N6843830623S50 SPECIFICATIONS.pdf

Specification for Stackable Scaffolding Storage Boxes 2 March 2023

1. Stackable Scaffolding Storage Boxes (One Set - with One top Box and One Bottom Box) shall be manufactured as per the attached set of drawings. Any exceptions to the design drawings shall be provided in writing by the contractor, and approved by the government (prior to the contractor making design changes, and manufacturing the boxes). The boxes shall be provided will the following minimal capabilities/features:

a. Forklift slots/tubes (set of two per box)

b. Load tested pad eyes

c. Welded seams

d. Bolted hardware, including locking nuts and 3/8” grade 8 bolts (1 thread required past nut)

e. Stackable boxes (up to two boxes total) for storage

f. Aluminum panels, with steel square tubes, angle irons, support braces, pocket separator supports, doubler plates and flat stocks, etc. with steel frame work construction

g. Grooved base (for stacking purposed), with a 4” x ½” deep grove (in each forklift slot/tube)

h. 10,000 lbs (each box) expected load capability

i. All carbon steel components shall be cleaned and coated with a two part durable epoxy. All aluminum shall be uncoated.

j. Dissimilar materials shall be separated (as deemed appropriate)

2. Lifting and Handling – Each box shall be equipped with four gross weight lifting pads, mounted on the top of the unit, correctly spaced for even and level lifting by a single crane hook.

3. Painting - All surfaces shall be painted in conformance with standard practices and good workmanship.

Painting shall result in a highly wear-resistant finish, which guarantees continued protection to the surfaces covered against the specified environment under all service conditions. Lead base or chromium base paints are prohibited.

4. Identification Plate - An identification plate/nameplate shall be affixed to each box showing the manufacturer’s name, year of manufacture, and any other pertinent information.

5. Contractor Stackable Scaffolding Storage Design - The designated equipment shall be designed by a qualified engineer, and meet the performance criteria contained in this specification and per the government provided drawings. It shall be designed to allow two boxes to be stacked on each other, and to withstand salt and a dust laden outdoor marine industrial environment, subject to high winds, driven rain, sleet and snow. The design drawings shall have sufficient details for proper evaluation by the government. Allow for 14 calendar days for review by the government of the submittal. No fabrication or manufacturing shall commence until the design is approved and comments addressed.

6. Load Test Of Lifting Pads Eyes And Non-Destructive Test Of Load Bearing Welds - The contractor shall perform these tests prior to shipping the equipment to the government. Each lifting pad eye, while attached to the top of the specified equipment shall undergo a load test for a minimum of 10 minutes without damage or deformation. The magnitude of the load test shall be based on a 200-210% increase above the “design load”. Acceptance shall be based on no visible damage or permanent distortion following the proof test. Damage and permanent distortion is defined as cracks, tears, mushrooming of load-bearing areas, bent or twisted pads or structure etc. On each lifting pad eye (or immediately adjacent to it) the lifting pad design load, 200% test load and test date shall be stencil or labeled in 1-inch high letters. A Non-Destructive Test shall be made on each of the lifting pads (after the load test if each lifting pad is performed). This shall include magnetic particle or liquid penetrant examination of the load bearing welds and lifting pads. Welds and materials shall meet the acceptance criteria in Mil-Std-2035A Class 1.

All “design load” calculations shall be based on the maximum weight including the specified equipment.

7. Lifting Pad Certification and Non-Destructive (NDT) Report - Concurrent with delivery of the equipment, the contractor shall provide a signed, written certification of compliance to the lifting pad and NDT testing requirements as outlined in this specification. The Lifting Pad Certification statement shall include that all lifting pads have been designed in accordance with design criteria and that each lifting pad has successfully passed a 200-210% load test. The NDT report shall show the results of the magnetic particle or liquid penetrant examination of each load bearing weld and lifting pad (following the load test).

Failure to provide this certification and NDT report could result in rejection of this equipment, because of failure to comply with the terms of the contract.