WALER SYSTEMS - Ohio Department of …...5. Cylinders shall be equipped with a solid piston head which permits maintenance of seals without detaching the piston head from the piston

3330 S. Sam Houston Pkwy ♦ Houston, Texas 77047 (713)943-0750 ♦ USA Toll Free 1-800-231-6662 ♦Fax (713)943-8483

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WALER SYSTEMS

DETAILED SPECIFICATIONS INSTALLATION

MANUFACTURE’S TABULATED DATA

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WALER SYSTEMS Detailed Specifications

Units specified herein shall be fully assembled, adjustable, personnel protective devices specifically designed and professionally engineered to provide excavation safety protection for workers. These units shall be in full compliance with all applicable Federal Occupational Safety and Health Administration (OSHA) Regulations. HYDRAULIC CYLINDER CROSS-BRACES 1. Cylinders shall be a minimum of 2" I.D. and shall have an allowable capacity of not less than 23,000 pounds

axial compression load with a 1.5 safety factor. 2. Cylinders shall be furnished with aluminum over-sleeves for protection of the piston rod through its complete

stroke. 3. Cylinders barrels shall be composed of 6061-T6 aluminum alloy drawn seamless. 4. Cylinders shall be fitted with a wiper guide assembly to thoroughly clean the smooth exterior of the piston

rod before entering the cylinder. 5. Cylinder pad (end of shoring device) shall be a minimum of 2 1/2" thick through its axis to insure sufficient

support of the cylinder barrel. 6. O-ring seals in the cylinder pad are to be located in the annular space between the cylinder barrel wall and

inside cylinder pad wall to reduce risk of O-ring distortion. 7. Cylinders shall be equipped with a solid piston head which permits maintenance of seals without detaching

the piston head from the piston rod. Piston rod shall be composed of 2024-T351 aluminum alloy for higher yield strength.

8. The piston head seal shall be a loaded O-ring design for optimum seal and prevention of low pressure leakage. Seal hardness shall be a minimum of 85 durometers.

9. Cylinder barrel shall be permanently date stamped by manufacturer. 10. Over-sleeve, cylinder barrel, cylinder pad, and socket pad shall be permanently stamped with manufacturer’s

name. WALER RAILS 1. Standard Waler Rail shall be no less than 6" in width and have an equivalent section modulus of 3.67 in.3 or

more. 2. Medium Duty Waler shall be no less than 7" in width and have an equivalent section modulus of 9.8 in3 or

more. 3. Heavy Duty Waler Rail shall be no less than 8" in width and have an equivalent section modulus of 14.50 in.3

or more. 4. Rails shall be permanently stamped with manufacturer’s name. GENERAL NOTES 1. Attachment of the cylinder pads to the vertical rails shall be a flush mounted design to insure even

distribution of load to the rails. 2. Each hydraulic cylinder shall have a variety of single unit extension systems available to increase the working

range of each hydraulic cylinder. 3. Cylinder should be no more than 9" center from each end of waler rail. 4. All quick coupling fittings, pins, handles and keepers shall be plated for maximum life. 5. Supplier shall furnish with each bid Manufacturers Tabulated Data certified by a registered Professional

Engineer, which clearly defines product capabilities.

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ACCESSORIES 1. Hydraulic Pumps

a. Hydraulic pumps shall be a minimum of 5 gallon fluid capacity, complete with calibrated gauge, hose, valves and fittings.

b. Pump gauge shall have a green color coded face plate indicating normal operating range of 750 - 1,500 psi.

c. Pump hose shall be a minimum of 12' in length with spring guards and a minimum working pressure of 5,000 psi.

2. Release Tools and Removal Hooks Manufacturer supplying goods must have available specially designed tools to facilitate above-

ground installation and removal of all units. 3. Hose Bridle Assemblies

a. Manufacturer supplying goods must have available specially designed hose bridle assemblies to allow expansion of all cylinders simultaneously using a single hydraulic pump.

b. Hose bridle assemblies shall have a minimum working pressure of 5,000 psi. c. Hose bridle shall be fitted with shut off valves for independent cylinder control, fluid release and

fluid recovery. 4. Videos Optional job safety video and maintenance and repair video shall be available as needed. EQUIVALENCIES 1. Refer to Speed Shore Corporation's technical data for specific models and accessories. 2. These specifications are intended to establish a standard of quality and performances. 3. Designs which meet or exceed these specifications shall be considered in compliance. PARTS AND SERVICE 1. Replacement parts must be available for shipment within five working days of Purchase Order. 2. Parts List will be furnished upon request. PRODUCT LIABILITY The manufacturer under these specifications shall be required to carry a minimum one million dollars ($1,000,000.00) product liability insurance policy with bid award being contingent upon proof of coverage. EXPERIENCE The manufacturer under these specifications shall be required to furnish documented proof of professional expertise and competence in excavation safety product experience and manufacturing for a minimum of five (5) years. We reserve the right to request from the apparent successful manufacturer a client list for the purpose of obtaining references on quality of products furnished and service history. DELIVERY Delivery of all equipment, features and accessories specified herein is to be made within sixty (45) days after receipt of Purchase Order. WARRANTY The successful bidder under these specifications shall furnish a minimum one (1) year warranty on all parts and labor. TRAINING The manufacturer under these specifications shall provide installation instructions, recommended uses and maintenance instructions to the solicitor upon delivery of the unit(s).

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WALER SYSTEMS WITH SPEED STRUTTM Detailed Specifications

Units specified herein shall be fully assembled, adjustable, personnel protective devices specifically designed and professionally engineered to provide excavation safety protection for workers. These units shall be in full compliance with all applicable Federal Occupational Safety and Health Administration (OSHA) Regulations. HYDRAULIC CYLINDER CROSS-BRACES (SPEED STRUT) 1. Cylinders shall be a minimum of 2" I.D. and shall have an allowable capacity of not less than 23,000 pounds axial compression load with a 1.5 safety factor. 2. Cylinders barrels shall be composed of 6061-T6 aluminum alloy drawn seamless. 3. Cylinders shall be fitted with a wiper guide assembly to thoroughly clean the smooth exterior of the piston rod

before entering the cylinder. 4. O-ring seals in the cylinder pad are to be located in the annular space between the cylinder barrel wall and inside cylinder pad wall to reduce risk of O-ring distortion. 5. Cylinders shall be equipped with a solid piston head which permits maintenance of seals without detaching the

piston head from the piston rod. Piston rod shall be composed of 2024-T351 aluminum alloy for higher yield strength.

6. The piston head seal shall be a loaded O-ring design for optimum seal and prevention of low pressure leakage. Seal hardness shall be a minimum of 85 durometers.

7. Telescoping cross members shall be equal to the Speed Shore "Speed Strut." Each cross brace shall fully enclose a hydraulic cylinder and return spring. Each cross brace shall consist of one (1) oversleeve with one (1) innersleeve per end of each waler.

8. Cross braces shall be designed to support end load capacities no less than 1100 pounds per square foot, when end panels (sheeting) are added.

9. Cross braces shall utilize a minimum of three (3) positive lock settings for adjusting the width of the device through its travel; this is to accommodate excavations of varying widths. Lock adjustments shall be designed to prevent inadvertent collapse.

10. Telescoping cross members shall be interchangeable to facilitate modification of the waler to any one of the listed models. Cross braces for the modification shall be available for purchase, individually.

11. Each cross brace shall be fitted with steel locking pin with a diameter no less than 1" fabricated from round stock 1144 or equal. Pins shall be permanently attached safety keepers.

12. Cylinder barrel shall be permanently date stamped by manufacturer. 13. Over-sleeve, cylinder barrel, cylinder pad, and socket pad shall be permanently stamped with manufacturer’s name. WALER RAILS 1. Heavy Duty Waler Rail shall be no less than 8" in width and have an equivalent section modules of 14.50 in. or more. 2. Medium Duty Waler Rail shall be no less than 7" in width and have an equivalent section modules of

9.80 in.3 or more. 3. Rails shall be permanently stamped with manufacturer’s name. END PANEL ASSEMBLY Optional accessories shall be available to add end panels on one or both ends of the waler. Options shall include full end panel coverage equal to Speed Shore's end panel which includes aluminum sheeting, without top and bottom cap. Additionally, end panel bracketing shall be available without sheeting to enable the purchaser to utilize alternate sheeting materials.

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GENERAL NOTES 1. Attachment of the Speed Struts to the waler rails shall be a flush mounted design to insure even distribution of

load to the rails. 2. All quick coupling fittings, pins, handles and keepers shall be plated for maximum life. 3. Supplier shall furnish with each bid Manufacturers Tabulated Data certified by a registered Professional

Engineer, which clearly defines product capabilities. ACCESSORIES 1. Hydraulic Pumps

a. Hydraulic pumps shall be a minimum of 5 gallon fluid capacity, complete with calibrated gauge, hose, valves and fittings.

b. Pump gauge shall have a green color coded face plate indicating normal operating range of 750 - 1,500 psi.

c. Pump hose shall be a minimum of 12' in length with zinc plated spring guards and a minimum working pressure of 5,000 psi.

d. Pump valves and fittings shall be solid brass or zinc plated for maximum life. 2. Release Tools and Removal Hooks

Manufacturer supplying goods must have available specially designed tools to facilitate above-ground installation and removal of all units.

3. Hose Bridle Assemblies

a. Manufacturer supplying goods must have available specially designed hose bridle assemblies to allow expansion of all cylinders, simultaneously, using a single hydraulic pump.

b. Hose bridle assemblies shall have a minimum working pressure of 5,000 psi. c. Hose bridle shall be fitted with shut off valves for independent cylinder control, fluid release and fluid

recovery. 4. Videos Job safety video and maintenance and repair video shall be available as needed. EQUIVALENCIES 1. Refer to Speed Shore Corporation's technical data for specific models and accessories. 2. These specifications are intended to establish a standard of quality and performances. 3. Designs which meet or exceed these specifications shall be considered in compliance. PARTS AND SERVICE 1. Replacement parts must be available for shipment within five working days of Purchase Order. 2. Parts List will be furnished upon request. PRODUCT LIABILITY The manufacturer under these specifications shall be required to carry a minimum one million dollars ($1,000,000.00) product liability insurance policy with bid award being contingent upon proof of coverage. EXPERIENCE The manufacturer under these specifications shall be required to furnish documented proof of professional expertise and competence in excavation safety product experience and manufacturing for a minimum of five (5) years. We reserve the right to request from the apparent successful manufacturer a client list for the purpose of obtaining references on quality of products furnished and service history.

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DELIVERY Delivery of all equipment, features and accessories specified herein is to be made within sixty (45) days after receipt of Purchase Order. WARRANTY The successful bidder under these specifications shall furnish a minimum one (1) year warranty on all parts and labor. TRAINING The manufacturer under these specifications shall provide installation instructions, recommended uses and maintenance instructions to the solicitor upon delivery of the unit(s).

3330 S. Sam Houston Parkway E. • Houston, Texas 77047 713.943.0750 • Fax 713.943.8483 • Toll Free 800.231.6662

WS Assem12312008 Page 1 of 4

WALER SYSTEMS INSTALLATION and REMOVAL PROCEDURES GENERAL NOTES Speed Shore Waler Systems are hydraulically applied shoring devices designed to be installed horizontally to support weaker soils that require sheeting. They are manufactured in compliance with the Federal Occupational Safety and Health Administration (OSHA) Standards. Waler Systems are designed to support a uniform lateral earth pressure over the full load zone area of each Waler. Lateral Earth Pressure being a function of the equivalent weight effect of the soil and the depth of excavation. The Walers are designed as simple span beams between the hydraulic cylinders which support the full load placed upon the system. Waler Systems are composed of two horizontal Walers, with 2” diameter or 3” diameter aluminum hydraulic cylinders and appropriate sheeting. Cylinders are manufactured from 6061-T6 alloy and have a safe working capacity of 23,000 pounds for 2” diameter cylinders and 42,000 pounds for 3” diameter cylinders. Normal working pressure in the cylinder is 750 to 1,000 psi. (8 foot and 12 foot long Walers require 2 cylinders per unit and 16 foot long Walers require 3 cylinders per unit). The maximum horizontal spacing of cylinders along one Waler is 126” on the 12’ long units.

Currently Speed Shore Waler Systems are manufactured in standard lengths of 8’, 12’, and 16’. Available widths are determined by the model cylinder utilized. Model numbers indicate the maximum operating width of the Waler. Waler Systems are available with three optional rail configurations to meet variable strength

requirements. Standard rail (Section Modules 3.67 cu. in.), medium duty (Section Modules 7.5 cu. in.) and heavy duty rail (Section Modules 14.5 cu. in.).

Refer to Manufacture’s Tabulated Data for approved sheeting. Walers installed along the same horizontal plane down the length of the excavation are placed end to end so that the end cylinders in adjoining Walers are approximately two feet apart. The designated Competent Person shall ensure that all excavation work is done in compliance with the requirements of the OSHA standard for excavations and manufacturer's tabulated data. They will inspect all components of the shoring system prior to use, as well as daily and when changes in jobsite conditions require. Any damaged, defective or inadequate components shall be repaired or replaced. A TRAINED COMPETENT PERSON SHALL: SUPERVISE ALL EXCAVATION OPERATIONS, ENSURE THAT ALL PERSONNEL ARE WORKING IN SAFE CONDITIONS, AND HAVE THOROUGH KNOWLEDGE OF THE APPROPIATE TABULATED DATA. THE COMPETENT PERSON SHALL HAVE THEAUTHORITY TO STOP WORK WHEN IT IS UNSAFE FOR WORKERS TO ENTER AN EXCAVATION. Manufacturer’s Tabulated Data Speed Shore's Tabulated Data complies with the O.S.H.A. standards as stated in the Code of Federal Regulations 29, Part 1926, Subpart P - Excavations, Section 1926.652(c)(2). This data shall only be used by the contractor's competent person in the selection of Speed Shore Waler Systems. The competent person shall be experienced and knowledgeable in trenching and excavation procedures, Depth of Operation Waler Systems are designed to support lateral earth pressure through the strength of its hydraulic cylinders. Lateral Earth Pressure being a function of the equivalent weight effect of the soil and the depth



of excavation. Waler Systems may be used to shore trenches up to 20 feet in depth in Type A and B soils with the charts provided in Appendix D of the OSHA excavation standard (subpart P), and up to 20 feet in Type A, B, and C-60 soils with Speed Shore Manufacturer's Tabulated Data. Lifting Sling When required Waler Systems must be lifted with a removable sling manufactured in compliance with the requirements of OSHA standard for rigging equipment, and rated for the anticipated load. Please note that tie-down chains and other improvised slings are not appropriate as lifting devices. Inspection The designated Competent Person will inspect all components of the shoring system prior to use, as well as daily and when changes in jobsite conditions require. Any damaged, defective or inadequate components shall be repaired or replaced. ACCESSORY ITEMS Hydraulic Pump – required to pressurize the shoring system. There are three pumps available for use: HP-100 - Manual hydraulic pump – 5 gallon metal container HVP-2000 - High volume manual hydraulic pump with 7 ½ gallon plastic container. HP-200 - 12-volt electric hydraulic pump Shoring Fluid – required for use with hydraulic pumps. Speed Shore manufactures two grades of shoring fluid: SF-SG-12 - Summer grade shoring fluid concentrate *Sold as one case of 12 each- 8oz. Bottles. *One 8oz. bottle of SG fluid is used per 5 gallons

of water. SF-WG-06 - Winter grade shoring fluid concentrate *Sold as one case of 6 each – 1 gallon bottles *Mix ratios are prescribed on each container Release/Removal Tools After desired pressure is applied, release of hydraulic hose from the cylinder connection is accomplished by means of a Waler Release Tool. The tool is also utilized to release pressure from the cylinders prior to removal of the Waler System from the excavation. Speed Shore manufactures three lengths available for use.

Standard Duty Waler Tools RH-W-30 – 30” Release Tool RH-W-48 – 48” Release Tool RH-W-96 – 96” Release Tool Medium and Heavy Duty Waler Tools RT-WMH-30 – Release Tool RT-WMH-48 – Release Tool RT-WMH-96 – Release Tool Manifold Connection of the hydraulic pump to the cylinders of the Waler System is made by means of a hand held manifold which includes valves to control flow of hydraulic fluid to individual, combinations of cylinders or the full system. Manifold units include hoses for connection to the various cylinders. Extension hoses are available for deep installations. Speed Shore manufactures three different manifolds available for use:

HBM-144-2 (2-Way Hose Bridle Manifold) HBM-144-3 (3-Way Hose Bridle Manifold) HBM-144-4 (4-Way Hose Bridle Manifold)

Installation Procedures Stable Soils that will stand throughout excavation, the following procedure is appropriate:

1. Complete the excavation. 2. Attach the 4 point lifting sling to the 4

lifting eyes on the Waler. 3. Connect appropriate hose bridle manifold

by coupling a hose to each cylinder of the Waler. Care should be taken to connect hoses in series with cylinders to maintain relationship of the valve being operated to the cylinder responding to pressure.

4. Connect the female coupler on the pump hose to the male coupler on manifold system. Valve arrangements on the manifold should be as follows: a) Valves on pressure hoses connected to cylinders should be open. b) Discharge valve on the dump line should be closed.

5. Prime the system by pumping enough fluid to initiate movement of cylinders.



6. Waler rails should now be expanded to a position slightly less than the inside dimension of the excavation

7. Lift and suspend the Waler at its intended location in the excavation (between 1 ft. and 2 ft. below surface).

8. Next drop in the approved sheeting between the waler and the wall of the excavation.

9. Pump the system to pressure desired (750-1,000 psi), momentarily monitor pressure gauge for pressure loss, and then release hydraulic coupler from cylinder by use of the Waler Release Tool.

10. Release pressure from the pump hose/manifold by opening the bypass valve on the hydraulic pump. This relief will be indicated by the pressure gauge on the pump.

11. Care must be taken to insure that hydraulic connections are kept clean during removal and reconnection to the next Waler System.

12. Connect the hose assembly to the next Waler to be installed.

13. Lower Waler units should be lifted in a non-pressured state so they will be narrow enough to insert through the previously installed units.

14. Insert lower Walers through those installed and position at desired elevation. Repeat above procedure to pressure unit and remove hoses.

Less-Stable Soils that tend to fail as digging progresses and do not present a near vertical excavation face or wall, may require that sheeting be driven prior to beginning excavation. In this case:

1. Start digging a pilot cut 2-3 feet deep. 2. Follow steps 2 through 7 under stable soils. 3. Drive the sheeting around the perimeter of

the first waler in the excavation to the desire depth of the excavation.

4. Excavate from within the driven sheeting to the final required depth or to the depth of the next waler to be installed.

5. Insert the second Waler through the previously installed unit and complete installation.

6. Lower units may be installed following the above procedure.

Observe that the undisturbed soil will support sheeting prior to installation of the first Waler.

Thereafter, installed Walers will support the upper area of the sheeting while undisturbed soil supports the lower area. PLEASE NOTE: Final determination of the installation procedures will be up to the Competent Person to follow safe installation procedures depending on soil and site conditions. Also on the installation of multiple walers in a vertical plane, the walers may be stacked on top of each other, lifting sling attached to the bottom unit, and the multiple units lifted and installed at the same time. This may require multiple hose bridal manifolds. Removal Procedures To remove Waler Systems from the excavation the following procedure is suggested:

1. Connect lifting slings to lifting eyes on the bottom unit.

2. From the surface of the excavation, relieve pressure on the cylinders in the Waler by use of the Waler Release Tool. The tool is used to press on the male connector on the tip of the cylinder allowing shoring fluid to escape to the excavation. Initially release a small amount of fluid from the cylinder and observe the shoring system for any indication of soil movement. Take care to remain in a safe position during continued pressure release. After observing the effect of pressure release upon the system, complete fluid removal until the cylinder has been compressed to the desired position.

3. After pressure has been relieved on the cylinders, lift the unit up to the next Waler above. Repeat pressure relief on that Waler and lift if by means of the unit previously released.

4. Continue this procedure until all units are removed from the excavation.

5. Disconnect and store the hydraulic assembly and manifold.

6. Remove sheeting as appropriate. PLEASE NOTE: Final removal procedures to be determined by the Competent Person on job site based on backfill requirements.



Note: Waler Systems should always be installed from the top down and removed beginning with the bottom unit and working upward. All installations and removal should be accomplished from outside the excavation. Speed Shore Waler Systems must always be installed in accordance with requirements of all regulatory agencies having jurisdiction over shoring systems, and installation must meet the minimum requirements of current Manufacturer’s Tabulated Data published by Speed Shore Corporation.

Examples of typical installations:

MANUFACTURERS TABULATED DATA

WALER SYSTEM

January 1, 1995

3330 S. SAM HOUSTON PKWY E. HOUSTON, TEXAS 77047

Tel: (713) 943-0750 U.S.A. Toll Free: (800) 231-6662 Fax: (713) 943-8483

COPYRIGHT, U.S.A., SPEED SHORE CORPORATION, 1995

January 1, 1995 WALER SYSTEMS Page 2 of 8


W A R N I N G

EXCAVATION PROCEDURES MAY BE VERY DANGEROUS A TRAINED COMPETENT PERSON SHALL: SUPERVISE ALL EXCAVATION

OPERATIONS, ENSURE THAT ALL PERSONNEL ARE WORKING IN SAFE CONDITIONS, AND HAVE THOROUGH KNOWLEDGE OF THIS TABULATED DATA. THE COMPETENT PERSON SHALL HAVE THE AUTHORITY TO STOP WORK WHEN IT IS UNSAFE FOR WORKERS TO ENTER AN EXCAVATION.

ALL PERSONNEL SHALL BE TRAINED IN CORRECT EXCAVATION PROCEDURES,

PROPER USE OF THE PROTECTIVE SYSTEM AND ALL SAFETY PRECAUTIONS. EXCAVATIONS AND PROTECTIVE SYSTEMS SHALL BE INSPECTED A MINIMUM OF

ONCE EACH WORKING DAY AND WHENEVER THERE IS A CHANGE OF SOIL, WATER OR OTHER JOB SITE CONDITIONS.

ALL LIFTING AND PULLING EQUIPMENT, INCLUDING CABLES, SLINGS, CHAINS,

SHACKLES AND SAFETY HOOKS SHALL BE EVALUATED FOR SUITABILITY AND CAPACITY, AND SHALL BE INSPECTED FOR DAMAGE OR DEFECTS PRIOR TO USE.

ALL INSTALLATION AND REMOVAL OF SHORING AND SHIELDING SHALL BE FROM

ABOVE GROUND ONLY. DO NOT ALLOW PERSONNEL TO ENTER AN EXCAVATION THAT IS NOT PROPERLY

SHORED, SHIELDED OR SLOPED. PERSONNEL SHALL ALWAYS WORK WITHIN THE SHORING AND SHIELDING.

PERSONNEL SHALL NOT STAND ON THE EDGE OF AN UNSHORED EXCAVATION. ALL PERSONNEL SHALL ENTER AND EXIT EXCAVATIONS ONLY WITHIN SHIELDED

OR SHORED AREAS. THIS SPEED SHORE TABULATED DATA IS A GENERAL SET OF GUIDELINES AND TABLES TO ASSIST THE COMPETENT PERSON IN SELECTING A SAFETY SYSTEM AND THE PROPER SHORING OR SHIELDING EQUIPMENT. THE COMPETENT PERSON HAS SOLE RESPONSIBILITY FOR JOB SITE SAFETY AND THE PROPER SELECTION AND INSTALLATION AND REMOVAL OF THE SHORING OR SHIELDING EQUIPMENT. THIS TABULATED DATA IS NOT INTENDED TO BE USED AS A JOB SPECIFIC EXCAVATION SAFETY PLAN, BUT SHALL BE USED BY THE COMPETENT PERSON TO SUPPLEMENT HIS TRAINING, HIS EXPERIENCE AND HIS KNOWLEDGE OF THE JOB CONDITIONS AND SOIL TYPE.



SPEED SHORE TABULATED DATA

1.0 SCOPE

1.1 Speed Shore's Tabulated Data complies with the O.S.H.A. standards as stated in the Code of Federal

Regulations 29, Part 1926, Subpart P - Excavations, Section 1926.652(c)(2). This data shall only be used by the contractor's competent person in the selection of Wales and sheeting for Speed Shore Waler Systems. The competent person shall be experienced and knowledgeable in trenching and excavation procedures, soil identification and in the use of Speed Shore Waler Systems.

1.2 All personnel involved in the installation, removal and use of Waler Systems shall be trained in their use and advised of appropriate safety procedures. All operating instructions must be followed.

1.3 Table W-1, W-2 and W-3 are based upon requirements stated in CFR 29, Part 1926 and applicable portions of CFR 29, Part 1910. The competent person shall know and understand the requirements of those parts before using this data.

1.4 Whenever there is a variance between this Tabulated Data and CFR 29, Part 1926, Subpart P - Excavations, this Tabulated Data shall take precedence. Whenever a topic or subject is not contained in this Tabulated Data, the competent person shall refer to CFR 29, Part 1926, Subpart P - Excavations.

1.5 Tables W-1, W-2 and W-3 shall be used only in typical excavations with soil conditions as noted. Table W-1, W-2 and W-3 are for depths to 20 feet. For other soil and excavation conditions and depths, site-specific engineered designs are required. Contact Speed Shore Corporation for assistance

1.6 This Tabulated Data is applicable for standard products manufactured exclusively by Speed Shore Corporation and may only be used with Speed Shore manufactured products. Any modification or repair of Speed Shore products not specifically authorized by Speed Shore Corporation voids this data.

1.7 This data refers to the Code of Federal Regulations, 29, Parts 1910 and 1926. In states that have their own state O.S.H.A. refer to similar regulations in the current construction rules published by the state office of Occupational Health and Safety.

1.8 This Data is for Waler Systems with hydraulic cylinders only and does not include Waler Systems with Speed Struts.

2.0 DEFINITIONS (RE: CFR 29, Part 1926.32 Definitions) - RESTATED FOR EMPHASIS

2.1 1926.32 (f) "competent person" means one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous or dangerous to employees; and who has authorization to take prompt corrective measures to eliminate them.

2.2 1926.32 (p) "Shall" means mandatory. 3.0 SOIL CLASSIFICATIONS

3.1 In order to use the data presented in Tables W-1 and W-3 the soil type, or types, in which the excavation is cut, shall first be determined by the competent person according to the O.S.H.A. soil classifications as set forth in CFR 29, Part 1926, Subpart P, Appendix A.

3.2 Table W-2 is also for Waler use in Type C-60 soil (see 3.3 for definition). 3.3 Type C-60 soil is a moist, cohesive soil or a moist dense granular soil, which does not fit into Type A

or Type B classifications, and is not flowing or submerged. This material can be cut with near vertical sidewalls and will stand unsupported long enough to allow the Walers to be properly installed. The competent person must monitor the excavation for signs of deterioration of the soil as indicated by, but not limited to, freely seeping water or flowing soil entering the excavation around or below the sheeting. An alternate design for less stable Type C soil will be required where there is evidence of deterioration.



4.0 PRESENTATION OF INFORMATION

4.1 Information is presented in tabular form in Tables W-1, W-2 and W-3. Table W-1 is for O.S.H.A. Type A & B Soil, Table W-2 for Waler use in Type C-60 soil (see 3.3 for definition). Table W-3 is for Waler use in O.S.H.A. Type C soil.

4.2 Tables W-1, W-2 and W-3 are not considered adequate when loads imposed by structures, or by stored material adjacent to the trench, weigh in excess of the load imposed by 3 feet of soil surcharge. The term "adjacent" as used here means the area within a horizontal distance from the edge of the trench equal to the depth of the trench.

4.3 Using the appropriate table, the competent person selects the horizontal spacing of the Waler model and the sheeting required. The selection is based on the depth and width of the trench in varying soil conditions. In tables W-1, W-2, and W-3 the vertical spacing of the cylinders is held constant at a maximum of 4 feet on center.

5.0 BASIS AND LIMITATIONS OF THE DATA

5.1 The following sheeting materials, or approved equal, may be used as noted in Tables W-1, W-2 and W-3: 5.1.1 Aluminum: Speed Shore's Aluminum Sheeting 5.1.2 Timber: Sizes noted in Tables W-1, W-2, and W-3. Species shall be Douglas Fir with

a minimum bending strength (Fb) of 1,500 p.s.i. or Oak with a Fb of 850 p.s.i. Douglas Fir Timber is S4S nominal dimension and Oak Timber is rough cut dimension.

5.1.3 Steel: 1/2 inch or thicker Steel Plate 5.1.4 Plywood:

3/4 inch Finn Form 3/4 inch Omni Form 3/4 inch Combi Exterior Plywood 3/4 inch 14 Ply Artic White Birch 3/4 inch Plyform American Plywood Association, Plyform, B - B, Class I Exterior 3/4 inch HDO American Plywood Association, High Density Overlay, Exterior 1 1/8 inch CDX Two sheets of 3/4 inch thick CDX

5.2 All spacing indicated is measured from center to center of the hydraulic cylinders. 5.3 The center line of the top Walers shall be a minimum of 12 inches and a maximum of 24 inches

below the top of the excavation. 5.4 The center line of the bottom Waler shall be a maximum of 4 feet above the bottom of the excavation

in Tables W-1, W-2. In Table W-3 the bottom Waler shall be a maximum of 4 feet above the bottom of the excavation if the sheeting is over-driven 12 inches. If the sheeting is not over-driven, the bottom Waler shall be a maximum of 2 feet, 6 inches above the bottom of the excavation.

5.5 The sheeting directly behind the end of each hydraulic cylinder must bear on firm soil or a solid and stable filler to distribute the cylinder load to the face of the excavation. Do not butt Waler rails back to back across an excavation.

5.6 When the length of the excavation is long enough to allow Walers to be placed end to end, the ends of the Walers shall not be more than 6 inches apart.

5.7 The maximum vertical spacing between center lines of Walers shall be 4 feet. 5.8 The faces of the excavation must be cut near vertical and straight 5.9 In excavations 6 feet deep or less, 1 Wale is required in each vertical plane. The Wale shall be no

more than 4 feet above the bottom of the excavation and no more than 2 feet below the top of the excavation. In excavations over 6 feet deep, there shall be a minimum of 2 Walers stacked one above the other as a unit. In excavation deeper that 10 feet, there shall be more than 2 Walers to comprise a vertical unit.

5.10 In short trenches that are only long enough for 1 Wale length the maximum horizontal length of the excavation: 8 feet for a 4 feet Waler, 10 feet for a 6 feet Waler, 12 feet for an 8 Waler, 16 feet for a 12 feet Waler, and 20 feet for a 16 feet Waler.

5.11 The ends of trenches shall be shored or sloped in accordance with Appendix B of CFR 29, Part 1926 Subpart P Excavations.



5.12 No vertical loads shall be applied to the hydraulic cylinders. 5.13 Water flowing into an excavation, from either above or below ground, will cause a decrease in the

stability of the soil. Therefore, the competent person shall take action to prevent water from entering the excavation and promptly remove any water that accumulates in the excavation. Closer monitoring of the soil is required under wet conditions, particularly in less cohesive (weaker) soil conditions. A small amount of water in any excavation may downgrade the soil classification to a less stable classification. A large amount of water, or flowing conditions, may downgrade all soils to O.S.H.A. Type C. Speed Shore shoring and shielding systems may be used safely in wet conditions when the excavation is monitored by the competent person. Example: When repairing a leak in utility lines, it is often difficult or even impossible, to keep water out of the excavation.

5.14 Tables W-l, W-2 and W-3 are for standard Speed Shore Waler models W8, WM8, WH8, W12, WM12, WH12, W16, WM16 and WH16. “W” is standard Waler (section modulus 3.67 cubic inches), “WM” is medium duty Waler (section modulus 9.71 cubic inches), and “WH” is heavy duty Waler (section modulus 14.5 cubic inches). The lengths of the Walers are 8, 12 and 16 feet long.

5.15 Tables W-1, W-2 and W-3 do not include Wales with Speed Struts. See Tabulated Data, “Waler Systems with Speed Struts”.

6.0 INSPECTION

6.1 The competent person must evaluate the soils to assure the rated capacity of the Waler Systems is not exceeded by the lateral pressure of the soil. Soils shall be evaluated in accordance with Part 3.0.

6.2 The competent person shall monitor all phases of the assembly, installation and use of this product to evaluate and eliminate methods, which could endanger employees utilizing this product.

6.3 Daily inspections of the Waler Systems and accessories must be performed by the competent person and deficiencies corrected.

6.4 Inspections shall be conducted as necessary for hazards associated with: water accumulation, changing soil conditions, or changing site weather conditions.

7.0 EXAMPLE TO ILLUSTRATE THE USE OF TABLES W-1, W-2 and W-3:

Problem: Design a trench safety system using Speed Shore Waler Systems with hydraulic cylinders for an excavation 8 feet deep and 4 feet wide in O.S.H.A. Type C soil. Study tables: Select Table W-3 for O.S.H.A. Type C soils. Look in the column “Depth of Excavation” on line 0 to 12 feet. Next, read across for Maximum Vertical Spacing of 4 feet. Next, locate three alternatives under “Waler Model”. WM8, WH8 and WH16. Models WM8 and WH8 has a maximum horizontal spacing of 6.5 feet and model WH16 has a maximum horizontal spacing of 7.25 feet between hydraulic cylinders. Reading further across under “Width of Excavation”, 0 to 8 feet, find 2 inch diameter hydraulic cylinders for all three alternatives. Sheeting notes 9 and 10 apply. Conclusion: Any 1 of 2 Speed Shore Waler models WH8 or WH16 may be installed with 2 inch hydraulic cylinders at 4 feet vertical spacing. Sheeting is a minimum of 3x8 timbers at close spacing (or equivalent sheeting). (See Notes 9 and 10).



WALER SYSTEMS WITH HYDRAULIC CYLINDERS

(Speed Strut models not included in these tables)

TABLE W-1 TYPE “A” AND “B” SOILS

WALER HYDRAULIC CYLINDERS Depth Maximum Waler Maximum Width of Sheeting

of Vertical Model Horizontal Excavation Excavation Spacing Spacing

(Note 4) (Note 11) (Note 2) FEET (Note 3)

FEET FEET W WM WH FEET 0 to 8 8 to 12 12 to 15 8 8 8 6.50

0 to 12 4 16 16 16 7.25 2" dia. 2" dia. 2" dia. (Note 5) 12 12 12 10.50 (Note 1) 8 8 8 6.50

0 to 15 4 16 16 16 7.25 2" dia. 2" dia. 2" dia. - - 12 10.50 (Note 1) (Note 6) - 8 8 6.50 2" dia. 2"dia. (Note 1) 2"dia. (Note 1)

0 to 20 4 - 16 16 7.25 2" dia. 3" dia. 3" dia. - - 12 10.50 2"dia. 2"dia.(Note 4) 2"dia. (Note 1)

(See notes on page 7 of 8)

TABLE W-2 TYPE “C-60” SOILS (See 3.3 for definition of C-60 Soil)



(Note 4) (Note 11) (Note 2) FEET

FEET FEET W WM WH FEET 0 to 8 8 to 12 12 to 15 8 8 8 6.50

0 to 12 4 16 16 16 7.25 2" dia. 2" dia. 2" dia. (Note 3 12 12 12 10.50 (Note 1) and 6) - 8 8 6.50 2" dia. 2" dia. 2"dia.(Note 1)

0 to 15 4 - - 16 7.25 2" dia. 3" dia. 3" dia. (Note 7) - - 12 10.50 2" dia. 2" dia. 2"dia. - - 8 6.50 2" dia. (Note1) (Note1)

0 to 20 4 - - 16 7.25 (Note 8) - - 12 10.50 3" dia. 3" dia. 3" dia.

(See notes on page 7 of 8)



WALER SYSTEMS WITH HYDRAULIC CYLINDERS (Speed Strut models not included in these tables)

TABLE W-3 TYPE “C” SOILS



(Note 4) (Note 11) (Note 2) FEET

FEET FEET W WM WH FEET 0 to 8 8 to 12 12 to 15 0 to 12 4 - 8 8 6.50 2" dia. 2"dia. 2"dia (Note1)

- - 16 7.25 2" dia. 2" dia.(Note 1) 3" dia. (Notes 9

0 to 15 4 - - 8 6.50 2"dia. 2"dia. 2" dia (Note

1) and 10) - - 16 7.25

0 to 20 4 - - 8 6.50 3" dia. 3" dia. 3" dia. (See notes on page 7 of 8) NOTES TO TABLES W-1, W-2 and W-3 (1) 2 inch diameter cylinders shall have a structural steel tube oversleeve 3.5 x 3.5 x 0.1875 inch (installed over the aluminum oversleeve extension) or 3 x 3 x 0.1875 inch (installed without the aluminum oversleeve) that extends the full retracted length of the cylinder. CAUTION: In either case, the aluminum load transfer plug and the aluminum innersleeve shall be used or a steel load transfer plug shall be welded securely in place inside the steel oversleeve to transfer the load through the steel oversleeve to the socket pad. Other Speed Shore approved oversleeves may be used. (2) Dimensions shown are the maximum horizontal spacing of hydraulic cylinders within each Waler. (3) The bottom of the sheeting shall extend within 2 feet of the bottom of the excavation. If there is an indication of a possible loss of soil from behind or below the support system, sheeting must extend to the bottom of the excavation. (4) The bottom Waler shall be a maximum of 4 feet above the bottom of the excavation. (5) Four feet wide plywood sheeting at close spacing or 2 x 8 inch timber sheeting at 2 feet on center spacing is required if raveling or sloughing of the face of the excavation appears likely to occur. (6) Four feet wide plywood sheeting at close spacing or 2 x 8 inch timber sheeting at close spacing is required. (7) 2 x 8 inch timber sheeting at close spacing shall extend to the bottom of the excavation. (8) 3 x 8 inch timber sheeting at close spacing shall extend to the bottom of the excavation. (9) The bottom Waler shall be a maximum of 4 feet above the bottom of the excavation if the sheeting is over-driven 12 inches. If the sheeting is not over-driven, the bottom Waler shall be a maximum of 2 feet, 6 inches above the bottom of the excavation. (10) 3 x 8 inch timber sheeting at close spacing shall be over-driven a minimum of 12 inches into the bottom of the excavation or extend to the bottom of the excavation to match the Waler spacing in Note 9. (11) Speed Strut models not included in these tables.

EXAMPLES OF TYPICAL INSTALLATION



MANUFACTURERS TABULATED DATA

WALER SYSTEM

WITH SPEED STRUTS

January 1, 1995

3330 S. SAM HOUSTON PKWY E. HOUSTON, TEXAS 77047

Tel: (713) 943-0750 U.S.A. Toll Free: (800) 231-6662 Fax: (713) 943-8483


January 1, 1995 WALER SYSTEMS WITH SPEED STRUT Page 2 of 8


W A R N I N G

EXCAVATION PROCEDURES MAY BE VERY DANGEROUS A TRAINED COMPETENT PERSON SHALL: SUPERVISE ALL EXCAVATION

OPERATIONS, ENSURE THAT ALL PERSONNEL ARE WORKING IN SAFE CONDITIONS, AND HAVE THOROUGH KNOWLEDGE OF THIS TABULATED DATA. THE COMPETENT PERSON SHALL HAVE THE AUTHORITY TO STOP WORK WHEN IT IS UNSAFE FOR WORKERS TO ENTER AN EXCAVATION.

ALL PERSONNEL SHALL BE TRAINED IN CORRECT EXCAVATION PROCEDURES,

PROPER USE OF THE PROTECTIVE SYSTEM AND ALL SAFETY PRECAUTIONS. EXCAVATIONS AND PROTECTIVE SYSTEMS SHALL BE INSPECTED A MINIMUM OF

ONCE EACH WORKING DAY AND WHENEVER THERE IS A CHANGE OF SOIL, WATER OR OTHER JOB SITE CONDITIONS.

ALL LIFTING AND PULLING EQUIPMENT, INCLUDING CABLES, SLINGS, CHAINS,

SHACKLES AND SAFETY HOOKS SHALL BE EVALUATED FOR SUITABILITY AND CAPACITY, AND SHALL BE INSPECTED FOR DAMAGE OR DEFECTS PRIOR TO USE.

ALL INSTALLATION AND REMOVAL OF SHORING AND SHIELDING SHALL BE FROM

ABOVE GROUND ONLY. DO NOT ALLOW PERSONNEL TO ENTER AN EXCAVATION THAT IS NOT PROPERLY

SHORED, SHIELDED OR SLOPED. PERSONNEL SHALL ALWAYS WORK WITHIN THE SHORING AND SHIELDING.

PERSONNEL SHALL NOT STAND ON THE EDGE OF AN UNSHORED EXCAVATION. ALL PERSONNEL SHALL ENTER AND EXIT EXCAVATIONS ONLY WITHIN SHIELDED

OR SHORED AREAS. THIS SPEED SHORE TABULATED DATA IS A GENERAL SET OF GUIDELINES AND TABLES TO ASSIST THE COMPETENT PERSON IN SELECTING A SAFETY SYSTEM AND THE PROPER SHORING OR SHIELDING EQUIPMENT. THE COMPETENT PERSON HAS SOLE RESPONSIBILITY FOR JOB SITE SAFETY AND THE PROPER SELECTION AND INSTALLATION AND REMOVAL OF THE SHORING OR SHIELDING EQUIPMENT. THIS TABULATED DATA IS NOT INTENDED TO BE USED AS A JOB SPECIFIC EXCAVATION SAFETY PLAN, BUT SHALL BE USED BY THE COMPETENT PERSON TO SUPPLEMENT HIS TRAINING, HIS EXPERIENCE AND HIS KNOWLEDGE OF THE JOB CONDITIONS AND SOIL TYPE.



SPEED SHORE TABULATED DATA

1.0 SCOPE

1.1 Speed Shore's Tabulated Data complies with the O.S.H.A. standards as stated in the Code of Federal

Regulations 29, Part 1926, Subpart P - Excavations, Section 1926.652(c)(2). This data shall only be used by the contractor's competent person in the selection of Speed Shore Waler Systems. The competent person shall be experienced and knowledgeable in trenching and excavation procedures, soil identification and in the use of Speed Shore Waler Systems.

1.2 All personnel involved in the installation, removal and use of Waler Systems shall be trained in their use and advised of appropriate safety procedures. All operating instructions must be followed.

1.3 Table WSS-1, WSS-2 and WSS-3 are based upon requirements stated in CFR 29, Part 1926 and applicable portions of CFR 29, Part 1910. The competent person shall know and understand the requirements of those parts before using this data.

1.4 Whenever there is a variance between this Tabulated Data and CFR 29, Part 1926, Subpart P - Excavations, this Tabulated Data shall take precedence. Whenever a topic or subject is not contained in this Tabulated Data, the competent person shall refer to CFR 29, Part 1926, Subpart P - Excavations.

1.5 Tables WSS-1, WSS-2 and WSS-3 shall be used only in typical excavations with soil conditions as noted. Tables WSS-1 and WSS-2 are for depths to 20 feet. Table WSS-3 are for depths to 15 feet. For other soil and excavation conditions and depths, site-specific engineered designs are required. Contact Speed Shore Corporation for assistance

1.6 This Tabulated Data is applicable for standard products manufactured exclusively by Speed Shore Corporation and may only be used with Speed Shore manufactured products. Any modification or repair of Speed Shore products not specifically authorized by Speed Shore Corporation voids this data.

1.7 This data refers to the Code of Federal Regulations, 29, Parts 1910 and 1926. In states that have their own state O.S.H.A. refer to similar regulations in the current construction rules published by the state office of Occupational Health and Safety.

2.0 DEFINITIONS (RE: CFR 29, Part 1926.32 Definitions) - RESTATED FOR EMPHASIS

2.1 1926.32 (f) "competent person" means one who is capable of identifying existing and predictable hazards in the surroundings or working conditions which are unsanitary, hazardous or dangerous to employees; and who has authorization to take prompt corrective measures to eliminate them.

2.2 1926.32 (p) "Shall" means mandatory. 3.0 SOIL CLASSIFICATIONS

3.1 In order to use the data presented in Tables WSS-1 and WSS-3 the soil type, or types, in which the excavation is cut, shall first be determined by the competent person according to the O.S.H.A. soil classifications as set forth in CFR 29, Part 1926, Subpart P, Appendix A.

3.2 Table WSS-2 is also for Waler use in Type C-60 soil (see 3.3 for definition). 3.3 Type C-60 soil is a moist, cohesive soil or a moist dense granular soil, which does not fit into Type A

or Type B classifications, and is not flowing or submerged. This material can be cut with near vertical sidewalls and will stand unsupported long enough to allow the Waler Systems to be properly installed. The competent person must monitor the excavation for signs of deterioration of the soil as indicated by, but not limited to, freely seeping water or flowing soil entering the excavation around or below the sheeting. An alternate design for less stable Type C soil will be required where there is evidence of deterioration.



4.0 PRESENTATION OF INFORMATION

4.1 Information is presented in tabular form in Tables WSS-1, WSS-2 and WSS-3. Table WSS-1 is for O.S.H.A. Type A & B Soil, Table WSS-2 for Waler use in Type C-60 soil (see 3.3 for definition). Table WSS-3 is for Waler use in O.S.H.A. Type C soil.

4.2 Tables WSS-1, WSS-2 and WSS-3 are not considered adequate when loads imposed by structures or by stored material adjacent to the trench weigh in excess of the load imposed by 3 feet of soil surcharge. The term "adjacent" as used here means the area within a horizontal distance from the edge of the trench equal to the depth of the trench.

4.3 Using the appropriate table, the competent person selects the horizontal spacing of the Waler model and the sheeting required. The selection is based on the depth and width of the trench in varying soil conditions. In tables WSS-1, WSS-2, and WSS-3 the vertical spacing of the cylinders is held constant at a maximum of 4 feet on center.

5.0 BASIS AND LIMITATIONS OF THE DATA

5.1 The following sheeting materials, or approved equal, may be used as noted in Tables WSS-1, WSS-2 and WSS-3: 5.1.1 Aluminum: Speed Shore's Aluminum Sheeting 5.1.2 Steel: 1/2 inch or thicker Steel Plate 5.1.3 Timber: Sizes noted in Tables WSS-1, WSS-2, and WSS-3. Species shall be Douglas

Fir with a minimum bending strength (Fb) of 1,500 p.s.i. or Oak with a Fb of 850 p.s.i. Douglas Fir Timber is S4S nominal dimension and Oak Timber is rough cut dimension.

5.1.4 Plywood: 3/4 inch Finn Form 3/4 inch Omni Form 3/4 inch Combi Exterior Plywood 3/4 inch 14 Ply Artic White Birch 3/4 inch American Plywood Association, Plyform, B - B, Class I, Exterior 3/4 inch American Plywood Association, High Density Overlay, Exterior 1 1/8 inch CDX Two sheets of 3/4 inch thick CDX Plywood.

5.2 All spacing indicated is measured from center to center of the Speed Struts. 5.3 The center line of the top Walers shall be a minimum of 12 inches and a maximum of 24 inches

below the top of the excavation. 5.4 The center line of the bottom Waler shall be a maximum of 4 feet above the bottom of the excavation

in Tables WSS-1, WSS-2. In Table WSS-3 the bottom Waler shall be a maximum of 4 feet above the bottom of the excavation if the sheeting is over-driven 12 inches. If the sheeting is not over-driven, the bottom Waler shall be a maximum of 2 feet, 6 inches above the bottom of the excavation.

5.5 The sheeting directly behind the end of each hydraulic cylinder must bear on firm soil or a solid and stable filler to distribute the cylinder load to the face of the excavation. Do not butt Waler rails back to back across an excavation.

5.6 When the length of the excavation is long enough to allow Walers to be placed end to end, the ends of the Walers shall not be more than 6 inches apart.

5.7 The maximum vertical spacing between center lines of Walers shall be 4 feet. 5.8 The faces of the excavation must be cut near vertical and straight 5.9 In excavations 6 feet deep or less, 1 Wale is required in each vertical plane. The Wale shall be no

more than 4 feet above the bottom of the excavation and no more than 2 feet below the top of the excavation. In excavations over 6 feet deep, there shall be a minimum of 2 Walers stacked one above the other as a unit. In excavation deeper that 10 feet, there shall be more than 2 Walers to comprise a vertical unit.



5.10 In short trenches that are only long enough for 1 Wale length the maximum horizontal length of the excavation: 8 feet for a 4 feet Waler, 10 feet for a 6 feet Waler, 12 feet for an 8 Waler, 16 feet for a 12 feet Waler, and 20 feet for a 16 feet Waler.

5.11 The ends of trenches shall be shored or sloped in accordance with Appendix B of CFR 29, Part 1926 Subpart P Excavations.

5.12 No vertical loads shall be applied to the hydraulic cylinders or Speed Struts. 5.13 Water flowing into an excavation, from either above or below ground, will cause a decrease in the

stability of the soil. Therefore, the competent person shall take action to prevent water from entering the excavation and remove any water that accumulates in the excavation. Closer monitoring of the soil is required under wet conditions, particularly in less cohesive (weaker) soil conditions. A small amount of water in any excavation may downgrade the soil classification to a less stable classification. A large amount of water, or flowing conditions, may downgrade all soils to O.S.H.A. Type C. Speed Shore shoring and shielding systems may be used safely in wet conditions when the excavation is monitored by the competent person. Example: When repairing a leak in utility lines, it is often difficult or even impossible, to keep water out of the excavation.

5.14 Tables WSS-l, WSS-2 and WSS-3 are for standard Speed Shore Waler models WM6, WH6, WM8, WH8, WM12, WH12, WM16 and WH16. “WM” is medium duty Waler (section modulus 9.71 cubic inches), and “WH” is heavy duty Waler (section modulus 14.5 cubic inches). The lengths of the Walers are 6, 8, 12 and 16 feet long.

6.0 INSPECTION

6.1 The competent person must evaluate the soils to assure the rated capacity of the Waler Systems is not exceeded by the lateral pressure of the soil. Soils shall be evaluated in accordance with Part 3.0.

6.2 The competent person shall monitor all phases of the assembly, installation and use of this product to evaluate and eliminate methods, which could endanger employees utilizing this product.

6.3 Daily inspections of the Waler Systems and accessories must be performed by the competent person and deficiencies corrected.

6.4 Inspections shall be conducted as necessary for hazards associated with: water accumulation, changing soil conditions, or changing site weather conditions.

7.0 EXAMPLE TO ILLUSTRATE THE USE OF TABLES WSS-1, WSS-2 and WSS-3:

Problem: Design a trench safety system using Speed Shore Waler Systems with Speed Struts for an excavation 8 feet deep and 4 feet wide in O.S.H.A. Type C soil. Study tables: Select Table WSS-3 for O.S.H.A. Type C soils. Look in the column “Depth of Excavation” on line 0 to 12 feet. Next, read across for Maximum Vertical Spacing of 4 feet. Find alternatives (WH-6-SS, WH-8-SS, WM-6-SS and WM-8-SS) under “Waler Model”. Sheeting Notes 9, 10and 11 apply. Conclusion: Either of Speed Shore Waler models WH-6-SS, WH-8-SS, WM-8-SS may be installed at 4 feet vertical spacing. Sheeting is a minimum of 3 x 8 timbers at close spacing (or equivalent sheeting). (See Notes 9, 10 and 11)



WALER SYSTEMS WITH SPEED STRUTS TABLE WSS-1 TYPE “A” AND “B” SOILS

(See Notes 1 and 13)

WALER SPEED STRUT Depth Waler Sheeting

of Maximum Model Maximum

Excavation Vertical Spacing Horizontal Spacing

(Notes 3 (Note 4) (Notes 14) (Note 2) and 11)

FEET FEET WM WH FEET WM-6-SS WH-6-SS 5.33

0 to 12 4 WM-8-SS WH-8-SS 7.33 (Note 5) WM-12-SS WH-12-SS 11.33 WM-16-SS WH-16-SS 7.67 WM-6-SS WH-6-SS 5.33

0 to 15 4 WM-8-SS WH-8-SS 7.33 - WH-12-SS 11.33 (Note 5) - WH-16-SS 7.67 WM-6-SS WH-6-SS 5.33

0 to 20 4 WM-8-SS WH-8-SS 7.33 (Note 6) - WH-12-SS 11.33

(See Notes on Page 7 of 8)

WALER SYSTEMS WITH SPEED STRUTS TABLE WSS-2 TYPE “C-60” SOIL

(See 3.3 for definition of C-60 Soil). (See Notes 1 and 13)




(Note 11 (Note 4) (Notes 14) (Note 2)

FEET FEET WM WH FEET WM-6-SS WH-6-SS 5.33

0 to 12 4 WM-8-SS WH-8-SS 7.33 (Notes 3 WM-12-SS WH-12-SS 11.33 and 6) WM-16-SS WH-16-SS 7.67 WM-6-SS WH-6-SS 5.33

0 to 15 4 WM-8-SS WH-8-SS 7.33 - WH-12-SS 11.33 (Note 7) WM-6-SS WH-6-SS 5.33

0 to 20 4 WM-8-SS WH-8-SS 7.33 (Note 8) - WH-12-SS 11.33

(See Notes on Page 7 of 8)



WALER SYSTEMS WITH SPEED STRUTS TABLE WSS-3 TYPE “C” SOILS

(See Notes 1 and 13)




(Note 11) (Note 4) (Notes 14) (Note 2)

FEET FEET WM WH FEET 0 to 12 4 WM-6-SS WH-6-SS 5.33

WM-8-SS WH-8-SS 7.33 (Notes 9) 0 to 15 4 WM-6-SS WH-6-SS 5.33 and 10)

- WH-8-SS 7.33 NOTES TO TABLES WSS-1, WSS-2 and WSS-3 (1) Only Speed Struts with 2 inch cylinders are to be used with Tables WSS-1, WSS-2, and WSS-3. (2) Dimensions shown are the maximum horizontal spacing of hydraulic cylinders within each Waler. (3) The bottom of the sheeting shall extend within 2 feet of the bottom of the excavation. If there is an indication of a possible loss of soil from behind or below the support system, sheeting must extend to the bottom of the excavation. (4) The bottom Waler shall be a maximum of 4 feet above the bottom of the excavation. (5) 4 feet wide plywood sheeting at close spacing or 2 x 8 inch timber sheeting at 2 feet on center spacing is required if raveling or sloughing of the face of the excavation appears likely to occur. (6) 4 feet wide plywood sheeting at close spacing or 2 x 8 inch timber sheeting at close spacing is required. (7) 2 x 8 inch timber sheeting at close spacing shall extend to the bottom of the excavation. (8) 3 x 8 inch timber sheeting at close spacing shall extend to the bottom of the excavation. (9) The bottom Waler shall be a maximum of 4 feet above the bottom of the excavation if the sheeting is over-driven 12 inches. If the sheeting is not over-driven, the bottom Waler shall be a maximum of 2 feet, 6 inches above the bottom of the excavation. (10) 3 x 8 inch timber sheeting at close spacing shall be over-driven a minimum of 12 inches into the bottom of the excavation or extend to the bottom of the excavation to match the Waler spacing in Note 9. (11) Standard Speed Shore Aluminum Sheeting may be used. (12) Maximum width of trench is 92 inches. (13) Waler System will support end wall and side wall loading to depths shown in Tables WSS-1, WSS-2 and WSS-3. (14) “WM” is medium duty Wale with Sx=9.71 inch4, and “WH” is heavy duty Wale with Sx=14.5inch3.

EXAMPLES OF TYPICAL INSTALLATION



Documents

WALER SYSTEMS - Ohio Department of …...5. Cylinders shall be equipped with a solid piston head which permits maintenance of seals without detaching the piston head from the piston