Iranian Standard Table

Iranian National Standard No. 3885-1 for plastic polymeric water proofing (BPP)

Row	Specification			One layer (polyester)		Two layer (tissue and polyester)		Test method**
				COLD	TT*	COLD	TT*
1	At least rise in long percentage		Longitudinal	30	30	25	25	3882
			Traverse	30	30	25	25
2	At least tensile strength on the maximum power point (Kg/5cm)		Longitudinal	50	50	40	40	3882
			Traverse	40	40	30	30
3	At least resistance to tear (Kgf)		Longitudinal	10	10	12	12	3863
			Traverse	10	10	12	12
4	Water absorption in 28 days		Maximum water absorption (percentage)	1				3879
			Maximum lighting weight of water (percentage)	1
5	Maximum flexibility in the cold * C			-5	zero	-5	zero	3881
6	At least stability against heat * C			100	120	100	120	3862
7	At least dimension stability against heat (percentage)		Longitudinal	± 0.6	± 0.7	± 0.2	± 0.2	3890
			Traverse	± 0.5	± 0.5	± 0.2	± 0.2
8	Resistance to UV		Maximum drop in tensile strength * C	10				3875
			Maximum drop in tensile strength (percentage)	10
9	Thermal ablation in the air		Maximum drop in temperature flexibility * C	10				3876
			Maximum drop in tensile strength (percentage)	10
10	At least water permeability (Kpa)			60				3861
11	Thickness (millimeter)			4 ± 0.2				3878
12	Width (meter)			1 ± 0.01				3878
13	Mass per unit area (kg/m2)			4.1 ± 0.2				3878
14	Physical characteristics			According to 5-3				3885-1
15	Marking			According to 8				3885-1

* Temperate and tropical regions.
** Based on iranian national standard.