Table 5.
Bending properties of CLT

CLT type	Panel type	Panel lay-up	Layer direction*	Specimen dimension (mm)	Span-depth ratio	Major direction
						MOE (GPa)	MOR (MPa)
Hybrid CLT(Wang et al., 2015)	-	pine-pine-pine	//-⊥-//	114(T)×197(W)×2,438(L)	20	9.7	35.4
	LSL	pine-LSL1)-pine	//-//-//			10.8	44.0
		LSL-pine-LSL	//-⊥-//			11.2	44.2
		LSL-LSL-LSL				11.6	48.2
Hybrid SPFs-LSL CLT(Davids et al., 2017)	-	SPFs-SPFs-SPFs	//-⊥-//	114(T)×406(W)×2,560(L)	20.4	7.3	40.7
	LSL	LSL2)-LSL-LSL				5.3	33.4
		LSL-SPFs-LSL				5.5	33.6
		SPFs-LSL-SPFs				7.0	50.1
Composite laminated panels(Niederwestberget al., 2018)	-	SPF-SPF-SPF-SPF-SPF	//-⊥-//-⊥-//	184(T)×195(W)×2,743(L)	13.6	8.0	110
	LSL	SPF-LSL-SPF-LSL-SPF3)	//-//-//-//-//			9.5	164.5
		LSL-SPF-LSL-SPF-LSL	//-//-//-//-//			11.6	205.4
		LSL-SPF-LSL-SPF-LSL	//-⊥-//-⊥-//			8.9	106.3
Hybrid SPFs-LVL CLT(Wang et al., 2017)	-	SPF-SPF-SPF	//-⊥-//	114(T)×89(W)×2,000(L)	16.4	7.9	28.6
	LVL	SPF-LVL4)-SPF				7.2	25.7
		LVL-SPF-LVL				9.3	30.1
Korean Larch CLT(Song and Hong, 2018)	Plywood	L-L-L5)	//-⊥-//	81(T)×170(W)×1,700(L)	18.5	9.2-10.1	43.9-47.1
Korean Pine CLT(Pang et al., 2021)		PL-PL-PL6)	//-⊥-//	90(T)×300(W)×2,900(L)	30	8.0-8.8	28.2-30.1
Ply-lam(Fujimoto et al., 2021)	Plywood	C-P-C-P-C7)	//-//-//-//-//	150(T)×300(W)×3,450(L)	21	12.3	49.0
CLT with plywood(Choi et al., 2018)		D-P-D-P-D8)	//-//-//-//-//	40(T)×40(W)×600(L)	13	10.8	67.8
		D-P-D-P-D9)				8.6	43.9
Ply-lam CLT(Choi et al., 2021)		L-P-L-P-L10)	//-//-//-//-//	75(T)×300(W)×2,400(L)	29	15.1	61.6
		D-P-D-P-D11)	//-//-//-//-//			13.0	65.5
Tropical Hybrid CLT(Nurdiansyah et al., 2020)	Bamboo laminated board	L-B.S-L12)	//-//-//	54(T)×305(W)×1,260(L)	19.6	21.83	39.41
Bamboo-wood composite cross laminated timber(Li et al., 2021)	Bamboo woven panel(BMCP)	L-L-L	//-⊥-//	51(T)×145(W)×1,630(L)	30	10.28	47.3
		L-BMCP-L13)	//-//-//			9.6	45.0
		BMCP-L-BMCP	//-⊥-//			6.27	31.3

// and ⊥ represent the parallel and perpendicular to the majoir strength direction of CLT, Hybrid CLT, composite CLT
  LSL was made from aspen poplar (Populus tremuloides) strand, 1.5E grade
  LSL grade; 1.35E (MOE: 9.16 kN/mm², density: 0.71 g/cm³)
  LSL properties; 9.5 kN/mm², 41.7 N/mm², density: 0.64 g/cm³
  SPF; shear modulus 84.92 N/mm², shear strength 1.41 N/mm² LVL was made from douglas fir (pseudotsuga menziesii) veneer, 2.0E grade (shear modulus 47.88 N/mm², shear strength 1.07 N/mm²)
  L; korean larch (Larix kaempferi Carr.), outer tension laminae: 13 kN/mm², middle laminae: 7-9 kN/mm², outer compression laminae: 11kN/mm²
  PL; korean pine (Pinus koraiensis) (MOE: 8-9 kN/mm²)
  C; japanese cypress lamina, outer layer 11 kN/mm², inner layer 9 kN/mm², P; korean larch (larix kaempferi) plywood (major direction–MOE 10.9 kN/mm², MOR 44.1 N/mm², minor direction–MOE 5.19 kN/mm², MOR 18.7 N/mm²)
  D; douglas fir lamina thickness: 9 mm, P; plywood: thickness 6 mm, korean larch veneer
  D; douglas fir lamina thickness: 6 mm, P; plywood: thickness 9 mm, korean larch veneer
L; larch lamina (outer 11 kN/mm², inner 9 kN/mm²), P; korean larch plywood. thickness 15 mm, density 0.5 g/cm³, MOR 42.8 N/mm², MOE 7.1 kN/mm²
D; douglas fir lamina (outer 12-13 kN/mm², inner 9-10 kN/mm²), P; korean larch plywood. thickness 15 mm, density 0.5 g/cm³, MOR 42.8 N/mm², MOE 7.1 kN/mm²
L; Acacia mangium Willd, density 0.37 g/cm³, MOR 15.3 N/mm², MOE 9.98 kN/mm², B.S; Bamboo solid board, density 0.55 g/cm³, MOR 22.5 N/mm², MOE 18.49 kN/mm²
L; hem-fir (Tsuga heterophylla (Raf.) Sarg×Abies amabilis (Dougl.) Forbes) density 0.43 g/cm³, MOE 11.8 kN/mm², MOR 69.5 N/mm² BMCP; Bamboo woven panel, density 0.79 g/cm³, MOE 7.6 kN/mm², MOR 56.6 N/mm²