Roofing Aggregates. • 1 inch round ballast for the one ply rubber roofs. • 3/4 inch round for special light weight rubber roofs. • 3/4 inch aggregate for the IRMA process. • 3/8 inch ( ASTM 1863 spec) for built up roofs. • 5/8 inch round for special applications. • We carry 3/8 inch spar (white marble) for built up roofs…
Ballast In roofing, ballast comes in the form of large stones, (typically river bottom stone ¾ in. to 1½ in. diameter, size No. 4 per ASTM D448 "Standard Sizes of Coarse Aggregate" or ASTMD7655/D7655M12 "Standard Classification for Size of Aggregate Used as Ballast for Membrane Roof Systems") orDetails
Aggregate used as surfacing for roof cov-erings and aggregate, gravel or stone used as ballast shall not be used on the roof of a building located in a hurricane-prone region as defined in Section 202, or on any other building with a mean roof height exceeding that permitted by Table 1504.8 based on the exposure category and basic wind speed
Description: 1.1 This classification defines the aggregate size designations and ranges in mechanical analyses for standard sizes of aggregate used as ballast for membrane roof systems. 1.2 The text of this classification references notes and footnotes which provide explanatory
Lucas Roofing ProductsSpecializing in blending/packaging roofing granules, 3M granules, Fire White, aggregate, ballast Manufacturing Tapered Edge, Perlite, Poliso, Fiberboard.1 (B)AGGREGATE GRADATION JM does not supply ballast materials; however, the following materials are approved for use with ballasted Specifications SE4B and SE6B Nominal 11 ...
AGGREGATE GRADATION TABLE except the passing the No 200 sieve shall not exceed 4 gravel crushed ... Crushed Stones Size 40 50 Mm 4 inch crushed ballast gradation Gradation No 1/2 inch 125 mm ... HEDRICK PRODUCTS ABC ABC-M Washed stone ranging from 3/4 -1 1/2 please see gradation breakdown for details Decorative Gravel Roofing Ballast...
The amount of ballast varies from 50 to 65 kg/m² (10 to 13 psf) in conventionally loose-laid, gravel stone ballasted single-ply assemblies. Ballast is assumed to be round, 38 mm (1.5 in.) or 64 mm (2.4 in.) smooth stone consisting of ballast gradation sizes #2 and #4, as specified in American Society for Testing and Materials (ASTM) D448.
2.1 Ballast In roofing, ballast comes in the form of large stones, (typically river bottom stone ¾ in. to 1½ in. diameter, size No. 4 per ASTM D448 "Standard Sizes of Coarse Aggregate" or ASTMD7655/D7655M-12 "Standard Classification for Size of Aggregate Used as Ballast for Membrane Roof Systems") or
The gravel used in built up roofing (what the roofing contractors were used to) was not the same as that used in a ballasted roof. For built up roofing, the gravel was generally .25 - .5 inches in diameter. The stones used in ballasted roofing are generally 1.5 - 2.5 inches in diameter and applied in a thicker layer.
Test results for gradation and physical properties will be provided but will not constitute acceptance of mat erial in the source of supply. Prior to the production of aggregates, the source of supply shall be cleared, grubbed and stripped of overburden to an extent and in a manner satisfactory to the Engineer. 3.2 Aggregate Requirements
The gravel in a ballasted roof helps absorb heat, preventing the sun from heating the roof materials below and making the roof more energy-efficient. (Sources: WATERPROOF! Magazine and Roofing Southwest.) Although single-ply roofs inherently have sun-protective qualities, ballast provides an extra layer of protection from UV rays.
01-03-2016· Aggregate size distribution (gradation) and particle shape are two major considerations in ballasted railroad track design. Superior ballast aggregate shape properties such as by an angular crushed stone have been proven to be critical for ballast strength and stability.
Discount Roofing Granules and Aggregates. Roofing Granules from white crushed marble and more. 1-800-474-7570 [email protected]. Log-In Log-Out. About Us Contact Us FAQ Manufacturers Products Shipping.
aggregate ballast in gradation for roofing. SECTION 20110 BALLAST AND WALKWAY AGGREGATE. Sep 30 2011 0183 32 D Unacceptable ballast/walkway aggregate parent materials Carbonates sedimentary rock alluvium sandstone limestone and slag E Obtain ballast/walkway aggregate material from one quarry source throughout the duration of the Contract 202 ...
is also critical for selection of ballast material. Small aggregate ballast not designed under ANSI/SPRI RP-4 can lead to aggregate ballast blow off during tornadoes and hurricanes but is less likely during other storms. Aggregate ballast blown off the roof can break windows and skylights and damage other building surfaces. For
Sieve analysis of Aggregates of Dense Bituminous Macadam (DBM) (Grading – II (Nominal maximum aggregate size (26.5 mm))), Grain Size Analysis of Aggregates – Particle Size Distribution Test. Test for grain size analysis or sieve analysis of aggregates are done to determine its particle size distribution, fineness modulus, effective size and uniformity coefficient.
The gravel used in built up roofing what the roofing contractors were used to was not the same as that used in a ballasted roof. For built up roofing, the gravel was generally .25 - .5 inches in diameter. The stones used in ballasted roofing are generally 1.5 - 2.5 inches in diameter and applied in a …
Ballast Options and Flexibility. One of the advantages of using MM6125® in a Protected Membrane Roof Assembly (PMR) is that once the membrane is installed owners and designers can take advantage of various ballast options (gravel, pavers and Garden Roof®) to suit a specific project's needs.
In the About Roofing Building Aggregates range, there are a huge number of building aggregate types to choose from including and number of different sands, cements, concrete and mortar.. Choose from soft building sand, master grade cement, roof tile bedding mortar,coarse sharp sand, ballast and more!. Save Money on Building Aggregates.
Rounded Roofing Ballast/Pebbles 20-40mm are a great alternative to scottish beach pebbles and are available in 10,20 and 40 unit packs of easy to manage poly bags. The material is also available in bulk bags. Our rounded roofing pebbles are naturally rounded and smooth in apprearance. These flint pebbles are grey and brown in colour.
Aggregate Gradation and Sampling University of …Aggregate Gradation. CIVL 3137 38 ... Gradation Chart 0 20 40 60 80 100 Percent Passing Opening Size (mm) Total mass percent passing each sieve&gradation of aggregates
Aggregate New Enterprise Stone Lime Co., Inc. Whether you need basic construction aggregates for homes, schools, hospitals, churches and commercial buildings; roadway construction materials; or specialty products from high-specification sorbents to railway ballast to USGA Drainage Rice or horse track and riding ring materials, we have a wide range of aggregate products to meet your project needs.
D7655/D7655M - 12 Standard Classification for Size of Aggregate Used as Ballast for Membrane Roof Systems, aggregate, aggregate standard size, screenings, Aggregate size/distribution, Roofing membranes, Roofing/waterproofing materials,
c. Gradation. (1) Table 6-8 gives recommended AREMA ballast gradations. For main running tracks, sizes 4A and. 4 will be used. For loading tracks in terminal areas, size 5 may be used to facilitate easier walking along. the cars during loading and unloading operations, but a larger size is preferred for long-term track. maintenance.
6.1 Standard aggregate sizes shall conform to the require-ments prescribed in Table 1 for the size number specified. Conformance shall be determined by means of laboratory sieves having square openings and conforming to Specification E11. 7. Basis of Classification 7.1 Classification of an aggregate is based upon the size
aggregate ballast in gradation for roofing Nominal 1½ 40 mm Aggregate Clean smooth river bottom stone consisting of ballast gradation Size 4 or alternatively Size 3 as specified in ASTM D 448 "Standard Sizes of Coarse Aggregate" The ballast should consist of 4 ¾ to 1½ 20 mm to 40 mm or 3 2 to 1 Get Price SECTION 20110 BALLAST AND WALKWAY AGGREGATE
30-09-2011· D. Unacceptable ballast/walkway aggregate parent materials: Carbonates, sedimentary rock, alluvium, sandstone, limestone, and slag. E. Obtain ballast/walkway aggregate material from one quarry source throughout the duration of the Contract. 2.02 GRADATION REQUIREMENTS OF BALLAST 1.
Nominal 1½" (40 mm) Aggregate: Clean, smooth, river bottom stone consisting of ballast gradation Size #4 (or, alternatively, Size #3), as specified in ASTM D 448 "Standard Sizes of Coarse Aggregate". The ballast should consist of (#4) ¾" to 1½" (20 mm to 40 mm) or (#3) 2" to 1"