SOLICITATION NOTICE
54 -- MAST CLIMBERS-SCAFFOLDING
- Notice Date
- 7/2/2008
- Notice Type
- Modification/Amendment
- NAICS
- 532490
— Other Commercial and Industrial Machinery and Equipment Rental and Leasing
- Contracting Office
- NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall SpaceFlight Center, AL 35812
- ZIP Code
- 35812
- Solicitation Number
- NNM08254174Q
- Response Due
- 7/18/2008
- Archive Date
- 7/2/2009
- Point of Contact
- Michael R. Sosebee, Contracting Officer, Phone 256-544-0415, Fax 256-544-8688, - Betty C. Kilpatrick, Contract Specialist, Phone 256-544-0310, Fax 256-544-6062
- E-Mail Address
-
michael.sosebee@msfc.nasa.gov, betty.c.kilpatrick@nasa.gov
- Small Business Set-Aside
- N/A
- Description
- THIS NOTICE CONSTITUTES AMENDMENT NO. 1 TO THE COMBINED SYNOPSIS/RFQ FOR MASTCLIMBERS-SCAFFOLDING. Companies shall acknowledge all amendment(s) in their quote. Thisnotice serves as the official amendment to subject synopsis/RFQ and a written amendmentwill not be issued.The purpose of this amendment is to answer questions generated from the on-site visit andto attach a concrete floor drawing of the test stand tower. Following are the questionsand answers:1.QUESTIONWhat are the dimensions of the protrusions around the structure being covered and at whatelevations and locations are they? What are the dimensions of the base flight hardware(under the structure being covered)? ANSWERThe base diameter of the SRB's is 146" the stiffener ring studs go out to a diameter of154".2.QUESTIONWhen will proposed drawings need to be submitted?ANSWERDrawings are not required for the quoting process.3.QUESTIONWhat is the start date of the work?ANSWERAward of contract is expected mid August4.QUESTIONWhat is the maximum number of people expected to be on the machine at a given time?ANSWERThe maximum number of people will be 85.QUESTIONVerify that the wall-tie support beams, (REF # 90M12311) located at the north elevationof the test stand will be able to withstand the following loads: 3,000lb compression/tension 1,000lb shearANSWERThese loads are acceptable and NASA can accommodate this design.6.QUESTIONProvide the minimum and maximum working radii of the test subject.ANSWERMin. 73", Max 77"7.QUESTIONProvide project start date.ANSWERMid August8.QUESTIONWhat is the delivery date of the Mast ClimbersANSWERProject delivery date is December 20089.QUESTIONMast climbers shall be driven by electric motors (are there any non-standard criteria forthe electrical components)ANSWERNo10.QUESTIONMast climbers shall have a synchronizing/leveling mechanism between the two motors in thetwo tower configuration (Should this be manual or automatic)ANSWERBoth11.QUESTIONMast climbers shall have a visible and audible alarm while in motion (are there anynon-standard criteria for the electrical components)ANSWERNo12.QUESTIONMastclimbers shall be automatically stopped if platforms become uneven during operationin the two tower configuration (There is the option to have an electrically operated,automatic self-leveling system fitted to ensure that the two units remain level at alltimes, this also includes a back-up fail-safe for the failure of the leveling systemand would manually allow the leveling of the units, is this preferable?)ANSWERThis system is acceptable as long as the requirement for automatic stop is met.13.QUESTIONMast climbers shall have safety controls for the upper and lower limit of travel(mechanical?, electrical? both?)ANSWERBoth14.QUESTIONMast climbers shall have the functionality of being used in a single tower configuration(What load and configuration would be required for each single unit?)ANSWERThe configuration would be where the mast is toward the work area. The load capacityshould be standard manufactures recommendations.15.QUESTIONMast climbers shall be able to use the main platform straight extensions from the twotower configuration in a single tower configuration (Please clarify by indicating desiredconfiguration and load characteristics)ANSWERWe want to be able to use the straight outer extensions that are used in the two towerconfiguration to attach to the sides of the platform in the one tower configuration. These extensions would go straight out on each side of the platform.16.QUESTIONMast climbers shall be anchored to the concrete floor with vendor supplied hardware(There a number of options here, e.g. bolt through slab, face mount, slab mount, steelbolts, stainless steel bolts. Also what is the strength of the concrete, is therereinforcement, post tensioning etc)ANSWERThe concrete is about 43 years old. It is 3000 psi. Concrete will be resurfaced and selfleveling grout poured on top of it at a thickness of 1.5" or may grout plate in where theHydro Dynamic Stands (HDS's) can be moved around on air pallets. If NASA decides to dothe later, the mast climbers will go directly into the concrete. The concrete inside thebuilding varies from 6' to 8'.17.QUESTIONVendor shall provide training manuals for operation and assembly of mast climbers. Vendorshall also provide training for operation of mast climbers. (The governing body of thepowered access industry (IPAF) has an international training course for users andinstallers, and issues Powered Access Licenses upon completion (similar to a driverslicense), is the training referred to for only users, or is there a requirement forInstaller Training.)ANSWERYes, there is a requirement for installer training. NASA plans on using these mastclimbers in several areas of building 4550 and there may be future use for them in otherplaces on the center.18.QUESTIONMast climbers shall be designed to a safety factor of 4 to 1 at a maximum load condition(Including tensile and shear negation on the anchor bolts?)ANSWERIf this is not covered in the ANSI/SIA standard, it remains a Government requirement.19.QUESTIONMast climber shall have a minimum load capacity of 5000 lbs evenly distributed overplatforms in the two tower configuration, and at maximum span length in the one towerconfiguration. (Is there a maximum point load requirement.)ANSWERMax point load is 300 pounds. 20.QUESTIONRemovable decking shall be level with secondary decking and main platform decking (Pleaseadvise if there would be a desire for the secondary decking to be electrically extendedor retracted. This is possible, and, depends on the answers to previous questions)ANSWERThis solution is acceptable but is not a requirement.21.QUESTIONAll safety fences shall comply with 29 CFR 1910.23 (e) (Is the mast climber system evergoing to be in use when no rocket body is present? If so, front handrails would berequired, similarly, if the mast climbers were to be used in a situation where the frontedge was more than 14 from a solid surface, i.e. rocket body, front handrails would berequired)ANSWERActually here at Marshall that distance is 12". We plan to install a life line system ifthis is ever the case.22.QUESTIONMast climbers shall have hard stops at the top and bottom of travel, in case of limitswitch failure (Does this mean mechanical stops)ANSWERYes23.QUESTIONHow do the dimensions of the rocket change and at what elevation?ANSWERThe only change in diameter of the first stage the aft skirt it goes from 215" at thebottom to around 152" at the top. The SRB stacks are around 146". The aft skirt isapprox. 91" tall. During test the bottom the aft skirt will be about 14 feet above thefloor.24.QUESTIONWhere/how do you want to access the platform?ANSWERThere should be gate locations shown on the drawings. These will need to be there so wecan access the platforms from the catwalks inside the building. at the higher levels. Ifyou would like to add additional to the platforms that would be fine.25.QUESTIONWe were told that we would anchor in to the floor, if we are then will we have drawingsof the concrete floor?ANSWERDrawing attached to the modification26.QUESTIONDoes the requirement call for the mast climber to work on the opposite side of the mast?.ANSWERNo, what we are asking is to be able to turn the mast around and use the climber in theconventional manner. The platforms would have to be disassembled from the configurationshown in the drawings.NASA QUESTION TO ALL VENDORS: How much of an impact would it be to have the mast tied atevery 48' instead of every 24'? Please submit this information with your offer.The due date for receipt of offers is extended to 7/18/2008.
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