1,522.
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709 REINFORCEMENT STEEL
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713 MASONRY UNITS