1.1.1 This specification shall be applied to the processing of HOWSOLPAN and related accessories to be used for the finishing of non-load bearing interior and façade.
1.1.2 Major materials shall comply with the K.S. code and others can be used under the supervisor’s approval.
1.2 Related Documents
1.2.1 Following documents shall be applied for the items that are not described on this specification.
(1) Drawings, Construction Specification, Project Statements, and Questions and Answers
(2) Building Code, Construction Technology Management Act, Framework Act on the Construction Industry, Labor Standard Act, Industrial Safety and Health Acts, Laws of Environment Preservation, Industrial Standardization Acts, and other laws and ordinances for architectural construction
(3) General Condition of Construction Contract, Bidding Instruction, Cost Estimation Rules according to Cost Accounting, and other rules and regulations in relation to the contract
1.3 Applied Standard
1.3.1 Following standards shall be applied
- Korean Industrial Standard (KS) : KS F 4737 Aluminum Composite Panels
1.4 Submittal
Documents in this article shall be submitted in accordance with "G02020 Official Business Administration and Submittals of General Provision G00000"
1.4.1 Construction Plan
(1) Progress Schedule of Installation in detail
(2) Inspection Schedule of Construction Status
(3) Quality Control Plan (Notes on construction order and methods, weather condition, material management, working environment, cleaning and protection, repair, inspection & test plan, warranty, etc. )
1.4.2 Shop Drawings
(1) Shop drawings of uneven parts, bending parts, panel joint details, thickness and delimits, panel shedding, metal fixing connector, etc.
(2) Drawings in detail of parts requested by inspector
1.4.3 Product Data
Documents and characteristics related to products, as well as manufacturer's installation manual explaining installation method
1.4.4 Sample
Approval should be obtained from the supervisor based on three samples whose size is 30cm X 30 cm
1.4.5 Certificate
Construction shall be further proceeded after having supervisor’s approval. Construction Conformity Form should be submitted prior to the approval.
1.5 Quality Assurance
1.5.1 Regulation on Constructor
Constructor should be qualified by the supervisor before the construction starts. The constructor should hold at least building structure assembling license holder of specialized construction industry that is regulated by the Framework Act on the Construction Industry.
1.5.2 Trial Installation
(1) The contractor shall install each type (of structure) at the place where the supervisor has allocated.
(2) If approved by the supervisor, the trial installation shall be considered as to be a part of the construction.
1.5.3 Consultation prior to the Construction
(1) Clauses related to the preparation works, construction conditions, inspection procedures, repair and maintenance should be taken into account. Negotiation takes place on process, structure, and installation in detail with the involved parties, it should be careful not to delay the progress of the whole construction process.
(2) Coverage of the construction, duration, provided construction materials, equipments, lease contract of tools
(3) On-site material incoming terms, lifting conditions, local stocking, payment terms of on-site electricity usage and water consumption
(4) Priority set-up of waterproofing, plastering, interior finishing work and electricity and facility work
(5) Prior consultation on particular subject related to the construction
1.6 Conveyance, Custody and Handling
1.6.1 Conveyance
(1) Panels should be transported in the manner that no deformation takes place.
(2) Once unloaded, transport distance should be minimized when panels are transported from the processing shop or from the storage warehouse to the construction site.
(3) When transport panels to the construction site, maximal precaution should be taken in order not to cause damage. Specialized equipments shall be used such as hoist, hand pallet car, etc
1.6.2 Custody and Handling
(1) It is preferable that panels are kept at indoors. If not possible, they should be at flat and clean places near the construction site. Panels shall be in an elevated position so as not to be contaminated by mud splashing or by corpus alienum.
(2) Panels should be stored on a horizontally reinforced support, such as woods, to prevent from distortion and damage.
(3) When handling, care should be taken for not to cause damage, especially on corners.
1.7 On-site Checking
1.7.1 Prior to the Construction
(1) When carried in, panels should be checked their types, sizes, and shape, and supervisor’s visa should be obtained.
(2) Random sampling shall be done according to the norm KS A 3151 from the incoming lots. The samples will be checked their conformity to the appropriate norm.
1.7.2 Post-Construction
Once finished the installation, supervisor’s approbation shall be sought whether the installation method, quantity, bounds do meet the standing contract and relative drawings and documents.
1.8 Construction Schedule
Special cases of the panels installation such as pre-processing should be done according to the standard construction specification and to the drawings. As for the construction plan, construction schedule can be applicable instead.
Specification, Technical
2.1 Product Specification
2.1.1 Panels should be HOWSOLPAN or equivalent that meet the KS standards.
2.1.2 Thickness tolerance should fall within ±0.2mm.
2.1.3 Panels should be flat, free from any default or defect of usage. They should be made of material with extra durability, and should not be altered in any weather condition.
2.1.4 If not specified, panels whose thickness is 4-mm or more should be employed. Panels should be aluminum composite ones composed of polyethylene core sandwiched between two aluminum sheets of 0.5mm-thick.
2.2 Surface Properties
2.2.1 Outer surface coating should be coated more than two times with industrial polymeric fluorine paint containing at least 70% of KYNAR®500 polymer.
2.2.2 Selected color(s) should be approved by the supervisor.
2.2.3 Appearance
Should be free from any defect including scratch and/or blister.
2.2.4 Color and Uniformity
When randomly checked by exposing perpendicularly to the uniform light source, color uniformity should fall with the pre-determined range.
2.2.5 Gloss
Gloss should be between 20 and 35 when measured with a glossmeter at an angle of 60 degrees.
2.2.6 Pencil Hardness
No noticeable anomaly can be observed when tested with H type pencil.
2.2.7 Adhesion
No delamination when tested according to the ASTM D 3359 1/16” Cross Cut
2.2.8 Impact Resistance
No crack or abnormality when tested according to the ASTM D 2794
2.2.9 Abrasion Resistance
No visible defect when tested according to the ASTM D 968 Falling Sand test, 70 liter/min.
2.2.10 Salt Spray Test
No surface alteration after 3000 hrs at 35°C and 5%-salt water according to the ASTM B 117
2.2.11 Moisture Resistance
No surface alteration after 3000 hrs at 35°C and 100%RH according to the ASTM D 2247
2.2.12 Acid Resistivity
No surface alteration after 78 hours in 10% HCl according to the ASTM 1308
2.2.13 Alkaline Resistivity
No surface alteration after 1 hour in 70% NaOH according to the ASTM D 1308
2.2.14 Anti-Pollution Test
No surface alteration after 30 minutes exposure to 70% HNO3 vapor according to the AAMA 2605.
Subsidiary Materials
3.1 Aluminum Angle Joiner
3.1.1 Extruded aluminum alloy A6063/T5 or equivalent, having stamped KDS6029KS inscription
3.2 Anchor Fastener
3.2.1 Material and specification of anchor fastener to which panel units to be attached is as follows :
① Material : Steel (SS-41) specified in KS D 3503 with two layers of anticorrosive paint
② Specification: size and thickness should conform as specified in the drawings.
3.3 Anchor Bolts and Nuts
3.3.1 Galvanized (thickness, at least 7 microns) SS-41 steel conform to the KS D 1002. Sizes and strength should respectively comply with drawings, and structural calculation.
3.4 SCREW
3.4.1 All screws shall be made of galvanized steel SS-41 conforming to the KS D 1002.
3.5 RIVET
3.5.1 All rivets should be made of aluminum alloy A1050V.
3.6 JOINT RIVET
3.6.1 All joining of panel unit to the joiner should be riveted with aluminum rivets
Sealants
4.1 Sealants
4.1.1 Sealants are applied to prevent corrosion at joining points of different metals, for example, aluminum and steel. They should have good tensile property, high adhesion and water tightness. Sealants should not cause corrosion of aluminum and be conform to the KS F 4910-5.
1) in-place drying
2) hardness
3) tensile property of adhesive joint
4) peeling strength
5) recovery from tensile deformation
6) contaminating property
7) slump
8) pot life
4.2
Samples should be submitted prior to use and supervisor’s approval is mandatory.
Processing
5.1 Cutting and Fabricating
5.1.1. Grooving process shall be primarily done under the supervisor’s indication on the basis of processing method fixed by our company. The material, size, and thickness of all products should conform, within industrially admitted tolerance, to those specified in the approved construction specification and drawings.
5.1.2. Angles of cutting and fabrication should be either 90 or 45 degrees, and the tolerance should fall within ±2mm in lengthwise.
5.2 Panel Unit
5.2.1 When manufacturing or assembling unit panels, all subsidiary parts should be assembled in a factory and inspected prior to the expedition. This is to reduce maximum errors/mistakes that may occur if done on-site.
Inspection
6.1 Submission of Original Samples
6.1.1 Prior to the processing, each 200mm of original samples with description of subsidiary materials – such as thickness, surface treatment, color, and tolerance etc – should be submitted and approbation from the supervisor should be obtained.
The supervisor will keep the submitted sample as a case specimen.
6.1.2 Inspection points
Products with distortion, bad surface treatment, improper joint, and bad workmanship shall be rejected, and their consignment shall be denied.
Other Materials
7.1 Unspecified Products and Materials
7.1.1 Products that are not specified in the drawings and in the specifications should be KS qualified ones or of better quality.
Jointing and Fixing
8.1 Workmanship and Materials
8.1.1 Materials should be as specified in the drawings. Operations should be carried out by skilled technicians according to the official drawings.
Vertical/horizontal check should be done carefully so as to fit to the structure.
8.2 Fixing
After vertical/horizontal-check having carefully done, fastener and anchor bolt shall be fixed by tightening bolt and nut. Screw joints should be treated against unscrewing. .
8.3
Joints clearance should be constant; reinforcements in joint should not be movable.
SEALANT
9.1 Cleaning of Joints
9.1.1 Since moisture, dusts, foreign debris, oils, and/or rust reduce the adhesion, joints should be free from such material and sufficiently dry.
9.2 Joint Filler
9.2.1 Fillers are inserted into the joints to adjust the depth of joint to be sealed with silicone sealant.
9.2.2 Shape of fillers shall be round, and their diameter slightly larger than the joint gap.
9.3 MASKING TAPE
9.3.1 Masking tapes shall be placed to protect panel surface adjacent to the joint from being contaminated by silicone sealant, and also to embellish the both ends of joint line. Tapes shall not be altered by direct sunrays and/or by solvents, and shall not leave adhesives on the substrate.
9.4 Gap Filling with Silicone
9.4.1 Gun should move with constant speed and pressure at an inclined angle. Dispensed silicone will be slightly thicker at upper end of joints than other place. Stop dispensing silicone at about 20cm before the joint end; change the direction till join the both dispensed ends.
9.5 Masking Tape Removal
9.5.1 When finished, take off masking tape carefully so as not to take off coated paint of the panel.
9.6 Hardening
9.6.1 Care should be taken for not to damage, pollute or stick debris the joints and allow three (3) days of hardening.
9.7 Cleaning
9.7.1 Once finished the installation, cleaning the panels and removal of the protective film should be done within six (6) days.
