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The Texas Department of Transportation outlines specifications regarding the proper dimensions for F-Shape to low profile precast concrete traffic barriers (PCTB), Type T, including general notes, section details, and more.The transition is from CSB (F-Shape) to LPCB (Low Profile).

Texas F-Shape to Low Profile Precast Concrete Traffic Barrier (PCTB) (Type T) General Notes

The Texas Department of Transportation’s general instructions are as follows:

1. Concrete should be Class H with a minimum compressive strength of 3,000 psi.
2. Where used, rebar reinforcement should be Grade 60 and conform to ASTM A615.
3. These details cover barrier per Item 512, “Portable Concrete Traffic Barrier.”
4. Precast barrier transition lengths should be 10 feet, unless otherwise specified.
5. All precast barrier edges should have a ¾” chamfer or tooled radius.
6. All steel assemblies for joint should be galvanized after fabrication in accordance with Item 445, “Galvanizing.”
7. Joint connection systems are considered subsidiary.
8. For rebars, use 2” bending pin unless otherwise shown.

Texas F-Shape to Low Profile Precast Concrete Traffic Barrier (PCTB) Specifications (Type T)

Texas PCTBs Type T should conform to the following specifications, according to the Texas Department of Transportation.Plan and Elevation ViewsBarrier segments include two 24” lifting slots, a 1” diameter PVC for drainage pipes, and a trough for bolt joint connections. The LPCB bottom measures 26” and the LPCB top measures 28”. The CSB bottom measures 9-1/4” on the top and 24” on the bottom.The formwork transition lines measure 3” long. On the right end of each barrier, there is a 1-1/2” nominal diameter Sch 40 steel pipe for 1-1/4” diameter connection bolts.Section A-AThere are two holes running through the center of the barrier. These holes are stacked vertically and spaced 6” apart from each other; the lower hole is spaced 12-3/4” from the bottom of the barrier, and the top hole is spaced 8-3/4” from the top of the barrier.Barriers measure 24” wide at the bottom and 9-1/2” wide at the top.Section C-CSection C-C of the barrier measures 26” at the bottom, 28” at the top, and 20” tall. Barriers are symmetrical in nature.Detail J for CSB-Side Block-OutsThis section of the barrier includes an upper leave-out and a lower-leave out. The lower leave out measures 11-1/8” long and the upper leave out measures 9-3/8” long.Barrier Transition Elevation Reinforcement PlacingReinforcement bars are spaced both vertically and horizontally within the barrier. Starting with vertical bars from left to right, the spacing between them is as follows:

• V1 – V2 = 3-1/8”
• V2 – V3 = 13”
• V3 – V4 = 4”
• V4 – V5 = 4”
• Bars V5 to V14 are each spaced 5-1/2” apart from each other
• Bars V14 to V18 are spaced 4-1/2” apart from each other
• V18 – V19 = 4”
• V19 – V20 = 3-1/2”
• V20 – V21 = 3-1/2”

On the left side of the barrier, the horizontal bars are stacked at different intervals. The distance between each horizontal bar and the ground line is as follows:

• L4 = 6-1/4”
• L3 = 9-1/8”
• L2 = 15-5/8”
• L2 = 18-7/8”
• L1 = 28-1/8”

On the right side of the barrier, the horizontal bars are stacked at different intervals. The distance between each horizontal bar and the ground line is as follows, from the lowest H1 to the highest H1: 4-5/8”; 7-1/2”; 12-3/4”; 17-1/4”.This blog post is an interpretation of specifications by the Texas Department of Transportation (TxDOT). Please consult with TxDOT' most recent requirements for definitive information.

Buy and sell with Eiffel Trading

Eiffel Trading’s online platform markets a large variety of new and used precast barrier wall options, including various DOT specs, low profile barrier, f-shape barrier, and more. In addition, our inventory of marine equipment ranges from sectional barges, to tug boats, to crew boats, and everything in between.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

The Texas Department of Transportation outlines specifications regarding the proper dimensions for F-Shape precast concrete traffic barriers, (Type 4, 10 foot segments), including general notes, elevation view details, joint connection details, and more.

Texas Precast Concrete Traffic Barrier (PCTB) Type 4 General Notes

The Texas Department of Transportation’s general instructions are as follows:

1. The 10 foot __<a href="https://www.eiffeltrading.com/marketplace/construction-material/barrier-wall/aee2a316-9700-ca6b-8ed5-8b33d171c4b1?utmsource=Website&utmmedium=blog&utm_campaign=Blog%20Redirect

" target="_blank">barrier</A> is intended for maintenance applications of short duration periods__. The 10 foot barrier is limited to use in temporary work zone conditions not to exceed two calendar months, unless approved in writing by the TxDOT Engineer, noting the duration and location of the barrier placement in the written approval.

1. 30 foot Type 1 barrier and 10 foot Type 4 barrier sections should not be mixed in a single run of barrier.
2. Barrier lengths other than 10 feet for Type 4 barriers are not allowed.
3. Concrete should be Class H, with a minimum compressive strength of 3,600 psi.
4. Where used, rebar reinforcement should be Grade 60 and conform to ASTM A615.
5. Only the Type X joint connection system is to be used with Type 4 barrier and is considered subsidiary. See CSB (1), Sheet 1 of 2, for Type X connection details.
6. Conduit troughs may be omitted, as shown elsewhere or as directed by the Engineer.
7. Usage of the 10 foot Type 4 CBS barrier requires a minimum of 100 linear feet. Shorter lengths than this should be discussed with the design division.

Texas Precast Concrete Traffic Barrier (PCTB) Type 4 Details

Texas PCTB Type 4 should conform to the following specifications, according to the Texas Department of Transportation.Elevation ViewPCTBs measure 10’ long, plus or minus 1”. Each barrier requires (#4) S1 bars (2) with Type X Joint connection, and S1 bars are required with WWR reinforcement option. Each barrier segment includes two lifting slots that are 24” long x 3” deep. The lifting slots are spaced 3’-0” apart from each other, and 1’-6” from each end of the barrier. Barriers include #4 S3 bars (17) and a 2” cover at each barrier end.End ViewPCTBs measure 24” wide at the bottom and 9-1/2” wide at the top. They stand 32” tall. All precast barrier edges should have a ¾” chamfer or tooled radius. There is a 6” conduit trough centered on the barrier running through its center, a 3” vertical reveal and a 1” ACP. When 1” ACP is not used for lateral support, the barrier’s dimensions should be adjusted accordingly. Barriers have a 10” R. The height of the lower slope is 7” and the height of the upper slope is 22”.S1 Bar (#2) DetailsS1 Bars (#2) are vase-shaped and measure 6” on the short “closed” end and 10-5/8” on the wide “open” end. The bar is symmetrical in nature and measures 1’-9” long. Each symmetrical arm of the bar can be split into two “sections” – the long section and the short section. The long section measures 1’-4” long and the short section measures 5” long.S3 (#4) Bar DetailsS3 Bars (#4) are U-shaped and measure 6” on the short “closed” end and 1’-5-1/4” on the wide “open” end. The bar is symmetrical in nature and measures 2’-2” long. Each symmetrical arm of the bar can be split into two “sections” – the long section and the short section. The long section measures 1’-9-1/4” long and the short section measures 4-3/4” long. On the closed section of the bar, there is a 2” diameter bending pin (typ.).Schedule of Reinforcement for 10 Foot Precast SectionsTwo S1 bars are required with the use of WWR reinforcement options. The S1 bars may need a slight modification to fit within the WWR cage, as directed by the Engineer.Joint Connection Type XJoint Type X Connection is required with 10 foot barrier lengths.Type X Joint installation includes one upper connection and one lower connection. Each connection is made with a 7/8” diameter x 29” long A325 threaded rod. There is a plate washer and nut on each end.The table below shows the approximate per L.F. quantities:This blog post is an interpretation of specifications by the Texas Department of Transportation (TxDOT). Please consult with TxDOT' most recent requirements for definitive information.

Buy and Sell with Eiffel Trading

Eiffel Trading’s online marketplace allows contractors to buy and sell new and used materials and equipment, including various types of barrier wall. Our current barrier wall inventory ranges from single slope barrier, to low profile barrier, to f-shape barrier, and everything in between. In addition, our construction equipment inventory includes drilling barriers, bridge overhang brackets, bridge deck finishers, and much more.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

The Texas Department of Transportation (TxDOT) outlines specifications regarding the proper dimensions for F-Shape to low profile precast concrete traffic barrier (PCTB) reinforcing bars (Type T) including general notes and rebar specifications.The transition is from CSB (F-Shape) to LPCB (Low Profile) precast concrete traffic barrier (PCTB).

Texas F-Shape to Low Profile Precast Concrete Traffic Barrier (PCTB) Reinforcing Bar Dimensions (Type T) General Notes

The Texas Department of Transportation’s general instructions are as follows:

1. Concrete should be Class H with a minimum compressive strength of 3,000 psi.
2. Where used, rebar reinforcement should be Grade 60 and conform to ASTM A615.
3. These details cover barrier per Item 512, “Portable Concrete Traffic Barrier.”
4. Precast barrier transition lengths should be 10 feet, unless otherwise specified.
5. All precast barrier edges should have a ¾” chamfer or tooled radius.
6. All steel assemblies for joint should be galvanized after fabrication in accordance with Item 445, “Galvanizing.”
7. Joint connection systems are considered subsidiary.
8. For rebars, use 2” bending pin unless otherwise shown.

Texas F-Shape to Low Profile Precast Concrete Traffic Barrier (PCTB) Reinforcing Bar Dimensions (Type T)

Rebar for Texas F-Shape to Low Pro PCTB should conform to the following specifications, according to the Texas Department of Transportation.(#5) Rebar – L1The L1 (#5) Rebar is a bent-angle rebar that can be divided into two sections: the long section and the short section. The long section measures 7’-1/2” long, and the short section measures 2’-4-1/16” long. There is a 171 degree angle/bend between these two sections.(#5) Rebar – L2The L2 (#5) Rebar is a bent-angle rebar that can be divided into two sections: the long section and the short section. The long section measures 7’-4-5/8” long, and the short section measures 2’-4” long. There is a 174 degree angle/bend between these two sections.(#5) Rebar – L3The L3 (#5) Rebar is a bent-angle rebar that can be divided into two sections: the long section and the short section. The long section measures 6’-11-3/4” long, and the short section measures 2’-8-9/16” long. There is a 172 degree angle/bend between these two sections.(#5) Rebar – L4The L4 (#5) Rebar is a bent-angle rebar that can be divided into two sections: the long section and the short section. The long section measures 6’-11-3/4” long, and the short section measures 2’-8-9/16” long. There is a 174 degree angle/bend between these two sections.(#5) Rebar – H1The H1 Rebar (#5) is a U-shaped rebar with three sides, plus one open end. The bottom of the U measures 22-1/8” long, and each arm of the U measures 3’-1-3/4” long. The open end of the rebar measures 16-5/8” across. The arms of the U bend in slightly, offset at a measurement of 2-1/2”.(#4) Rebar – V1This rebar is a U-shaped rebar with three sides, plus one open end. The bottom of the U measures 6-1/4” long, and each arm of the U measures 25-5/8” long. The open end of the rebar measures 16-7/8” across. The ends of each arm of the U is bent, and this bent section measures 4-1/8”.(#4) Rebar – V2This rebar is a U-shaped rebar with three sides, plus one open end. The bottom of the U measures 6-1/4” long, and each arm of the U measures 25-5/8” long. The open end of the rebar measures 16-7/8” across. The ends of each arm of the U is bent, and this bent section measures 4-1/8”.(#4) Rebar – V3This rebar is a U-shaped rebar with three sides, plus one open end. The bottom of the U measures 6-1/4” long, and each arm of the U measures 21” long. The open end of the rebar measures 10-1/2” across. The ends of each arm of the U is bent, and this bent section measures 4-7/8”.(#4) Rebar – V4This rebar is a U-shaped rebar with three sides, plus one open end. The bottom of the U measures 6-1/4” long, and each arm of the U measures 25-5/8” long. The open end of the rebar measures 16-7/8” across. The ends of each arm of the U is bent, and this bent section measures 4-1/8”.(#4) Rebar – V5This rebar is a U-shaped rebar with three sides, plus one open end. The bottom of the U measures 6-1/4” long, and each arm of the U measures 25-5/8” long. The open end of the rebar measures 16-7/8” across. The ends of each arm of the U is bent, and this bent section measures 4-1/8”.(#4) Rebar – V6This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 25-7/8” long and 7-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V7This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 25-1/8” long and 8-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V8This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 23-3/8” long and 9-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V9This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 22-1/2” long and 10-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V10This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 21-1/2” long and 11-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V11This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 21” long and 12-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V12This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 20” long and 13-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V13This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 19-1/2” long and 14-1/2” wide. The overlapping ends measure 5” each.(#4) Rebar – V14This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 18-1/2” long and 15-3/8” wide. The overlapping ends measure 5” each.(#4) Rebar – V15This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 17-7/8” long and 16-1/8” wide. The overlapping ends measure 5” each.(#4) Rebar – V16This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 17-1/2” long and 7” wide. The overlapping ends measure 5” each.(#4) Rebar – V17This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 18-1/2” long and 17-3/4” wide. The overlapping ends measure 5” each.(#4) Rebar – V18This rebar is a U-shaped rebar with two interior sides. The rebar measures 17-7/8” long in total, and 18-1/2” wide in total. The width of each interior side is 4-1/2”, and the length of the interior sides are 14-5/8”.(#4) Rebar – V19This rebar is a U-shaped rebar with two interior sides. The rebar measures 17-1/4” long in total, and 19-1/4” wide in total. The width of each interior side is 4-1/2”, and the length of the interior sides are 14”.(#4) Rebar – V20This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 20” long and 16-3/4” wide. The overlapping ends measure 5” each.(#4) Rebar – V21This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 20-1/2” long and 16-1/8” wide. The overlapping ends measure 5” each.This blog post is an interpretation of specifications by the Texas Department of Transportation (TxDOT). Please consult with TxDOT' most recent requirements for definitive information.

BUY AND SELL WITH EIFFEL TRADING

Eiffel Trading’s online marketplace hosts a wide variety of precast barrier types all over the Southwest region, including F-Shape barrier, low profile barrier, single slope barrier, and every type in between. Furthermore, our construction equipment inventory ranges to include concrete formwork, pile drivers, shoring towers, and much more.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

Combi walls are constructed to serve as retaining walls for heavy marine construction purposes that require a significant amount of stiffness and high bearing capacity. They are used as tougher alternatives to regular sheet pile walls or secant walls. Combi walls are most often made up of a combination of sheet pile and steel pipe. Their steel pipe components bolster resistance to force, and their steel sheet pile components connect gaps between the pipes to make the structure secure, strong, and stable. They can act as temporary structures or permanent structures, depending on the type of marine construction and its short-term and long-term needs.

Installation of Combi Walls

A combi wall’s steel pipes are usually driven as bored piles. They are sometimes backfilled with concrete as well as reinforcing steel, but this isn’t always the case. Backfilling increases strength. During the process of driving the steel pipes, installation crews need to be careful to ensure that they are driven straight and vertical. They need to be perfectly parallel to each other and at precise distances apart. The use of a temporary pile-driving template frame is recommended to ensure the successful and proper installation of a combi wall’s steel pipes. Methods like targeted ground treatment and jetting can also be useful to help ensure pipes are driven properly. Once steel pipes are secured in the ground, a final inspection should be done before sheet piles are added to the equation.

Piling Continued

Once the steel pipes are in place, steel sheet piles are driven into the gaps between the pipes, most often using a vibratory hammer. Piles are aligned with a combi wall pipes by utilizing welded interlocking points. Pile cross sections using H-piles may also be used in the construction of a combi wall. Furthermore, anchors or horizontal struts may be put into place behind a combi wall to stabilize it and provide it with greater load bearing capabilities.

Specific Applications of Combi Walls

Below are some of the types of marine construction projects in which combi walls may be used:

• Lake filling projects
• Wharf construction
• Bridge construction
• Bridge foundation projects.
• Railway construction
• Cofferdam repair and construction
• Roadway construction
• Expansion of Ports
• Levee construction
• Pier construction
• Dam repair and construction
• Building foundation projects
• And more

Any project where a traditional sheet pile wall does not suffice in terms of bearing strength, a combi wall can be used to provide the load-bearing capacity and stiffness needed. Additionally, a combi wall can be used in order to lower costs in any project in which a secant wall might be used. Combi walls are considerably less expensive and less time consuming to construct than secant walls. They also have the added benefit of being much easier to uninstall if they are intended for temporary use. And their materials can be easily re-used for other projects, whether those other projects involve the construction of another combi wall or if they simply require repurposing of materials.

FINAL THOUGHTS

Overall, combi walls are a cost-effective solution for a variety of marine construction projects where a retaining wall or similar structure is needed but other options may not fit the bill when it comes to strength or budgetary concerns.

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Eiffel Trading’s online marketplace allows contractors to buy and sell a wide variety of construction materials and equipment. Our inventory includes many types of piling, including used sheet pile, new and used h pile, new and used wide flange beams, and much more. In addition, our foundation equipment inventory ranges from augers, to pile driving machines, and everything in between.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

Caissons are concrete, wood, or steel structures utilized for the purpose of dewatering as the foundations of bridges, ports, piers, and quay walls are constructed. Generally, caissons are permanent structures and become a part of the final product of deep foundations. This is a major difference between caissons and cofferdams, which are used for many of the same purposes but are often temporary structures. Caissons are watertight and sized to meet the needs of the project. They come in various shapes, sizes, and types, depending on the needs of the particular marine construction. They are often hollow until they are securely in place on clay or bedrock. Once in place, they are typically filled with concrete. Different pile types are often used including bearing piles and sheet piles.Some of the benefits of caissons of all types are that they are fairly economical in comparison to other dewatering alternatives. Additionally, the significant height and weight of most caissons allows them to penetrate quite deeply and securely into the earth. A drawback to caissons is that workers must be trained and skilled in utilizing them to avoid potential hazards associated with their interiors.As previously noted, there are various types of caissons suited to different purposes. Below are six of the most common types:1. Box Caissons – These caissons are made up of rows of boxes. The prefabricated boxes each have four sides and a bottom. They are hollow before they reach their final location. They are floated to their final location of a foundation, and once they are in place, their hollow insides are filled with concrete. Box caissons are a popular option for bridge pier foundations, and they are a relatively affordable choice in comparison to other types of caissons. Box caissons can be made from various types of material, including steel sheet pile and other piling materials.2. Open Caissons – Open caissons are very similar to box caissons, except their prefabricated structures do not have a bottom, and they merely consist of four sides. Open caissons are an excellent choice for use in soft ground areas (soft clay areas, riverbeds, etc.) They are not ideal for use in areas where there are sizeable ground obstructions. These caissons are common in foundation work involving piers, pump stations, tunneling, and deep manholes. Oftentimes, open caissons are constructed using steel sheet pile.3. Pneumatic Caissons – Pneumatic caissons are made up of bottomless, top-sealed boxes. They are filled with air that has been pressurized. Once they are placed in an area of water, they are able to push water, mud, and sediment out through themselves. Workers are then able to relocate mud and sediment, as it is being pushed out. Airflow to a pneumatic caisson must be constant until all mud, rock, water etc. is removed and the caisson reaches bedrock. At which point, airflow is stopped, and the caisson boxes are filled with concrete in a dry environment.4. Monolithic Caissons – These caissons are also sometimes called “monoliths.” They are the largest type of caisson. They are constructed within quay walls where extra resistance is needed against impacts of ships and other vessels. Quay walls are earth-retaining structures utilized to dock vessels and barges for the transport of materials and goods.5. Excavated Caissons – These are caissons that are used in excavated sites. They are most often cylinder-shaped as opposed to box-shaped. Once they are floated in place, they are filled with concrete.6. Floating Caissons – With box-shaped exteriors and cylinder-shaped cavities, floating caissons are a top choice for foundation projects for port construction, wharf construction, and berthing facility construction. Floating caissons are also sometimes referred to as “floating docks.”Determining the best type of caisson for the job should take factors like the type of construction and natural environment into consideration. All of the caisson categories listed above come with unique benefits for particular applications.

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Eiffel Trading’s online marketplace hosts a wide variety of piledriving materials, including used sheet pile, new and used h pile beams, new and used steel pipe, and much more. Furthermore, our foundation equipment inventory ranges from crawler drill rigs, to vibratory hammers, and much more.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

The Texas Department of Transportation outlines specifications regarding the proper dimensions for precast concrete traffic barrier (PCTB) end joints, including connection plate details, joint installation details, joint connection types, and more.

Texas Precast Concrete Traffic Barrier (PCTB) End Joint Connections

All steel assemblies for PCTB joints should be galvanized after fabrication in accordance with Item 445, “Galvanizing.” The details and specifications for end joint connections outlined by the Texas Department of Transportation are as follows:Connection Plate DetailsConnection plates measure 4” long x 4-1/2” wide x 3/8” thick, with a 1-5/8” diameter hole in the center of the plate. Furthermore, there should be a 1-1/2” std. steel connection pipe running through the center of each plate (through the allotted hole).One connection plate is required per barrier assembly. Four connection plates are required per joint. All steel fittings for joint Type X should be galvanized after fabrication in accordance with Item 445.Type X Joint Installation DetailsType X Joint installation includes one upper assembly (typ.), one lower assembly (typ.), one upper connection pipe, one lower connection pipe, four connection plates, and two #5 deformed anchor bars (typ.) per side. The upper connection hardware should not extend beyond the concrete face of the barrier. Each connection plate includes a threaded rod with two plate washers and two nuts within the connection pipe (typ.).Connection Bolt or Threaded Rod DetailEach joint requires two threaded rods (or equivalent hex head bolts) with two PL 3/8” x 3” x 3” plate washers and two std. hex nuts. The rod measures 2’-5” long and is a 7/8” diameter A325 (or equivalent) threaded rod. The hex nut should extend a minimum of 1” (typ.) beyond the washer on each end. The hex nuts should be std. 7/8” hex nuts (typ.).The connection hardware should not extend beyond the concrete face of the barrier. Hex head bolts may be provided. The proper length of all hardware should be verified.Isometric Typical Welded AssemblyFour assemblies are required per joint (two upper and two lower). The assemblies include two #5 deformed bar anchors, a steel connection plate, a connection pipe, and a threaded rode within the connection pipe.Deformed Bar Anchor DetailsBars are #5 Reinforcing Bar Grade 60 and measure 3’-8” in length. Two bars are required per assembly, and eight are required per joint. The arm of the bar is angled at 70 degrees.Upper Connection Pipe DetailsOne steel pipe is required per upper assembly, and two are required per joint. Pipes should measure 1-11/16” long.Lower Connection Pipe DetailsOne steel pipe is required per upper assembly, and two are required per joint. Pipes should measure 12-1/2” wide and be 1-1/2” std. pipe.Proprietary Joint Connections (CSB)The Texas Department of Transportation outline general rules for proprietary joint connections for concrete safety barriers (CSB). Two proprietary joint connections are acceptable as alternates to the Type X connection. These joint connection types are:

1. J-J Hooks
2. Quick-Bolt

If one of these connection systems are exclusively specified in the plans, prior approval for sole source use must be obtained. Details for the connection components and barrier reinforcement for these systems will be shown on the manufacturer’s shop drawings furnished to the Engineer.This blog post is an interpretation of specifications by the Texas Department of Transportation (TxDOT). Please consult with TxDOT' most recent requirements for definitive information.

BUY AND SELL WITH EIFFEL TRADING

Eiffel Trading’s online marketplace allows contractors to sell unneeded assets, including various types of barrier wall including DOT spec. barrier, f-shape barrier, single slope barrier, low profile barrier, and much more. Furthermore, our construction equipment inventory also extends to include foundation equipment, concrete formwork, and much more.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

The Texas Department of Transportation outlines specifications regarding the proper dimensions for Type 1 F-shape precast concrete traffic barriers (PCTB), including general notes, plan view details, bar details, and more.

Texas Type 1 F-Shape Precast Concrete Traffic Barrier (PCTB) General Notes

The Texas Department of Transportation’s general instructions are as follows:

1. Concrete should be Class H with a minimum compressive strength of 3,000 psi.
2. Where used, rebar reinforcement should be Grade 60 and conform to ASTM A615.
3. Precast barrier length should be 30 feet, unless otherwise specified.
4. All precast barrier edges should have a ¾” chamfer or tooled radius.
5. All concrete, reinforcement, joint connection systems, grout, etc. as shown, are considered as part of the barrier payment.
6. All steel assemblies for joint should be galvanized after fabrication in accordance with Item 445, “Galvanizing.”
7. Regardless of the method of handling, barrier lifting points should be approximately 7.5 feet from the ends of the barrier. Lifting devices and attachments to barrier sections should be approved by the Engineer.
8. Surface finishing and grouting should be two parts sand and one part cement with enough water to make the mixture plastic. Grouting should be done in a manner that will assure a smooth surface. Surface finishing should be considered subsidiary to the various bid items involved.
9. Conduit trough when required should be shown elsewhere on the plans, or as directed by the Engineer.

Texas Type 1 F-Shape Precast Concrete Traffic Barrier (PCTB) Specifications

Texas PCTBs should conform to the following specifications, according to the Texas Department of Transportation.Reinforcements for Precast Concrete Safety Barrier (Type 1)Barriers measure 30’-0” (plus or minus 1”) long. Each barrier includes #4 S1 Bars with type X joint connection, #4 S3 Bars, and #5 R Bars. The S1 Bars are required with a WWR reinforcement option. There is a max spacing of 12” between the #4 S3 Bars.Barriers also include 2” diameter lifting pipe holes which can fit steel pipe or Sch. 40 PVC. As mentioned in note 4, Regardless of the method of handling, barrier lifting points should be approximately 7.5 feet from the ends of the barrier. Lifting devices and attachments to barrier sections should be approved by the Engineer.In addition to the reinforcing bars, barriers are required to include two drainage slots that measure 36” long x 3” deep, beginning 6’-0” from each end of the 30’-0” barrier segment.End View for Precast Concrete Safety Barrier (Type 1)When viewed from an end view, barriers measure 32” tall and include a ¾” chamfer (typ.) on the top and sides. There are two lifting pipe holes which are stacked vertically over each other and spaced 6” apart. The distance from the top of the barrier to the center of the upper hole is 11”, and the distance from the bottom of the barrier to the center of the bottom hole is 15”.Barriers measure 9-1/2” wide at the top and 24” wide at the bottom. The break point occurs 10” from the ground line. The bottom slope is 7” tall and 4-3/4” wide; the upper slope is 22” tall and 2-1/2” wide. There is a conduit trough running through the center of the barrier, which is 6” wide and 3” tall. There is a 3” or 4” vertical reveal and a 1” ACP. However, it should be noted that when the 1” ACP is not used as lateral support for permanent barrier placement, a permissible method of attaining the equivalent lateral support may be used. Similarly, when the 1” ACP is not used for lateral supports, the height of the vertical reveal should be adjusted accordingly.#4 S3 Bar DetailsS3 Bars (#4) are U-shaped and measure 6” on the short “closed” end and 1’-7” on the wide “open” end. The bar is symmetrical in nature and measures 2’-3” long. Each symmetrical arm of the bar can be split into two “sections” – the long section and the short section. The long section measures 1’-9-1/4” long and the short section measures 5-3/4” long. On the closed section of the bar, there is a 2” diameter bending pin (typ.).#2 S1 Bar (Joint Type X) DetailsS1 Bars (#2) are vase-shaped and measure 6” on the short “closed” end and 10-5/8” on the wide “open” end. The bar is symmetrical in nature and measures 1’-9” long. Each symmetrical arm of the bar can be split into two “sections” – the long section and the short section. The long section measures 1’-4” long and the short section measures 5” long.Deformed Bar Anchor DetailsBars are #5 Reinforcing Bar Grade 60 and measure 3’-8” in length. Two bars are required per assembly, and eight are required per joint. The arm of the bar is angled at 70 degrees.Upper Connection Pipe DetailsOne steel pipe is required per upper assembly, and two are required per joint. Pipes should measure 1—11/16” long.Lower Connection Pipe DetailsOne steel pipe is required per upper assembly, and two are required per joint. Pipes should measure 12-1/2” wide and be 1-1/2” std. pipe.This blog post is an interpretation of specifications by the Texas Department of Transportation (TxDOT). Please consult with TxDOT' most recent requirements for definitive information.

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Eiffel Trading’s barrier wall inventory ranges from used f-shape barrier wall, to used low profile barrier wall, to used single slope barrier wall, and everything in between. Furthermore, our construction equipment inventory includes foundation equipment, concrete equipment, and much more.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

The Texas Department of Transportation (TxDOT) outlines specifications regarding the proper pinned placement for precast concrete traffic barriers F-Shape, Type 1 (PCTB), including general notes, pin details, side view details, and more.

Texas Precast Concrete Traffic Barrier (PCTB) Precast Pinned Placement General Notes

The Texas Department of Transportation’s general instructions are as follows:

1. These details provide a method of laterally restraining precast concrete barrier to limit deflections under normally expected passenger vehicle impacts. These details are intended for use in work zones, primarily on bridge decks or pavement where temporary barriers must be placed less than two feet from the longitudinal edge of the deck or drop off and parallel to the direction of travel. Other applications of these details are acceptable as directed by the Engineer.
2. Each precast concrete barrier section should have a minimum of four or a total of eight 1/38” diameter holes formed or cored through the barrier. The center lines of the holes are shown in the hole location detail. If rebar is encountered, the entry point may be shifted 2” plus or minus longitudinally along the barrier. The eight holes are spaced along the length of the barrier as described in Detail 1.
3. The drilling of the travel surface is accomplished by placing the pre-drilled barrier section on the travel surface in the desired position. Then the hole is drilled with the bit passing through the hole in the barrier. The bit is to be inserted into the hole in the barrier so that the travel surface is drilled to a point which is slightly more than the pin length.
4. Note that steel washers have been welded to the top of the steel pins to aid in the removal of the pins, when the barrier is removed.
5. See CSB standard sheets for reinforcement requirements and joint connection types.
6. The forming or coring of holes in the barrier, drilling of holes in bridge deck or pavement, fabrication and materials for the 1-1/4” pins, installation of pins, and any repair to the barrier should be considered as subsidiary to the barrier bid items.
7. The barrier and travel surface will be repaired as directed by the Engineer in accordance with Item 429, “Concrete Structure Repair.”
8. Provide galvanized bolts, nuts and plate washers. All steel pins should be galvanized after fabrication in accordance with Item 445, “Galvanizing.”
9. Weight of barrier is approximately 440 pounds per foot.

Texas Precast Concrete Traffic Barrier (PCTB) Pinned Placement

Texas PCTB pinned placement should conform to the following specifications, according to the Texas Department of Transportation:Detail 1Barriers include front and back holes that measure 1-3/8” in diameter. These holes are meant for side pins or bolt throughs, and they are spaced as follows:

1. Front Holes

The first front hole is spaced 4’-10” from the left side of the barrier; the next three holes are then spaced in even intervals of 6’-9”.

1. Back Holes

The first back hole is spaced 4’-3” from the left side of the barrier; the next three holes are then spaced in even intervals of 6’-9”.Detail 2Detail two shows placement on Asphalt Concrete Pavement or treaded pace material. A cross pin of 30” is required if traffic is on both sides of the barrier and there is less than 2’-0” of slide room. The pins will fit into a 1-3/8” diameter hole (typ., front and back). Front or traffic side pin is required with this pinned placement.30” Pin DetailPins should be made of ASTM A36 steel and measure 30” long and 1-1/4” in diameter. A steel washer should be welded to the pin at a 5 degree angle so that the washer is flush to the barrier surface.Detail 3Detail three shows placement on a bridge deck or CRCP. Cross pins of 21” are required if traffic is on both sides of the barrier and there is less than 2’-0” of slide room. Cross pins are recommended but not required if there is less than 2’-0” on the bridge deck. The pins will fit into a 1-3/8” diameter hole (typ., front and back). Front or traffic side pin is required with this pinned placement.21” Pin DetailPins should be made of ASTM A36 steel and measure 20-1/2” long and 1-1/4” in diameter. A steel washer should be welded to the pin at a 5-degree angle so that the washer is flush to the barrier surface.Core Drilling an Existing BarrierCore drilling an existing concrete barrier is permitted. Holes should be drilled with coring or masonry drilling type equipment. Percussion drilling should not be used. A special drill but will likely be required. Spalls in the concrete exceeding ½” should be patched.Precast Concrete Traffic Barrier Bolt Through Placement Over Longitudinal Expansion JointThe “bolt through” method of pinning precast barriers on a bridge deck is primarily used in a permanent location that requires limited barrier deflection.This blog post is an interpretation of specifications by the Texas Department of Transportation (TxDOT). Please consult with TxDOT's most recent requirements for definitive information.

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Eiffel Trading’s online marketplace boasts a wide variety of new and used precast barrier wall options, including various DOT specs, single slope barrier, low profile barrier, f-shape barrier, and much more. Furthermore, our marine equipment inventory ranges from sectional barges, to tug boats, and everything in between.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

The Michigan Department of Transportation outlines specifications regarding the proper dimensions for temporary concrete barriers with limited deflection (Type L), including general notes, plan view details, elevation details, and more.The difference between Type J1/J2 and Type L barriers is that J1 and J2 must be used together as a pair (since they are not symmetrical), but Type L can stand alone (since it is symmetrical). The difference between Type S and Type L barriers is that Type L is nearly twice as large, with additional features to accommodate the added size.

Michigan Temporary Concrete Barrier General Notes

The Michigan Department of Transportation’s general instructions are as follows:

1. Do not lift or move the TCB sections by use of the connecting loop bars D1, D2, D3 or D4. Do not apply excessive force to these connecting loop bars.
2. Concrete clear cover for reinforcing bars must be 1-1/2” (min.) except where otherwise specified.
3. Lifting slots should be constructed as specified to facilitate the drainage of water after installation on the roadway.

Michigan Temporary Concrete Barrier Specifications

Michigan barriers should conform to the following specifications, according to the Michigan Department of Transportation:Plan View, Type LType L temporary concrete barriers measure 20’-0” long and 1’-10-1/2” wide. They include holes for stakes, anchor bolts or rods (to secure the barrier to the ground). These holes are 2” in diameter (typ.) and are spaced symmetrically along the barrier in pairs (for every hole on the left side, there is an identical hole on the right side). There are five pairs of holes total, or ten total holes.The first pair of holes is set 2’-0” from the left edge of the barrier; the second pair of holes is set 4’-0” away from the first set of holes; the third set of holes is set 4’-0” away from the second set of holes; this spacing continues at even intervals for the fourth and fifth set of holes. The final (fifth) set of holes is spaced 2’-0” from the right side of the barrier, ensuring that the barrier is symmetrical.Barriers include A1 Bar, A2 Bars (in pairs), and B1 Bars. They include a loop bar on both sides of the barrier, which are symmetrical in nature.Elevation View, Type LType L temporary concrete barriers include 4” diameter lifting holes with an 11 gauge steel round mechanical tubing sleeve. (Lifting holes are optional). Barriers include two lifting slots, which are each 1’-0” long and 3” deep. The lifting slots are spaced 2’-0” apart from each other and are centered on the barrier. Additional lifting slots may be installed at the Contractor’s opinion, provided the additional slots do not interfere with anchor blockouts or steel reinforcement in the temporary concrete barrier section.There are anchor blockouts on both sides of the barrier.Barriers include A1 bars, A2 bars, D1 bars, D2 bars, D3 bars and D4 bars.On the right side of the barrier, the bars protrude from the edge of the barrier and are spaced as follows: D1 bar is spaced 6” from the top of the barrier; D2 bar is spaced 3” below D1 bar; D3 bar is spaced 1’-5” below D2 bar.On the left side of the barrier, the bars protrude from the edge of the barrier and are spaced as follows: D3 bar is spaced 7-1/2” from the top of the barrier; D2 bar is spaced 1’-5” below D3 bar; D1 bar is spaced 3” below D2 bar.End View, Type LType L temporary concrete barriers measure 1’-10-1/2” wide at the bottom, 8” wide at the top, and stand 2’-8” tall. They are symmetrical in nature and include a 7” v-notch that is centered on the barrier (optional). Barriers include an optional 4” diameter lifting hole, which is set 10” from the groundline. Barriers include blockouts for stakes, anchor bolts or rods to secure the barrier to the roadway. Loop assemblies (typ.) are centered on the barrier. The bottom slope is 7” tall. The upper slope is 1’-10” tall.Section A-A, Type LType L temporary concrete barriers have B1 bars running down their lengths, which are installed in pairs (for every bar on the left side of the barrier, there is an identical bar on the right side of the barrier). This excludes the bar at the very top of the barrier, which stands alone. B1 bars are spaced as follows: the first pair are spaced 6-1/2” over the groundline; the second pair are spaced 8” over the first pair; the third pair are spaced 8” over the second pair; the final top bar is spaced 6-5/8” over the third pair.There is a minimum 1-3/4” clearance between the A1 bar and the outer edge of the barrier, and a 2” clearance for A2 bars.This blog post is an interpretation of specifications by the Michigan Department of Transportation (MDOT). Please consult with MDOT' most recent requirements for definitive information.

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Eiffel Trading’s online marketplace exists to help contractor sell unneeded assets, and save money on procurement at the same time. Our temporary precast barrier wall inventory ranges from various DOT spec barriers, to f-shape barrier, to jersey barrier, and everything in between. Additionally, our construction material inventory also includes used HDPE pipe, used wide flange beams, used access trestle, and much more.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.

The State of Connecticut Department of Transportation outlines specifications regarding the proper dimensions of concrete barrier walls, including end view dimensions, connection rod dimensions, washer details and proper flare rates.

Connecticut Temporary Precast Concrete Barrier Curb

Each precast concrete barrier panel should be 20’-0” (610 mm) long and include:

• 1-1/2” (38 mm) covers
• 3’-0” (914 mm) drainage opening
• One connection loop bar “A” (TYP.)
• 5” (127 mm) between connection loop bar “A” and the top of the barrier
• One connection loop bar “B” (TYP.)
• 7” (178 mm) between connection loop bar “B” and the bottom of the barrier
• A lifting key
• A connection rod (see details below)
• 1/2” (13 mm) chamfer TYP.
• 2” (51 mm) cover on each end
• Three interior horizontal rods placed at even vertical intervals

Connecticut Temporary Precast Concrete Barrier Curb End View Specifications

Proper measurements for a precast concrete barrier curb, when looking at the barrier from its end, are as follows:

• A width of 24” (610 mm) at the bottom
• A width of 6” (152 mm) at the top
• A height of 32” (813 mm)
• A 2” (51 mm) cover at the top unless otherwise noted
• A 1-1/2” (38 mm) cover at the bottom
• A break point 10” above the bottom of the panel

Connecticut Temporary Precast Concrete Barrier Curb Connection Rod Specifications

Connection rods should include:

• Two heavy hex nuts at the top
• One heavy hex nut at the bottom
• One steel flat washer at the top
• One flat steel washer at the bottom (see washer details below)
• A rod that is 1” (25 mm) in diameter, galvanized, and 30” (762 mm) long
• A thread connection rod that’s a minimum of 4” (102 mm) TYP.
• All galvanized materials

Connecticut Temporary Precast Concrete Barrier Curb Washer Details

Washers should be:

• 1-3/16” (30 mm) in inner diameter
• 2-3/4” (70 mm) in outer diameter

Connecticut Temporary Precast Concrete Barrier Curb Flare Rates

Connecticut Temporary Precast Concrete Barrier Curb General Notes

Alternate designs for lifting keys, holes or other handling devices can be submitted to the engineer for approval. Expected permanent dynamic deflection is 3’ – 6” (1,148 mm) based on TL-3 crash tests with 240’ (73,152 mm) of TPCBC.This blog post is an interpretation of specifications by the Connecticut Department of Transportation (CTDOT). Please consult with CTDOT's most recent requirements for definitive information.

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Eiffel Trading’s temporary precast barrier wall inventory ranges from various listings of used single slope barrier, to used f-shape barrier, to DOT spec barrier, and everything in between. Furthermore, our concrete equipment inventory includes concrete formwork, concrete buckets, overhang stripping buggies, and much more.All of our listings are constantly being updated, but if you don’t see what you’re looking for, create a wanted listing for free.Ready to sell your used heavy equipment or construction material? List your products today for free on Eiffel Trading’s online marketplace.If you have any questions or would like additional information, please call us at 1-800-541-7998 or email sales@eiffeltrading.com.