Tips & Advice Posts

The Texas Department of Transportation outlines specifications regarding the dimensions of single slope concrete barriers (precast, X-bolt connection, restrained, MASH TL-4), including elevation view notes, plan view details, section details, and more.

Texas Single Slope Concrete Barrier (Precast) X-Bolt Connection, Restrained, Mash TL-4 Specifications

Elevation ViewBarriers measure 30’-0” long and include a 1” end cover (typ.) on both ends. Barriers also include two leave-out blocks on each side (for a total of four blocks per panel). Within the barrier is a WWR cage (A), WWR cage B, U1 (#4) bars, and DB (#8) bars.The WWR cage (A) includes 21 bars spaced 1’-2” apart for a total of 24’-6” of cage length. The WWR cage (B) also includes 21 bars spaced 1’-2” apart for a total of 24’-6” of cage length.Barriers include an expansion joint that measures 12” (minimum), and are set over a bridge slab or continuously reinforced concrete pavement (CRCP) that is at least 7” thick.Plan ViewBarrier plan views show an X-bolt connection made of PVC pipe that is 1-1/2” in circumference (Sch 40). The bolts are angled at 70 degrees, and the adjacent precast barrier segments are connected at their symmetrical center with a joint connection.View A-ABarriers stand 3’-6” tall and measure 8” wide at the top and 24” wide at the bottom. They include a ¾” chamfer (typ.) on all corners. The barrier slope is 8” wide (on each side). Barriers are symmetrical down the center line in dimensions, though their interior reinforcing bars are not symmetrical. Barriers are set atop bridge slabs or CRCP that’s at least 7” thick. Beneath this slab, it’s permissible to have a slab edge or breakback edge for phased construction. There is a minimum distance of 1-1/2” (typ). between all interior reinforcing bars and the outside edge of the barrier.It should be noted that threaded rods with nuts and washers for X-bolt connections are not included in view A-A for clarity.Top and Bottom Threaded Rod Assembly DetailsTop threaded rods measure 2’-8” long and are 7/8” in diameter. They are fully threaded rods (ASTM A193 Gr B7 or F1554 Gr 105). Top threaded rods include a PL washer that is ½” x 4” x 4” (ASTM A361) with a 1” diameter hole in the center. Washers are 7/8” hardened steel (ASTM F436).Bottom threaded rods measure 3’-6” long and are 7/8” in diameter. They are fully threaded rods (ASTM A193 Gr B7 or F1554 Gr 105). Bottom threaded rods include a PL washer that is ½” x 4” x 4” (ASTM A361) with a 1” diameter hole in the center. Washers are 7/8” hardened steel (ASTM F436).Installation of threaded rods must not extend beyond the face of the barrier.Leave Out Block DetailsView B-B:View B-B shows a 1-1/2” PVC sleeve (Sch 40) that is set to the left of the leave-out block. The leave-out block measures 1’-3” long and 5-3/8” tall. The PVC sleeve is centered vertically next to the leave-out block.Top View:A top view shows that the PVC sleeve is set on the opposite of the face side of the barrier.X-Bolt Connection with Forming and Leave-Out Block Placement DetailsThe leave-out block on the left side (the left barrier segment) is set 11-1/8” from the joint connection. The leave-out block on the right side (the right barrier segment) is set 1’-3-7/8” from the joint connection. The left-hand leave-out blocks are spaced 1’-5” from the ground line, and the right-hand leave-out blocks are spaced 2’-2” from the ground line.Bar DetailsBars BD (#8) measure 1’-5-1/2” long.Bars U1 (#4) are U-shaped bars that measure 3’-6” long and 11-3/4” wide (from open end to open end).Bars U2 (#4) are U-shaped bars that measure 3’-6” long and 8-1/4” wide (from open end to open end).Welded Wire WWR DetailsCage A measures 5’-1/2” wide at the top and 1’-8-1/4” wide at the bottom. It stands 3’-3” tall.Cage B measure 5-1/4” wide at the top and 7” wide at the bottom. It stands 1’-7” tall.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 online marketplace allows contractors to buy and sell materials and equipment, including various types of used precast barrier wall. Our barrier wall inventory ranges from DOT spec, to single slope, to low profile, and everything in between. Furthermore, our foundation equipment inventory includes pile drivers, 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.

Plate girder formwork systems are a type of concrete formwork produced by top formwork manufacturers like EFCO. Concrete formwork is a mold into which wet concrete is filled, after which the concrete dries and creates a desired shape and size for the purposes of a construction project. Plate girder formwork systems are steel molds that take the shape of plate girders. They are suited to applications in which plate girders are employed and extra reinforcement/strength from concrete is needed as opposed to what traditional I-beams can offer. They are ideal for the creation of large spans of plate girder walls as well as large spans of plate girder sections of bridges. They act as supporting structures however they are used.

Plate Girder Formwork Systems Applications

Plate girder formwork systems can be used in the following areas of construction, among others:

• Bridge construction
• Railway bridge construction
• Stadium construction
• High-rise construction
• Power plant construction
• Oil and gas platform construction
• Load testing
• Other long span applications

Benefits of Plate Girder Formwork Systems

As with all formwork, plate girder forms create perfect concrete modules and make precision easy for workers. Plate girder forms make highly supportive and reliable structures. They are engineered for setting as well as flying in sections of substantial lengths, and they are self-spanning. They come as modular panels, which can easily be conjoined to make forms of necessary spans, tailored to the needs of particular projects. Their modules can be connected both length-wise and width-wise. They are sold in various sizes ranging from around 2'x4' to 10'x10'. They typically have entirely steel face sheets, which offers a consistency to their finish. Their steel ribs act as web stiffeners and beams, transferring pressures from wet concrete away from their face plates to their bottom flanges and panel tops. This ensures a high-quality pour and setting for concrete as well as guaranteed integrity of all steel parts of the formwork.Ultra-strong plate girder formwork systems specifically for bridge construction applications exist to help offer adequate strength and safety when it’s needed most. These systems come with extra spanning strength and extra pour pressure resistance, among additional perks. Overall, they are a great choice for the heaviest duty jobs. EFCO’s “Super Plate Girder” forms belong to this category of plate girder formwork systems and are a popular choice.

Buying Plate Girder Formwork Systems

You can buy plate girder formwork systems both used and new, since forms can be used after a project’s completion. The price for used forms is usually around $15 to $25 per square foot or around $50,000 to $80,000 total for the needs of an average project. New plate girder formwork systems are a little more expensive, often starting at around $30 per square foot. Plate girder formwork systems are an excellent investment because they retain their value after use (and several uses at that). They’re built of steel materials that are intended to last for the long haul. Selling them after you no longer need them can definitely be a lucrative financial decision.

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Eiffel Trading’s online marketplace allows heavy civil contractors to buy and sell new and used material and equipment. Our concrete equipment inventory includes concrete formwork, concrete buckets, and more. Furthermore, our material inventory ranges from HDPE pipe, to precast barrier wall, to sheet pile, 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 Type 1 single slope concrete barrier joint connections.

Texas Single Slope Concrete Barrier Type 1 Pinned Placement General Notes

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

1. Concrete strength should be Class H with a minimum compressive strength of 3,600 psi.
2. Where used, rebar reinforcement should be Grade 60 and conform to ASTM A615.
3. Precast barrier length should be 30 feet unless other specified.
4. All precast barrier edges should have a ¾” chamfer or a tooled radius.
5. All concrete, reinforcement, joint connection systems, grout, etc. as shown are considered as part of the barrier payment.
6. Conduit trough when required should be shown elsewhere on the plans, or as directed by the Engineer.
7. Regardless of the method of handling, barrier lifting points should be approximately 7-1/2 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 (where required) 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.
9. All steel assemblies should be galvanized after fabrication in accordance with Item 445, “Galvanizing.”

Texas Single Slope Concrete Barrier (Type 1) Proprietary Joint Connections

Two proprietary joint connections are acceptable as alternates to the Type X connection.These joint connection types are:1) J-J Hooks by Easi-Set Industries]2) Quick-Bolt by Bexar ConcreteIf one of these connection systems are exclusively specified in the plans, prior approval for sole source use must be obtained. Details of the connection components and barrier reinforcement for these systems will be shown on the manufacturer’s shop drawings furnished to the Engineer.

Texas Single Slope Concrete Barrier (Type 1) Joint Connections Type Q

One of the three joint connection types is called Type Q. The details for this joint connection type are as follows, as stated by the Texas Department of Transportation:End ViewThe end view describes the “Quick-Bolt” pocket locations on a barrier measuring 42” tall x 24” wide (bottom) x 8” wide (top). There are two pockets, which are spaced 9-1/2” apart from their centers, and are stacked vertically on top of each other. The bottom pocket is spaced 1’-1” from the ground line.Elevation View for Joint Connection “Quick-Bolt” When viewed at an elevation view, the bolt retraction cavity should measure 2-1/2” in diameter and include a PVC sleeve that is 12” long. There are also two 7/8” diameter x 25” long rolled threaded bolts with a plate washer and nut on each end.

Texas Single Slope Concrete Barrier (Type 1) Joint Connections Type R

The second of the three joint connection types is called Type R. The details for this joint connection type are as follows, as stated by the Texas Department of Transportation:Section A-A Type R Rebar GridWhen viewed from Section A-A, a rebar grid can be seen inserted vertically down into the barrier panel. The grid is 3” wide and 24” tall.Top View Joint ConnectionWhen viewed from the top, there is a slot for a rebar grid that extends inward 10-1/2” from the left side of the barrier. This slot measures 3” wide.(#4) V2 BarsThere are six two piece bars per barrier segment. The bars of the V2 bar do not connect, and are symmetrical down the middle. They measure 33-1/2” in length and include a notched end that is 3-1/4” long.Welded Rebar GridThe welded rebar grid includes three #8 bars and two #6 bars. The grid is 18” long and 17-1/2” wide. The bars are spaced 7-3/4” apart.

Texas Single Slope Concrete Barrier (Type 1) J-J Hook Joint Connections

The third of the three joint connection types is the J-J hook. The details for this joint connection type are as follows, as stated by the Texas Department of Transportation:View from Above J-J Hook ConnectionWhen viewed from above, it can be seen that the J-J hooks are enclosed by a connector plate that measures 2” x 2” x 3/16”. The hooks are spaced 10-7/16” from the outer edge of the right side of the barrier, and 11” from the outer edge of the left side of the barrier.End ViewAn end view shows that for a J-J hook connection, four #4 stirrup bars are required. The bars measure 12” tall.

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Did you know that purchasing used barrier wall could save you tens of thousands on your next project? We are here to help! Check out our selection of used barrier wall, ranging from single slope barrier, to DOT spec barrier, to low profile barrier, to f-shape barrier, and every type 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 material notes, construction notes and general notes for the use of single slope concrete barrier (precast, X-bolt connection restrained MASH TL-4) in the state of Texas.

Texas Single Slope Concrete Barrier (Precast) X-Bolt Connection Restrained Mash TL-4 General Notes

According to the Texas Department of Transportation, this barrier system has been successfully evaluated by full-scale crash tests to meet MASH TL-4 criteria. This barrier system had approximately seven inches of dynamic deflection and 1.5 inches of permanent deflection, as it contains and redirects the TL-4 (single-unit truck) errant vehicle.The average weight of one 30 foot precast barrier is 19,960 pounds. The average weight of one precast barrier is 665 plf.Cover dimensions stated in the Texas Department of Transportation’s specifications are clear dimensions unless otherwise noted. Reinforcing bar dimensions shown on the plans are out-to-out of the bar.

Texas Single Slope Concrete Barrier (Precast) X-Bolt Connection Restrained Mash TL-4 Construction Notes

According to the Texas Department of Transportation, lifting devices (such as lugs, loops, etc.) should be provided at the Contractor’s or Engineer’s direction. Locate lifting devices in the rail so as not to exceed the tensile strength of the concrete during lifting. Galvanize all permanent steel lifting components.All exposed corners should be chamfered.When the barrier is removed, bars BD (#8) should also be removed. Cut bars and grind them flush to the finished bridge slab or CRCP unless directed otherwise by the Engineer. Test adhesive anchors in accordance with Item 450.3.3, “Tests.” Three anchors should be tested per every 100 anchors that are installed. Perform corrective measure to provide adequate capacity if any of the tests do not meet the required test load. Damage from testing should be repaired as directed.

Texas Single Slope Concrete Barrier (Precast) X-Bolt Connection Restrained Mash TL-4 Material Notes

According to the Texas Department of Transportation, all metal components of the barrier system should be galvanized.Provide Class “S” concrete (f’c = 4,000 psi) in general, but provide Class “S” (HPC) if it’s required elsewhere.All reinforcing steel and WWR should be galvanized if required or shown elsewhere. Provide stainless steel in accordance with Item 440.2.10, for BD (#8) bars when the bar is to remain embedded in the finished bridge slab, or if the bar is installed within continuously reinforced concrete pavement (CRCP).Provide Grade 60 reinforcing steel.Provide deformed welded wire reinforcements (WWR) (ASTM A1064).Provided welded wire reinforcements (WWR) laps, where required, which should be either uncoated or galvanized ~ D22.2 = 1’-7”.

Texas Single Slope Concrete Barrier (Precast) X-Bolt Connection Restrained Mash TL-4 DB (#8) Anchor Bar Notes

The Texas Department of Transportation instructs that DB (#8) anchor bars are embedded plumb with a Type III, Class C, D, E, or F anchor adhesive. The minimum adhesive anchor embedment depth is 5-1/4”. The anchor adhesive that’s chosen must be able to achieve a basic bond strength in tension, NBA, of 26 kips. Submit signed and sealed calculations or the manufacturer’s published literature showing the proposed adhesive anchor’s ability to develop this load to the Engineer for approval prior to use. Anchor installation, including the hole side, drilling and clean out, must be in accordance with Item 450, “Railing.”DB (#8) anchor bar nearest to a slab expansion joint, construction joint or the end of the structure may be shifted up to 12” longitudinally along the center of the barrier in order to satisfy the minimum offset dimension.Provide stainless steel for BD (#8) when the bar is to remain embedded in the finished bridge slab or CRCP.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 heavy civil contractors to buy and sell materials and equipment, including barrier wall, sheet pile, concrete formwork, and much more. Our barrier wall inventory includes many types, including DOT spec barriers, single slope barrier, f-shape barrier, low profile barrier, and 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 single slope concrete barriers, including general notes, plan view details, pipe details, and more.

Texas Single Slope Concrete Barrier Type 1 General Notes

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

1. Concrete strength should be Class H with a minimum compressive strength of 3,600 psi.
2. Where used, rebar reinforcement should be Grade 60 and conform to ASTM A615.
3. Precast barrier length should be 30 feet unless other specified.
4. All precast barrier edges should have a ¾” chamfer or a tooled radius.
5. All concrete, reinforcement, joint connection systems, grout, etc. as shown are considered as part of the barrier payment.
6. Conduit trough when required should be shown elsewhere on the plans, or as directed by the Engineer.
7. Regardless of the method of handling, barrier lifting points should be approximately 7-1/2 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 (where required) 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.
9. All steel assemblies should be galvanized after fabrication in accordance with Item 445, “Galvanizing.”

Texas Single Slope Concrete Barrier (Type 1) Details

Barriers should conform to the following specifications, according to the Texas Department of Transportation.Reinforcements for Precast Single Slope Concrete Barrier (Type 1)Barriers measure 30’-0” (plus or minus 1”) long. Each barrier includes #4 V1 Bars and #5 R Bars. There is a maximum spacing of 12” between the #4 V1 Bars. The first bar space may be decreased to accommodate side leave-outs. There is a distance of 5’-0” (typ.) at each end of the precast SSCB with Type X joint.Barriers also include 2” diameter lifting pipe holes which can fit steel pipe or Sch. 40 PVC. as mentioned in note 7.In addition to the reinforcing bars, barriers are required to include two drainage slots that measure 3” long x 3” deep, beginning 6’-0” from each end of the 30’-0” barrier segment.End View for Precast Single Slope Concrete 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 8” apart. The distance from the top of the barrier to the center of the upper hole is 1’-5”, and the distance from the bottom of the barrier to the center of the bottom hole is 1’-5”.Barriers measure 8” wide at the top and 2’-0” wide at the bottom.Deformed Bar Anchor Details for Precast Single Slope Concrete Barrier (Type 1)Two bars are required per assembly, and eight are required per joint. Bars are #5 Reinforcing Grade 60 steel that measure 3’-8” in length. The long arm of the bar measures 3’-3” in length and the short “bent” arm of the bar measures 6”. The arm bends at a 70 degree angle.Upper Connection Pipe Details for Precast Single Slope Concrete Barrier (Type 1)One steel pipe is required per assembly, and two pipes are required per joint. Pipes include a connection plate on one end. They measure 1’-3-1/2” long and are made of 1-1/2” standard pipe. The angle on the angled side of the pipe is 70 degrees.Lower Connection Pipe Details for Precast Single Slope Concrete Barrier (Type 1)One steel pipe is required per assembly, and two pipes are required per joint. Pipes include a connection plate on one end. They measure 1’-7-1/2” long and are made of 1-1/2” standard pipe. The angled side of the pipe is 70 degrees.(#4) V1 Bar for Precast Single Slope Concrete Barrier (Type 1)V1 bars above the drainage slots may be bent to accommodate 1-1/2” clearcover as directed by the Engineer.Section A-A for Precast Single Slope Concrete Barrier (Type 1)Section A-A shows the steel placement that is required at each drainage slot. There is a 1-1/2” clear cover at the bottom of the barrier, plus a 3” tall drainage slot. The first (#4) V1 bar sits 4-1/2” from the groundline. V1 bars may be cut or bent at drain slots.Single Slope Concrete Traffic BarrierPrecast SSCB may be connected to cast-in-place SSCB. The joint connection types may be used in the cast-in-place barrier to match the precast barrier connection.There is an optional conduit trough at the base of the barrier which measures 6” wide and 3” tall (see note 6). The top of the barrier measures 8” wide, the bottom of the barrier measures 24” wide, and the barrier stands 42” tall.Joint Connection Type X for Precast Single Slope Concrete Barrier (Type 1)Type X Joint installation includes one upper connection and one lower connection. Each connection includes a connection plate (typ.), plus two #5 deformed bar anchors (typ.), and a threaded rod with two plate washers and two nuts within the connection pipe (typ.). The upper connection hardware should not extend beyond the face of the barrier.Connection Plate Details for Precast Single Slope Concrete Barrier (Type 1)One plate is required per assembly. Four are required per joint. All steel fittings for joint Type X should be galvanized after fabrication in accordance with Item 445.Plates measure 4” x 4” and include a 1-5/8” diameter hole in the center. A 1-1/2” standard steel connection pipe is inserted and welded to the plate.Connection Bolt or Threaded Rod Details for Precast Single Slope Concrete Barrier (Type 1)Two threaded rods are required per joint. Rods measure 3’-6” long and are 7/8” in diameter (A325). 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.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 precast barrier inventory ranges from various DOT specs, to single slope, to low profile barrier, and everything in between. Furthermore, our construction material inventory also ranges to include used crane mats, used HDPE pipe, 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.

Column formwork is a type of concrete formwork. Concrete formwork is a mold made of steel, aluminum, timber, plastic, or other materials in which wet concrete is poured to achieve a desired shape and size for construction. Once the concrete sets, formwork is often removed, although permanent formwork that remains a part of construction exists as well. Column formwork is a vertical mold in the shape of a column, as its name implies. Column formwork may either be box-shaped or round.Column formwork is shaped and sized to the needs of a project. In order to help facilitate quality control during the pouring stage of using column formwork, clamps, which are horizontal and made of either steel or timber are often used in conjunction with column molds. Column formwork’s head is frequently employed to support beam formwork, or column formwork is cast to the bottom side of beams. The use of column formwork in conjunction with beam formwork allows for quick and precise construction.Two of the major benefits of using column formwork include that it is quick and simple to assemble and that it reduces the amount of labor and equipment needed to successfully produce uniform and strong vertical concrete shapes of desired dimensions.

Projects Involving Column Formwork

Column formwork is used in corporate building construction, retail building construction, residential building construction, industrial construction, bridge construction, power plant construction, infrastructure construction, and sewage treatment plant construction, to name a few areas where it’s applicable. Most construction projects that require the creation of vertical concrete columns (square or round) benefit from the use of column formwork, thanks to its ability to help create clean, precise, and strong concrete columns.Once the concrete sets in column formwork, it is necessary that it is thoroughly inspected to ensure it meets the necessary standards of the project in terms of factors such as appearance and strength. As concrete is being poured, column formwork is often bolstered with the help of falsework. Falsework includes poles or other stabilizing elements that keep the column formwork in place until the concrete dries.

Price of Column Formwork

Column formwork can be purchased either new or used. Average prices for new column formwork range between around $60 to $150 per square meter of materials. These prices apply to plastic, steel, and aluminum formwork. Prices are fairly consistent regardless of the materials used. At times, timber formwork can be a little less expensive, but it’s also less likely to retain its value and ability to be re-used and/or sold after use. In terms of resale, column formwork retains its value as long as it’s in good condition. Once temporary column formwork is no longer needed for a particular project, it can be re-used for another project or sold to buyers who are looking to cut costs and purchase formwork used. Sometimes column formwork is sold with falsework, access equipment such as ladders, and guard rails. This will increase the price, but these add-ons can be very helpful.Overall, column formwork can be an indispensable addition to construction projects that require the creation of columns. Whether column formwork is bought new or used, it often practically “pays for itself” in terms of the value it adds to a project and due to its resale value.

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The online marketplace at Eiffel Trading allows contractors to buy and sell heavy civil assets, including various types of construction equipment. Our equipment inventory ranges from used concrete formwork (including column forms!), to used sectional barges, to used pile drivers, 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.

Jump system formwork, also called jumpform, is a kind of climbing concrete formwork utilized in the construction of large, vertical concrete buildings and similar structures. Jumpform system formwork holds itself up using a concrete cast, and it does not necessitate the use of support from the building or other bolstering systems. Jumpform is a great solution for the construction of buildings that are made of sections that are the same shape and size. It is used in the building of shear walls, lift shafts, core walls, bridge pylons, and stair shafts, among other structures. It is very helpful in the construction of skyscrapers, for instance, because the bulk of their structure is a continuous wall. Using jump system formwork allows for quick and simplified builds.

How Jump System Formwork is Used

The process of using jump system formwork is often fairly straightforward. In a typical example of self-climbing jumpform, the jumpform installation process begins with a starter being cast at a construction site. Then, vertical re-bars are secured in place and shutters are aligned with the use of props. Next, concrete is poured into the first segment or module of the building. Temporary supports and shutters are then taken out and brackets are affixed to the concrete’s walls. Afterwards, a working platform/deck is installed on both the outside and the inside of the building. This process leads to re-bars being installed at a higher level than before. After which, shutters and props are able to be mounted using the working platform. Concrete is then poured into the second segment or module of the building.The process continues with props being taken out and the concrete being cured. A second set of brackets is then mounted, and hydraulic jacks are installed between lower and upper brackets. Next, extension posts as well as horizontal frames are affixed atop the hydraulic jacks, and shutters are affixed on top of runners that are held up by the frame. At which point, the next level of concrete is poured and cured. And then the hydraulic jacks move the framework structure up to the desired next level/module of construction. Upper brackets are used to latch the climbing formwork in place at the new level, and cylinders are shut to move the lower brackets up. Finally, re-bar is added to create an additional level for concrete to be poured, and the process is repeated until the building is the desired height.

Climbing Jumpform

In addition to self-climbing jumpform, normal climbing jumpform is also common. This type of jump system formwork uses a crane to lift jumpform up to higher modules. Guided climbing jumpform is another option. It utilizes a crane for moving formwork up, but the formwork is anchored to boost safety and efficiency.

Benefits of Jump System Formwork

• Speeds up construction of vertical structures
• Self-climbing formwork eliminates the need for crane use
• Facilitates a superior quality and precise concrete finish
• Simplifies planning of repetitive construction
• Ensures safety of workers, offering a sturdy platform for the job
• Using jump system formwork is a straightforward process for employees

Once a building is complete, and jump system formwork is no longer needed, it is detached from the building, and its materials can be used elsewhere to help build a new structure using the same process.

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Eiffel Trading’s online heavy civil marketplace boasts a wide range of materials and equipment, including all types of concrete formwork. Furthermore, our concrete equipment inventory also ranges to include concrete buckets, overhang stripping buggies, overhang brackets, 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 single slope concrete barriers with pinned placement, including general notes, section details, and more.

Texas Single Slope Concrete Barrier Type 1 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 deflection under normally expected passenger vehicle impacts. These details are intended for use in work zones, primarily on bridge decks, or pavement where temporary barrier must be placed less than 2 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 total of eight 1-3/8” ID holes formed or cord through the barrier. The center lines of the holes are shown in the whole location detail. If rebar is encountered, the entry point may be shifted to inches plus or minus longitudinally along the barrier. The eight holes are spaced along the length of the barrier as shown in detail one.
3. The drilling of the travel service 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 SSCB (2) to standard sheet 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 pens, 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. All steel pins should be galvanized after fabrication in accordance with Item 445.
9. The weight of barrier is approximately 700 pounds per foot.

Texas Single Slope Concrete Barrier Type 1 Pinned Placement Details

Barriers should conform to the following specifications, according to the Texas Department of Transportation.Detail 1Barriers measure 30” long and include 1-3/8” diameter holes, which are arranged in pairs along the barrier. Each hole in a pair is spaced 7” apart. The pairs of holes are spaced 6’-9” apart from each other, and 4’-3” away from either end of the barrier (when measured to the nearest hole).Detail 2Detail 2 depicts placement on asphalt concrete pavement (ACP) or treated base materials. In this instance, a 30” pin is required. Cross pins should be used if traffic is on both sides of the barrier and there is less than 2’-0” of slide room. The front or traffic side pin will be fit into a 1-3/8” diameter hole (typ. front and back).Detail 3Detail 3 depicts placement on a bridge deck or CRCP. In this instance, a 27” pin is required. Cross pins should be used if traffic is on both sides of the barrier and there is less than 2’-0” of slide room. The front or traffic side pin will be fit into a 1-3/8” diameter hole (typ. front and back). Cross pins are recommended but not required if there is less than 2’-0” on the bridge deck.Core DrillingCore drilling 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 bit to cut through existing reinforcing will likely be required. Spalls in the concrete exceeding ½” should be patched.Precast SSCB 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.There is a grout recess at the top of the barrier where the barrier bolt is placed, and a 3-1/2” x 3-1/2” recess (spread reinforcing steel at the top to clear recess by ½”).There is a 1” diameter bolt and hex nut running vertically through the center of the barrier into the deck below (the bolt length will vary). Barriers include a 1-1/2” ID Hole (formed or cored) and a void at the bottom for conduit where applicable (with a 2” radius).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 online marketplace hosts a wide variety of used and surplus temporary precast barrier wall types, including various DOT spec barriers, f-shape barrier, low profile barrier, single slope barrier, and much more. Additionally, our marine construction inventory ranges to include sectional barges, inland tug boats, and 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.

Concrete formwork is a mold or frame that holds wet concrete (poured into the formwork) until it dries and creates the desired structure that suits the purposes of a construction project. Concrete formwork can be temporary or permanent. When it is temporary, it is removed once the concrete sets. Temporary formwork is more common than permanent formwork. It can be re-used for other projects once it is no longer needed, which is of great benefit to the contractor. Because of this, temporary formwork can be resold after a project or reused on a later job. Temporary concrete formwork can be made of heavy-duty aluminum, steel, plastic, plywood, or timber. Permanent formwork, which remains in place and becomes a part of the construction after the concrete sets is often made of foam material.The process of using concrete formwork in construction is sometimes referred to as “shuttering.” A major benefit of using concrete formwork is that it aids in achieving a desired concrete shape with a great degree of precision. Use of formwork as opposed to other methods of setting concrete is quick and efficient.

Concrete Formwork Projects

Below are some of the types of projects in which concrete formwork is used:

• Building construction (residential, commercial, skyscrapers, airports, high rises, etc.)
• Bridge construction
• Highway construction
• Overpass construction
• Industrial and energy construction
• Viaduct construction
• Tunnel construction
• Wastewater treatment plant construction
• And more!

Formwork has been a vital component of architecture projects since its use in Ancient Rome to help construct monuments like the Pantheon and the Colosseum. Its longevity in construction is due to its usefulness and reliability.

Styles and Types of Formwork

Formwork comes in various shapes, sizes, and styles to suit the needs of individual projects. Column forms, box culvert forms, and bridge overhang brackets are all popular styles. In addition to coming in different styles, there are various types of formwork classified based on their materials as well as their uses. Below are some of the most popular types of formwork:

• Engineered formwork systems – These are prefabricated structures with metal frames (typically aluminum or steel). They are quick to install and use and easy to remove once concrete sets. Plus, they are durable, which means they can be re-used and re-purposed for several other projects.
• Timber formwork – This is a popular choice. Installation can take a bit longer than it does with steel or aluminum formwork, and timber is less durable so it can’t be re-used for a great number of projects without degrading to the point that it’s no longer viable.
• Permanent insulated formwork – This is the most common type of permanent formwork. As mentioned previously, it’s usually made of foam and remains in place once concrete sets. A benefit of using this kind of formwork is that it can improve the thermal conditions of a structure, i.e. keep a building better insulated from changes in outside temperature.
• Plastic formwork – These are modular and interlocking structures that can easily be built to size and desired shape and removed when the time comes. They are a good choice for mass housing projects that require low costs and simple concrete formwork systems.
• Stay-in-place formwork – Made of plastic and easily installed on site, this type of formwork is often used for column applications and pier construction. It’s a permanent type of formwork than can reinforce the strength of concrete structures.

The best type of formwork or style of formwork for a project will hinge upon its particular needs. Overall, concrete formwork is a smart addition to numerous kinds of construction projects and will remain a staple in the construction industry for the foreseeable future.Interested in learning more about concrete formwork? Read one of our most popular blogs, titled “How Long Should You Wait to Remove Concrete Formwork?”

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Eiffel Trading was created to give contractors a platform for buying and selling new, used, and surplus heavy civil materials and equipment. Our concrete equipment inventory ranges from concrete formwork, to bridge deck finishers, and everything in between. Furthermore, our material inventory includes used HDPE pipe, used crane mats, used barrier wall, 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 2 precast concrete traffic barrier (PCTB), including general notes, plan view details, elevation view details, and more.

Texas Low Profile Precast Concrete Barrier (Type 2) General Notes

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

1. Welded wire reinforcement (WWR) is not an option for Type 2 barriers.
2. Type 2 barriers should be used as an end treatment for the Type 1 barrier segments, when applicable.
3. The end treatment can be used without the anchor pins in locations that can accommodate approximately four feet of lateral displacement of the end treatment. The use of non-pinned end treatment does not affect the performance or the deflection of the low profile barrier system.
4. The anchor pins are all the same length and are to be driven flush with the top of the Type 2 barrier surface.
5. The bends in the H3 and H1 bars are slight, no formal bend is necessary.
6. The Type 2 low profile barrier wall segments must be lifted from the rear first, to prevent cracking of sloped sections.

Texas Low Profile Precast Concrete Barrier (Type 2) Specifications

Barriers should conform to the following specifications, according to the Texas Department of Transportation.Plan ViewType 2 barriers measure 20’-0” long, 26” wide on their widest end and 14” wide on their shortest end. The widest end of the barrier stretches for 5’-0” before it begins to taper. In this section, 30” away from the end of the barrier, there is a drain slot and a drain hole. Just before the barrier begins to taper, there are 2” nominal diameter lifting pipes, which are set 4’-0” from the barrier’s end.There are seven 1-3/4” diameter steel anchoring pipes running through the tapered section of the barrier, which are each spaced 24” apart.Elevation ViewThe barrier includes H1, H2 and H3 bars, as well as bars V1 to V16. Bars V1 to V14 run vertically through the barrier’s tapered end and are each spaced 12” apart from each other. On the left (non-tapered) side of the barrier, there is a drain slot and a series of horizontal reinforcement bars running through the barrier.Bar DimensionsBars V3 to V14 vary in size, as shown in the table below.V1 BarsEach barrier includes five V1 Bars. This rebar is a square shaped rebar with one unconnected, overlapping corner. The rebar measures 21” long and 13-1/2” wide. The overlapping ends measure 5” each.V2 BarsEach barrier includes 12 V2 Bars. This rebar is a U-shaped rebar with three sides, plus one open end. The bottom of the U measures 21” long, and each arm of the U measures 13-1/2” long. The open end of the rebar measures 12” across. The ends of each arm of the U is bent, and this bent section measures 4-1/2” and 10-1/4”.H2 BarsEach barrier includes four H2 Bars. This is a U-shaped bar. Each arm of the bar measures 41” long, the open end of the bar measures 22-1/2” wide, and there is a 6” diameter bending pin on both corners.Remaining V BarsThe remaining bars include the following dimensions:

• V12 = 13” x 4-3/4”
• V13 = 12-1/4” x 3-3/4”
• V14 = 11-1/2” x 2-3/4”
• V15 = 10-3/4”
• V16 = 10”
• H3 = 16’-4”
• H1 = 19’ – 8”

ASTM A36 Connection Bolts and Plate WasherNuts, hex nuts and washers should all be galvanized.Connection bolts measure 26” long. They are 1-1/4” in diameter and include a thread that is a minimum of 4” long. Hex nuts are Grade 5. The plate washer measures 5” x 10” x 3/8” and includes two holes, through which the connection bolts will be secured.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 has an extensive precast barrier wall inventory, including used low profile barrier wall, used single slope barrier wall, used f-shape barrier wall, and much more. Furthermore, our inventory ranges to include various equipment items, such as concrete formwork, pile drivers, and so on.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.