Charge Build-Up
Dead Charge Calculatrice
Use this calculatrice when the first job is to assemble permanent charge from real layers such as finishes, screed, slab, ceiling, services, et partition allowances before moving into poutre design.
Layer Entrees
A lighter floor setup avec finishes, services, et a modest allowance pour partitions.
Dead Charge Summary
Layer share of total
| Finishes | 0,80 kN/m^2 (15,5%) |
| Topping / screed | 0,60 kN/m^2 (11,7%) |
| Slab / deck self weight | 2,80 kN/m^2 (54,4%) |
| Ceiling allowance | 0,25 kN/m^2 (4,9%) |
| Services allowance | 0,20 kN/m^2 (3,9%) |
| Partitions allowance | 0,50 kN/m^2 (9,7%) |
Calculation Basis
Assumptions & Limits
- Entered layer values remain project hypotheses et do not replace a verified quantity takeoff.
- The page prepares charge entrees but does not apply full design combinations or code partial factors automatically.
- Changing tributary width, local peaks, or an uncertain charge path require a more detailed model.
Reference Basis
Reference Setups
| Best use | Permanent floor or roof load build-up before beam checks |
| Primary output | kN/m^2, kN/m, total member dead load, support reaction estimate |
| Typical handoff | Beam solver, support checks, load combinations |
| Model scope | Permanent load takeoff only; no partial factors or code combinations applied |
Notes techniques
- This page is strongest at the charge-takeoff stage, before the member response check begins.
- Treat partition et service allowances as project hypotheses. They can dominate the dead charge on lighter floor systems.
- If the supported area changes along the poutre, use more than one tributary width or split the member into charge zones instead of forcing one averaged value.
Calculation Method
- Area dead charge: g_k = g_finishes + g_topping + g_slab + g_ceiling + g_services + g_partitions. The calculatrice sums the entered permanent layers into one characteristic area charge.
- Line charge: w = g_k x b_tr. Area charge is converted into line charge through tributary width.
- Member charge: W = w L. The total unfactored member dead charge is useful pour early appui et framing studies.
Questions frequentes
- Should live charge be included here? No. This page is pour permanent actions only. Add imposed charge separately so dead et live components remain transparent before combinations are applied.
- Can I use the slab field pour acier deck or bois deck self weight? Yes. That field is the main structural self-weight slot. It can represent whichever primary deck or slab layer carries the build-up.
- Why is there a simple-appui reaction resultat on a dead-charge page? Because early framing work often needs a quick appui-charge estimate even before the full poutre model is opened.
Pages associees