ASTM D174-25 Specification for Burlap Saturated with Bituminous Substances for Use in Waterproofing (Withdrawn 1938)

BURLAP STANDARD SPECIFICATIONS

F'OR

SATURATED WITH BITUMINOUS SUBSTANCES
FOR USE IN WATERPROOFING1

Serial Designation: D 174- 25

These specifications are issued under the fixed designation D 174; the final
number indicates the year of original adoption as standard or, in the case of revision,
the year of last revision.

Issuao As TnNt'ATtVE, 1923; AooPTRD IN AMENDBD Fonr, 1925.

1. These specifications cover bituminized jute fabric, composed Scope.
of burlap waterproofed with either asphalt or coal~tar pitch, as speci~

fied by the purchaser, for usc in the membrane system of waterproofing.

MANUFACTURE

2. In the process of manufacture. the dry burlap shall be Mnte.rial.
thoroughly and uniformly waterproofed with an asphaltic or coa.J~tar
pitch saturant at a temperature and speed which will not injure the
fabric. This shaH be accomplished by passing t.hc fabric through the
saturant and then calendering it in the presence of heat, whereupon it
shall be cooled and wound into rolls.

PHYSICAL PROPERTIES

J. The fabricated bituminized burlap shall confonn to the fol- Fabricated
Bltumlnlud
lowing requirements: Burlap.

(a) The width shall be not less than 30 in. nor more than 38 in.

(b) The gross weight per roll shall fall within the range of 35 to

80 lb. .

(c;) The wrapping material and mandril shall not weigh more

than 2.5 lb. per roll.

(d) The average net weight per square yard shall not be less than

20 oz.

(e) The detached comminuted surfacing per 100 sq. ft. shall not

weigh more than 1 lb.

U) The moisture content based on the net weight shall not be

more than 1 per cent.

'Under the etanoC the A.S.T.M. Committee D-8 on Bituminous Waterproofing nnd Roofin11 Mat.,rillls.

(733)

734 SPECIFICATIONS FOR BURLAP l'OR WATERPROOFING

Desaturated (g) The average strength at 70° F. (21.1 ° C.) measured length-
Burlap. wise of the roll (that is, in the direction of the warp) shall not be less
than 70 lb.1

(h) The average strength at 70° F. (21.1 ° C.) measured crosswise

of the roll (that is, in the direction of th~ filling) shall not be less than
50 lb.l

(i) The pliability at 32° F. (0° C.) shall not be less than 10.
(j) ':('he average loss on heating (exclusive of moisture) shall not
be more than 4 per cent with asphalt-saturated fabrics.
(k) The weight of the saturant contained in the fabricated
material shall not be less than twice the weight of the moisture-free
fabric in the same area.
4. The desaturated burlap shall conform to the following require-
ments:

(a) The average dry weight shall not be less than 7! oz. per

sq. yd.
(b) The ash based on the dry weight of the fabric shall not be

more than 3 per cent.
(c) The fabric shall be composed of not less than 100 per cent

jute and manila fibers.

Workman· WORKMANSHIP AND FINISH
ship and
Finish. 5. The finished material shall be free from visible external defects
such as ragged or untrue edges, breaks, rents or cracks.

6. The rneshes of the fabric shall not be completely closed or
sealed by the process of saturation, but there shall be sufficient porosity
maintained to allow successive mappings of the plying cement to seep
through.

7. The selvage shall not measure over l 6 in.

8. The roll shall be capable of being unrolled easily at atmos-
pheric temperatures above 50° F. (10° C.) without sticking together
in such a manner as to injure the fabric.

9. The surface of the fabric shall not be coated or covered with
talc or other substances which would tend to interfere with the adhe-
sion between the fabric and the plying cement. The use of silica or
wood flour will be permitted.

10. The surface shall be uniformly smooth and free from irregulari-
ties, folds or knots.

I The committee recognizes the advisability of including a requirement relative to the percentage
elongation before rupture, but in the absence of any reliable method of test1 such requirement cannOt
be stated at the present time.

SERIAL DESIGNATION: D 174-25 735

PACKING

11. The rolls of treated burlap shall be wound on wooden 2 by Packing.
2--in. mandrils extending 2 to 4 in. beyond the ends of the roll. They
shall be securely tied or wrapped in a manner which will prevent
unrolling in transit.

SAMPLING AND TESTING

12. The material shall be sampled and the properties enumerated Sampling and
in these specifications shall be determined in accordance with the Testing.
Standard Methods of Testing Felted and Woven Fabrics Saturated
with Bituminous Substances for Use in Waterproofing and Roofing
(Serial Designation: D 146) of the American Society for Testing
Materials .1

INSPECTION

13. Inspection of material shall be made as agreed upon by the Inspection.
purchaser and seller as part of the purchase contract.

1 Sec p. 769.