American Railway Engineering & Maintenance-of-Way Association Letter Ballot

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1 Assignment: At the January 2017 meeting in Ft. Myers, FL ballot was proposed by the subcommittee and general committee to combine Sections 4.11 and 4.13 into a single Section and add Commentary. Rationale: Sections 4.11 and 4.13 were very closely related so combining them seems logical. Submitted by: Heather Gilmer, Chair SC 3 Fabrication & Erection Due Date: April 28, 2017 Replace existing Section 4.11, delete existing Section 4.13 (re-numbering subsequent Sections) and add new Commentary Section as shown. Section titles for existing Sections 4.18 through 4.31 are shown as they will appear in the 2017 Manual (due to relocation of Section 4.18 of the 2016 Manual to the Appendix). Deletions in bold red strikethrough, new text in red bold underline: SECTION 4.11 ERECTION PROCEDURE, SHORING, AND FALSEWORK ( ) 1 a. To assure the b. The Engineer will When required by the nature of the work or stipulated in the contract, erection procedure plans or demolition plans shall be prepared by the Contractor. a. It is the Contractor s responsibility to develop erection plans, shoring plans, falsework plans, and demolition plans. This shall include the design of all temporary supports, methods for lifting or jacking all temporary and permanent material, and the amount and type of equipment to be used. The contractor shall provide all work and materials for installing, maintaining, modifying or adjusting, and removing all shoring and falsework. The supports must be adequate to carry the entire balanced or unbalanced weight of the supported structure, plus all additional loads such as those resulting from wind forces, construction materials and equipment, temporary erection forces, accumulations of snow, ice, dirt, etc. b. The Contractor is responsible for the adequacy of the design, fabrication, installation, and maintenance of all shoring and falsework. The Contractor shall determine the actual maximum loads and imbalance moments and shall design a method that will safely support those loads and moments. c. If temporary falsework, shoring, or erection loads are placed on any portion of the permanent structure, the Contractor shall ensure that they are placed so that they cause no harm to any portion of the permanent structure. Use base plates, cap plates, grillages, softening blocks or other protection as needed between the shoring and/or falsework and the permanent structure.

2 d. The Contractor must retain the services of a licensed professional engineer to prepare, sign, and seal an erection plan and calculations for the erection of the structural steel. As a minimum, the erection plan must include: Erection Drawings, including falsework and shoring Erection procedure Any attachments or alterations to the permanent structure e. The Contractor and the Contractor s engineer must take into account all loads, forces, and conditions affecting the erection, shoring, and falsework. f. The erection documents must indicate, at a minimum, a detailed sequence for use and placement of each and every falsework item, including when they will be installed and removed. g. The sealed erection plan and calculations shall be submitted to the Engineer for general compliance review prior to installation. It will, however, remain the Contractor's responsibility to ensure that the structure is erected and shored where needed in a safe manner. The Engineer s consent to proceed shall be obtained before field erection may be started. 1 See Part 9 Commentary If the Contractor SECTION 4.12 ALTERATION OF MEMBERS (2016) SECTION 4.13 FALSEWORK (2016) Where the erection procedure involves the use of falsework, the Contractor shall prepare and submit to the Engineer for review, plans for the falsework. The falsework shall be properly designed and substantially constructed for the loads to which it will be subjected. Review by the Engineer of the Contractor s plans shall not be considered as relieving the Contractor of full responsibility. SECTION ALLOWABLE STRESSES DURING ERECTION (1991) R(2015) SECTION DRIFT OR TRAFFIC PINS (1991) R(2016) SECTION FIELD ASSEMBLY OF MEMBERS (2017) SECTION FIT-UP OF FIELD CONNECTIONS (2017) SECTION HIGH-STRENGTH BOLTED FIELD CONNECTIONS (1991) R(2015)

3 SECTION FIELD WELDING (1991) R(2015) SECTION FIELD CONNECTIONS USING PINS (1991) R(2015) SECTION FIELD INSPECTION (1991) R(2015) SECTION MISFITS (1991) R(2015) SECTION FIELD CLEANING AND COATING (2016) SECTION DECK (1991) R(2015) SECTION REMOVAL OF OLD STRUCTURE AND FALSEWORK, AND CLEANUP (1991) R(2015) a. Where required b. The Contractor shall provide blocking, shoring, struts, or falsework as necessary to safely dismantle or remove the existing structure. cb. Where the falsework is the property of the Company dc. Where the falsework is the property of the Contractor ed. The Contractor shall fe. On completion SECTION INTERFERENCE WITH TRAFFIC (1983) R( ) SECTION COMPANY EQUIPMENT (1983) R(2015) SECTION WORK TRAIN SERVICE (1983) R(2015) SECTION RISK (1983) R(2015) SECTION LAWS AND PERMITS (1983) R(2015) SECTION PATENTS (1983) R(2015) [Continued on next page]

4 [Add new Commentary] SECTION ERECTION PROCEDURE, SHORING, AND FALSEWORK (2018) a. Some projects are complex or have other peculiar aspects such that comprehensive erection plans are needed. On these types of projects, or other less complex projects, the Company may require that the Contractor prepare such plans and submit them for review. b. To assure the Company that erection will proceed in an orderly sequence and that it will be completed within the contract time, it is beneficial for the Contractor to advise the Engineer fully as to the procedure which will be followed and the amount and kind of equipment that is proposed for the project. e. Typical loads, forces, and conditions that must be considered would include, but not be limited to, the following: Soil conditions and potential effects on slope stability due to construction operations Sequencing of erection Shoring or falsework Stability Pick points Girder or member shape Girder or member deformation and roll Cross frame/diaphragm connections The use of oversize holes or slots Blocking of bearings Plumbness Specified tolerances Clearances to railroad operations Maintenance of rail traffic

5 Maintenance of vehicular traffic, if working over a public thoroughfare Maintenance of navigation, if working over a navigable waterway