PROJECT : 16" CROSSING #2 - PIPE DATA DOCUMENT TITLE: BY: AHF DOCUMENT NO. : DATE: 09.04.15 1. INPUT Outside diameter steel pipe OD:= 16 in Concrete coat thickness tco:= 25 mm Nominal steel wall thickness ts:= 12.7mm Concrete coat density ρcon:= 3043 kg m Pipe joint length L j := 12.2m Sea water density ρsea:= 1025 kg m Steel density ρs:= 7850 kg m Marine growth thickness tm:= 0 mm Anti-corr.coat thickness tce:= 4 mm Marine growth density ρm:= 1200 kg m Anti-corr.coat density ρce:= 1280 kg m Cut back length of field joint CB:= 0.6m Steel loss due to corrosion (assump.) tcorr:= 0.25 mm Field joint (infill) density ρfj:= 1025 kg m Fluid content density ρc:= 1025 kg m Air density ρa:= 1 kg m Density of combined concrete & field joint coat 2. CALCULATION Inside diameter of steel Diameter anti-corr coating Diameter concrete coating Diameter marine growth Total Outside Diameter Bouyancy L j CB CB ρconfj:= ρcon + ρfj ρconfj = 2943.8m 3 kg L j L j Di:= [ OD 2( ts tcorr) ] Di = 0.38m ODce:= ( OD + 2tce) ODce= 0.41 m ODceco:= ( OD + 2tce+ 2tco) ODceco= 0.46 m ODcecoM:= ( OD + 2tce+ 2tco + 2tM) ODcecoM = 0.46 m ODtotal:= ODcecoM ODtotal = 0.46 m π Fb:= 4 ODtotal)2 ρsea Fb = 173.62m kg π Steel area Ast:= ( OD) 2 Di 2 Mass of steel (in air) Mst:= Astρs Mst= 120.96m 1 kg 4 π Anti-corr coat area Ace:= ( 4 ODce2 OD 2 ) Mass of anti-corr (in air) Mce:= Ace ρce Mce = 6.6m 1 kg ( ) π Conc coat area Ac:= 4 ODceco2 ODce 2 Mass of conc. (in air) Mc:= Acρcon Mc= 105.02m 1 kg ( ) π Mar.growth area Am:= 4 ODcecoM2 ODceco 2 Mass of mar.growth Mm:= AmρM Mm = 0m 1 kg (in air) π Pipe bore area Abore:= ( ) 4 Di2 Mass of fluid content Mcont:= Abore ρc Mcont = 117.17m 1 kg in inside pipe Mass of air in inside pipe Mair:= Abore ρa Mair= 0.11m 1 kg MASS IN-AIR Mass of coated pipe (in air, and air in inside pipe) M_in_air:= ( Mst+ Mce + Mc+ Mm) M_in_air = 232.57m 1 kg MASS IN-WATER (SUBMERGED) Mass of coated pipe (in water, and air in inside pipe) Mass of coated pipe (in water, and flooded in inside pipe) M_in_water_empty:= ( Mst+ Mce+ Mc+ Mm + Mair) Fb M_in_water_empty= 59.07m 1 kg M_in_water_flooded:= ( Mst+ Mce+ Mc+ Mm + Mcont) Fb M_in_water_flooded = 176.12m 1 kg Pipe data-mass.xmcd 1 of 1