Home>ASTM Standards>ASTM D6451-99(R2021) pdf free download

ASTM D6451-99(R2021) pdf free download

ASTM D6451-99(R2021) pdf free download.Standard Guide for Application of Asphalt-Based Protection Board
1. Scope
1.1 This guide lists minimum application and installation requirements for semi-rigid protection board when used as protection for below-grade or below wearing surface (like plaza decks) waterproofing. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 8. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
11. Installation
11.1 Install protection board within 24 h of completing the waterproofing membrane installation. Delay installation of the protection board until the waterproofing film cures. If flood testing is conducted, the application should be as soon as possible after the surface is dry and clean. 11.2 On Low-Slope Surfaces: 11.2.1 Lay protection board on the membrane in common bond brick pattern (so that the joints are aligned in one direction and broken halfway over in the other direction) with the edges butted tightly together. The maximum allowable gap between boards is 3 mm [ 1 ⁄ 8 in.]. No area of the membrane shall be left uncovered. Lay the board with the weather coating and bond breaking film away from the membrane. 11.2.2 At areas with protrusions and drains, place the board in the desired position to measure the area to be cut out. In drain areas mark an area large enough to cover the membrane and the sealed termination. Mark boards as close to the protrusion as possible while still keeping the board flat. Remove the marked board before cutting (so as not to cut the waterproofing membrane) using a sharp utility knife. Check the cutout by replacing the board in the original location, making sure it will butt all sheets and adequately protect the desired areas before applying adhesive (ifbeing used) for final placing. Avoid damaging the waterproofing membrane or any flashings during application. Boards must lie flat; if necessary, score the bottom of the board to obtain conformance to surface. 11.2.3 Cut and fit boards at inside or outside angles. For gentle or “slow” bends, scoring and folding is acceptable. Use adhesive to hold the protection board in position. 11.2.4 During windy conditions, weigh the individual boards down, even if adhesive is used. 11.3 On Vertical and Steeply Sloped Surfaces:11.3.1 The protection board is to be applied with the long axis of the board going up the slope. The joints in the cross-the-slope direction shall be aligned while the up-slope joints shall be in a stacked brick pattern, with joints centered over previously applied boards. 11.3.2 Using adhesive as described in 7.2, coat the outside 100 mm [4 in.] of the board as well as diagonally from each corner to make an “X” across the center of the surface of each protection board to be installed against the waterproofing membrane. Full adhesive coating of the board is also accept- able when approved by the manufacturers or suppliers of the membrane components. 11.3.3 Immediately place the protection board into position and roll to secure into position. Follow the same procedure with all other boards. Apply in common bond brick course pattern, as described in 11.2.1. Butt the boards against each other to completely protect the waterproofing surface. As with low-slope installations, the maximum gap between boards shall be 3 mm [ 1 ⁄ 8 in.]. 11.3.4 At penetrations, place the board in the desired position to locate the areas to be cut. Remove the board to avoid damaging the waterproofing membrane and cut out marked areas with a sharp utility knife. Replace the board carefully in its original location.

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