The structure is called “CUBOID 3” and is developed to have an alternative accommodation option at the Afriski Mountain Resort in Lesotho. This structure is highly insulation and can also be used anywhere else other than Lesotho
What was the brief to the architect?
The Consort 13 (a group of 4 friends), have requested Eugene Barnard to design a small but comfortable accommodation without a kitchen as the patronne are required to make use of the Resort restaurant.
The steel construction was considered from the outset as we needed to uplift the unit and transport it to Lesotho. The exterior Chromadek and rusted steel were considered to reduce future maintenance cost.
Give a brief description of the structural framing. What type of sections were used (e.g. hollow, cellular, I beams etc) and why?
The steel construction was designed as follows; 100x100x3 square hollow section as structural columns with sliding adjustable/ extendable legs to accommodate earth levels. 200x75x20x2 lip channel floor and roof ring beams were used which created the width to match the Neopor insulation and the height to accommodate the floor and roof lip channel (100x75x20x2) support structures
Give a brief description of the cladding process (complexity, difficulty, innovation etc)
Charcoal 490 wide Chromadek pans were used in a vertical cladding and the contracting rusted special pattern designed/bent 1,2 cold rolled steel was used alternatively. This was considered in lieu of timber cladding
Were there any challenges in the fabrication of the project from the engineer’s design – if yes, please tell? Tell more about fabrication and erection process if it was complex, difficult, innovative etc.
Being the first project of this nature to me, it always posed a problem to work underneath or at roof level of the specially built 6700×3200 steel frame. With the help of a friend and landlord, Gerrie van Belk um from Travel tops, we rigged a small overhead crawler beam designed by DNS Consulting Engineers with a Block and Tackle pulley to assist in lifting and moving the steel structures into place. The steel frames had to be bolted together before the cladding could commence. Since completed, the 3 separate sections can now be unbolted and loaded onto a truck to transport
What is special/ unusual/ innovative/ aesthetic about the steelwork/cladding in this project?
We designed this shaped 1.2 cold rolled steel sheet with various heights and widths to imitate timber which was initially considered. We believe we achieved a better-looking finish after we forced the rusting process resulting in low to no maintenance
How did the project team work together (e.g. contractor involved early, challenges/ ease of communication etc.)
All contractors and professionals were carefully selected from past experiences. This eliminated confusion resulting in good communication and deliverables were met
|Completion date of steelwork||May 2018|
|Completion date of full project||Oct 2018|
|Tons of structural steel used||1.785 tons|
|Structural profiles used||100x100x3 corner columns, 95x95x5 adjustable corner legs, 200x75x20x2 lipchannel ring beams, 75x50x20x2 roof beams, 100x75x20x2 support columns, 125x75x20x2 floor joist,
125x75x2 rainwater pipes
|SA content – if this is an export project||All RSA content|
|LSFB / LIGHT STEEL FRAME BUILDING WORK|
|Completion date of LSFB work||SA Pine infull work|
|Type of cladding||490 Chromadek Pan cladding 1,2 Cold rolled rusted sheets
OSB board on the interior
|Completion date of cladding||31 August 2018|
|Cladding profile/ type used||490 Chromadek Pan cladding 1,2 Cold rolled rusted sheets|
|Cladding area/ coverage and tonnage||50 sqm -490 Chromadek pan cladding =0.200 ton 32 sqm – 1.2 Cold rolled steel = 0.434 ton|
|Cost of cladding||490 Chromadek pans = R 5 360.95
1.2 Cold rolled steel = R 18 346.00
|Client/ Developer||Consort 13 partnership|
|Structural Engineer||DNS Engineers|
|Main Contractor||Zestiblox cc|
|Steelwork Contractor||Geldenhuys Steel|
|Steel Erector||Geldenhuys Steel|
|Cladding Contractor||Zestiblox cc|
|Roofing and Cladding||Global Roofing Solutions|
|Site rigger||GR Travel tops|
|Corrosion Protection Paintwork Contractor||Geldenhuys Steel|