ASTM D5957 Standard Guide for Flood Testing Horizontal Waterproofing Installations | Los Angeles

Let's start by saying that the ASTM 5957 is a grade to test the integrity of waterproofing like in a deck for example. The test is suggested to be administered by a water intrusion specialist in Los Angeles like Building leak Detection Services in Los Angeles for example.

Building leak Detection Services in Los Angeles perform a multitude of water intrusion-related leak detection services.

The methods in this guide explain how to check if waterproofing solutions on flat deck surfaces with a slope of no more than (2%) (1/4 in./ft) and are secure.

For the ASTM 5957 Deck rain leak test, a qualified structural engineer should check the substrate's structural strength before installing the waterproofing system. This is to make sure that the loads that come with following the steps in this guide don't go over what the code and design allow and lead to moisture intrusion.

During the tests, curbs or walls used to keep the water in will be subjected to lateral loads that should be taken into account. It is important to think about the effects of any tools, plants, or other moveable items that are in the test area.

Its worth noting that at 22°C (71.6°F), potable water weighs about 1000 kg/cubic m (62.3 lb/cu ft), which is equal to 1 g/cm2/cm depth (5.19 lb/ft2 per in. depth) so its a good thing to keep in mind when filling the deck or flat surface.

This guide explains how to check if sealing systems are watertight in ponded water with a short-term hydrostatic head of no more than 100 mm (4 in.). In other words, the deck cannot be filled to more than 4" of water.

There is one exception, however, it is possible to raise the amount of water that forms a hydrostatic head above 100 mm (4 in.) of water, but only after a licensed structural engineer has looked over the potential effects on the ground and given their approval.

The extra loads put on the building during the test time will change how much structural parts bend. An authorized Los Angeles structural expert must look at the affects before adding more weight. The test time will include keeping an eye on important areas for moisture intrusion which may simulate a rain leak.

You shouldn't use this guide if it's going to be freezing during the test time. If water pools, it can freeze and stick to the waterproofing system. This can cause the flashings to pull or tear away from the base or break the corners inside. A water intrusion specialist can implement this testing procedure here in Los Angeles.

This guide's goal is to give you some faith that the waterproofing installation will stay waterproof for the system's service life, based on how well it worked when water pooled around it for a short time.

Additionally, this guide tells you how to test the waterproofing of flat areas with a slope of no more than (1/4 in. per ft) to see if they are completely waterproof.

The ASTM E5957 guide is for installing waterproofing on parking garages, public decks, and other structures that are above living areas or on higher ground. It is not for use on building rooftop systems. This guide can be used to test weatherproof membrane systems that are fully adhered or bonded sheet membranes, fluid-applied or liquid-applied membranes, or loose-laid sheet membranes.

The steps outlined here are not meant to be used on waterproofing installations that will be submerged or hold water for a long time, like swimming pools, fountains, tank liners with hydrostatic pressure, or water storage units (storage period greater than 48 hours). Of course, in this case failure can occur in the form of moisture intrusion into the building.

Non-Invasive Methods for Detecting Hidden Leaks

Conventional rain leak detection techniques can occasionally cause invasive and potential harm to your property. Fortunately, advancements in technology have led to the development of non-invasive methods for detecting hidden leaks. One such method is infrared thermography, a technique that utilizes thermal imaging cameras to identify areas of moisture or leaks.

Other non-invasive methods include electronic leak detection, ultrasound, and endoscopy, which are effective in identifying concealed water and moisture intrusion issues. These testing systems can achieve an accuracy rate of over 90%, often close to 100% precision, showcasing their effectiveness in identifying leak issues.

Evaluating Structural Integrity | Deck Moisture intrusion Damage

The role of a licensed structural engineer in conducting inspections is essential to evaluate elements such as load-bearing walls, floors, and ceilings for indications of structural damage or weakness. This expert analysis ensures the structural capacity of the deck is sufficient to handle the loads associated with testing procedures, mitigating potential safety risks.

The evaluation of the capacity of a substrate for waterproofing takes into account factors such as substrate stability, construction sequence, risk versus cost, ease of application, and the material’s ability to bond tightly to the substrate.

Failure to adequately evaluate a deck’s structural integrity before waterproofing may lead to issues such as water damage, wood rot, splintered wood, broken and wobbly boards, warping, cracking, inadequate flashing, structural instability, and compromised integrity of trim, siding, and posts.