Example design vehicle loading diagram bcfs l165 gvw 149,700 kgs. Commercial motor vehicles are restricted in width to a limit of 2. Canadian highway design bridge code design examples asixth structural 30 jun 09 07. Live loads the chbdc design loads are the cl w truck and cl 625 ont truck figure 2. Hs 20 truck loading truck structural load avaliacao. Highway live loads on concrete pipe american concrete pipe. Pdf live load distribution on rigid frame concrete bridge. How to balance load on a dual axle trailer lewis, one reason i said approximately an inch is because i didnt know what youd be towing it with. To select the right load and inflation table for your commercial tires, locate your tire size, then match your tires sidewall markings to the table with the same sidewall markings. Since its introduction during the late 1960s the radialply truck tire has continuedto increase its market share over its predecessor, the biasply truck tire, figure 11. Clarification of gvw load rating for bridge structures. Manhole frame and cover load bearing definitions npca. Forest roads are often designed and constructed to accommodate highway legal log truck and low boy single trailer combinations five axles. Load rating for a structure typically involves complex calculations and judgement and then distilling the results down to a simple number a maximum gvw.
Aashto loading of either h20 or hs20 is based on an axle load of 32 kips. Bridge load evaluation manual transportation government of. The extra 500pound wheel load is not a large increase and will only affect those designs that did not have excess capacity. Load rating chart firebag river bridge regional municipality of wood buffalo created date. It supersedes the previous editions published in 2006 including three supplements published in 2010, 2011, and 20, 2000, 1988, 1978, 1974, 1966, 1952, 1938, 1929, and. This theoretical live load hl93, defined as the design truck, is an hs20 load or 16,000 lbs. The average pressure intensity caused by a wheel load is calculated by equation 2. Understanding the hs25 classification stormtank stormwater. The average pressure intensity caused by a wheel load is calculated by. As a result, castings that meet the aashto m306 hs20 rating meet or exceed this requirement. These guidelines apply to all bridges including bridge size culverts on. Comprehensive truck size and weight study volume 3. Reinforced concrete pipes in north america are often designed using the indirect design method, which uses bedding factors to relate inplace pipe performance to the performance obtained from threeedge bearing tests.
The hl93 live load consists of the design truck 32,000lb axle, identical to the hs20 truck of the standard specifications or a design tandem two 25,000lb axles spaced 4 ft apart. Influence lines of forces, support reactions and deflections. In order to provide a reasonable level of protection from civil law suits for interference to navigation, alberta transportation has developed a practice for assessing potential navigation impact at a site. The key performance indicator is the load at which the 0. Contact your closest ministry of transportation enforcement office for more information.
For a typical highway application, these composite bridges are. Standards loads such as hl93, cl 625, m 1600, cooper e90 and others are included in truck database. H20 and hs20 loading 8000 lbs 32,000 lbs h20 loading 8000 lbs 32,000 lbs hs20 loading. The clw truck and cl625 ont truck design axles are carried on dual wheels figure 1. Exceptions are made for specialized equipment such as snow removal equipment. Chbdc cl625 truck 28,000 axle load bearing bars parallel to tra. Download scientific diagram cl625ont truck loads, lane loads and design truck dimensions from publication. Canadian highway design bridge code design examples. The precast trench system is designed to resist the following minimum loads. Force effects from load configurations consisting of other types of. The figures below and in section 4 are based on vehicle tare. Both single truck and two truck load cases must be considered, and are. The cl 625 is the new truck loading from the canadian code. Early efforts to rationalize the load carrying performance of flexible conduits led.
These tests demonstrated for the first time that a flexible conduit and compacted earth embankment can combine to act as a composite structure. Clarification of gvw as applicable to bridge load rating gross vehicle weight gvw is the total weight of the vehicle including cargo. Tire tech information dual tires for light truck use. Settlement and consolidation will improve the soil structure surrounding the pipe, which also improves load carrying capacity. H20 and hs20 loading 8000 lbs 32,000 lbs h20 loading 8000 lbs 32,000 lbs hs20 loading 32,000 lbs 8002331510 dynamic load sample calculation wheel load wl 16,000 lbs 32,000 lb axle 2 dynamic force fd 1.
Comprehensive truck size and weight study volume 3 chapter 6. Truck configurations cs1, cs2, cs3, cl625 and cl800 figure 1. Design considers separate load cases for each of the cl625 ont axles, traveling along the trench length, and perpendicular to the trench length. For very long spans, the weight of the traffic is much less significant than the weight of the bridge span itself that is, the dead load. Design vehicles and turning radii national association of. Live load models for long span bridges unl digital commons. Axle weight distribution formulae to calculate distribution of weight on the front and rear axles of a truck, use these simple formulae. The cl 625 and bcl 625 highway vehicle design configurations are.
Schematic diagram of stress in unbonded tendon as a function of member curvature 14 2. Measured load capacity of buried reinforced concrete pipes. For fatigue loading purposes, axles 2 and 3 of the cl625ont truck shall be used. Grasspave2, gravelpave2, and slopetame2 can withstand 15,940 psi with. Gobeam continuous beam analysis for excel spreadsheet. The mfacs twoport cooling systems operate by forcing highhumidity cooled air through the loaded truck and the individual produce boxes. This is one of the factors included in the standard, in addition to dead load soil weight, surcharge loads, and all applicable loadsafety factors. The code designers had come up with more appropriate models but the americans couldnt let go of the hs20 truck. Cl625ont truck loads, lane loads and design truck dimensions.
It is not practical to load rate the bridge for each one of the real truck configurations. Dead load and superimposed dead load for sample design 15 2. Integrated process of transverse flexural design 22 2. In urban areas that are highly builtup, intersections may be designed to provide fully for passenger vehicles but require the larger vehicles to swing wide upon turning.
In the doctoral dissertation a live load model for long span structures was derived. Tonnes exceedsbridge capacity within bridge capacity. In determining the width of a motor vehicle, the mirrors will not be included if they do not extend more than 30 centimetres beyond the vehicle on either side. These guidelines cover all aspects of bridge engineering for local road bridge projects. On rural facilities, to accommodate truck traffic, one of the semitrailer combination trucks should be considered in design. The cl w truck and cl 625 ont truck design axles are carried on dual wheels figure 1. Designers use h20 or hs20 from aashto, or specific axle configurations, to express the extreme load effect created by heavy vehicles such as transports, buses and fire trucks. Supplement to chbdc s614 section 3 loads october 28 2016 5 bc moti. The hl93 design tandem wheel load is 12,500 pounds compared with the alternate military load of 12,000 pounds. If the tongue weight drops the hitch one inch on a one ton truck, youve probably got plenty of tongue weight. A model truck is used to represent each one of the truck configurationcategories. This information is required for determining equipment transport costs, transportation planning, road design, and transport operations. Dec 15, 2015 structural design truck loading highway trucks cl625, cl800 5 axles 225 kn maximum axle load extreme live loads haul trucks 6120 kn gvw cat 797b 2 axles 4100 kn maximum axle load e90 cooper railway loading 27.
The specification includes both a service load design method and a load factor design method, similar to the astm methods. Dec 06, 2018 in this short article, we explain the formulae for calculating axle weights, and take you through a simple example. Pdf mechanical analysis of cement concrete at the pavement. Canadian highway design bridge code design examples bridge. The mean value and standard deviation read directly from the graph.
H25 loading hs25 loading rainstore3 has been independently. Cl 625 truck loading road surface concrete free 30. For strength and serviceability, axle 4 of the cl625ont truck shall be used. Live loads the chbdc design loads are the clw truck and cl625 ont truck figure 2. Firebag river bridge on fort chipewyan winter road bf78345. The hl93 loading is the new loading in the aashto lrfd code. Bridge load rating rating truck models each one of the trucks produces unique forces and stresses in the bridge. The adequacy of a bridge to carry a permit truck load is in question. Design considers separate load cases for each of the cl 625 ont axles, traveling along the trench length, and perpendicular to the trench length. Structural design truck loading highway trucks cl625, cl800.
The live load analysis of the 2d rigid frame structure wa s carried out by projecting th e centreline of the cl625 ont design vehicle onto the deck of the structure truc k is centered over the. Vertical earth pressure design unit weight for soils is assumed to be. For example, a lt23585r16 load range e tire is rated to. Aashtos h20 and hs20 are live load ratings applied to the design of bridges or other suspended items e. The tire contact area for hs 2044 shall be assumed as a rectangle with a length in the direction of traffic of 10 inches, and. Questions about overweightoverdimensional permits and special vehicle configuration permits including transitional permits under the ontarioquebec harmonization agreement, should be addressed by telephone to. Truck tire types and road contact pressures by pedro yap the. Load rating chart firebag river bridge regional municipality of. Standards loads such as hl93, cl625, m 1600, cooper e90 and others are included in truck database.
Preface this is the eleventh edition of csa s6, canadian highway bridge design code. This is because the load capacity rating of a tire serving duty in a single application is greater than the exact same tire being used in a dual application. Maximum payload when loaded to the trailer headboard the diagrams below show the maximum payload for different length product when loaded to the trailer headboard based on typical 2 and 3 axle tractor units and trailers. Structural design railway loading 80k axle load 355 kn 2526 kn total 28.
It combines an hs20 truck with a simultaneous lane load. Live load pressures for the cancsas606 design truck, cl625, are also listed. Light truck tires that are intended to be used in dual applications have two max load ratings branded on the tires sidewall. Good, even airflow around the produce is the key to forced air cooling success. Clw and cl625ont live load models adapted from csa, 2006a 16 2. Bridge system with precast concrete doublet girder and. Development of a shear connection for a portable composite. To remove the steps in the girder shear diagram and obtain a more. Mechanical analysis of cement concrete at the pavement bends. This method, first used in 1967, introduced thrust beams and transverse rib stiffeners into the design of large span multiradii soilsteel structures. Michelin continually updates its product information to reflect changes in industry standards, so you can stay informed. Transport canada will no longer be required for most local road bridge projects. Fe analysis confirmed it displacement diagram from plaxis. The hl93 design truck wheel load is the same as the hs20 wheel load.