Floating buoyancy calculation for rafts made with capped tubes at the ends

The app returns the buoyancy thrust of a raft made with N pipes with length L

Pipe mass density	r_t	(Kg/m³)
Mass density of pipe fill-up fluid	r_aria	(Kg/m³)
Mass density of water	r_h2o	(Kg/m³)
Number of pipes in the raft	N	( )
Pipe length	L	(m)
Pipe nominal diameter	DN	(mm)
External pipe radius	R_e	(mm)
Pipe thickness	e	(mm)
SDR	SDR
Pipe internal diameter	D_i	(mm)
Pipe internal radius	R_i	(mm)
Raft sink	a	(mm)
Distance of water level from pipe center	a₁	(mm)
Load on raft	P_e	(Kg)

			UNIT	TOTAL
Pipe volume	V_t	m³
Pipe weight	P_t	Kgp
Unit volume of internal fluid	V_aria	m³
Unit weight of internal fluid	P_aria	Kgp
Total load on raft	P_tot	Kgp
Submerged pipe volume	V_i	m³
Buoyancy thrust	S_g	Kgp

since	Sg		Ptot	the buoyancy condition	« »