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MJ-Gerüst systems compared head to head
Every pair of MJ-Gerüst systems in the ScaFix catalogue: which bay lengths and depths they share, which only one of them has, and what the planning engine counts for each on the same example house, parts group by parts group.
By Ole Emil Frikstad Urstad · How the numbers are computed ·
How do the MJ-Gerüst systems differ?
ScaFix has 5 MJ-Gerüst systems: MJ UNI 70/100, MJ UNI-CONNECT, MJ COMBI, MJ UNI TOP 65 and MJ OPTIMA. On the same example house (11.4 m × 5.3 m), MJ UNI TOP 65 needs 288 parts and MJ COMBI 559. No bay length is offered by all 5 systems, so their bay grids differ.
Pair by pair: bay lengths and depths
Each pair of MJ-Gerüst systems, from the catalogue the engine plans with. «Only in» lists the bay lengths one system has and the other lacks; the last column is the parts total of each on the example house.
| Pair | Type | Shared bay lengths | Only in the first | Only in the second | Shared depths | Parts on the house |
|---|---|---|---|---|---|---|
| MJ COMBI – MJ OPTIMA | Same type: Ringlock (rosette) | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.09 m, 0.73 m | 1.4 m, 1.04 m | – | – | 559 / 545 |
| MJ UNI 70/100 – MJ UNI TOP 65 | Same type: Frame | 3 m, 2.5 m, 2 m, 1.5 m | – | – | – | 292 / 288 |
| MJ UNI 70/100 – MJ UNI-CONNECT | Same type: Frame | – | 3 m, 2.5 m, 2 m, 1.5 m | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.09 m, 0.73 m | – | 292 / 312 |
| MJ UNI-CONNECT – MJ UNI TOP 65 | Same type: Frame | – | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.09 m, 0.73 m | 3 m, 2.5 m, 2 m, 1.5 m | – | 312 / 288 |
| MJ UNI-CONNECT – MJ COMBI | Different types: Frame / Ringlock (rosette) | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.09 m, 0.73 m | – | 1.4 m, 1.04 m | 0.73 m | 312 / 559 |
| MJ UNI-CONNECT – MJ OPTIMA | Different types: Frame / Ringlock (rosette) | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.09 m, 0.73 m | – | – | – | 312 / 545 |
| MJ UNI 70/100 – MJ COMBI | Different types: Frame / Ringlock (rosette) | – | 3 m, 2.5 m, 2 m, 1.5 m | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.4 m, 1.09 m, 1.04 m, 0.73 m | – | 292 / 559 |
| MJ UNI 70/100 – MJ OPTIMA | Different types: Frame / Ringlock (rosette) | – | 3 m, 2.5 m, 2 m, 1.5 m | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.09 m, 0.73 m | – | 292 / 545 |
| MJ COMBI – MJ UNI TOP 65 | Different types: Ringlock (rosette) / Frame | – | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.4 m, 1.09 m, 1.04 m, 0.73 m | 3 m, 2.5 m, 2 m, 1.5 m | – | 559 / 288 |
| MJ UNI TOP 65 – MJ OPTIMA | Different types: Frame / Ringlock (rosette) | – | 3 m, 2.5 m, 2 m, 1.5 m | 3.07 m, 2.57 m, 2.07 m, 1.57 m, 1.09 m, 0.73 m | – | 288 / 545 |
Parts group by group on the same house
| Parts group | MJ UNI 70/100 | MJ UNI-CONNECT | MJ COMBI | MJ UNI TOP 65 | MJ OPTIMA |
|---|---|---|---|---|---|
| Frames and standards | 60 | 60 | 120 | 60 | 120 |
| Decks | 32 | 32 | 33 | 32 | 33 |
| Guardrails | 52 | 48 | 96 | 48 | 96 |
| Toeboards | 32 | 32 | 32 | 32 | 32 |
| Diagonals | 8 | 12 | 8 | 8 | 16 |
| Ends | 8 | 8 | 8 | 8 | 8 |
| Wall ties and fittings | 60 | 80 | 66 | 60 | 44 |
| Base jacks and legs | 40 | 40 | 40 | 40 | 40 |
| Ledgers and beams | – | – | 156 | – | 156 |
| Bays on the long wall | 5 | 5 | 5 | 5 | 5 |
| Depth | 0.74 m | 0.73 m | 0.73 m | 0.65 m | 0.73 m |
| All parts | 292 | 312 | 559 | 288 | 545 |
Questions and answers
Can I mix parts from two MJ-Gerüst systems in ScaFix?
No. ScaFix plans each wall with one system’s own parts and never mixes systems in a parts list. Whether two systems of one maker may be combined on site is for MJ-Gerüst’s instructions to say. ScaFix is a planning aid, not a structural approval.
Why do the parts totals of the MJ-Gerüst systems differ?
A wall is filled with each system’s own bay lengths, so a shorter bay means more bays, standards and ledgers; the depth changes the transoms and decks, and frame systems count frames where modular systems count standards and ledgers. The totals say nothing about price or load class.
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